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-rw-r--r--src/flash/nor/aduc702x.c425
1 files changed, 425 insertions, 0 deletions
diff --git a/src/flash/nor/aduc702x.c b/src/flash/nor/aduc702x.c
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+++ b/src/flash/nor/aduc702x.c
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+/***************************************************************************
+ * Copyright (C) 2008 by Kevin McGuire *
+ * Copyright (C) 2008 by Marcel Wijlaars *
+ * Copyright (C) 2009 by Michael Ashton *
+ * *
+ * 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 "flash.h"
+#include "armv4_5.h"
+#include "binarybuffer.h"
+#include "time_support.h"
+#include "algorithm.h"
+
+
+static int aduc702x_build_sector_list(struct flash_bank *bank);
+static int aduc702x_check_flash_completion(struct target* target, unsigned int timeout_ms);
+static int aduc702x_set_write_enable(struct target *target, int enable);
+
+#define ADUC702x_FLASH 0xfffff800
+#define ADUC702x_FLASH_FEESTA (0*4)
+#define ADUC702x_FLASH_FEEMOD (1*4)
+#define ADUC702x_FLASH_FEECON (2*4)
+#define ADUC702x_FLASH_FEEDAT (3*4)
+#define ADUC702x_FLASH_FEEADR (4*4)
+#define ADUC702x_FLASH_FEESIGN (5*4)
+#define ADUC702x_FLASH_FEEPRO (6*4)
+#define ADUC702x_FLASH_FEEHIDE (7*4)
+
+struct aduc702x_flash_bank {
+ struct working_area *write_algorithm;
+};
+
+/* flash bank aduc702x 0 0 0 0 <target#>
+ * The ADC7019-28 devices all have the same flash layout */
+FLASH_BANK_COMMAND_HANDLER(aduc702x_flash_bank_command)
+{
+ struct aduc702x_flash_bank *nbank;
+
+ nbank = malloc(sizeof(struct aduc702x_flash_bank));
+
+ bank->base = 0x80000;
+ bank->size = 0xF800; // top 4k not accessible
+ bank->driver_priv = nbank;
+
+ aduc702x_build_sector_list(bank);
+
+ return ERROR_OK;
+}
+
+static int aduc702x_build_sector_list(struct flash_bank *bank)
+{
+ //aduc7026_struct flash_bank *aduc7026_info = bank->driver_priv;
+
+ int i = 0;
+ uint32_t offset = 0;
+
+ // sector size is 512
+ bank->num_sectors = bank->size / 512;
+ bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
+ for (i = 0; i < bank->num_sectors; ++i)
+ {
+ bank->sectors[i].offset = offset;
+ bank->sectors[i].size = 512;
+ offset += bank->sectors[i].size;
+ bank->sectors[i].is_erased = -1;
+ bank->sectors[i].is_protected = 0;
+ }
+
+ return ERROR_OK;
+}
+
+static int aduc702x_protect_check(struct flash_bank *bank)
+{
+ printf("aduc702x_protect_check not implemented yet.\n");
+ return ERROR_OK;
+}
+
+static int aduc702x_erase(struct flash_bank *bank, int first, int last)
+{
+ //int res;
+ int x;
+ int count;
+ //uint32_t v;
+ struct target *target = bank->target;
+
+ aduc702x_set_write_enable(target, 1);
+
+ /* mass erase */
+ if (((first | last) == 0) || ((first == 0) && (last >= bank->num_sectors))) {
+ LOG_DEBUG("performing mass erase.\n");
+ target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEDAT, 0x3cff);
+ target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEADR, 0xffc3);
+ target_write_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEECON, 0x06);
+
+ if (aduc702x_check_flash_completion(target, 3500) != ERROR_OK)
+ {
+ LOG_ERROR("mass erase failed\n");
+ aduc702x_set_write_enable(target, 0);
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ LOG_DEBUG("mass erase successful.\n");
+ return ERROR_OK;
+ } else {
+ unsigned long adr;
+
+ count = last - first + 1;
+ for (x = 0; x < count; ++x)
+ {
+ adr = bank->base + ((first + x) * 512);
+
+ target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEADR, adr);
+ target_write_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEECON, 0x05);
+
+ if (aduc702x_check_flash_completion(target, 50) != ERROR_OK)
+ {
+ LOG_ERROR("failed to erase sector at address 0x%08lX\n", adr);
+ aduc702x_set_write_enable(target, 0);
+ return ERROR_FLASH_SECTOR_NOT_ERASED;
+ }
+
+ LOG_DEBUG("erased sector at address 0x%08lX\n", adr);
+ }
+ }
+
+ aduc702x_set_write_enable(target, 0);
+
+ return ERROR_OK;
+}
+
+static int aduc702x_protect(struct flash_bank *bank, int set, int first, int last)
+{
+ printf("aduc702x_protect not implemented yet.\n");
+ return ERROR_FLASH_OPERATION_FAILED;
+}
+
+/* If this fn returns ERROR_TARGET_RESOURCE_NOT_AVAILABLE, then the caller can fall
+ * back to another mechanism that does not require onboard RAM
+ *
+ * Caller should not check for other return values specifically
+ */
+static int aduc702x_write_block(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ struct aduc702x_flash_bank *aduc702x_info = bank->driver_priv;
+ struct target *target = bank->target;
+ uint32_t buffer_size = 7000;
+ struct working_area *source;
+ uint32_t address = bank->base + offset;
+ struct reg_param reg_params[6];
+ struct armv4_5_algorithm armv4_5_info;
+ int retval = ERROR_OK;
+
+ if (((count%2)!=0)||((offset%2)!=0))
+ {
+ LOG_ERROR("write block must be multiple of two bytes in offset & length");
+ return ERROR_FAIL;
+ }
+
+ /* parameters:
+
+ r0 - address of source data (absolute)
+ r1 - number of halfwords to be copied
+ r2 - start address in flash (offset from beginning of flash memory)
+ r3 - exit code
+ r4 - base address of flash controller (0xFFFFF800)
+
+ registers:
+
+ r5 - scratch
+ r6 - set to 2, used to write flash command
+
+ */
+ uint32_t aduc702x_flash_write_code[] = {
+ //<_start>:
+ 0xe3a05008, // mov r5, #8 ; 0x8
+ 0xe5845004, // str r5, [r4, #4]
+ 0xe3a06002, // mov r6, #2 ; 0x2
+ //<next>:
+ 0xe1c421b0, // strh r2, [r4, #16]
+ 0xe0d050b2, // ldrh r5, [r0], #2
+ 0xe1c450bc, // strh r5, [r4, #12]
+ 0xe5c46008, // strb r6, [r4, #8]
+ //<wait_complete>:
+ 0xe1d430b0, // ldrh r3, [r4]
+ 0xe3130004, // tst r3, #4 ; 0x4
+ 0x1afffffc, // bne 1001c <wait_complete>
+ 0xe2822002, // add r2, r2, #2 ; 0x2
+ 0xe2511001, // subs r1, r1, #1 ; 0x1
+ 0x0a000001, // beq 1003c <done>
+ 0xe3130001, // tst r3, #1 ; 0x1
+ 0x1afffff3, // bne 1000c <next>
+ //<done>:
+ 0xeafffffe // b 1003c <done>
+ };
+
+ /* flash write code */
+ if (target_alloc_working_area(target, sizeof(aduc702x_flash_write_code),
+ &aduc702x_info->write_algorithm) != ERROR_OK)
+ {
+ LOG_WARNING("no working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ };
+
+ retval=target_write_buffer(target, aduc702x_info->write_algorithm->address,
+ sizeof(aduc702x_flash_write_code), (uint8_t*)aduc702x_flash_write_code);
+ if (retval!=ERROR_OK)
+ {
+ return retval;
+ }
+
+ /* memory buffer */
+ while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
+ {
+ buffer_size /= 2;
+ if (buffer_size <= 256)
+ {
+ /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
+ if (aduc702x_info->write_algorithm)
+ target_free_working_area(target, aduc702x_info->write_algorithm);
+
+ LOG_WARNING("no large enough working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
+ }
+
+ armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
+ armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
+ armv4_5_info.core_state = ARMV4_5_STATE_ARM;
+
+ init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
+ init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
+ init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
+ init_reg_param(&reg_params[3], "r3", 32, PARAM_IN);
+ init_reg_param(&reg_params[4], "r4", 32, PARAM_OUT);
+
+ while (count > 0)
+ {
+ uint32_t thisrun_count = (count > buffer_size) ? buffer_size : count;
+
+ retval=target_write_buffer(target, source->address, thisrun_count, buffer);
+ if (retval!=ERROR_OK)
+ {
+ break;
+ }
+
+ buf_set_u32(reg_params[0].value, 0, 32, source->address);
+ buf_set_u32(reg_params[1].value, 0, 32, thisrun_count/2);
+ buf_set_u32(reg_params[2].value, 0, 32, address);
+ buf_set_u32(reg_params[4].value, 0, 32, 0xFFFFF800);
+
+ if ((retval = target_run_algorithm(target, 0, NULL, 5,
+ reg_params, aduc702x_info->write_algorithm->address,
+ aduc702x_info->write_algorithm->address + sizeof(aduc702x_flash_write_code) - 4,
+ 10000, &armv4_5_info)) != ERROR_OK)
+ {
+ LOG_ERROR("error executing aduc702x flash write algorithm");
+ break;
+ }
+
+ if ((buf_get_u32(reg_params[3].value, 0, 32) & 1) != 1)
+ {
+ /* FIX!!!! what does this mean??? replace w/sensible error message */
+ LOG_ERROR("aduc702x detected error writing flash");
+ retval = ERROR_FAIL;
+ break;
+ }
+
+ buffer += thisrun_count;
+ address += thisrun_count;
+ count -= thisrun_count;
+ }
+
+ target_free_working_area(target, source);
+ target_free_working_area(target, aduc702x_info->write_algorithm);
+
+ destroy_reg_param(&reg_params[0]);
+ destroy_reg_param(&reg_params[1]);
+ destroy_reg_param(&reg_params[2]);
+ destroy_reg_param(&reg_params[3]);
+ destroy_reg_param(&reg_params[4]);
+
+ return retval;
+}
+
+/* All-JTAG, single-access method. Very slow. Used only if there is no
+ * working area available. */
+static int aduc702x_write_single(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ uint32_t x;
+ uint8_t b;
+ struct target *target = bank->target;
+
+ aduc702x_set_write_enable(target, 1);
+
+ for (x = 0; x < count; x += 2) {
+ // FEEADR = address
+ target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEADR, offset + x);
+
+ // set up data
+ if ((x + 1) == count)
+ {
+ // last byte
+ target_read_u8(target, offset + x + 1, &b);
+ }
+ else
+ b = buffer[x + 1];
+
+ target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEDAT, buffer[x] | (b << 8));
+
+ // do single-write command
+ target_write_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEECON, 0x02);
+
+ if (aduc702x_check_flash_completion(target, 1) != ERROR_OK)
+ {
+ LOG_ERROR("single write failed for address 0x%08lX\n", (unsigned long)(offset + x));
+ aduc702x_set_write_enable(target, 0);
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ }
+ LOG_DEBUG("wrote %d bytes at address 0x%08lX\n", (int)count, (unsigned long)(offset + x));
+
+ aduc702x_set_write_enable(target, 0);
+
+ return ERROR_OK;
+}
+
+int aduc702x_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ int retval;
+
+ /* try using a block write */
+ if ((retval = aduc702x_write_block(bank, buffer, offset, count)) != ERROR_OK)
+ {
+ if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
+ {
+ /* if block write failed (no sufficient working area),
+ * use normal (slow) JTAG method */
+ LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
+
+ if ((retval = aduc702x_write_single(bank, buffer, offset, count)) != ERROR_OK)
+ {
+ LOG_ERROR("slow write failed");
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+ }
+ }
+
+ return retval;
+}
+
+static int aduc702x_probe(struct flash_bank *bank)
+{
+ return ERROR_OK;
+}
+
+static int aduc702x_info(struct flash_bank *bank, char *buf, int buf_size)
+{
+ snprintf(buf, buf_size, "aduc702x flash driver info");
+ return ERROR_OK;
+}
+
+/* sets FEEMOD bit 3
+ * enable = 1 enables writes & erases, 0 disables them */
+static int aduc702x_set_write_enable(struct target *target, int enable)
+{
+ // don't bother to preserve int enable bit here
+ target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEMOD, enable ? 8 : 0);
+
+ return ERROR_OK;
+}
+
+/* wait up to timeout_ms for controller to not be busy,
+ * then check whether the command passed or failed.
+ *
+ * this function sleeps 1ms between checks (after the first one),
+ * so in some cases may slow things down without a usleep after the first read */
+static int aduc702x_check_flash_completion(struct target* target, unsigned int timeout_ms)
+{
+ uint8_t v = 4;
+
+ long long endtime = timeval_ms() + timeout_ms;
+ while (1) {
+ target_read_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEESTA, &v);
+ if ((v & 4) == 0) break;
+ alive_sleep(1);
+ if (timeval_ms() >= endtime) break;
+ }
+
+ if (v & 2) return ERROR_FAIL;
+ // if a command is ignored, both the success and fail bits may be 0
+ else if ((v & 3) == 0) return ERROR_FAIL;
+ else return ERROR_OK;
+}
+
+struct flash_driver aduc702x_flash = {
+ .name = "aduc702x",
+ .flash_bank_command = &aduc702x_flash_bank_command,
+ .erase = &aduc702x_erase,
+ .protect = &aduc702x_protect,
+ .write = &aduc702x_write,
+ .probe = &aduc702x_probe,
+ .auto_probe = &aduc702x_probe,
+ .erase_check = &default_flash_blank_check,
+ .protect_check = &aduc702x_protect_check,
+ .info = &aduc702x_info
+ };
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