From e127fb3a5ac69fcb5ea9f507b9c27550ce7c9308 Mon Sep 17 00:00:00 2001 From: oharboe Date: Thu, 25 Sep 2008 14:31:10 +0000 Subject: ZY1000 code git-svn-id: svn://svn.berlios.de/openocd/trunk@1005 b42882b7-edfa-0310-969c-e2dbd0fdcd60 --- src/jtag/zy1000.c | 739 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 739 insertions(+) create mode 100644 src/jtag/zy1000.c (limited to 'src/jtag/zy1000.c') diff --git a/src/jtag/zy1000.c b/src/jtag/zy1000.c new file mode 100644 index 00000000..8c10a9ff --- /dev/null +++ b/src/jtag/zy1000.c @@ -0,0 +1,739 @@ +/*************************************************************************** + * Copyright (C) 2007-2008 by Øyvind Harboe * + * * + * 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. * + ***************************************************************************/ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + + +#include "log.h" +#include "jtag.h" +#include "bitbang.h" +#include "../target/embeddedice.h" + + +#include // low level i/o +#include // common registers +#include // platform registers +#include + +#include + + +extern int jtag_error; + +/* low level command set + */ +int eCosBoard_read(void); +static void eCosBoard_write(int tck, int tms, int tdi); +void eCosBoard_reset(int trst, int srst); + + +int eCosBoard_speed(int speed); +int eCosBoard_register_commands(struct command_context_s *cmd_ctx); +int eCosBoard_init(void); +int eCosBoard_quit(void); + +/* interface commands */ +int eCosBoard_handle_eCosBoard_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); + +static int eCosBoard_khz(int khz, int *jtag_speed) +{ + if (khz==0) + { + *jtag_speed=0; + } + else + { + *jtag_speed=64000/khz; + } + return ERROR_OK; +} + +static int eCosBoard_speed_div(int speed, int *khz) +{ + if (speed==0) + { + *khz = 0; + } + else + { + *khz=64000/speed; + } + + return ERROR_OK; +} + + +jtag_interface_t eCosBoard_interface = +{ + .name = "ZY1000", + .execute_queue = bitbang_execute_queue, + .speed = eCosBoard_speed, + .register_commands = eCosBoard_register_commands, + .init = eCosBoard_init, + .quit = eCosBoard_quit, + .khz = eCosBoard_khz, + .speed_div = eCosBoard_speed_div, +}; + +bitbang_interface_t eCosBoard_bitbang = +{ + .read = eCosBoard_read, + .write = eCosBoard_write, + .reset = eCosBoard_reset +}; + + + +static void eCosBoard_write(int tck, int tms, int tdi) +{ + +} + +int eCosBoard_read(void) +{ + return -1; +} + +extern bool readSRST(); + +void eCosBoard_reset(int trst, int srst) +{ + LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst); + if(!srst) + { + ZY1000_POKE(0x08000014, 0x00000001); + } + else + { + /* Danger!!! if clk!=0 when in + * idle in TAP_RTI, reset halt on str912 will fail. + */ + ZY1000_POKE(0x08000010, 0x00000001); + } + + if(!trst) + { + ZY1000_POKE(0x08000014, 0x00000002); + } + else + { + /* assert reset */ + ZY1000_POKE(0x08000010, 0x00000002); + } + + if (trst||(srst&&(jtag_reset_config & RESET_SRST_PULLS_TRST))) + { + waitIdle(); + /* we're now in the TLR state until trst is deasserted */ + ZY1000_POKE(0x08000020, TAP_TLR); + } else + { + /* We'll get RCLK failure when we assert TRST, so clear any false positives here */ + ZY1000_POKE(0x08000014, 0x400); + } + + /* wait for srst to float back up */ + if (!srst) + { + int i; + for (i=0; i<1000; i++) + { + // We don't want to sense our own reset, so we clear here. + // There is of course a timing hole where we could loose + // a "real" reset. + if (!readSRST()) + break; + + /* wait 1ms */ + alive_sleep(1); + } + + if (i==1000) + { + LOG_USER("SRST didn't deassert after %dms", i); + } else if (i>1) + { + LOG_USER("SRST took %dms to deassert", i); + } + } +} + +int eCosBoard_speed(int speed) +{ + if(speed == 0) + { + /*0 means RCLK*/ + speed = 0; + ZY1000_POKE(0x08000010, 0x100); + LOG_DEBUG("jtag_speed using RCLK"); + } + else + { + if(speed > 8190 || speed < 2) + { + LOG_ERROR("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz"); + return ERROR_INVALID_ARGUMENTS; + } + + LOG_USER("jtag_speed %d => JTAG clk=%f", speed, 64.0/(float)speed); + ZY1000_POKE(0x08000014, 0x100); + ZY1000_POKE(0x0800001c, speed&~1); + } + return ERROR_OK; +} + +int eCosBoard_register_commands(struct command_context_s *cmd_ctx) +{ + return ERROR_OK; +} + + +int eCosBoard_init(void) +{ + ZY1000_POKE(0x08000010, 0x30); // Turn on LED1 & LED2 + + /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */ + eCosBoard_reset(0, 0); + eCosBoard_speed(jtag_speed); + + bitbang_interface = &eCosBoard_bitbang; + + return ERROR_OK; +} + +int eCosBoard_quit(void) +{ + + return ERROR_OK; +} + + + +/* loads a file and returns a pointer to it in memory. The file contains + * a 0 byte(sentinel) after len bytes - the length of the file. */ +int loadFile(const char *fileName, void **data, int *len) +{ + FILE * pFile; + pFile = fopen (fileName,"rb"); + if (pFile==NULL) + { + LOG_ERROR("Can't open %s\n", fileName); + return ERROR_JTAG_DEVICE_ERROR; + } + if (fseek (pFile, 0, SEEK_END)!=0) + { + LOG_ERROR("Can't open %s\n", fileName); + fclose(pFile); + return ERROR_JTAG_DEVICE_ERROR; + } + *len=ftell (pFile); + if (*len==-1) + { + LOG_ERROR("Can't open %s\n", fileName); + fclose(pFile); + return ERROR_JTAG_DEVICE_ERROR; + } + + if (fseek (pFile, 0, SEEK_SET)!=0) + { + LOG_ERROR("Can't open %s\n", fileName); + fclose(pFile); + return ERROR_JTAG_DEVICE_ERROR; + } + *data=malloc(*len+1); + if (*data==NULL) + { + LOG_ERROR("Can't open %s\n", fileName); + fclose(pFile); + return ERROR_JTAG_DEVICE_ERROR; + } + + if (fread(*data, 1, *len, pFile)!=*len) + { + fclose(pFile); + free(*data); + LOG_ERROR("Can't open %s\n", fileName); + return ERROR_JTAG_DEVICE_ERROR; + } + fclose (pFile); + *(((char *)(*data))+*len)=0; /* sentinel */ + + return ERROR_OK; + + + +} + + + + +int interface_jtag_execute_queue(void) +{ + cyg_uint32 empty; + + waitIdle(); + ZY1000_PEEK(0x08000010, empty); + /* clear JTAG error register */ + ZY1000_POKE(0x08000014, 0x400); + + if ((empty&0x400)!=0) + { + LOG_WARNING("RCLK timeout"); + /* the error is informative only as we don't want to break the firmware if there + * is a false positive. + */ +// return ERROR_FAIL; + } + return ERROR_OK; +} + + + + + +static cyg_uint32 getShiftValue() +{ + cyg_uint32 value; + waitIdle(); + ZY1000_PEEK(0x0800000c, value); + VERBOSE(LOG_INFO("getShiftValue %08x", value)); + return value; +} +#if 0 +static cyg_uint32 getShiftValueFlip() +{ + cyg_uint32 value; + waitIdle(); + ZY1000_PEEK(0x08000018, value); + VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value)); + return value; +} +#endif + +#if 0 +static void shiftValueInnerFlip(const enum tap_state state, const enum tap_state endState, int repeat, cyg_uint32 value) +{ + VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_strings[state], tap_state_strings[endState], repeat, value)); + cyg_uint32 a,b; + a=state; + b=endState; + ZY1000_POKE(0x0800000c, value); + ZY1000_POKE(0x08000008, (1<<15)|(repeat<<8)|(a<<4)|b); + VERBOSE(getShiftValueFlip()); +} +#endif + +extern int jtag_check_value(u8 *captured, void *priv); + +static void gotoEndState() +{ + setCurrentState(cmd_queue_end_state); +} + +static __inline void scanFields(int num_fields, scan_field_t *fields, enum tap_state shiftState, int pause) +{ + int i; + int j; + int k; + + for (i = 0; i < num_fields; i++) + { + cyg_uint32 value; + + static u8 *in_buff=NULL; /* pointer to buffer for scanned data */ + static int in_buff_size=0; + u8 *inBuffer=NULL; + + + // figure out where to store the input data + int num_bits=fields[i].num_bits; + if (fields[i].in_value!=NULL) + { + inBuffer=fields[i].in_value; + } else if (fields[i].in_handler!=NULL) + { + if (in_buff_size*832) + { + k=32; + /* we have more to shift out */ + } else if (pause&&(i == num_fields-1)) + { + /* this was the last to shift out this time */ + pause_state=(shiftState==TAP_SD)?TAP_PD:TAP_PI; + } + + // we have (num_bits+7)/8 bytes of bits to toggle out. + // bits are pushed out LSB to MSB + value=0; + if (fields[i].out_value!=NULL) + { + for (l=0; l>= 32-k; + + for (l=0; l>l)&0xff; + } + } + j+=k; + } + + if (fields[i].in_handler!=NULL) + { + // invoke callback + int r=fields[i].in_handler(inBuffer, fields[i].in_handler_priv, fields+i); + if (r!=ERROR_OK) + { + /* this will cause jtag_execute_queue() to return an error */ + jtag_error=r; + } + } + } +} + +int interface_jtag_add_end_state(enum tap_state state) +{ + return ERROR_OK; +} + + +int interface_jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) +{ + + int i, j; + int scan_size = 0; + jtag_device_t *device; + + for (i=0; i < jtag_num_devices; i++) + { + int pause=i==(jtag_num_devices-1); + int found = 0; + device = jtag_get_device(i); + scan_size = device->ir_length; + + /* search the list */ + for (j=0; j < num_fields; j++) + { + if (i == fields[j].device) + { + found = 1; + + if ((jtag_verify_capture_ir)&&(fields[j].in_handler==NULL)) + { + jtag_set_check_value(fields+j, device->expected, device->expected_mask, NULL); + } else if (jtag_verify_capture_ir) + { + fields[j].in_check_value = device->expected; + fields[j].in_check_mask = device->expected_mask; + } + + scanFields(1, fields+j, TAP_SI, pause); + /* update device information */ + buf_cpy(fields[j].out_value, jtag_get_device(i)->cur_instr, scan_size); + + device->bypass = 0; + break; + } + } + + if (!found) + { + /* if a device isn't listed, set it to BYPASS */ + u8 ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff}; + + scan_field_t tmp; + memset(&tmp, 0, sizeof(tmp)); + tmp.out_value = ones; + tmp.num_bits = scan_size; + scanFields(1, &tmp, TAP_SI, pause); + /* update device information */ + buf_cpy(tmp.out_value, jtag_get_device(i)->cur_instr, scan_size); + device->bypass = 1; + } + } + gotoEndState(); + + return ERROR_OK; +} + + + + + +int interface_jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) +{ + scanFields(num_fields, fields, TAP_SI, 1); + gotoEndState(); + + return ERROR_OK; +} + +/*extern jtag_command_t **jtag_get_last_command_p(void);*/ + +int interface_jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) +{ + int i, j; + for (i=0; i < jtag_num_devices; i++) + { + int found = 0; + int pause = (i==(jtag_num_devices-1)); + + for (j=0; j < num_fields; j++) + { + if (i == fields[j].device) + { + found = 1; + + scanFields(1, fields+j, TAP_SD, pause); + } + } + if (!found) + { +#ifdef _DEBUG_JTAG_IO_ + /* if a device isn't listed, the BYPASS register should be selected */ + if (!jtag_get_device(i)->bypass) + { + LOG_ERROR("BUG: no scan data for a device not in BYPASS"); + exit(-1); + } +#endif + + scan_field_t tmp; + /* program the scan field to 1 bit length, and ignore it's value */ + tmp.num_bits = 1; + tmp.out_value = NULL; + tmp.out_mask = NULL; + tmp.in_value = NULL; + tmp.in_check_value = NULL; + tmp.in_check_mask = NULL; + tmp.in_handler = NULL; + tmp.in_handler_priv = NULL; + + scanFields(1, &tmp, TAP_SD, pause); + } + else + { +#ifdef _DEBUG_JTAG_IO_ + /* if a device is listed, the BYPASS register must not be selected */ + if (jtag_get_device(i)->bypass) + { + LOG_WARNING("scan data for a device in BYPASS"); + } +#endif + } + } + gotoEndState(); + return ERROR_OK; +} + +int interface_jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) +{ + scanFields(num_fields, fields, TAP_SD, 1); + gotoEndState(); + return ERROR_OK; +} + + +int interface_jtag_add_tlr() +{ + setCurrentState(TAP_TLR); + return ERROR_OK; +} + + + + +extern int jtag_nsrst_delay; +extern int jtag_ntrst_delay; + +int interface_jtag_add_reset(int req_trst, int req_srst) +{ + eCosBoard_reset(req_trst, req_srst); + return ERROR_OK; +} + +int interface_jtag_add_runtest(int num_cycles, enum tap_state state) +{ + /* num_cycles can be 0 */ + setCurrentState(TAP_RTI); + + /* execute num_cycles, 32 at the time. */ + int i; + for (i=0; i> i) & 1; + waitIdle(); + ZY1000_POKE(0x08000028, tms); + } + waitIdle(); + ZY1000_POKE(0x08000020, state); +#endif + + + return ERROR_OK; +} + +int interface_jtag_add_sleep(u32 us) +{ + jtag_sleep(us); + return ERROR_OK; +} + +int interface_jtag_add_pathmove(int num_states, enum tap_state *path) +{ + int state_count; + int tms = 0; + + /*wait for the fifo to be empty*/ + waitIdle(); + + state_count = 0; + + enum tap_state cur_state=cmd_queue_cur_state; + + while (num_states) + { + if (tap_transitions[cur_state].low == path[state_count]) + { + tms = 0; + } + else if (tap_transitions[cur_state].high == path[state_count]) + { + tms = 1; + } + else + { + LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[state_count]]); + exit(-1); + } + + waitIdle(); + ZY1000_POKE(0x08000028, tms); + + cur_state = path[state_count]; + state_count++; + num_states--; + } + + waitIdle(); + ZY1000_POKE(0x08000020, cur_state); + return ERROR_OK; +} + + + +void embeddedice_write_dcc(int chain_pos, int reg_addr, u8 *buffer, int little, int count) +{ +// static int const reg_addr=0x5; + enum tap_state end_state=cmd_queue_end_state; + if (jtag_num_devices==1) + { + /* better performance via code duplication */ + if (little) + { + int i; + for (i = 0; i < count; i++) + { + shiftValueInner(TAP_SD, TAP_SD, 32, fast_target_buffer_get_u32(buffer, 1)); + shiftValueInner(TAP_SD, end_state, 6, reg_addr|(1<<5)); + buffer+=4; + } + } else + { + int i; + for (i = 0; i < count; i++) + { + shiftValueInner(TAP_SD, TAP_SD, 32, fast_target_buffer_get_u32(buffer, 0)); + shiftValueInner(TAP_SD, end_state, 6, reg_addr|(1<<5)); + buffer+=4; + } + } + } + else + { + int i; + for (i = 0; i < count; i++) + { + embeddedice_write_reg_inner(chain_pos, reg_addr, fast_target_buffer_get_u32(buffer, little)); + buffer += 4; + } + } +} + -- cgit v1.2.3