diff options
Diffstat (limited to 'src/target')
| -rw-r--r-- | src/target/arm_adi_v5.c.orig | 1981 | ||||
| -rw-r--r-- | src/target/arm_adi_v5.c~ | 1981 |
2 files changed, 0 insertions, 3962 deletions
diff --git a/src/target/arm_adi_v5.c.orig b/src/target/arm_adi_v5.c.orig deleted file mode 100644 index 708e8581..00000000 --- a/src/target/arm_adi_v5.c.orig +++ /dev/null @@ -1,1981 +0,0 @@ -/*************************************************************************** - * Copyright (C) 2006 by Magnus Lundin * - * lundin@mlu.mine.nu * - * * - * Copyright (C) 2008 by Spencer Oliver * - * spen@spen-soft.co.uk * - * * - * Copyright (C) 2009 by Oyvind Harboe * - * oyvind.harboe@zylin.com * - * * - * Copyright (C) 2009-2010 by David Brownell * - * * - * This program is free software; you can redistribute it and/or modify * - * it under the terms of the GNU General Public License as published by * - * the Free Software Foundation; either version 2 of the License, or * - * (at your option) any later version. * - * * - * This program is distributed in the hope that it will be useful, * - * but WITHOUT ANY WARRANTY; without even the implied warranty of * - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * - * GNU General Public License for more details. * - * * - * You should have received a copy of the GNU General Public License * - * along with this program; if not, write to the * - * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - ***************************************************************************/ - -/** - * @file - * This file implements support for the ARM Debug Interface version 5 (ADIv5) - * debugging architecture. Compared with previous versions, this includes - * a low pin-count Serial Wire Debug (SWD) alternative to JTAG for message - * transport, and focusses on memory mapped resources as defined by the - * CoreSight architecture. - * - * A key concept in ADIv5 is the Debug Access Port, or DAP. A DAP has two - * basic components: a Debug Port (DP) transporting messages to and from a - * debugger, and an Access Port (AP) accessing resources. Three types of DP - * are defined. One uses only JTAG for communication, and is called JTAG-DP. - * One uses only SWD for communication, and is called SW-DP. The third can - * use either SWD or JTAG, and is called SWJ-DP. The most common type of AP - * is used to access memory mapped resources and is called a MEM-AP. Also a - * JTAG-AP is also defined, bridging to JTAG resources; those are uncommon. - * - * This programming interface allows DAP pipelined operations through a - * transaction queue. This primarily affects AP operations (such as using - * a MEM-AP to access memory or registers). If the current transaction has - * not finished by the time the next one must begin, and the ORUNDETECT bit - * is set in the DP_CTRL_STAT register, the SSTICKYORUN status is set and - * further AP operations will fail. There are two basic methods to avoid - * such overrun errors. One involves polling for status instead of using - * transaction piplining. The other involves adding delays to ensure the - * AP has enough time to complete one operation before starting the next - * one. (For JTAG these delays are controlled by memaccess_tck.) - */ - -/* - * Relevant specifications from ARM include: - * - * ARM(tm) Debug Interface v5 Architecture Specification ARM IHI 0031A - * CoreSight(tm) v1.0 Architecture Specification ARM IHI 0029B - * - * CoreSight(tm) DAP-Lite TRM, ARM DDI 0316D - * Cortex-M3(tm) TRM, ARM DDI 0337G - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "arm.h" -#include "arm_adi_v5.h" -#include <helper/time_support.h> - - -/* ARM ADI Specification requires at least 10 bits used for TAR autoincrement */ - -/* - uint32_t tar_block_size(uint32_t address) - Return the largest block starting at address that does not cross a tar block size alignment boundary -*/ -static uint32_t max_tar_block_size(uint32_t tar_autoincr_block, uint32_t address) -{ - return (tar_autoincr_block - ((tar_autoincr_block - 1) & address)) >> 2; -} - -/*************************************************************************** - * * -<<<<<<< HEAD:src/target/arm_adi_v5.c -======= - * DPACC and APACC scanchain access through JTAG-DP * - * * -***************************************************************************/ - -/** - * Scan DPACC or APACC using target ordered uint8_t buffers. No endianness - * conversions are performed. See section 4.4.3 of the ADIv5 spec, which - * discusses operations which access these registers. - * - * Note that only one scan is performed. If RnW is set, a separate scan - * will be needed to collect the data which was read; the "invalue" collects - * the posted result of a preceding operation, not the current one. - * - * @param swjdp the DAP - * @param instr JTAG_DP_APACC (AP access) or JTAG_DP_DPACC (DP access) - * @param reg_addr two significant bits; A[3:2]; for APACC access, the - * SELECT register has more addressing bits. - * @param RnW false iff outvalue will be written to the DP or AP - * @param outvalue points to a 32-bit (little-endian) integer - * @param invalue NULL, or points to a 32-bit (little-endian) integer - * @param ack points to where the three bit JTAG_ACK_* code will be stored - */ -static int adi_jtag_dp_scan(struct adiv5_dap *swjdp, - uint8_t instr, uint8_t reg_addr, uint8_t RnW, - uint8_t *outvalue, uint8_t *invalue, uint8_t *ack) -{ - struct arm_jtag *jtag_info = swjdp->jtag_info; - struct scan_field fields[2]; - uint8_t out_addr_buf; - - jtag_set_end_state(TAP_IDLE); - arm_jtag_set_instr(jtag_info, instr, NULL); - - /* Scan out a read or write operation using some DP or AP register. - * For APACC access with any sticky error flag set, this is discarded. - */ - fields[0].num_bits = 3; - buf_set_u32(&out_addr_buf, 0, 3, ((reg_addr >> 1) & 0x6) | (RnW & 0x1)); - fields[0].out_value = &out_addr_buf; - fields[0].in_value = ack; - - /* NOTE: if we receive JTAG_ACK_WAIT, the previous operation did not - * complete; data we write is discarded, data we read is unpredictable. - * When overrun detect is active, STICKYORUN is set. - */ - - fields[1].num_bits = 32; - fields[1].out_value = outvalue; - fields[1].in_value = invalue; - - jtag_add_dr_scan(jtag_info->tap, 2, fields, TAP_IDLE); - - /* Add specified number of tck clocks after starting memory bus - * access, giving the hardware time to complete the access. - * They provide more time for the (MEM) AP to complete the read ... - * See "Minimum Response Time" for JTAG-DP, in the ADIv5 spec. - */ - if ((instr == JTAG_DP_APACC) - && ((reg_addr == AP_REG_DRW) - || ((reg_addr & 0xF0) == AP_REG_BD0)) - && (swjdp->memaccess_tck != 0)) - jtag_add_runtest(swjdp->memaccess_tck, - TAP_IDLE); - - return jtag_get_error(); -} - -/** - * Scan DPACC or APACC out and in from host ordered uint32_t buffers. - * This is exactly like adi_jtag_dp_scan(), except that endianness - * conversions are performed (so the types of invalue and outvalue - * must be different). - */ -static int adi_jtag_dp_scan_u32(struct adiv5_dap *swjdp, - uint8_t instr, uint8_t reg_addr, uint8_t RnW, - uint32_t outvalue, uint32_t *invalue, uint8_t *ack) -{ - uint8_t out_value_buf[4]; - int retval; - - buf_set_u32(out_value_buf, 0, 32, outvalue); - - retval = adi_jtag_dp_scan(swjdp, instr, reg_addr, RnW, - out_value_buf, (uint8_t *)invalue, ack); - if (retval != ERROR_OK) - return retval; - - if (invalue) - jtag_add_callback(arm_le_to_h_u32, - (jtag_callback_data_t) invalue); - - return retval; -} - -/** - * Utility to write AP registers. - */ -static inline int adi_jtag_ap_write_check(struct adiv5_dap *dap, - uint8_t reg_addr, uint8_t *outvalue) -{ - return adi_jtag_dp_scan(dap, JTAG_DP_APACC, reg_addr, DPAP_WRITE, - outvalue, NULL, NULL); -} - -static int adi_jtag_scan_inout_check_u32(struct adiv5_dap *swjdp, - uint8_t instr, uint8_t reg_addr, uint8_t RnW, - uint32_t outvalue, uint32_t *invalue) -{ - int retval; - - /* Issue the read or write */ - retval = adi_jtag_dp_scan_u32(swjdp, instr, reg_addr, - RnW, outvalue, NULL, NULL); - if (retval != ERROR_OK) - return retval; - - /* For reads, collect posted value; RDBUFF has no other effect. - * Assumes read gets acked with OK/FAULT, and CTRL_STAT says "OK". - */ - if ((RnW == DPAP_READ) && (invalue != NULL)) - retval = adi_jtag_dp_scan_u32(swjdp, JTAG_DP_DPACC, - DP_RDBUFF, DPAP_READ, 0, invalue, &swjdp->ack); - return retval; -} - -static int jtagdp_transaction_endcheck(struct adiv5_dap *swjdp) -{ - int retval; - uint32_t ctrlstat; - - /* too expensive to call keep_alive() here */ - -#if 0 - /* Danger!!!! BROKEN!!!! */ - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); - /* Danger!!!! BROKEN!!!! Why will jtag_execute_queue() fail here???? - R956 introduced the check on return value here and now Michael Schwingen reports - that this code no longer works.... - - https://lists.berlios.de/pipermail/openocd-development/2008-September/003107.html - */ - if ((retval = jtag_execute_queue()) != ERROR_OK) - { - LOG_ERROR("BUG: Why does this fail the first time????"); - } - /* Why??? second time it works??? */ -#endif - - /* Post CTRL/STAT read; discard any previous posted read value - * but collect its ACK status. - */ - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); - if ((retval = jtag_execute_queue()) != ERROR_OK) - return retval; - - swjdp->ack = swjdp->ack & 0x7; - - /* common code path avoids calling timeval_ms() */ - if (swjdp->ack != JTAG_ACK_OK_FAULT) - { - long long then = timeval_ms(); - - while (swjdp->ack != JTAG_ACK_OK_FAULT) - { - if (swjdp->ack == JTAG_ACK_WAIT) - { - if ((timeval_ms()-then) > 1000) - { - /* NOTE: this would be a good spot - * to use JTAG_DP_ABORT. - */ - LOG_WARNING("Timeout (1000ms) waiting " - "for ACK=OK/FAULT " - "in JTAG-DP transaction"); - return ERROR_JTAG_DEVICE_ERROR; - } - } - else - { - LOG_WARNING("Invalid ACK %#x " - "in JTAG-DP transaction", - swjdp->ack); - return ERROR_JTAG_DEVICE_ERROR; - } - - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - swjdp->ack = swjdp->ack & 0x7; - } - } - - /* REVISIT also STICKYCMP, for pushed comparisons (nyet used) */ - - /* Check for STICKYERR and STICKYORUN */ - if (ctrlstat & (SSTICKYORUN | SSTICKYERR)) - { - LOG_DEBUG("jtag-dp: CTRL/STAT error, 0x%" PRIx32, ctrlstat); - /* Check power to debug regions */ - if ((ctrlstat & 0xf0000000) != 0xf0000000) - ahbap_debugport_init(swjdp); - else - { - uint32_t mem_ap_csw, mem_ap_tar; - - /* Maybe print information about last intended - * MEM-AP access; but not if autoincrementing. - * *Real* CSW and TAR values are always shown. - */ - if (swjdp->ap_tar_value != (uint32_t) -1) - LOG_DEBUG("MEM-AP Cached values: " - "ap_bank 0x%" PRIx32 - ", ap_csw 0x%" PRIx32 - ", ap_tar 0x%" PRIx32, - swjdp->ap_bank_value, - swjdp->ap_csw_value, - swjdp->ap_tar_value); - - if (ctrlstat & SSTICKYORUN) - LOG_ERROR("JTAG-DP OVERRUN - check clock, " - "memaccess, or reduce jtag speed"); - - if (ctrlstat & SSTICKYERR) - LOG_ERROR("JTAG-DP STICKY ERROR"); - - /* Clear Sticky Error Bits */ - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_WRITE, - swjdp->dp_ctrl_stat | SSTICKYORUN - | SSTICKYERR, NULL); - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - - LOG_DEBUG("jtag-dp: CTRL/STAT 0x%" PRIx32, ctrlstat); - - retval = dap_queue_ap_read(swjdp, - AP_REG_CSW, &mem_ap_csw); - if (retval != ERROR_OK) - return retval; - - retval = dap_queue_ap_read(swjdp, - AP_REG_TAR, &mem_ap_tar); - if (retval != ERROR_OK) - return retval; - - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - LOG_ERROR("MEM_AP_CSW 0x%" PRIx32 ", MEM_AP_TAR 0x%" - PRIx32, mem_ap_csw, mem_ap_tar); - - } - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - return ERROR_JTAG_DEVICE_ERROR; - } - - return ERROR_OK; -} - -/*************************************************************************** - * * ->>>>>>> jtag: cut down on usage of unintended modification of global end state:src/target/arm_adi_v5.c - * DP and MEM-AP register access through APACC and DPACC * - * * -***************************************************************************/ - -/** - * Select one of the APs connected to the specified DAP. The - * selection is implicitly used with future AP transactions. - * This is a NOP if the specified AP is already selected. - * - * @param swjdp The DAP - * @param apsel Number of the AP to (implicitly) use with further - * transactions. This normally identifies a MEM-AP. - */ -void dap_ap_select(struct adiv5_dap *swjdp,uint8_t apsel) -{ - uint32_t select = (apsel << 24) & 0xFF000000; - - if (select != swjdp->apsel) - { - swjdp->apsel = select; - /* Switching AP invalidates cached values. - * Values MUST BE UPDATED BEFORE AP ACCESS. - */ - swjdp->ap_bank_value = -1; - swjdp->ap_csw_value = -1; - swjdp->ap_tar_value = -1; - } -} - -/** - * Queue transactions setting up transfer parameters for the - * currently selected MEM-AP. - * - * Subsequent transfers using registers like AP_REG_DRW or AP_REG_BD2 - * initiate data reads or writes using memory or peripheral addresses. - * If the CSW is configured for it, the TAR may be automatically - * incremented after each transfer. - * - * @todo Rename to reflect it being specifically a MEM-AP function. - * - * @param swjdp The DAP connected to the MEM-AP. - * @param csw MEM-AP Control/Status Word (CSW) register to assign. If this - * matches the cached value, the register is not changed. - * @param tar MEM-AP Transfer Address Register (TAR) to assign. If this - * matches the cached address, the register is not changed. - * - * @return ERROR_OK if the transaction was properly queued, else a fault code. - */ -int dap_setup_accessport(struct adiv5_dap *swjdp, uint32_t csw, uint32_t tar) -{ - int retval; - - csw = csw | CSW_DBGSWENABLE | CSW_MASTER_DEBUG | CSW_HPROT; - if (csw != swjdp->ap_csw_value) - { - /* LOG_DEBUG("DAP: Set CSW %x",csw); */ - retval = dap_queue_ap_write(swjdp, AP_REG_CSW, csw); - if (retval != ERROR_OK) - return retval; - swjdp->ap_csw_value = csw; - } - if (tar != swjdp->ap_tar_value) - { - /* LOG_DEBUG("DAP: Set TAR %x",tar); */ - retval = dap_queue_ap_write(swjdp, AP_REG_TAR, tar); - if (retval != ERROR_OK) - return retval; - swjdp->ap_tar_value = tar; - } - /* Disable TAR cache when autoincrementing */ - if (csw & CSW_ADDRINC_MASK) - swjdp->ap_tar_value = -1; - return ERROR_OK; -} - -/** - * Asynchronous (queued) read of a word from memory or a system register. - * - * @param swjdp The DAP connected to the MEM-AP performing the read. - * @param address Address of the 32-bit word to read; it must be - * readable by the currently selected MEM-AP. - * @param value points to where the word will be stored when the - * transaction queue is flushed (assuming no errors). - * - * @return ERROR_OK for success. Otherwise a fault code. - */ -int mem_ap_read_u32(struct adiv5_dap *swjdp, uint32_t address, - uint32_t *value) -{ - int retval; - - /* Use banked addressing (REG_BDx) to avoid some link traffic - * (updating TAR) when reading several consecutive addresses. - */ - retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, - address & 0xFFFFFFF0); - if (retval != ERROR_OK) - return retval; - - return dap_queue_ap_read(swjdp, AP_REG_BD0 | (address & 0xC), value); -} - -/** - * Synchronous read of a word from memory or a system register. - * As a side effect, this flushes any queued transactions. - * - * @param swjdp The DAP connected to the MEM-AP performing the read. - * @param address Address of the 32-bit word to read; it must be - * readable by the currently selected MEM-AP. - * @param value points to where the result will be stored. - * - * @return ERROR_OK for success; *value holds the result. - * Otherwise a fault code. - */ -int mem_ap_read_atomic_u32(struct adiv5_dap *swjdp, uint32_t address, - uint32_t *value) -{ - int retval; - - retval = mem_ap_read_u32(swjdp, address, value); - if (retval != ERROR_OK) - return retval; - - return dap_run(swjdp); -} - -/** - * Asynchronous (queued) write of a word to memory or a system register. - * - * @param swjdp The DAP connected to the MEM-AP. - * @param address Address to be written; it must be writable by - * the currently selected MEM-AP. - * @param value Word that will be written to the address when transaction - * queue is flushed (assuming no errors). - * - * @return ERROR_OK for success. Otherwise a fault code. - */ -int mem_ap_write_u32(struct adiv5_dap *swjdp, uint32_t address, - uint32_t value) -{ - int retval; - - /* Use banked addressing (REG_BDx) to avoid some link traffic - * (updating TAR) when writing several consecutive addresses. - */ - retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, - address & 0xFFFFFFF0); - if (retval != ERROR_OK) - return retval; - - return dap_queue_ap_write(swjdp, AP_REG_BD0 | (address & 0xC), - value); -} - -/** - * Synchronous write of a word to memory or a system register. - * As a side effect, this flushes any queued transactions. - * - * @param swjdp The DAP connected to the MEM-AP. - * @param address Address to be written; it must be writable by - * the currently selected MEM-AP. - * @param value Word that will be written. - * - * @return ERROR_OK for success; the data was written. Otherwise a fault code. - */ -int mem_ap_write_atomic_u32(struct adiv5_dap *swjdp, uint32_t address, - uint32_t value) -{ - int retval = mem_ap_write_u32(swjdp, address, value); - - if (retval != ERROR_OK) - return retval; - - return dap_run(swjdp); -} - -/***************************************************************************** -* * -* mem_ap_write_buf(struct adiv5_dap *swjdp, uint8_t *buffer, int count, uint32_t address) * -* * -* Write a buffer in target order (little endian) * -* * -*****************************************************************************/ -int mem_ap_write_buf_u32(struct adiv5_dap *swjdp, uint8_t *buffer, int count, uint32_t address) -{ - int wcount, blocksize, writecount, errorcount = 0, retval = ERROR_OK; - uint32_t adr = address; - uint8_t* pBuffer = buffer; - - count >>= 2; - wcount = count; - - /* if we have an unaligned access - reorder data */ - if (adr & 0x3u) - { - for (writecount = 0; writecount < count; writecount++) - { - int i; - uint32_t outvalue; - memcpy(&outvalue, pBuffer, sizeof(uint32_t)); - - for (i = 0; i < 4; i++) - { - *((uint8_t*)pBuffer + (adr & 0x3)) = outvalue; - outvalue >>= 8; - adr++; - } - pBuffer += sizeof(uint32_t); - } - } - - while (wcount > 0) - { - /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - if (wcount < blocksize) - blocksize = wcount; - - /* handle unaligned data at 4k boundary */ - if (blocksize == 0) - blocksize = 1; - - dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address); - - for (writecount = 0; writecount < blocksize; writecount++) - { - retval = dap_queue_ap_write(swjdp, AP_REG_DRW, - *(uint32_t *) (buffer + 4 * writecount)); - if (retval != ERROR_OK) - break; - } - - if (dap_run(swjdp) == ERROR_OK) - { - wcount = wcount - blocksize; - address = address + 4 * blocksize; - buffer = buffer + 4 * blocksize; - } - else - { - errorcount++; - } - - if (errorcount > 1) - { - LOG_WARNING("Block write error address 0x%" PRIx32 ", wcount 0x%x", address, wcount); - /* REVISIT return the *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - } - - return retval; -} - -static int mem_ap_write_buf_packed_u16(struct adiv5_dap *swjdp, - uint8_t *buffer, int count, uint32_t address) -{ - int retval = ERROR_OK; - int wcount, blocksize, writecount, i; - - wcount = count >> 1; - - while (wcount > 0) - { - int nbytes; - - /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - - if (wcount < blocksize) - blocksize = wcount; - - /* handle unaligned data at 4k boundary */ - if (blocksize == 0) - blocksize = 1; - - dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address); - writecount = blocksize; - - do - { - nbytes = MIN((writecount << 1), 4); - - if (nbytes < 4) - { - if (mem_ap_write_buf_u16(swjdp, buffer, - nbytes, address) != ERROR_OK) - { - LOG_WARNING("Block write error address " - "0x%" PRIx32 ", count 0x%x", - address, count); - return ERROR_JTAG_DEVICE_ERROR; - } - - address += nbytes >> 1; - } - else - { - uint32_t outvalue; - memcpy(&outvalue, buffer, sizeof(uint32_t)); - - for (i = 0; i < nbytes; i++) - { - *((uint8_t*)buffer + (address & 0x3)) = outvalue; - outvalue >>= 8; - address++; - } - - memcpy(&outvalue, buffer, sizeof(uint32_t)); - retval = dap_queue_ap_write(swjdp, - AP_REG_DRW, outvalue); - if (retval != ERROR_OK) - break; - - if (dap_run(swjdp) != ERROR_OK) - { - LOG_WARNING("Block write error address " - "0x%" PRIx32 ", count 0x%x", - address, count); - /* REVISIT return *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - } - - buffer += nbytes >> 1; - writecount -= nbytes >> 1; - - } while (writecount); - wcount -= blocksize; - } - - return retval; -} - -int mem_ap_write_buf_u16(struct adiv5_dap *swjdp, uint8_t *buffer, int count, uint32_t address) -{ - int retval = ERROR_OK; - - if (count >= 4) - return mem_ap_write_buf_packed_u16(swjdp, buffer, count, address); - - while (count > 0) - { - dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_SINGLE, address); - uint16_t svalue; - memcpy(&svalue, buffer, sizeof(uint16_t)); - uint32_t outvalue = (uint32_t)svalue << 8 * (address & 0x3); - retval = dap_queue_ap_write(swjdp, AP_REG_DRW, outvalue); - if (retval != ERROR_OK) - break; - - retval = dap_run(swjdp); - if (retval != ERROR_OK) - break; - - count -= 2; - address += 2; - buffer += 2; - } - - return retval; -} - -static int mem_ap_write_buf_packed_u8(struct adiv5_dap *swjdp, - uint8_t *buffer, int count, uint32_t address) -{ - int retval = ERROR_OK; - int wcount, blocksize, writecount, i; - - wcount = count; - - while (wcount > 0) - { - int nbytes; - - /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - - if (wcount < blocksize) - blocksize = wcount; - - dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address); - writecount = blocksize; - - do - { - nbytes = MIN(writecount, 4); - - if (nbytes < 4) - { - if (mem_ap_write_buf_u8(swjdp, buffer, nbytes, address) != ERROR_OK) - { - LOG_WARNING("Block write error address " - "0x%" PRIx32 ", count 0x%x", - address, count); - return ERROR_JTAG_DEVICE_ERROR; - } - - address += nbytes; - } - else - { - uint32_t outvalue; - memcpy(&outvalue, buffer, sizeof(uint32_t)); - - for (i = 0; i < nbytes; i++) - { - *((uint8_t*)buffer + (address & 0x3)) = outvalue; - outvalue >>= 8; - address++; - } - - memcpy(&outvalue, buffer, sizeof(uint32_t)); - retval = dap_queue_ap_write(swjdp, - AP_REG_DRW, outvalue); - if (retval != ERROR_OK) - break; - - if (dap_run(swjdp) != ERROR_OK) - { - LOG_WARNING("Block write error address " - "0x%" PRIx32 ", count 0x%x", - address, count); - /* REVISIT return *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - } - - buffer += nbytes; - writecount -= nbytes; - - } while (writecount); - wcount -= blocksize; - } - - return retval; -} - -int mem_ap_write_buf_u8(struct adiv5_dap *swjdp, uint8_t *buffer, int count, uint32_t address) -{ - int retval = ERROR_OK; - - if (count >= 4) - return mem_ap_write_buf_packed_u8(swjdp, buffer, count, address); - - while (count > 0) - { - dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address); - uint32_t outvalue = (uint32_t)*buffer << 8 * (address & 0x3); - retval = dap_queue_ap_write(swjdp, AP_REG_DRW, outvalue); - if (retval != ERROR_OK) - break; - - retval = dap_run(swjdp); - if (retval != ERROR_OK) - break; - - count--; - address++; - buffer++; - } - - return retval; -} - -/* FIXME don't import ... this is a temporary workaround for the - * mem_ap_read_buf_u32() mess, until it's no longer JTAG-specific. - */ -extern int adi_jtag_dp_scan(struct adiv5_dap *swjdp, - uint8_t instr, uint8_t reg_addr, uint8_t RnW, - uint8_t *outvalue, uint8_t *invalue, uint8_t *ack); - -/** - * Synchronously read a block of 32-bit words into a buffer - * @param swjdp The DAP connected to the MEM-AP. - * @param buffer where the words will be stored (in host byte order). - * @param count How many words to read. - * @param address Memory address from which to read words; all the - * words must be readable by the currently selected MEM-AP. - */ -int mem_ap_read_buf_u32(struct adiv5_dap *swjdp, uint8_t *buffer, - int count, uint32_t address) -{ - int wcount, blocksize, readcount, errorcount = 0, retval = ERROR_OK; - uint32_t adr = address; - uint8_t* pBuffer = buffer; - - count >>= 2; - wcount = count; - - while (wcount > 0) - { - /* Adjust to read blocks within boundaries aligned to the - * TAR autoincrement size (at least 2^10). Autoincrement - * mode avoids an extra per-word roundtrip to update TAR. - */ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, - address); - if (wcount < blocksize) - blocksize = wcount; - - /* handle unaligned data at 4k boundary */ - if (blocksize == 0) - blocksize = 1; - - dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, - address); - - /* FIXME remove these three calls to adi_jtag_dp_scan(), - * so this routine becomes transport-neutral. Be careful - * not to cause performance problems with JTAG; would it - * suffice to loop over dap_queue_ap_read(), or would that - * be slower when JTAG is the chosen transport? - */ - - /* Scan out first read */ - adi_jtag_dp_scan(swjdp, JTAG_DP_APACC, AP_REG_DRW, - DPAP_READ, 0, NULL, NULL); - for (readcount = 0; readcount < blocksize - 1; readcount++) - { - /* Scan out next read; scan in posted value for the - * previous one. Assumes read is acked "OK/FAULT", - * and CTRL_STAT says that meant "OK". - */ - adi_jtag_dp_scan(swjdp, JTAG_DP_APACC, AP_REG_DRW, - DPAP_READ, 0, buffer + 4 * readcount, - &swjdp->ack); - } - - /* Scan in last posted value; RDBUFF has no other effect, - * assuming ack is OK/FAULT and CTRL_STAT says "OK". - */ - adi_jtag_dp_scan(swjdp, JTAG_DP_DPACC, DP_RDBUFF, - DPAP_READ, 0, buffer + 4 * readcount, - &swjdp->ack); - if (dap_run(swjdp) == ERROR_OK) - { - wcount = wcount - blocksize; - address += 4 * blocksize; - buffer += 4 * blocksize; - } - else - { - errorcount++; - } - - if (errorcount > 1) - { - LOG_WARNING("Block read error address 0x%" PRIx32 - ", count 0x%x", address, count); - /* REVISIT return the *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - } - - /* if we have an unaligned access - reorder data */ - if (adr & 0x3u) - { - for (readcount = 0; readcount < count; readcount++) - { - int i; - uint32_t data; - memcpy(&data, pBuffer, sizeof(uint32_t)); - - for (i = 0; i < 4; i++) - { - *((uint8_t*)pBuffer) = - (data >> 8 * (adr & 0x3)); - pBuffer++; - adr++; - } - } - } - - return retval; -} - -static int mem_ap_read_buf_packed_u16(struct adiv5_dap *swjdp, - uint8_t *buffer, int count, uint32_t address) -{ - uint32_t invalue; - int retval = ERROR_OK; - int wcount, blocksize, readcount, i; - - wcount = count >> 1; - - while (wcount > 0) - { - int nbytes; - - /* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - if (wcount < blocksize) - blocksize = wcount; - - dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address); - - /* handle unaligned data at 4k boundary */ - if (blocksize == 0) - blocksize = 1; - readcount = blocksize; - - do - { - retval = dap_queue_ap_read(swjdp, AP_REG_DRW, &invalue); - if (dap_run(swjdp) != ERROR_OK) - { - LOG_WARNING("Block read error address 0x%" PRIx32 ", count 0x%x", address, count); - /* REVISIT return the *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - - nbytes = MIN((readcount << 1), 4); - - for (i = 0; i < nbytes; i++) - { - *((uint8_t*)buffer) = (invalue >> 8 * (address & 0x3)); - buffer++; - address++; - } - - readcount -= (nbytes >> 1); - } while (readcount); - wcount -= blocksize; - } - - return retval; -} - -/** - * Synchronously read a block of 16-bit halfwords into a buffer - * @param swjdp The DAP connected to the MEM-AP. - * @param buffer where the halfwords will be stored (in host byte order). - * @param count How many halfwords to read. - * @param address Memory address from which to read words; all the - * words must be readable by the currently selected MEM-AP. - */ -int mem_ap_read_buf_u16(struct adiv5_dap *swjdp, uint8_t *buffer, - int count, uint32_t address) -{ - uint32_t invalue, i; - int retval = ERROR_OK; - - if (count >= 4) - return mem_ap_read_buf_packed_u16(swjdp, buffer, count, address); - - while (count > 0) - { - dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_SINGLE, address); - retval = dap_queue_ap_read(swjdp, AP_REG_DRW, &invalue); - if (retval != ERROR_OK) - break; - - retval = dap_run(swjdp); - if (retval != ERROR_OK) - break; - - if (address & 0x1) - { - for (i = 0; i < 2; i++) - { - *((uint8_t*)buffer) = (invalue >> 8 * (address & 0x3)); - buffer++; - address++; - } - } - else - { - uint16_t svalue = (invalue >> 8 * (address & 0x3)); - memcpy(buffer, &svalue, sizeof(uint16_t)); - address += 2; - buffer += 2; - } - count -= 2; - } - - return retval; -} - -/* FIX!!! is this a potential performance bottleneck w.r.t. requiring too many - * roundtrips when jtag_execute_queue() has a large overhead(e.g. for USB)s? - * - * The solution is to arrange for a large out/in scan in this loop and - * and convert data afterwards. - */ -static int mem_ap_read_buf_packed_u8(struct adiv5_dap *swjdp, - uint8_t *buffer, int count, uint32_t address) -{ - uint32_t invalue; - int retval = ERROR_OK; - int wcount, blocksize, readcount, i; - - wcount = count; - - while (wcount > 0) - { - int nbytes; - - /* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - - if (wcount < blocksize) - blocksize = wcount; - - dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address); - readcount = blocksize; - - do - { - retval = dap_queue_ap_read(swjdp, AP_REG_DRW, &invalue); - if (dap_run(swjdp) != ERROR_OK) - { - LOG_WARNING("Block read error address 0x%" PRIx32 ", count 0x%x", address, count); - /* REVISIT return the *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - - nbytes = MIN(readcount, 4); - - for (i = 0; i < nbytes; i++) - { - *((uint8_t*)buffer) = (invalue >> 8 * (address & 0x3)); - buffer++; - address++; - } - - readcount -= nbytes; - } while (readcount); - wcount -= blocksize; - } - - return retval; -} - -/** - * Synchronously read a block of bytes into a buffer - * @param swjdp The DAP connected to the MEM-AP. - * @param buffer where the bytes will be stored. - * @param count How many bytes to read. - * @param address Memory address from which to read data; all the - * data must be readable by the currently selected MEM-AP. - */ -int mem_ap_read_buf_u8(struct adiv5_dap *swjdp, uint8_t *buffer, - int count, uint32_t address) -{ - uint32_t invalue; - int retval = ERROR_OK; - - if (count >= 4) - return mem_ap_read_buf_packed_u8(swjdp, buffer, count, address); - - while (count > 0) - { - dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address); - retval = dap_queue_ap_read(swjdp, AP_REG_DRW, &invalue); - retval = dap_run(swjdp); - if (retval != ERROR_OK) - break; - - *((uint8_t*)buffer) = (invalue >> 8 * (address & 0x3)); - count--; - address++; - buffer++; - } - - return retval; -} - -/*--------------------------------------------------------------------------*/ - -<<<<<<< HEAD:src/target/arm_adi_v5.c -======= -static int jtag_idcode_q_read(struct adiv5_dap *dap, - uint8_t *ack, uint32_t *data) -{ - struct arm_jtag *jtag_info = dap->jtag_info; - int retval; - struct scan_field fields[1]; - - jtag_set_end_state(TAP_IDLE); - - /* This is a standard JTAG operation -- no DAP tweakage */ - retval = arm_jtag_set_instr(jtag_info, JTAG_DP_IDCODE, NULL); - if (retval != ERROR_OK) - return retval; - - fields[0].num_bits = 32; - fields[0].out_value = NULL; - fields[0].in_value = (void *) data; - - jtag_add_dr_scan(jtag_info->tap, 1, fields, TAP_IDLE); - retval = jtag_get_error(); - if (retval != ERROR_OK) - return retval; - - jtag_add_callback(arm_le_to_h_u32, - (jtag_callback_data_t) data); - - return retval; -} - -static int jtag_dp_q_read(struct adiv5_dap *dap, unsigned reg, - uint32_t *data) -{ - return adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC, - reg, DPAP_READ, 0, data); -} - -static int jtag_dp_q_write(struct adiv5_dap *dap, unsigned reg, - uint32_t data) -{ - return adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC, - reg, DPAP_WRITE, data, NULL); -} - -/** Select the AP register bank matching bits 7:4 of reg. */ -static int jtag_ap_q_bankselect(struct adiv5_dap *dap, unsigned reg) -{ - uint32_t select = reg & 0x000000F0; - - if (select == dap->ap_bank_value) - return ERROR_OK; - dap->ap_bank_value = select; - - select |= dap->apsel; - - return jtag_dp_q_write(dap, DP_SELECT, select); -} - -static int jtag_ap_q_read(struct adiv5_dap *dap, unsigned reg, - uint32_t *data) -{ - int retval = jtag_ap_q_bankselect(dap, reg); - - if (retval != ERROR_OK) - return retval; - - return adi_jtag_scan_inout_check_u32(dap, JTAG_DP_APACC, reg, - DPAP_READ, 0, data); -} - -static int jtag_ap_q_write(struct adiv5_dap *dap, unsigned reg, - uint32_t data) -{ - uint8_t out_value_buf[4]; - - int retval = jtag_ap_q_bankselect(dap, reg); - if (retval != ERROR_OK) - return retval; ->>>>>>> jtag: cut down on usage of unintended modification of global end state:src/target/arm_adi_v5.c - -/* FIXME don't import ... just initialize as - * part of DAP transport setup -*/ -extern const struct dap_ops jtag_dp_ops; - -/*--------------------------------------------------------------------------*/ - -/** - * Initialize a DAP. This sets up the power domains, prepares the DP - * for further use, and arranges to use AP #0 for all AP operations - * until dap_ap-select() changes that policy. - * - * @param swjdp The DAP being initialized. - * - * @todo Rename this. We also need an initialization scheme which account - * for SWD transports not just JTAG; that will need to address differences - * in layering. (JTAG is useful without any debug target; but not SWD.) - * And this may not even use an AHB-AP ... e.g. DAP-Lite uses an APB-AP. - */ -int ahbap_debugport_init(struct adiv5_dap *swjdp) -{ - uint32_t idreg, romaddr, dummy; - uint32_t ctrlstat; - int cnt = 0; - int retval; - - LOG_DEBUG(" "); - - /* JTAG-DP or SWJ-DP, in JTAG mode */ - swjdp->ops = &jtag_dp_ops; - - /* Default MEM-AP setup. - * - * REVISIT AP #0 may be an inappropriate default for this. - * Should we probe, or take a hint from the caller? - * Presumably we can ignore the possibility of multiple APs. - */ - swjdp->apsel = !0; - dap_ap_select(swjdp, 0); - - /* DP initialization */ - - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy); - if (retval != ERROR_OK) - return retval; - - retval = dap_queue_dp_write(swjdp, DP_CTRL_STAT, SSTICKYERR); - if (retval != ERROR_OK) - return retval; - - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy); - if (retval != ERROR_OK) - return retval; - - swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ; - retval = dap_queue_dp_write(swjdp, DP_CTRL_STAT, swjdp->dp_ctrl_stat); - if (retval != ERROR_OK) - return retval; - - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &ctrlstat); - if (retval != ERROR_OK) - return retval; - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - - /* Check that we have debug power domains activated */ - while (!(ctrlstat & CDBGPWRUPACK) && (cnt++ < 10)) - { - LOG_DEBUG("DAP: wait CDBGPWRUPACK"); - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &ctrlstat); - if (retval != ERROR_OK) - return retval; - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - alive_sleep(10); - } - - while (!(ctrlstat & CSYSPWRUPACK) && (cnt++ < 10)) - { - LOG_DEBUG("DAP: wait CSYSPWRUPACK"); - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &ctrlstat); - if (retval != ERROR_OK) - return retval; - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - alive_sleep(10); - } - - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy); - if (retval != ERROR_OK) - return retval; - /* With debug power on we can activate OVERRUN checking */ - swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ | CORUNDETECT; - retval = dap_queue_dp_write(swjdp, DP_CTRL_STAT, swjdp->dp_ctrl_stat); - if (retval != ERROR_OK) - return retval; - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy); - if (retval != ERROR_OK) - return retval; - - /* - * REVISIT this isn't actually *initializing* anything in an AP, - * and doesn't care if it's a MEM-AP at all (much less AHB-AP). - * Should it? If the ROM address is valid, is this the right - * place to scan the table and do any topology detection? - */ - retval = dap_queue_ap_read(swjdp, AP_REG_IDR, &idreg); - retval = dap_queue_ap_read(swjdp, AP_REG_BASE, &romaddr); - - LOG_DEBUG("MEM-AP #%d ID Register 0x%" PRIx32 - ", Debug ROM Address 0x%" PRIx32, - swjdp->apsel, idreg, romaddr); - - return ERROR_OK; -} - -/* CID interpretation -- see ARM IHI 0029B section 3 - * and ARM IHI 0031A table 13-3. - */ -static const char *class_description[16] ={ - "Reserved", "ROM table", "Reserved", "Reserved", - "Reserved", "Reserved", "Reserved", "Reserved", - "Reserved", "CoreSight component", "Reserved", "Peripheral Test Block", - "Reserved", "OptimoDE DESS", - "Generic IP component", "PrimeCell or System component" -}; - -static bool -is_dap_cid_ok(uint32_t cid3, uint32_t cid2, uint32_t cid1, uint32_t cid0) -{ - return cid3 == 0xb1 && cid2 == 0x05 - && ((cid1 & 0x0f) == 0) && cid0 == 0x0d; -} - -static int dap_info_command(struct command_context *cmd_ctx, - struct adiv5_dap *swjdp, int apsel) -{ - int retval; - uint32_t dbgbase, apid; - int romtable_present = 0; - uint8_t mem_ap; - uint32_t apselold; - - /* AP address is in bits 31:24 of DP_SELECT */ - if (apsel >= 256) - return ERROR_INVALID_ARGUMENTS; - - apselold = swjdp->apsel; - dap_ap_select(swjdp, apsel); - retval = dap_queue_ap_read(swjdp, AP_REG_BASE, &dbgbase); - retval = dap_queue_ap_read(swjdp, AP_REG_IDR, &apid); - retval = dap_run(swjdp); - if (retval != ERROR_OK) - return retval; - - /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */ - mem_ap = ((apid&0x10000) && ((apid&0x0F) != 0)); - command_print(cmd_ctx, "AP ID register 0x%8.8" PRIx32, apid); - if (apid) - { - switch (apid&0x0F) - { - case 0: - command_print(cmd_ctx, "\tType is JTAG-AP"); - break; - case 1: - command_print(cmd_ctx, "\tType is MEM-AP AHB"); - break; - case 2: - command_print(cmd_ctx, "\tType is MEM-AP APB"); - break; - default: - command_print(cmd_ctx, "\tUnknown AP type"); - break; - } - - /* NOTE: a MEM-AP may have a single CoreSight component that's - * not a ROM table ... or have no such components at all. - */ - if (mem_ap) - command_print(cmd_ctx, "AP BASE 0x%8.8" PRIx32, - dbgbase); - } - else - { - command_print(cmd_ctx, "No AP found at this apsel 0x%x", apsel); - } - - romtable_present = ((mem_ap) && (dbgbase != 0xFFFFFFFF)); - if (romtable_present) - { - uint32_t cid0,cid1,cid2,cid3,memtype,romentry; - uint16_t entry_offset; - - /* bit 16 of apid indicates a memory access port */ - if (dbgbase & 0x02) - command_print(cmd_ctx, "\tValid ROM table present"); - else - command_print(cmd_ctx, "\tROM table in legacy format"); - - /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */ - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFF0, &cid0); - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFF4, &cid1); - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFF8, &cid2); - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFFC, &cid3); - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFCC, &memtype); - retval = dap_run(swjdp); - if (retval != ERROR_OK) - return retval; - - if (!is_dap_cid_ok(cid3, cid2, cid1, cid0)) - command_print(cmd_ctx, "\tCID3 0x%2.2" PRIx32 - ", CID2 0x%2.2" PRIx32 - ", CID1 0x%2.2" PRIx32 - ", CID0 0x%2.2" PRIx32, - cid3, cid2, cid1, cid0); - if (memtype & 0x01) - command_print(cmd_ctx, "\tMEMTYPE system memory present on bus"); - else - command_print(cmd_ctx, "\tMEMTYPE System memory not present. " - "Dedicated debug bus."); - - /* Now we read ROM table entries from dbgbase&0xFFFFF000) | 0x000 until we get 0x00000000 */ - entry_offset = 0; - do - { - mem_ap_read_atomic_u32(swjdp, (dbgbase&0xFFFFF000) | entry_offset, &romentry); - command_print(cmd_ctx, "\tROMTABLE[0x%x] = 0x%" PRIx32 "",entry_offset,romentry); - if (romentry&0x01) - { - uint32_t c_cid0, c_cid1, c_cid2, c_cid3; - uint32_t c_pid0, c_pid1, c_pid2, c_pid3, c_pid4; - uint32_t component_start, component_base; - unsigned part_num; - char *type, *full; - - component_base = (uint32_t)((dbgbase & 0xFFFFF000) - + (int)(romentry & 0xFFFFF000)); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFE0, &c_pid0); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFE4, &c_pid1); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFE8, &c_pid2); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFEC, &c_pid3); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFD0, &c_pid4); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFF0, &c_cid0); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFF4, &c_cid1); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFF8, &c_cid2); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFFC, &c_cid3); - component_start = component_base - 0x1000*(c_pid4 >> 4); - - command_print(cmd_ctx, "\t\tComponent base address 0x%" PRIx32 - ", start address 0x%" PRIx32, - component_base, component_start); - command_print(cmd_ctx, "\t\tComponent class is 0x%x, %s", - (int) (c_cid1 >> 4) & 0xf, - /* See ARM IHI 0029B Table 3-3 */ - class_description[(c_cid1 >> 4) & 0xf]); - - /* CoreSight component? */ - if (((c_cid1 >> 4) & 0x0f) == 9) { - uint32_t devtype; - unsigned minor; - char *major = "Reserved", *subtype = "Reserved"; - - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xfffff000) | 0xfcc, - &devtype); - minor = (devtype >> 4) & 0x0f; - switch (devtype & 0x0f) { - case 0: - major = "Miscellaneous"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 4: - subtype = "Validation component"; - break; - } - break; - case 1: - major = "Trace Sink"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Port"; - break; - case 2: - subtype = "Buffer"; - break; - } - break; - case 2: - major = "Trace Link"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Funnel, router"; - break; - case 2: - subtype = "Filter"; - break; - case 3: - subtype = "FIFO, buffer"; - break; - } - break; - case 3: - major = "Trace Source"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Processor"; - break; - case 2: - subtype = "DSP"; - break; - case 3: - subtype = "Engine/Coprocessor"; - break; - case 4: - subtype = "Bus"; - break; - } - break; - case 4: - major = "Debug Control"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Trigger Matrix"; - break; - case 2: - subtype = "Debug Auth"; - break; - } - break; - case 5: - major = "Debug Logic"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Processor"; - break; - case 2: - subtype = "DSP"; - break; - case 3: - subtype = "Engine/Coprocessor"; - break; - } - break; - } - command_print(cmd_ctx, "\t\tType is 0x%2.2x, %s, %s", - (unsigned) (devtype & 0xff), - major, subtype); - /* REVISIT also show 0xfc8 DevId */ - } - - if (!is_dap_cid_ok(cid3, cid2, cid1, cid0)) - command_print(cmd_ctx, "\t\tCID3 0x%2.2" PRIx32 - ", CID2 0x%2.2" PRIx32 - ", CID1 0x%2.2" PRIx32 - ", CID0 0x%2.2" PRIx32, - c_cid3, c_cid2, c_cid1, c_cid0); - command_print(cmd_ctx, "\t\tPeripheral ID[4..0] = hex " - "%2.2x %2.2x %2.2x %2.2x %2.2x", - (int) c_pid4, - (int) c_pid3, (int) c_pid2, - (int) c_pid1, (int) c_pid0); - - /* Part number interpretations are from Cortex - * core specs, the CoreSight components TRM - * (ARM DDI 0314H), and ETM specs; also from - * chip observation (e.g. TI SDTI). - */ - part_num = c_pid0 & 0xff; - part_num |= (c_pid1 & 0x0f) << 8; - switch (part_num) { - case 0x000: - type = "Cortex-M3 NVIC"; - full = "(Interrupt Controller)"; - break; - case 0x001: - type = "Cortex-M3 ITM"; - full = "(Instrumentation Trace Module)"; - break; - case 0x002: - type = "Cortex-M3 DWT"; - full = "(Data Watchpoint and Trace)"; - break; - case 0x003: - type = "Cortex-M3 FBP"; - full = "(Flash Patch and Breakpoint)"; - break; - case 0x00d: - type = "CoreSight ETM11"; - full = "(Embedded Trace)"; - break; - // case 0x113: what? - case 0x120: /* from OMAP3 memmap */ - type = "TI SDTI"; - full = "(System Debug Trace Interface)"; - break; - case 0x343: /* from OMAP3 memmap */ - type = "TI DAPCTL"; - full = ""; - break; - case 0x906: - type = "Coresight CTI"; - full = "(Cross Trigger)"; - break; - case 0x907: - type = "Coresight ETB"; - full = "(Trace Buffer)"; - break; - case 0x908: - type = "Coresight CSTF"; - full = "(Trace Funnel)"; - break; - case 0x910: - type = "CoreSight ETM9"; - full = "(Embedded Trace)"; - break; - case 0x912: - type = "Coresight TPIU"; - full = "(Trace Port Interface Unit)"; - break; - case 0x921: - type = "Cortex-A8 ETM"; - full = "(Embedded Trace)"; - break; - case 0x922: - type = "Cortex-A8 CTI"; - full = "(Cross Trigger)"; - break; - case 0x923: - type = "Cortex-M3 TPIU"; - full = "(Trace Port Interface Unit)"; - break; - case 0x924: - type = "Cortex-M3 ETM"; - full = "(Embedded Trace)"; - break; - case 0xc08: - type = "Cortex-A8 Debug"; - full = "(Debug Unit)"; - break; - default: - type = "-*- unrecognized -*-"; - full = ""; - break; - } - command_print(cmd_ctx, "\t\tPart is %s %s", - type, full); - } - else - { - if (romentry) - command_print(cmd_ctx, "\t\tComponent not present"); - else - command_print(cmd_ctx, "\t\tEnd of ROM table"); - } - entry_offset += 4; - } while (romentry > 0); - } - else - { - command_print(cmd_ctx, "\tNo ROM table present"); - } - dap_ap_select(swjdp, apselold); - - return ERROR_OK; -} - -COMMAND_HANDLER(handle_dap_info_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - uint32_t apsel; - - switch (CMD_ARGC) { - case 0: - apsel = dap->apsel; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel); - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - - return dap_info_command(CMD_CTX, dap, apsel); -} - -COMMAND_HANDLER(dap_baseaddr_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - - uint32_t apsel, apselsave, baseaddr; - int retval; - - apselsave = dap->apsel; - switch (CMD_ARGC) { - case 0: - apsel = dap->apsel; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel); - /* AP address is in bits 31:24 of DP_SELECT */ - if (apsel >= 256) - return ERROR_INVALID_ARGUMENTS; - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - - if (apselsave != apsel) - dap_ap_select(dap, apsel); - - /* NOTE: assumes we're talking to a MEM-AP, which - * has a base address. There are other kinds of AP, - * though they're not common for now. This should - * use the ID register to verify it's a MEM-AP. - */ - retval = dap_queue_ap_read(dap, AP_REG_BASE, &baseaddr); - retval = dap_run(dap); - if (retval != ERROR_OK) - return retval; - - command_print(CMD_CTX, "0x%8.8" PRIx32, baseaddr); - - if (apselsave != apsel) - dap_ap_select(dap, apselsave); - - return retval; -} - -COMMAND_HANDLER(dap_memaccess_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - - uint32_t memaccess_tck; - - switch (CMD_ARGC) { - case 0: - memaccess_tck = dap->memaccess_tck; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], memaccess_tck); - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - dap->memaccess_tck = memaccess_tck; - - command_print(CMD_CTX, "memory bus access delay set to %" PRIi32 " tck", - dap->memaccess_tck); - - return ERROR_OK; -} - -COMMAND_HANDLER(dap_apsel_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - - uint32_t apsel, apid; - int retval; - - switch (CMD_ARGC) { - case 0: - apsel = 0; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel); - /* AP address is in bits 31:24 of DP_SELECT */ - if (apsel >= 256) - return ERROR_INVALID_ARGUMENTS; - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - - dap_ap_select(dap, apsel); - retval = dap_queue_ap_read(dap, AP_REG_IDR, &apid); - retval = dap_run(dap); - if (retval != ERROR_OK) - return retval; - - command_print(CMD_CTX, "ap %" PRIi32 " selected, identification register 0x%8.8" PRIx32, - apsel, apid); - - return retval; -} - -COMMAND_HANDLER(dap_apid_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - - uint32_t apsel, apselsave, apid; - int retval; - - apselsave = dap->apsel; - switch (CMD_ARGC) { - case 0: - apsel = dap->apsel; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel); - /* AP address is in bits 31:24 of DP_SELECT */ - if (apsel >= 256) - return ERROR_INVALID_ARGUMENTS; - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - - if (apselsave != apsel) - dap_ap_select(dap, apsel); - - retval = dap_queue_ap_read(dap, AP_REG_IDR, &apid); - retval = dap_run(dap); - if (retval != ERROR_OK) - return retval; - - command_print(CMD_CTX, "0x%8.8" PRIx32, apid); - if (apselsave != apsel) - dap_ap_select(dap, apselsave); - - return retval; -} - -static const struct command_registration dap_commands[] = { - { - .name = "info", - .handler = handle_dap_info_command, - .mode = COMMAND_EXEC, - .help = "display ROM table for MEM-AP " - "(default currently selected AP)", - .usage = "[ap_num]", - }, - { - .name = "apsel", - .handler = dap_apsel_command, - .mode = COMMAND_EXEC, - .help = "Set the currently selected AP (default 0) " - "and display the result", - .usage = "[ap_num]", - }, - { - .name = "apid", - .handler = dap_apid_command, - .mode = COMMAND_EXEC, - .help = "return ID register from AP " - "(default currently selected AP)", - .usage = "[ap_num]", - }, - { - .name = "baseaddr", - .handler = dap_baseaddr_command, - .mode = COMMAND_EXEC, - .help = "return debug base address from MEM-AP " - "(default currently selected AP)", - .usage = "[ap_num]", - }, - { - .name = "memaccess", - .handler = dap_memaccess_command, - .mode = COMMAND_EXEC, - .help = "set/get number of extra tck for MEM-AP memory " - "bus access [0-255]", - .usage = "[cycles]", - }, - COMMAND_REGISTRATION_DONE -}; - -const struct command_registration dap_command_handlers[] = { - { - .name = "dap", - .mode = COMMAND_EXEC, - .help = "DAP command group", - .chain = dap_commands, - }, - COMMAND_REGISTRATION_DONE -}; - - -/* - * This represents the bits which must be sent out on TMS/SWDIO to - * switch a DAP implemented using an SWJ-DP module into SWD mode. - * These bits are stored (and transmitted) LSB-first. - * - * See the DAP-Lite specification, section 2.2.5 for information - * about making the debug link select SWD or JTAG. (Similar info - * is in a few other ARM documents.) - */ -static const uint8_t jtag2swd_bitseq[] = { - /* More than 50 TCK/SWCLK cycles with TMS/SWDIO high, - * putting both JTAG and SWD logic into reset state. - */ - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - /* Switching sequence enables SWD and disables JTAG - * NOTE: bits in the DP's IDCODE may expose the need for - * an old/deprecated sequence (0xb6 0xed). - */ - 0x9e, 0xe7, - /* More than 50 TCK/SWCLK cycles with TMS/SWDIO high, - * putting both JTAG and SWD logic into reset state. - */ - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, -}; - -/** - * Put the debug link into SWD mode, if the target supports it. - * The link's initial mode may be either JTAG (for example, - * with SWJ-DP after reset) or SWD. - * - * @param target Enters SWD mode (if possible). - * - * Note that targets using the JTAG-DP do not support SWD, and that - * some targets which could otherwise support it may have have been - * configured to disable SWD signaling - * - * @return ERROR_OK or else a fault code. - */ -int dap_to_swd(struct target *target) -{ - int retval; - - LOG_DEBUG("Enter SWD mode"); - - /* REVISIT it's nasty to need to make calls to a "jtag" - * subsystem if the link isn't in JTAG mode... - */ - - retval = jtag_add_tms_seq(8 * sizeof(jtag2swd_bitseq), - jtag2swd_bitseq, TAP_INVALID); - if (retval == ERROR_OK) - retval = jtag_execute_queue(); - - /* REVISIT set up the DAP's ops vector for SWD mode. */ - - return retval; -} - diff --git a/src/target/arm_adi_v5.c~ b/src/target/arm_adi_v5.c~ deleted file mode 100644 index 708e8581..00000000 --- a/src/target/arm_adi_v5.c~ +++ /dev/null @@ -1,1981 +0,0 @@ -/*************************************************************************** - * Copyright (C) 2006 by Magnus Lundin * - * lundin@mlu.mine.nu * - * * - * Copyright (C) 2008 by Spencer Oliver * - * spen@spen-soft.co.uk * - * * - * Copyright (C) 2009 by Oyvind Harboe * - * oyvind.harboe@zylin.com * - * * - * Copyright (C) 2009-2010 by David Brownell * - * * - * This program is free software; you can redistribute it and/or modify * - * it under the terms of the GNU General Public License as published by * - * the Free Software Foundation; either version 2 of the License, or * - * (at your option) any later version. * - * * - * This program is distributed in the hope that it will be useful, * - * but WITHOUT ANY WARRANTY; without even the implied warranty of * - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * - * GNU General Public License for more details. * - * * - * You should have received a copy of the GNU General Public License * - * along with this program; if not, write to the * - * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - ***************************************************************************/ - -/** - * @file - * This file implements support for the ARM Debug Interface version 5 (ADIv5) - * debugging architecture. Compared with previous versions, this includes - * a low pin-count Serial Wire Debug (SWD) alternative to JTAG for message - * transport, and focusses on memory mapped resources as defined by the - * CoreSight architecture. - * - * A key concept in ADIv5 is the Debug Access Port, or DAP. A DAP has two - * basic components: a Debug Port (DP) transporting messages to and from a - * debugger, and an Access Port (AP) accessing resources. Three types of DP - * are defined. One uses only JTAG for communication, and is called JTAG-DP. - * One uses only SWD for communication, and is called SW-DP. The third can - * use either SWD or JTAG, and is called SWJ-DP. The most common type of AP - * is used to access memory mapped resources and is called a MEM-AP. Also a - * JTAG-AP is also defined, bridging to JTAG resources; those are uncommon. - * - * This programming interface allows DAP pipelined operations through a - * transaction queue. This primarily affects AP operations (such as using - * a MEM-AP to access memory or registers). If the current transaction has - * not finished by the time the next one must begin, and the ORUNDETECT bit - * is set in the DP_CTRL_STAT register, the SSTICKYORUN status is set and - * further AP operations will fail. There are two basic methods to avoid - * such overrun errors. One involves polling for status instead of using - * transaction piplining. The other involves adding delays to ensure the - * AP has enough time to complete one operation before starting the next - * one. (For JTAG these delays are controlled by memaccess_tck.) - */ - -/* - * Relevant specifications from ARM include: - * - * ARM(tm) Debug Interface v5 Architecture Specification ARM IHI 0031A - * CoreSight(tm) v1.0 Architecture Specification ARM IHI 0029B - * - * CoreSight(tm) DAP-Lite TRM, ARM DDI 0316D - * Cortex-M3(tm) TRM, ARM DDI 0337G - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "arm.h" -#include "arm_adi_v5.h" -#include <helper/time_support.h> - - -/* ARM ADI Specification requires at least 10 bits used for TAR autoincrement */ - -/* - uint32_t tar_block_size(uint32_t address) - Return the largest block starting at address that does not cross a tar block size alignment boundary -*/ -static uint32_t max_tar_block_size(uint32_t tar_autoincr_block, uint32_t address) -{ - return (tar_autoincr_block - ((tar_autoincr_block - 1) & address)) >> 2; -} - -/*************************************************************************** - * * -<<<<<<< HEAD:src/target/arm_adi_v5.c -======= - * DPACC and APACC scanchain access through JTAG-DP * - * * -***************************************************************************/ - -/** - * Scan DPACC or APACC using target ordered uint8_t buffers. No endianness - * conversions are performed. See section 4.4.3 of the ADIv5 spec, which - * discusses operations which access these registers. - * - * Note that only one scan is performed. If RnW is set, a separate scan - * will be needed to collect the data which was read; the "invalue" collects - * the posted result of a preceding operation, not the current one. - * - * @param swjdp the DAP - * @param instr JTAG_DP_APACC (AP access) or JTAG_DP_DPACC (DP access) - * @param reg_addr two significant bits; A[3:2]; for APACC access, the - * SELECT register has more addressing bits. - * @param RnW false iff outvalue will be written to the DP or AP - * @param outvalue points to a 32-bit (little-endian) integer - * @param invalue NULL, or points to a 32-bit (little-endian) integer - * @param ack points to where the three bit JTAG_ACK_* code will be stored - */ -static int adi_jtag_dp_scan(struct adiv5_dap *swjdp, - uint8_t instr, uint8_t reg_addr, uint8_t RnW, - uint8_t *outvalue, uint8_t *invalue, uint8_t *ack) -{ - struct arm_jtag *jtag_info = swjdp->jtag_info; - struct scan_field fields[2]; - uint8_t out_addr_buf; - - jtag_set_end_state(TAP_IDLE); - arm_jtag_set_instr(jtag_info, instr, NULL); - - /* Scan out a read or write operation using some DP or AP register. - * For APACC access with any sticky error flag set, this is discarded. - */ - fields[0].num_bits = 3; - buf_set_u32(&out_addr_buf, 0, 3, ((reg_addr >> 1) & 0x6) | (RnW & 0x1)); - fields[0].out_value = &out_addr_buf; - fields[0].in_value = ack; - - /* NOTE: if we receive JTAG_ACK_WAIT, the previous operation did not - * complete; data we write is discarded, data we read is unpredictable. - * When overrun detect is active, STICKYORUN is set. - */ - - fields[1].num_bits = 32; - fields[1].out_value = outvalue; - fields[1].in_value = invalue; - - jtag_add_dr_scan(jtag_info->tap, 2, fields, TAP_IDLE); - - /* Add specified number of tck clocks after starting memory bus - * access, giving the hardware time to complete the access. - * They provide more time for the (MEM) AP to complete the read ... - * See "Minimum Response Time" for JTAG-DP, in the ADIv5 spec. - */ - if ((instr == JTAG_DP_APACC) - && ((reg_addr == AP_REG_DRW) - || ((reg_addr & 0xF0) == AP_REG_BD0)) - && (swjdp->memaccess_tck != 0)) - jtag_add_runtest(swjdp->memaccess_tck, - TAP_IDLE); - - return jtag_get_error(); -} - -/** - * Scan DPACC or APACC out and in from host ordered uint32_t buffers. - * This is exactly like adi_jtag_dp_scan(), except that endianness - * conversions are performed (so the types of invalue and outvalue - * must be different). - */ -static int adi_jtag_dp_scan_u32(struct adiv5_dap *swjdp, - uint8_t instr, uint8_t reg_addr, uint8_t RnW, - uint32_t outvalue, uint32_t *invalue, uint8_t *ack) -{ - uint8_t out_value_buf[4]; - int retval; - - buf_set_u32(out_value_buf, 0, 32, outvalue); - - retval = adi_jtag_dp_scan(swjdp, instr, reg_addr, RnW, - out_value_buf, (uint8_t *)invalue, ack); - if (retval != ERROR_OK) - return retval; - - if (invalue) - jtag_add_callback(arm_le_to_h_u32, - (jtag_callback_data_t) invalue); - - return retval; -} - -/** - * Utility to write AP registers. - */ -static inline int adi_jtag_ap_write_check(struct adiv5_dap *dap, - uint8_t reg_addr, uint8_t *outvalue) -{ - return adi_jtag_dp_scan(dap, JTAG_DP_APACC, reg_addr, DPAP_WRITE, - outvalue, NULL, NULL); -} - -static int adi_jtag_scan_inout_check_u32(struct adiv5_dap *swjdp, - uint8_t instr, uint8_t reg_addr, uint8_t RnW, - uint32_t outvalue, uint32_t *invalue) -{ - int retval; - - /* Issue the read or write */ - retval = adi_jtag_dp_scan_u32(swjdp, instr, reg_addr, - RnW, outvalue, NULL, NULL); - if (retval != ERROR_OK) - return retval; - - /* For reads, collect posted value; RDBUFF has no other effect. - * Assumes read gets acked with OK/FAULT, and CTRL_STAT says "OK". - */ - if ((RnW == DPAP_READ) && (invalue != NULL)) - retval = adi_jtag_dp_scan_u32(swjdp, JTAG_DP_DPACC, - DP_RDBUFF, DPAP_READ, 0, invalue, &swjdp->ack); - return retval; -} - -static int jtagdp_transaction_endcheck(struct adiv5_dap *swjdp) -{ - int retval; - uint32_t ctrlstat; - - /* too expensive to call keep_alive() here */ - -#if 0 - /* Danger!!!! BROKEN!!!! */ - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); - /* Danger!!!! BROKEN!!!! Why will jtag_execute_queue() fail here???? - R956 introduced the check on return value here and now Michael Schwingen reports - that this code no longer works.... - - https://lists.berlios.de/pipermail/openocd-development/2008-September/003107.html - */ - if ((retval = jtag_execute_queue()) != ERROR_OK) - { - LOG_ERROR("BUG: Why does this fail the first time????"); - } - /* Why??? second time it works??? */ -#endif - - /* Post CTRL/STAT read; discard any previous posted read value - * but collect its ACK status. - */ - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); - if ((retval = jtag_execute_queue()) != ERROR_OK) - return retval; - - swjdp->ack = swjdp->ack & 0x7; - - /* common code path avoids calling timeval_ms() */ - if (swjdp->ack != JTAG_ACK_OK_FAULT) - { - long long then = timeval_ms(); - - while (swjdp->ack != JTAG_ACK_OK_FAULT) - { - if (swjdp->ack == JTAG_ACK_WAIT) - { - if ((timeval_ms()-then) > 1000) - { - /* NOTE: this would be a good spot - * to use JTAG_DP_ABORT. - */ - LOG_WARNING("Timeout (1000ms) waiting " - "for ACK=OK/FAULT " - "in JTAG-DP transaction"); - return ERROR_JTAG_DEVICE_ERROR; - } - } - else - { - LOG_WARNING("Invalid ACK %#x " - "in JTAG-DP transaction", - swjdp->ack); - return ERROR_JTAG_DEVICE_ERROR; - } - - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - swjdp->ack = swjdp->ack & 0x7; - } - } - - /* REVISIT also STICKYCMP, for pushed comparisons (nyet used) */ - - /* Check for STICKYERR and STICKYORUN */ - if (ctrlstat & (SSTICKYORUN | SSTICKYERR)) - { - LOG_DEBUG("jtag-dp: CTRL/STAT error, 0x%" PRIx32, ctrlstat); - /* Check power to debug regions */ - if ((ctrlstat & 0xf0000000) != 0xf0000000) - ahbap_debugport_init(swjdp); - else - { - uint32_t mem_ap_csw, mem_ap_tar; - - /* Maybe print information about last intended - * MEM-AP access; but not if autoincrementing. - * *Real* CSW and TAR values are always shown. - */ - if (swjdp->ap_tar_value != (uint32_t) -1) - LOG_DEBUG("MEM-AP Cached values: " - "ap_bank 0x%" PRIx32 - ", ap_csw 0x%" PRIx32 - ", ap_tar 0x%" PRIx32, - swjdp->ap_bank_value, - swjdp->ap_csw_value, - swjdp->ap_tar_value); - - if (ctrlstat & SSTICKYORUN) - LOG_ERROR("JTAG-DP OVERRUN - check clock, " - "memaccess, or reduce jtag speed"); - - if (ctrlstat & SSTICKYERR) - LOG_ERROR("JTAG-DP STICKY ERROR"); - - /* Clear Sticky Error Bits */ - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_WRITE, - swjdp->dp_ctrl_stat | SSTICKYORUN - | SSTICKYERR, NULL); - adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC, - DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - - LOG_DEBUG("jtag-dp: CTRL/STAT 0x%" PRIx32, ctrlstat); - - retval = dap_queue_ap_read(swjdp, - AP_REG_CSW, &mem_ap_csw); - if (retval != ERROR_OK) - return retval; - - retval = dap_queue_ap_read(swjdp, - AP_REG_TAR, &mem_ap_tar); - if (retval != ERROR_OK) - return retval; - - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - LOG_ERROR("MEM_AP_CSW 0x%" PRIx32 ", MEM_AP_TAR 0x%" - PRIx32, mem_ap_csw, mem_ap_tar); - - } - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - return ERROR_JTAG_DEVICE_ERROR; - } - - return ERROR_OK; -} - -/*************************************************************************** - * * ->>>>>>> jtag: cut down on usage of unintended modification of global end state:src/target/arm_adi_v5.c - * DP and MEM-AP register access through APACC and DPACC * - * * -***************************************************************************/ - -/** - * Select one of the APs connected to the specified DAP. The - * selection is implicitly used with future AP transactions. - * This is a NOP if the specified AP is already selected. - * - * @param swjdp The DAP - * @param apsel Number of the AP to (implicitly) use with further - * transactions. This normally identifies a MEM-AP. - */ -void dap_ap_select(struct adiv5_dap *swjdp,uint8_t apsel) -{ - uint32_t select = (apsel << 24) & 0xFF000000; - - if (select != swjdp->apsel) - { - swjdp->apsel = select; - /* Switching AP invalidates cached values. - * Values MUST BE UPDATED BEFORE AP ACCESS. - */ - swjdp->ap_bank_value = -1; - swjdp->ap_csw_value = -1; - swjdp->ap_tar_value = -1; - } -} - -/** - * Queue transactions setting up transfer parameters for the - * currently selected MEM-AP. - * - * Subsequent transfers using registers like AP_REG_DRW or AP_REG_BD2 - * initiate data reads or writes using memory or peripheral addresses. - * If the CSW is configured for it, the TAR may be automatically - * incremented after each transfer. - * - * @todo Rename to reflect it being specifically a MEM-AP function. - * - * @param swjdp The DAP connected to the MEM-AP. - * @param csw MEM-AP Control/Status Word (CSW) register to assign. If this - * matches the cached value, the register is not changed. - * @param tar MEM-AP Transfer Address Register (TAR) to assign. If this - * matches the cached address, the register is not changed. - * - * @return ERROR_OK if the transaction was properly queued, else a fault code. - */ -int dap_setup_accessport(struct adiv5_dap *swjdp, uint32_t csw, uint32_t tar) -{ - int retval; - - csw = csw | CSW_DBGSWENABLE | CSW_MASTER_DEBUG | CSW_HPROT; - if (csw != swjdp->ap_csw_value) - { - /* LOG_DEBUG("DAP: Set CSW %x",csw); */ - retval = dap_queue_ap_write(swjdp, AP_REG_CSW, csw); - if (retval != ERROR_OK) - return retval; - swjdp->ap_csw_value = csw; - } - if (tar != swjdp->ap_tar_value) - { - /* LOG_DEBUG("DAP: Set TAR %x",tar); */ - retval = dap_queue_ap_write(swjdp, AP_REG_TAR, tar); - if (retval != ERROR_OK) - return retval; - swjdp->ap_tar_value = tar; - } - /* Disable TAR cache when autoincrementing */ - if (csw & CSW_ADDRINC_MASK) - swjdp->ap_tar_value = -1; - return ERROR_OK; -} - -/** - * Asynchronous (queued) read of a word from memory or a system register. - * - * @param swjdp The DAP connected to the MEM-AP performing the read. - * @param address Address of the 32-bit word to read; it must be - * readable by the currently selected MEM-AP. - * @param value points to where the word will be stored when the - * transaction queue is flushed (assuming no errors). - * - * @return ERROR_OK for success. Otherwise a fault code. - */ -int mem_ap_read_u32(struct adiv5_dap *swjdp, uint32_t address, - uint32_t *value) -{ - int retval; - - /* Use banked addressing (REG_BDx) to avoid some link traffic - * (updating TAR) when reading several consecutive addresses. - */ - retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, - address & 0xFFFFFFF0); - if (retval != ERROR_OK) - return retval; - - return dap_queue_ap_read(swjdp, AP_REG_BD0 | (address & 0xC), value); -} - -/** - * Synchronous read of a word from memory or a system register. - * As a side effect, this flushes any queued transactions. - * - * @param swjdp The DAP connected to the MEM-AP performing the read. - * @param address Address of the 32-bit word to read; it must be - * readable by the currently selected MEM-AP. - * @param value points to where the result will be stored. - * - * @return ERROR_OK for success; *value holds the result. - * Otherwise a fault code. - */ -int mem_ap_read_atomic_u32(struct adiv5_dap *swjdp, uint32_t address, - uint32_t *value) -{ - int retval; - - retval = mem_ap_read_u32(swjdp, address, value); - if (retval != ERROR_OK) - return retval; - - return dap_run(swjdp); -} - -/** - * Asynchronous (queued) write of a word to memory or a system register. - * - * @param swjdp The DAP connected to the MEM-AP. - * @param address Address to be written; it must be writable by - * the currently selected MEM-AP. - * @param value Word that will be written to the address when transaction - * queue is flushed (assuming no errors). - * - * @return ERROR_OK for success. Otherwise a fault code. - */ -int mem_ap_write_u32(struct adiv5_dap *swjdp, uint32_t address, - uint32_t value) -{ - int retval; - - /* Use banked addressing (REG_BDx) to avoid some link traffic - * (updating TAR) when writing several consecutive addresses. - */ - retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, - address & 0xFFFFFFF0); - if (retval != ERROR_OK) - return retval; - - return dap_queue_ap_write(swjdp, AP_REG_BD0 | (address & 0xC), - value); -} - -/** - * Synchronous write of a word to memory or a system register. - * As a side effect, this flushes any queued transactions. - * - * @param swjdp The DAP connected to the MEM-AP. - * @param address Address to be written; it must be writable by - * the currently selected MEM-AP. - * @param value Word that will be written. - * - * @return ERROR_OK for success; the data was written. Otherwise a fault code. - */ -int mem_ap_write_atomic_u32(struct adiv5_dap *swjdp, uint32_t address, - uint32_t value) -{ - int retval = mem_ap_write_u32(swjdp, address, value); - - if (retval != ERROR_OK) - return retval; - - return dap_run(swjdp); -} - -/***************************************************************************** -* * -* mem_ap_write_buf(struct adiv5_dap *swjdp, uint8_t *buffer, int count, uint32_t address) * -* * -* Write a buffer in target order (little endian) * -* * -*****************************************************************************/ -int mem_ap_write_buf_u32(struct adiv5_dap *swjdp, uint8_t *buffer, int count, uint32_t address) -{ - int wcount, blocksize, writecount, errorcount = 0, retval = ERROR_OK; - uint32_t adr = address; - uint8_t* pBuffer = buffer; - - count >>= 2; - wcount = count; - - /* if we have an unaligned access - reorder data */ - if (adr & 0x3u) - { - for (writecount = 0; writecount < count; writecount++) - { - int i; - uint32_t outvalue; - memcpy(&outvalue, pBuffer, sizeof(uint32_t)); - - for (i = 0; i < 4; i++) - { - *((uint8_t*)pBuffer + (adr & 0x3)) = outvalue; - outvalue >>= 8; - adr++; - } - pBuffer += sizeof(uint32_t); - } - } - - while (wcount > 0) - { - /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - if (wcount < blocksize) - blocksize = wcount; - - /* handle unaligned data at 4k boundary */ - if (blocksize == 0) - blocksize = 1; - - dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address); - - for (writecount = 0; writecount < blocksize; writecount++) - { - retval = dap_queue_ap_write(swjdp, AP_REG_DRW, - *(uint32_t *) (buffer + 4 * writecount)); - if (retval != ERROR_OK) - break; - } - - if (dap_run(swjdp) == ERROR_OK) - { - wcount = wcount - blocksize; - address = address + 4 * blocksize; - buffer = buffer + 4 * blocksize; - } - else - { - errorcount++; - } - - if (errorcount > 1) - { - LOG_WARNING("Block write error address 0x%" PRIx32 ", wcount 0x%x", address, wcount); - /* REVISIT return the *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - } - - return retval; -} - -static int mem_ap_write_buf_packed_u16(struct adiv5_dap *swjdp, - uint8_t *buffer, int count, uint32_t address) -{ - int retval = ERROR_OK; - int wcount, blocksize, writecount, i; - - wcount = count >> 1; - - while (wcount > 0) - { - int nbytes; - - /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - - if (wcount < blocksize) - blocksize = wcount; - - /* handle unaligned data at 4k boundary */ - if (blocksize == 0) - blocksize = 1; - - dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address); - writecount = blocksize; - - do - { - nbytes = MIN((writecount << 1), 4); - - if (nbytes < 4) - { - if (mem_ap_write_buf_u16(swjdp, buffer, - nbytes, address) != ERROR_OK) - { - LOG_WARNING("Block write error address " - "0x%" PRIx32 ", count 0x%x", - address, count); - return ERROR_JTAG_DEVICE_ERROR; - } - - address += nbytes >> 1; - } - else - { - uint32_t outvalue; - memcpy(&outvalue, buffer, sizeof(uint32_t)); - - for (i = 0; i < nbytes; i++) - { - *((uint8_t*)buffer + (address & 0x3)) = outvalue; - outvalue >>= 8; - address++; - } - - memcpy(&outvalue, buffer, sizeof(uint32_t)); - retval = dap_queue_ap_write(swjdp, - AP_REG_DRW, outvalue); - if (retval != ERROR_OK) - break; - - if (dap_run(swjdp) != ERROR_OK) - { - LOG_WARNING("Block write error address " - "0x%" PRIx32 ", count 0x%x", - address, count); - /* REVISIT return *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - } - - buffer += nbytes >> 1; - writecount -= nbytes >> 1; - - } while (writecount); - wcount -= blocksize; - } - - return retval; -} - -int mem_ap_write_buf_u16(struct adiv5_dap *swjdp, uint8_t *buffer, int count, uint32_t address) -{ - int retval = ERROR_OK; - - if (count >= 4) - return mem_ap_write_buf_packed_u16(swjdp, buffer, count, address); - - while (count > 0) - { - dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_SINGLE, address); - uint16_t svalue; - memcpy(&svalue, buffer, sizeof(uint16_t)); - uint32_t outvalue = (uint32_t)svalue << 8 * (address & 0x3); - retval = dap_queue_ap_write(swjdp, AP_REG_DRW, outvalue); - if (retval != ERROR_OK) - break; - - retval = dap_run(swjdp); - if (retval != ERROR_OK) - break; - - count -= 2; - address += 2; - buffer += 2; - } - - return retval; -} - -static int mem_ap_write_buf_packed_u8(struct adiv5_dap *swjdp, - uint8_t *buffer, int count, uint32_t address) -{ - int retval = ERROR_OK; - int wcount, blocksize, writecount, i; - - wcount = count; - - while (wcount > 0) - { - int nbytes; - - /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - - if (wcount < blocksize) - blocksize = wcount; - - dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address); - writecount = blocksize; - - do - { - nbytes = MIN(writecount, 4); - - if (nbytes < 4) - { - if (mem_ap_write_buf_u8(swjdp, buffer, nbytes, address) != ERROR_OK) - { - LOG_WARNING("Block write error address " - "0x%" PRIx32 ", count 0x%x", - address, count); - return ERROR_JTAG_DEVICE_ERROR; - } - - address += nbytes; - } - else - { - uint32_t outvalue; - memcpy(&outvalue, buffer, sizeof(uint32_t)); - - for (i = 0; i < nbytes; i++) - { - *((uint8_t*)buffer + (address & 0x3)) = outvalue; - outvalue >>= 8; - address++; - } - - memcpy(&outvalue, buffer, sizeof(uint32_t)); - retval = dap_queue_ap_write(swjdp, - AP_REG_DRW, outvalue); - if (retval != ERROR_OK) - break; - - if (dap_run(swjdp) != ERROR_OK) - { - LOG_WARNING("Block write error address " - "0x%" PRIx32 ", count 0x%x", - address, count); - /* REVISIT return *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - } - - buffer += nbytes; - writecount -= nbytes; - - } while (writecount); - wcount -= blocksize; - } - - return retval; -} - -int mem_ap_write_buf_u8(struct adiv5_dap *swjdp, uint8_t *buffer, int count, uint32_t address) -{ - int retval = ERROR_OK; - - if (count >= 4) - return mem_ap_write_buf_packed_u8(swjdp, buffer, count, address); - - while (count > 0) - { - dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address); - uint32_t outvalue = (uint32_t)*buffer << 8 * (address & 0x3); - retval = dap_queue_ap_write(swjdp, AP_REG_DRW, outvalue); - if (retval != ERROR_OK) - break; - - retval = dap_run(swjdp); - if (retval != ERROR_OK) - break; - - count--; - address++; - buffer++; - } - - return retval; -} - -/* FIXME don't import ... this is a temporary workaround for the - * mem_ap_read_buf_u32() mess, until it's no longer JTAG-specific. - */ -extern int adi_jtag_dp_scan(struct adiv5_dap *swjdp, - uint8_t instr, uint8_t reg_addr, uint8_t RnW, - uint8_t *outvalue, uint8_t *invalue, uint8_t *ack); - -/** - * Synchronously read a block of 32-bit words into a buffer - * @param swjdp The DAP connected to the MEM-AP. - * @param buffer where the words will be stored (in host byte order). - * @param count How many words to read. - * @param address Memory address from which to read words; all the - * words must be readable by the currently selected MEM-AP. - */ -int mem_ap_read_buf_u32(struct adiv5_dap *swjdp, uint8_t *buffer, - int count, uint32_t address) -{ - int wcount, blocksize, readcount, errorcount = 0, retval = ERROR_OK; - uint32_t adr = address; - uint8_t* pBuffer = buffer; - - count >>= 2; - wcount = count; - - while (wcount > 0) - { - /* Adjust to read blocks within boundaries aligned to the - * TAR autoincrement size (at least 2^10). Autoincrement - * mode avoids an extra per-word roundtrip to update TAR. - */ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, - address); - if (wcount < blocksize) - blocksize = wcount; - - /* handle unaligned data at 4k boundary */ - if (blocksize == 0) - blocksize = 1; - - dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, - address); - - /* FIXME remove these three calls to adi_jtag_dp_scan(), - * so this routine becomes transport-neutral. Be careful - * not to cause performance problems with JTAG; would it - * suffice to loop over dap_queue_ap_read(), or would that - * be slower when JTAG is the chosen transport? - */ - - /* Scan out first read */ - adi_jtag_dp_scan(swjdp, JTAG_DP_APACC, AP_REG_DRW, - DPAP_READ, 0, NULL, NULL); - for (readcount = 0; readcount < blocksize - 1; readcount++) - { - /* Scan out next read; scan in posted value for the - * previous one. Assumes read is acked "OK/FAULT", - * and CTRL_STAT says that meant "OK". - */ - adi_jtag_dp_scan(swjdp, JTAG_DP_APACC, AP_REG_DRW, - DPAP_READ, 0, buffer + 4 * readcount, - &swjdp->ack); - } - - /* Scan in last posted value; RDBUFF has no other effect, - * assuming ack is OK/FAULT and CTRL_STAT says "OK". - */ - adi_jtag_dp_scan(swjdp, JTAG_DP_DPACC, DP_RDBUFF, - DPAP_READ, 0, buffer + 4 * readcount, - &swjdp->ack); - if (dap_run(swjdp) == ERROR_OK) - { - wcount = wcount - blocksize; - address += 4 * blocksize; - buffer += 4 * blocksize; - } - else - { - errorcount++; - } - - if (errorcount > 1) - { - LOG_WARNING("Block read error address 0x%" PRIx32 - ", count 0x%x", address, count); - /* REVISIT return the *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - } - - /* if we have an unaligned access - reorder data */ - if (adr & 0x3u) - { - for (readcount = 0; readcount < count; readcount++) - { - int i; - uint32_t data; - memcpy(&data, pBuffer, sizeof(uint32_t)); - - for (i = 0; i < 4; i++) - { - *((uint8_t*)pBuffer) = - (data >> 8 * (adr & 0x3)); - pBuffer++; - adr++; - } - } - } - - return retval; -} - -static int mem_ap_read_buf_packed_u16(struct adiv5_dap *swjdp, - uint8_t *buffer, int count, uint32_t address) -{ - uint32_t invalue; - int retval = ERROR_OK; - int wcount, blocksize, readcount, i; - - wcount = count >> 1; - - while (wcount > 0) - { - int nbytes; - - /* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - if (wcount < blocksize) - blocksize = wcount; - - dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address); - - /* handle unaligned data at 4k boundary */ - if (blocksize == 0) - blocksize = 1; - readcount = blocksize; - - do - { - retval = dap_queue_ap_read(swjdp, AP_REG_DRW, &invalue); - if (dap_run(swjdp) != ERROR_OK) - { - LOG_WARNING("Block read error address 0x%" PRIx32 ", count 0x%x", address, count); - /* REVISIT return the *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - - nbytes = MIN((readcount << 1), 4); - - for (i = 0; i < nbytes; i++) - { - *((uint8_t*)buffer) = (invalue >> 8 * (address & 0x3)); - buffer++; - address++; - } - - readcount -= (nbytes >> 1); - } while (readcount); - wcount -= blocksize; - } - - return retval; -} - -/** - * Synchronously read a block of 16-bit halfwords into a buffer - * @param swjdp The DAP connected to the MEM-AP. - * @param buffer where the halfwords will be stored (in host byte order). - * @param count How many halfwords to read. - * @param address Memory address from which to read words; all the - * words must be readable by the currently selected MEM-AP. - */ -int mem_ap_read_buf_u16(struct adiv5_dap *swjdp, uint8_t *buffer, - int count, uint32_t address) -{ - uint32_t invalue, i; - int retval = ERROR_OK; - - if (count >= 4) - return mem_ap_read_buf_packed_u16(swjdp, buffer, count, address); - - while (count > 0) - { - dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_SINGLE, address); - retval = dap_queue_ap_read(swjdp, AP_REG_DRW, &invalue); - if (retval != ERROR_OK) - break; - - retval = dap_run(swjdp); - if (retval != ERROR_OK) - break; - - if (address & 0x1) - { - for (i = 0; i < 2; i++) - { - *((uint8_t*)buffer) = (invalue >> 8 * (address & 0x3)); - buffer++; - address++; - } - } - else - { - uint16_t svalue = (invalue >> 8 * (address & 0x3)); - memcpy(buffer, &svalue, sizeof(uint16_t)); - address += 2; - buffer += 2; - } - count -= 2; - } - - return retval; -} - -/* FIX!!! is this a potential performance bottleneck w.r.t. requiring too many - * roundtrips when jtag_execute_queue() has a large overhead(e.g. for USB)s? - * - * The solution is to arrange for a large out/in scan in this loop and - * and convert data afterwards. - */ -static int mem_ap_read_buf_packed_u8(struct adiv5_dap *swjdp, - uint8_t *buffer, int count, uint32_t address) -{ - uint32_t invalue; - int retval = ERROR_OK; - int wcount, blocksize, readcount, i; - - wcount = count; - - while (wcount > 0) - { - int nbytes; - - /* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/ - blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address); - - if (wcount < blocksize) - blocksize = wcount; - - dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address); - readcount = blocksize; - - do - { - retval = dap_queue_ap_read(swjdp, AP_REG_DRW, &invalue); - if (dap_run(swjdp) != ERROR_OK) - { - LOG_WARNING("Block read error address 0x%" PRIx32 ", count 0x%x", address, count); - /* REVISIT return the *actual* fault code */ - return ERROR_JTAG_DEVICE_ERROR; - } - - nbytes = MIN(readcount, 4); - - for (i = 0; i < nbytes; i++) - { - *((uint8_t*)buffer) = (invalue >> 8 * (address & 0x3)); - buffer++; - address++; - } - - readcount -= nbytes; - } while (readcount); - wcount -= blocksize; - } - - return retval; -} - -/** - * Synchronously read a block of bytes into a buffer - * @param swjdp The DAP connected to the MEM-AP. - * @param buffer where the bytes will be stored. - * @param count How many bytes to read. - * @param address Memory address from which to read data; all the - * data must be readable by the currently selected MEM-AP. - */ -int mem_ap_read_buf_u8(struct adiv5_dap *swjdp, uint8_t *buffer, - int count, uint32_t address) -{ - uint32_t invalue; - int retval = ERROR_OK; - - if (count >= 4) - return mem_ap_read_buf_packed_u8(swjdp, buffer, count, address); - - while (count > 0) - { - dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address); - retval = dap_queue_ap_read(swjdp, AP_REG_DRW, &invalue); - retval = dap_run(swjdp); - if (retval != ERROR_OK) - break; - - *((uint8_t*)buffer) = (invalue >> 8 * (address & 0x3)); - count--; - address++; - buffer++; - } - - return retval; -} - -/*--------------------------------------------------------------------------*/ - -<<<<<<< HEAD:src/target/arm_adi_v5.c -======= -static int jtag_idcode_q_read(struct adiv5_dap *dap, - uint8_t *ack, uint32_t *data) -{ - struct arm_jtag *jtag_info = dap->jtag_info; - int retval; - struct scan_field fields[1]; - - jtag_set_end_state(TAP_IDLE); - - /* This is a standard JTAG operation -- no DAP tweakage */ - retval = arm_jtag_set_instr(jtag_info, JTAG_DP_IDCODE, NULL); - if (retval != ERROR_OK) - return retval; - - fields[0].num_bits = 32; - fields[0].out_value = NULL; - fields[0].in_value = (void *) data; - - jtag_add_dr_scan(jtag_info->tap, 1, fields, TAP_IDLE); - retval = jtag_get_error(); - if (retval != ERROR_OK) - return retval; - - jtag_add_callback(arm_le_to_h_u32, - (jtag_callback_data_t) data); - - return retval; -} - -static int jtag_dp_q_read(struct adiv5_dap *dap, unsigned reg, - uint32_t *data) -{ - return adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC, - reg, DPAP_READ, 0, data); -} - -static int jtag_dp_q_write(struct adiv5_dap *dap, unsigned reg, - uint32_t data) -{ - return adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC, - reg, DPAP_WRITE, data, NULL); -} - -/** Select the AP register bank matching bits 7:4 of reg. */ -static int jtag_ap_q_bankselect(struct adiv5_dap *dap, unsigned reg) -{ - uint32_t select = reg & 0x000000F0; - - if (select == dap->ap_bank_value) - return ERROR_OK; - dap->ap_bank_value = select; - - select |= dap->apsel; - - return jtag_dp_q_write(dap, DP_SELECT, select); -} - -static int jtag_ap_q_read(struct adiv5_dap *dap, unsigned reg, - uint32_t *data) -{ - int retval = jtag_ap_q_bankselect(dap, reg); - - if (retval != ERROR_OK) - return retval; - - return adi_jtag_scan_inout_check_u32(dap, JTAG_DP_APACC, reg, - DPAP_READ, 0, data); -} - -static int jtag_ap_q_write(struct adiv5_dap *dap, unsigned reg, - uint32_t data) -{ - uint8_t out_value_buf[4]; - - int retval = jtag_ap_q_bankselect(dap, reg); - if (retval != ERROR_OK) - return retval; ->>>>>>> jtag: cut down on usage of unintended modification of global end state:src/target/arm_adi_v5.c - -/* FIXME don't import ... just initialize as - * part of DAP transport setup -*/ -extern const struct dap_ops jtag_dp_ops; - -/*--------------------------------------------------------------------------*/ - -/** - * Initialize a DAP. This sets up the power domains, prepares the DP - * for further use, and arranges to use AP #0 for all AP operations - * until dap_ap-select() changes that policy. - * - * @param swjdp The DAP being initialized. - * - * @todo Rename this. We also need an initialization scheme which account - * for SWD transports not just JTAG; that will need to address differences - * in layering. (JTAG is useful without any debug target; but not SWD.) - * And this may not even use an AHB-AP ... e.g. DAP-Lite uses an APB-AP. - */ -int ahbap_debugport_init(struct adiv5_dap *swjdp) -{ - uint32_t idreg, romaddr, dummy; - uint32_t ctrlstat; - int cnt = 0; - int retval; - - LOG_DEBUG(" "); - - /* JTAG-DP or SWJ-DP, in JTAG mode */ - swjdp->ops = &jtag_dp_ops; - - /* Default MEM-AP setup. - * - * REVISIT AP #0 may be an inappropriate default for this. - * Should we probe, or take a hint from the caller? - * Presumably we can ignore the possibility of multiple APs. - */ - swjdp->apsel = !0; - dap_ap_select(swjdp, 0); - - /* DP initialization */ - - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy); - if (retval != ERROR_OK) - return retval; - - retval = dap_queue_dp_write(swjdp, DP_CTRL_STAT, SSTICKYERR); - if (retval != ERROR_OK) - return retval; - - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy); - if (retval != ERROR_OK) - return retval; - - swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ; - retval = dap_queue_dp_write(swjdp, DP_CTRL_STAT, swjdp->dp_ctrl_stat); - if (retval != ERROR_OK) - return retval; - - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &ctrlstat); - if (retval != ERROR_OK) - return retval; - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - - /* Check that we have debug power domains activated */ - while (!(ctrlstat & CDBGPWRUPACK) && (cnt++ < 10)) - { - LOG_DEBUG("DAP: wait CDBGPWRUPACK"); - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &ctrlstat); - if (retval != ERROR_OK) - return retval; - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - alive_sleep(10); - } - - while (!(ctrlstat & CSYSPWRUPACK) && (cnt++ < 10)) - { - LOG_DEBUG("DAP: wait CSYSPWRUPACK"); - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &ctrlstat); - if (retval != ERROR_OK) - return retval; - if ((retval = dap_run(swjdp)) != ERROR_OK) - return retval; - alive_sleep(10); - } - - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy); - if (retval != ERROR_OK) - return retval; - /* With debug power on we can activate OVERRUN checking */ - swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ | CORUNDETECT; - retval = dap_queue_dp_write(swjdp, DP_CTRL_STAT, swjdp->dp_ctrl_stat); - if (retval != ERROR_OK) - return retval; - retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy); - if (retval != ERROR_OK) - return retval; - - /* - * REVISIT this isn't actually *initializing* anything in an AP, - * and doesn't care if it's a MEM-AP at all (much less AHB-AP). - * Should it? If the ROM address is valid, is this the right - * place to scan the table and do any topology detection? - */ - retval = dap_queue_ap_read(swjdp, AP_REG_IDR, &idreg); - retval = dap_queue_ap_read(swjdp, AP_REG_BASE, &romaddr); - - LOG_DEBUG("MEM-AP #%d ID Register 0x%" PRIx32 - ", Debug ROM Address 0x%" PRIx32, - swjdp->apsel, idreg, romaddr); - - return ERROR_OK; -} - -/* CID interpretation -- see ARM IHI 0029B section 3 - * and ARM IHI 0031A table 13-3. - */ -static const char *class_description[16] ={ - "Reserved", "ROM table", "Reserved", "Reserved", - "Reserved", "Reserved", "Reserved", "Reserved", - "Reserved", "CoreSight component", "Reserved", "Peripheral Test Block", - "Reserved", "OptimoDE DESS", - "Generic IP component", "PrimeCell or System component" -}; - -static bool -is_dap_cid_ok(uint32_t cid3, uint32_t cid2, uint32_t cid1, uint32_t cid0) -{ - return cid3 == 0xb1 && cid2 == 0x05 - && ((cid1 & 0x0f) == 0) && cid0 == 0x0d; -} - -static int dap_info_command(struct command_context *cmd_ctx, - struct adiv5_dap *swjdp, int apsel) -{ - int retval; - uint32_t dbgbase, apid; - int romtable_present = 0; - uint8_t mem_ap; - uint32_t apselold; - - /* AP address is in bits 31:24 of DP_SELECT */ - if (apsel >= 256) - return ERROR_INVALID_ARGUMENTS; - - apselold = swjdp->apsel; - dap_ap_select(swjdp, apsel); - retval = dap_queue_ap_read(swjdp, AP_REG_BASE, &dbgbase); - retval = dap_queue_ap_read(swjdp, AP_REG_IDR, &apid); - retval = dap_run(swjdp); - if (retval != ERROR_OK) - return retval; - - /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */ - mem_ap = ((apid&0x10000) && ((apid&0x0F) != 0)); - command_print(cmd_ctx, "AP ID register 0x%8.8" PRIx32, apid); - if (apid) - { - switch (apid&0x0F) - { - case 0: - command_print(cmd_ctx, "\tType is JTAG-AP"); - break; - case 1: - command_print(cmd_ctx, "\tType is MEM-AP AHB"); - break; - case 2: - command_print(cmd_ctx, "\tType is MEM-AP APB"); - break; - default: - command_print(cmd_ctx, "\tUnknown AP type"); - break; - } - - /* NOTE: a MEM-AP may have a single CoreSight component that's - * not a ROM table ... or have no such components at all. - */ - if (mem_ap) - command_print(cmd_ctx, "AP BASE 0x%8.8" PRIx32, - dbgbase); - } - else - { - command_print(cmd_ctx, "No AP found at this apsel 0x%x", apsel); - } - - romtable_present = ((mem_ap) && (dbgbase != 0xFFFFFFFF)); - if (romtable_present) - { - uint32_t cid0,cid1,cid2,cid3,memtype,romentry; - uint16_t entry_offset; - - /* bit 16 of apid indicates a memory access port */ - if (dbgbase & 0x02) - command_print(cmd_ctx, "\tValid ROM table present"); - else - command_print(cmd_ctx, "\tROM table in legacy format"); - - /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */ - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFF0, &cid0); - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFF4, &cid1); - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFF8, &cid2); - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFFC, &cid3); - mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000) | 0xFCC, &memtype); - retval = dap_run(swjdp); - if (retval != ERROR_OK) - return retval; - - if (!is_dap_cid_ok(cid3, cid2, cid1, cid0)) - command_print(cmd_ctx, "\tCID3 0x%2.2" PRIx32 - ", CID2 0x%2.2" PRIx32 - ", CID1 0x%2.2" PRIx32 - ", CID0 0x%2.2" PRIx32, - cid3, cid2, cid1, cid0); - if (memtype & 0x01) - command_print(cmd_ctx, "\tMEMTYPE system memory present on bus"); - else - command_print(cmd_ctx, "\tMEMTYPE System memory not present. " - "Dedicated debug bus."); - - /* Now we read ROM table entries from dbgbase&0xFFFFF000) | 0x000 until we get 0x00000000 */ - entry_offset = 0; - do - { - mem_ap_read_atomic_u32(swjdp, (dbgbase&0xFFFFF000) | entry_offset, &romentry); - command_print(cmd_ctx, "\tROMTABLE[0x%x] = 0x%" PRIx32 "",entry_offset,romentry); - if (romentry&0x01) - { - uint32_t c_cid0, c_cid1, c_cid2, c_cid3; - uint32_t c_pid0, c_pid1, c_pid2, c_pid3, c_pid4; - uint32_t component_start, component_base; - unsigned part_num; - char *type, *full; - - component_base = (uint32_t)((dbgbase & 0xFFFFF000) - + (int)(romentry & 0xFFFFF000)); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFE0, &c_pid0); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFE4, &c_pid1); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFE8, &c_pid2); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFEC, &c_pid3); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFD0, &c_pid4); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFF0, &c_cid0); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFF4, &c_cid1); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFF8, &c_cid2); - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xFFFFF000) | 0xFFC, &c_cid3); - component_start = component_base - 0x1000*(c_pid4 >> 4); - - command_print(cmd_ctx, "\t\tComponent base address 0x%" PRIx32 - ", start address 0x%" PRIx32, - component_base, component_start); - command_print(cmd_ctx, "\t\tComponent class is 0x%x, %s", - (int) (c_cid1 >> 4) & 0xf, - /* See ARM IHI 0029B Table 3-3 */ - class_description[(c_cid1 >> 4) & 0xf]); - - /* CoreSight component? */ - if (((c_cid1 >> 4) & 0x0f) == 9) { - uint32_t devtype; - unsigned minor; - char *major = "Reserved", *subtype = "Reserved"; - - mem_ap_read_atomic_u32(swjdp, - (component_base & 0xfffff000) | 0xfcc, - &devtype); - minor = (devtype >> 4) & 0x0f; - switch (devtype & 0x0f) { - case 0: - major = "Miscellaneous"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 4: - subtype = "Validation component"; - break; - } - break; - case 1: - major = "Trace Sink"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Port"; - break; - case 2: - subtype = "Buffer"; - break; - } - break; - case 2: - major = "Trace Link"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Funnel, router"; - break; - case 2: - subtype = "Filter"; - break; - case 3: - subtype = "FIFO, buffer"; - break; - } - break; - case 3: - major = "Trace Source"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Processor"; - break; - case 2: - subtype = "DSP"; - break; - case 3: - subtype = "Engine/Coprocessor"; - break; - case 4: - subtype = "Bus"; - break; - } - break; - case 4: - major = "Debug Control"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Trigger Matrix"; - break; - case 2: - subtype = "Debug Auth"; - break; - } - break; - case 5: - major = "Debug Logic"; - switch (minor) { - case 0: - subtype = "other"; - break; - case 1: - subtype = "Processor"; - break; - case 2: - subtype = "DSP"; - break; - case 3: - subtype = "Engine/Coprocessor"; - break; - } - break; - } - command_print(cmd_ctx, "\t\tType is 0x%2.2x, %s, %s", - (unsigned) (devtype & 0xff), - major, subtype); - /* REVISIT also show 0xfc8 DevId */ - } - - if (!is_dap_cid_ok(cid3, cid2, cid1, cid0)) - command_print(cmd_ctx, "\t\tCID3 0x%2.2" PRIx32 - ", CID2 0x%2.2" PRIx32 - ", CID1 0x%2.2" PRIx32 - ", CID0 0x%2.2" PRIx32, - c_cid3, c_cid2, c_cid1, c_cid0); - command_print(cmd_ctx, "\t\tPeripheral ID[4..0] = hex " - "%2.2x %2.2x %2.2x %2.2x %2.2x", - (int) c_pid4, - (int) c_pid3, (int) c_pid2, - (int) c_pid1, (int) c_pid0); - - /* Part number interpretations are from Cortex - * core specs, the CoreSight components TRM - * (ARM DDI 0314H), and ETM specs; also from - * chip observation (e.g. TI SDTI). - */ - part_num = c_pid0 & 0xff; - part_num |= (c_pid1 & 0x0f) << 8; - switch (part_num) { - case 0x000: - type = "Cortex-M3 NVIC"; - full = "(Interrupt Controller)"; - break; - case 0x001: - type = "Cortex-M3 ITM"; - full = "(Instrumentation Trace Module)"; - break; - case 0x002: - type = "Cortex-M3 DWT"; - full = "(Data Watchpoint and Trace)"; - break; - case 0x003: - type = "Cortex-M3 FBP"; - full = "(Flash Patch and Breakpoint)"; - break; - case 0x00d: - type = "CoreSight ETM11"; - full = "(Embedded Trace)"; - break; - // case 0x113: what? - case 0x120: /* from OMAP3 memmap */ - type = "TI SDTI"; - full = "(System Debug Trace Interface)"; - break; - case 0x343: /* from OMAP3 memmap */ - type = "TI DAPCTL"; - full = ""; - break; - case 0x906: - type = "Coresight CTI"; - full = "(Cross Trigger)"; - break; - case 0x907: - type = "Coresight ETB"; - full = "(Trace Buffer)"; - break; - case 0x908: - type = "Coresight CSTF"; - full = "(Trace Funnel)"; - break; - case 0x910: - type = "CoreSight ETM9"; - full = "(Embedded Trace)"; - break; - case 0x912: - type = "Coresight TPIU"; - full = "(Trace Port Interface Unit)"; - break; - case 0x921: - type = "Cortex-A8 ETM"; - full = "(Embedded Trace)"; - break; - case 0x922: - type = "Cortex-A8 CTI"; - full = "(Cross Trigger)"; - break; - case 0x923: - type = "Cortex-M3 TPIU"; - full = "(Trace Port Interface Unit)"; - break; - case 0x924: - type = "Cortex-M3 ETM"; - full = "(Embedded Trace)"; - break; - case 0xc08: - type = "Cortex-A8 Debug"; - full = "(Debug Unit)"; - break; - default: - type = "-*- unrecognized -*-"; - full = ""; - break; - } - command_print(cmd_ctx, "\t\tPart is %s %s", - type, full); - } - else - { - if (romentry) - command_print(cmd_ctx, "\t\tComponent not present"); - else - command_print(cmd_ctx, "\t\tEnd of ROM table"); - } - entry_offset += 4; - } while (romentry > 0); - } - else - { - command_print(cmd_ctx, "\tNo ROM table present"); - } - dap_ap_select(swjdp, apselold); - - return ERROR_OK; -} - -COMMAND_HANDLER(handle_dap_info_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - uint32_t apsel; - - switch (CMD_ARGC) { - case 0: - apsel = dap->apsel; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel); - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - - return dap_info_command(CMD_CTX, dap, apsel); -} - -COMMAND_HANDLER(dap_baseaddr_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - - uint32_t apsel, apselsave, baseaddr; - int retval; - - apselsave = dap->apsel; - switch (CMD_ARGC) { - case 0: - apsel = dap->apsel; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel); - /* AP address is in bits 31:24 of DP_SELECT */ - if (apsel >= 256) - return ERROR_INVALID_ARGUMENTS; - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - - if (apselsave != apsel) - dap_ap_select(dap, apsel); - - /* NOTE: assumes we're talking to a MEM-AP, which - * has a base address. There are other kinds of AP, - * though they're not common for now. This should - * use the ID register to verify it's a MEM-AP. - */ - retval = dap_queue_ap_read(dap, AP_REG_BASE, &baseaddr); - retval = dap_run(dap); - if (retval != ERROR_OK) - return retval; - - command_print(CMD_CTX, "0x%8.8" PRIx32, baseaddr); - - if (apselsave != apsel) - dap_ap_select(dap, apselsave); - - return retval; -} - -COMMAND_HANDLER(dap_memaccess_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - - uint32_t memaccess_tck; - - switch (CMD_ARGC) { - case 0: - memaccess_tck = dap->memaccess_tck; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], memaccess_tck); - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - dap->memaccess_tck = memaccess_tck; - - command_print(CMD_CTX, "memory bus access delay set to %" PRIi32 " tck", - dap->memaccess_tck); - - return ERROR_OK; -} - -COMMAND_HANDLER(dap_apsel_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - - uint32_t apsel, apid; - int retval; - - switch (CMD_ARGC) { - case 0: - apsel = 0; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel); - /* AP address is in bits 31:24 of DP_SELECT */ - if (apsel >= 256) - return ERROR_INVALID_ARGUMENTS; - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - - dap_ap_select(dap, apsel); - retval = dap_queue_ap_read(dap, AP_REG_IDR, &apid); - retval = dap_run(dap); - if (retval != ERROR_OK) - return retval; - - command_print(CMD_CTX, "ap %" PRIi32 " selected, identification register 0x%8.8" PRIx32, - apsel, apid); - - return retval; -} - -COMMAND_HANDLER(dap_apid_command) -{ - struct target *target = get_current_target(CMD_CTX); - struct arm *arm = target_to_arm(target); - struct adiv5_dap *dap = arm->dap; - - uint32_t apsel, apselsave, apid; - int retval; - - apselsave = dap->apsel; - switch (CMD_ARGC) { - case 0: - apsel = dap->apsel; - break; - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel); - /* AP address is in bits 31:24 of DP_SELECT */ - if (apsel >= 256) - return ERROR_INVALID_ARGUMENTS; - break; - default: - return ERROR_COMMAND_SYNTAX_ERROR; - } - - if (apselsave != apsel) - dap_ap_select(dap, apsel); - - retval = dap_queue_ap_read(dap, AP_REG_IDR, &apid); - retval = dap_run(dap); - if (retval != ERROR_OK) - return retval; - - command_print(CMD_CTX, "0x%8.8" PRIx32, apid); - if (apselsave != apsel) - dap_ap_select(dap, apselsave); - - return retval; -} - -static const struct command_registration dap_commands[] = { - { - .name = "info", - .handler = handle_dap_info_command, - .mode = COMMAND_EXEC, - .help = "display ROM table for MEM-AP " - "(default currently selected AP)", - .usage = "[ap_num]", - }, - { - .name = "apsel", - .handler = dap_apsel_command, - .mode = COMMAND_EXEC, - .help = "Set the currently selected AP (default 0) " - "and display the result", - .usage = "[ap_num]", - }, - { - .name = "apid", - .handler = dap_apid_command, - .mode = COMMAND_EXEC, - .help = "return ID register from AP " - "(default currently selected AP)", - .usage = "[ap_num]", - }, - { - .name = "baseaddr", - .handler = dap_baseaddr_command, - .mode = COMMAND_EXEC, - .help = "return debug base address from MEM-AP " - "(default currently selected AP)", - .usage = "[ap_num]", - }, - { - .name = "memaccess", - .handler = dap_memaccess_command, - .mode = COMMAND_EXEC, - .help = "set/get number of extra tck for MEM-AP memory " - "bus access [0-255]", - .usage = "[cycles]", - }, - COMMAND_REGISTRATION_DONE -}; - -const struct command_registration dap_command_handlers[] = { - { - .name = "dap", - .mode = COMMAND_EXEC, - .help = "DAP command group", - .chain = dap_commands, - }, - COMMAND_REGISTRATION_DONE -}; - - -/* - * This represents the bits which must be sent out on TMS/SWDIO to - * switch a DAP implemented using an SWJ-DP module into SWD mode. - * These bits are stored (and transmitted) LSB-first. - * - * See the DAP-Lite specification, section 2.2.5 for information - * about making the debug link select SWD or JTAG. (Similar info - * is in a few other ARM documents.) - */ -static const uint8_t jtag2swd_bitseq[] = { - /* More than 50 TCK/SWCLK cycles with TMS/SWDIO high, - * putting both JTAG and SWD logic into reset state. - */ - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - /* Switching sequence enables SWD and disables JTAG - * NOTE: bits in the DP's IDCODE may expose the need for - * an old/deprecated sequence (0xb6 0xed). - */ - 0x9e, 0xe7, - /* More than 50 TCK/SWCLK cycles with TMS/SWDIO high, - * putting both JTAG and SWD logic into reset state. - */ - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, -}; - -/** - * Put the debug link into SWD mode, if the target supports it. - * The link's initial mode may be either JTAG (for example, - * with SWJ-DP after reset) or SWD. - * - * @param target Enters SWD mode (if possible). - * - * Note that targets using the JTAG-DP do not support SWD, and that - * some targets which could otherwise support it may have have been - * configured to disable SWD signaling - * - * @return ERROR_OK or else a fault code. - */ -int dap_to_swd(struct target *target) -{ - int retval; - - LOG_DEBUG("Enter SWD mode"); - - /* REVISIT it's nasty to need to make calls to a "jtag" - * subsystem if the link isn't in JTAG mode... - */ - - retval = jtag_add_tms_seq(8 * sizeof(jtag2swd_bitseq), - jtag2swd_bitseq, TAP_INVALID); - if (retval == ERROR_OK) - retval = jtag_execute_queue(); - - /* REVISIT set up the DAP's ops vector for SWD mode. */ - - return retval; -} - |