From fe9228a32db930be297d4d3b35ffb94d6de1b9ab Mon Sep 17 00:00:00 2001 From: Zachary T Welch Date: Wed, 2 Dec 2009 15:54:15 -0800 Subject: move nor drivers to src/flash/nor Moves NOR flash drivers to 'src/flash/nor/'. Adds 'src/flash/nor/Makefile.am'. Builds 'libocdflashnor.la'. --- src/flash/stm32x.c | 1240 ---------------------------------------------------- 1 file changed, 1240 deletions(-) delete mode 100644 src/flash/stm32x.c (limited to 'src/flash/stm32x.c') diff --git a/src/flash/stm32x.c b/src/flash/stm32x.c deleted file mode 100644 index 2f51aa55..00000000 --- a/src/flash/stm32x.c +++ /dev/null @@ -1,1240 +0,0 @@ -/*************************************************************************** - * Copyright (C) 2005 by Dominic Rath * - * Dominic.Rath@gmx.de * - * * - * Copyright (C) 2008 by Spencer Oliver * - * spen@spen-soft.co.uk * - * * - * 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 "stm32x.h" -#include "armv7m.h" -#include "binarybuffer.h" -#include "algorithm.h" - - -static int stm32x_mass_erase(struct flash_bank *bank); - -/* flash bank stm32x 0 0 - */ -FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command) -{ - struct stm32x_flash_bank *stm32x_info; - - if (CMD_ARGC < 6) - { - LOG_WARNING("incomplete flash_bank stm32x configuration"); - return ERROR_FLASH_BANK_INVALID; - } - - stm32x_info = malloc(sizeof(struct stm32x_flash_bank)); - bank->driver_priv = stm32x_info; - - stm32x_info->write_algorithm = NULL; - stm32x_info->probed = 0; - - return ERROR_OK; -} - -static uint32_t stm32x_get_flash_status(struct flash_bank *bank) -{ - struct target *target = bank->target; - uint32_t status; - - target_read_u32(target, STM32_FLASH_SR, &status); - - return status; -} - -static uint32_t stm32x_wait_status_busy(struct flash_bank *bank, int timeout) -{ - struct target *target = bank->target; - uint32_t status; - - /* wait for busy to clear */ - while (((status = stm32x_get_flash_status(bank)) & FLASH_BSY) && (timeout-- > 0)) - { - LOG_DEBUG("status: 0x%" PRIx32 "", status); - alive_sleep(1); - } - /* Clear but report errors */ - if (status & (FLASH_WRPRTERR | FLASH_PGERR)) - { - target_write_u32(target, STM32_FLASH_SR, FLASH_WRPRTERR | FLASH_PGERR); - } - return status; -} - -static int stm32x_read_options(struct flash_bank *bank) -{ - uint32_t optiondata; - struct stm32x_flash_bank *stm32x_info = NULL; - struct target *target = bank->target; - - stm32x_info = bank->driver_priv; - - /* read current option bytes */ - target_read_u32(target, STM32_FLASH_OBR, &optiondata); - - stm32x_info->option_bytes.user_options = (uint16_t)0xFFF8 | ((optiondata >> 2) & 0x07); - stm32x_info->option_bytes.RDP = (optiondata & (1 << OPT_READOUT)) ? 0xFFFF : 0x5AA5; - - if (optiondata & (1 << OPT_READOUT)) - LOG_INFO("Device Security Bit Set"); - - /* each bit refers to a 4bank protection */ - target_read_u32(target, STM32_FLASH_WRPR, &optiondata); - - stm32x_info->option_bytes.protection[0] = (uint16_t)optiondata; - stm32x_info->option_bytes.protection[1] = (uint16_t)(optiondata >> 8); - stm32x_info->option_bytes.protection[2] = (uint16_t)(optiondata >> 16); - stm32x_info->option_bytes.protection[3] = (uint16_t)(optiondata >> 24); - - return ERROR_OK; -} - -static int stm32x_erase_options(struct flash_bank *bank) -{ - struct stm32x_flash_bank *stm32x_info = NULL; - struct target *target = bank->target; - uint32_t status; - - stm32x_info = bank->driver_priv; - - /* read current options */ - stm32x_read_options(bank); - - /* unlock flash registers */ - target_write_u32(target, STM32_FLASH_KEYR, KEY1); - target_write_u32(target, STM32_FLASH_KEYR, KEY2); - - /* unlock option flash registers */ - target_write_u32(target, STM32_FLASH_OPTKEYR, KEY1); - target_write_u32(target, STM32_FLASH_OPTKEYR, KEY2); - - /* erase option bytes */ - target_write_u32(target, STM32_FLASH_CR, FLASH_OPTER | FLASH_OPTWRE); - target_write_u32(target, STM32_FLASH_CR, FLASH_OPTER | FLASH_STRT | FLASH_OPTWRE); - - status = stm32x_wait_status_busy(bank, 10); - - if (status & FLASH_WRPRTERR) - return ERROR_FLASH_OPERATION_FAILED; - if (status & FLASH_PGERR) - return ERROR_FLASH_OPERATION_FAILED; - - /* clear readout protection and complementary option bytes - * this will also force a device unlock if set */ - stm32x_info->option_bytes.RDP = 0x5AA5; - - return ERROR_OK; -} - -static int stm32x_write_options(struct flash_bank *bank) -{ - struct stm32x_flash_bank *stm32x_info = NULL; - struct target *target = bank->target; - uint32_t status; - - stm32x_info = bank->driver_priv; - - /* unlock flash registers */ - target_write_u32(target, STM32_FLASH_KEYR, KEY1); - target_write_u32(target, STM32_FLASH_KEYR, KEY2); - - /* unlock option flash registers */ - target_write_u32(target, STM32_FLASH_OPTKEYR, KEY1); - target_write_u32(target, STM32_FLASH_OPTKEYR, KEY2); - - /* program option bytes */ - target_write_u32(target, STM32_FLASH_CR, FLASH_OPTPG | FLASH_OPTWRE); - - /* write user option byte */ - target_write_u16(target, STM32_OB_USER, stm32x_info->option_bytes.user_options); - - status = stm32x_wait_status_busy(bank, 10); - - if (status & FLASH_WRPRTERR) - return ERROR_FLASH_OPERATION_FAILED; - if (status & FLASH_PGERR) - return ERROR_FLASH_OPERATION_FAILED; - - /* write protection byte 1 */ - target_write_u16(target, STM32_OB_WRP0, stm32x_info->option_bytes.protection[0]); - - status = stm32x_wait_status_busy(bank, 10); - - if (status & FLASH_WRPRTERR) - return ERROR_FLASH_OPERATION_FAILED; - if (status & FLASH_PGERR) - return ERROR_FLASH_OPERATION_FAILED; - - /* write protection byte 2 */ - target_write_u16(target, STM32_OB_WRP1, stm32x_info->option_bytes.protection[1]); - - status = stm32x_wait_status_busy(bank, 10); - - if (status & FLASH_WRPRTERR) - return ERROR_FLASH_OPERATION_FAILED; - if (status & FLASH_PGERR) - return ERROR_FLASH_OPERATION_FAILED; - - /* write protection byte 3 */ - target_write_u16(target, STM32_OB_WRP2, stm32x_info->option_bytes.protection[2]); - - status = stm32x_wait_status_busy(bank, 10); - - if (status & FLASH_WRPRTERR) - return ERROR_FLASH_OPERATION_FAILED; - if (status & FLASH_PGERR) - return ERROR_FLASH_OPERATION_FAILED; - - /* write protection byte 4 */ - target_write_u16(target, STM32_OB_WRP3, stm32x_info->option_bytes.protection[3]); - - status = stm32x_wait_status_busy(bank, 10); - - if (status & FLASH_WRPRTERR) - return ERROR_FLASH_OPERATION_FAILED; - if (status & FLASH_PGERR) - return ERROR_FLASH_OPERATION_FAILED; - - /* write readout protection bit */ - target_write_u16(target, STM32_OB_RDP, stm32x_info->option_bytes.RDP); - - status = stm32x_wait_status_busy(bank, 10); - - if (status & FLASH_WRPRTERR) - return ERROR_FLASH_OPERATION_FAILED; - if (status & FLASH_PGERR) - return ERROR_FLASH_OPERATION_FAILED; - - target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); - - return ERROR_OK; -} - -static int stm32x_protect_check(struct flash_bank *bank) -{ - struct target *target = bank->target; - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - - uint32_t protection; - int i, s; - int num_bits; - int set; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - /* medium density - each bit refers to a 4bank protection - * high density - each bit refers to a 2bank protection */ - target_read_u32(target, STM32_FLASH_WRPR, &protection); - - /* medium density - each protection bit is for 4 * 1K pages - * high density - each protection bit is for 2 * 2K pages */ - num_bits = (bank->num_sectors / stm32x_info->ppage_size); - - if (stm32x_info->ppage_size == 2) - { - /* high density flash/connectivity line protection */ - - set = 1; - - if (protection & (1 << 31)) - set = 0; - - /* bit 31 controls sector 62 - 255 protection for high density - * bit 31 controls sector 62 - 127 protection for connectivity line */ - for (s = 62; s < bank->num_sectors; s++) - { - bank->sectors[s].is_protected = set; - } - - if (bank->num_sectors > 61) - num_bits = 31; - - for (i = 0; i < num_bits; i++) - { - set = 1; - - if (protection & (1 << i)) - set = 0; - - for (s = 0; s < stm32x_info->ppage_size; s++) - bank->sectors[(i * stm32x_info->ppage_size) + s].is_protected = set; - } - } - else - { - /* low/medium density flash protection */ - for (i = 0; i < num_bits; i++) - { - set = 1; - - if (protection & (1 << i)) - set = 0; - - for (s = 0; s < stm32x_info->ppage_size; s++) - bank->sectors[(i * stm32x_info->ppage_size) + s].is_protected = set; - } - } - - return ERROR_OK; -} - -static int stm32x_erase(struct flash_bank *bank, int first, int last) -{ - struct target *target = bank->target; - int i; - uint32_t status; - - if (bank->target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - if ((first == 0) && (last == (bank->num_sectors - 1))) - { - return stm32x_mass_erase(bank); - } - - /* unlock flash registers */ - target_write_u32(target, STM32_FLASH_KEYR, KEY1); - target_write_u32(target, STM32_FLASH_KEYR, KEY2); - - for (i = first; i <= last; i++) - { - target_write_u32(target, STM32_FLASH_CR, FLASH_PER); - target_write_u32(target, STM32_FLASH_AR, bank->base + bank->sectors[i].offset); - target_write_u32(target, STM32_FLASH_CR, FLASH_PER | FLASH_STRT); - - status = stm32x_wait_status_busy(bank, 10); - - if (status & FLASH_WRPRTERR) - return ERROR_FLASH_OPERATION_FAILED; - if (status & FLASH_PGERR) - return ERROR_FLASH_OPERATION_FAILED; - bank->sectors[i].is_erased = 1; - } - - target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); - - return ERROR_OK; -} - -static int stm32x_protect(struct flash_bank *bank, int set, int first, int last) -{ - struct stm32x_flash_bank *stm32x_info = NULL; - struct target *target = bank->target; - uint16_t prot_reg[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF}; - int i, reg, bit; - int status; - uint32_t protection; - - stm32x_info = bank->driver_priv; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - if ((first && (first % stm32x_info->ppage_size)) || ((last + 1) && (last + 1) % stm32x_info->ppage_size)) - { - LOG_WARNING("Error: start and end sectors must be on a %d sector boundary", stm32x_info->ppage_size); - return ERROR_FLASH_SECTOR_INVALID; - } - - /* medium density - each bit refers to a 4bank protection - * high density - each bit refers to a 2bank protection */ - target_read_u32(target, STM32_FLASH_WRPR, &protection); - - prot_reg[0] = (uint16_t)protection; - prot_reg[1] = (uint16_t)(protection >> 8); - prot_reg[2] = (uint16_t)(protection >> 16); - prot_reg[3] = (uint16_t)(protection >> 24); - - if (stm32x_info->ppage_size == 2) - { - /* high density flash */ - - /* bit 7 controls sector 62 - 255 protection */ - if (last > 61) - { - if (set) - prot_reg[3] &= ~(1 << 7); - else - prot_reg[3] |= (1 << 7); - } - - if (first > 61) - first = 62; - if (last > 61) - last = 61; - - for (i = first; i <= last; i++) - { - reg = (i / stm32x_info->ppage_size) / 8; - bit = (i / stm32x_info->ppage_size) - (reg * 8); - - if (set) - prot_reg[reg] &= ~(1 << bit); - else - prot_reg[reg] |= (1 << bit); - } - } - else - { - /* medium density flash */ - for (i = first; i <= last; i++) - { - reg = (i / stm32x_info->ppage_size) / 8; - bit = (i / stm32x_info->ppage_size) - (reg * 8); - - if (set) - prot_reg[reg] &= ~(1 << bit); - else - prot_reg[reg] |= (1 << bit); - } - } - - if ((status = stm32x_erase_options(bank)) != ERROR_OK) - return status; - - stm32x_info->option_bytes.protection[0] = prot_reg[0]; - stm32x_info->option_bytes.protection[1] = prot_reg[1]; - stm32x_info->option_bytes.protection[2] = prot_reg[2]; - stm32x_info->option_bytes.protection[3] = prot_reg[3]; - - return stm32x_write_options(bank); -} - -static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count) -{ - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - struct target *target = bank->target; - uint32_t buffer_size = 16384; - struct working_area *source; - uint32_t address = bank->base + offset; - struct reg_param reg_params[4]; - struct armv7m_algorithm armv7m_info; - int retval = ERROR_OK; - - uint8_t stm32x_flash_write_code[] = { - /* write: */ - 0xDF, 0xF8, 0x24, 0x40, /* ldr r4, STM32_FLASH_CR */ - 0x09, 0x4D, /* ldr r5, STM32_FLASH_SR */ - 0x4F, 0xF0, 0x01, 0x03, /* mov r3, #1 */ - 0x23, 0x60, /* str r3, [r4, #0] */ - 0x30, 0xF8, 0x02, 0x3B, /* ldrh r3, [r0], #2 */ - 0x21, 0xF8, 0x02, 0x3B, /* strh r3, [r1], #2 */ - /* busy: */ - 0x2B, 0x68, /* ldr r3, [r5, #0] */ - 0x13, 0xF0, 0x01, 0x0F, /* tst r3, #0x01 */ - 0xFB, 0xD0, /* beq busy */ - 0x13, 0xF0, 0x14, 0x0F, /* tst r3, #0x14 */ - 0x01, 0xD1, /* bne exit */ - 0x01, 0x3A, /* subs r2, r2, #1 */ - 0xED, 0xD1, /* bne write */ - /* exit: */ - 0xFE, 0xE7, /* b exit */ - 0x10, 0x20, 0x02, 0x40, /* STM32_FLASH_CR: .word 0x40022010 */ - 0x0C, 0x20, 0x02, 0x40 /* STM32_FLASH_SR: .word 0x4002200C */ - }; - - /* flash write code */ - if (target_alloc_working_area(target, sizeof(stm32x_flash_write_code), &stm32x_info->write_algorithm) != ERROR_OK) - { - LOG_WARNING("no working area available, can't do block memory writes"); - return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; - }; - - if ((retval = target_write_buffer(target, stm32x_info->write_algorithm->address, sizeof(stm32x_flash_write_code), stm32x_flash_write_code)) != 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 (stm32x_info->write_algorithm) - target_free_working_area(target, stm32x_info->write_algorithm); - - LOG_WARNING("no large enough working area available, can't do block memory writes"); - return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; - } - }; - - armv7m_info.common_magic = ARMV7M_COMMON_MAGIC; - armv7m_info.core_mode = ARMV7M_MODE_ANY; - - init_reg_param(®_params[0], "r0", 32, PARAM_OUT); - init_reg_param(®_params[1], "r1", 32, PARAM_OUT); - init_reg_param(®_params[2], "r2", 32, PARAM_OUT); - init_reg_param(®_params[3], "r3", 32, PARAM_IN); - - while (count > 0) - { - uint32_t thisrun_count = (count > (buffer_size / 2)) ? (buffer_size / 2) : count; - - if ((retval = target_write_buffer(target, source->address, thisrun_count * 2, buffer)) != ERROR_OK) - break; - - buf_set_u32(reg_params[0].value, 0, 32, source->address); - buf_set_u32(reg_params[1].value, 0, 32, address); - buf_set_u32(reg_params[2].value, 0, 32, thisrun_count); - - if ((retval = target_run_algorithm(target, 0, NULL, 4, reg_params, stm32x_info->write_algorithm->address, \ - stm32x_info->write_algorithm->address + (sizeof(stm32x_flash_write_code) - 10), 10000, &armv7m_info)) != ERROR_OK) - { - LOG_ERROR("error executing stm32x flash write algorithm"); - retval = ERROR_FLASH_OPERATION_FAILED; - break; - } - - if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_PGERR) - { - LOG_ERROR("flash memory not erased before writing"); - /* Clear but report errors */ - target_write_u32(target, STM32_FLASH_SR, FLASH_PGERR); - retval = ERROR_FLASH_OPERATION_FAILED; - break; - } - - if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_WRPRTERR) - { - LOG_ERROR("flash memory write protected"); - /* Clear but report errors */ - target_write_u32(target, STM32_FLASH_SR, FLASH_WRPRTERR); - retval = ERROR_FLASH_OPERATION_FAILED; - break; - } - - buffer += thisrun_count * 2; - address += thisrun_count * 2; - count -= thisrun_count; - } - - target_free_working_area(target, source); - target_free_working_area(target, stm32x_info->write_algorithm); - - destroy_reg_param(®_params[0]); - destroy_reg_param(®_params[1]); - destroy_reg_param(®_params[2]); - destroy_reg_param(®_params[3]); - - return retval; -} - -static int stm32x_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count) -{ - struct target *target = bank->target; - uint32_t words_remaining = (count / 2); - uint32_t bytes_remaining = (count & 0x00000001); - uint32_t address = bank->base + offset; - uint32_t bytes_written = 0; - uint8_t status; - int retval; - - if (bank->target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - if (offset & 0x1) - { - LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset); - return ERROR_FLASH_DST_BREAKS_ALIGNMENT; - } - - /* unlock flash registers */ - target_write_u32(target, STM32_FLASH_KEYR, KEY1); - target_write_u32(target, STM32_FLASH_KEYR, KEY2); - - /* multiple half words (2-byte) to be programmed? */ - if (words_remaining > 0) - { - /* try using a block write */ - if ((retval = stm32x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK) - { - if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) - { - /* if block write failed (no sufficient working area), - * we use normal (slow) single dword accesses */ - LOG_WARNING("couldn't use block writes, falling back to single memory accesses"); - } - else if (retval == ERROR_FLASH_OPERATION_FAILED) - { - LOG_ERROR("flash writing failed with error code: 0x%x", retval); - return ERROR_FLASH_OPERATION_FAILED; - } - } - else - { - buffer += words_remaining * 2; - address += words_remaining * 2; - words_remaining = 0; - } - } - - while (words_remaining > 0) - { - uint16_t value; - memcpy(&value, buffer + bytes_written, sizeof(uint16_t)); - - target_write_u32(target, STM32_FLASH_CR, FLASH_PG); - target_write_u16(target, address, value); - - status = stm32x_wait_status_busy(bank, 5); - - if (status & FLASH_WRPRTERR) - { - LOG_ERROR("flash memory not erased before writing"); - return ERROR_FLASH_OPERATION_FAILED; - } - if (status & FLASH_PGERR) - { - LOG_ERROR("flash memory write protected"); - return ERROR_FLASH_OPERATION_FAILED; - } - - bytes_written += 2; - words_remaining--; - address += 2; - } - - if (bytes_remaining) - { - uint16_t value = 0xffff; - memcpy(&value, buffer + bytes_written, bytes_remaining); - - target_write_u32(target, STM32_FLASH_CR, FLASH_PG); - target_write_u16(target, address, value); - - status = stm32x_wait_status_busy(bank, 5); - - if (status & FLASH_WRPRTERR) - { - LOG_ERROR("flash memory not erased before writing"); - return ERROR_FLASH_OPERATION_FAILED; - } - if (status & FLASH_PGERR) - { - LOG_ERROR("flash memory write protected"); - return ERROR_FLASH_OPERATION_FAILED; - } - } - - target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); - - return ERROR_OK; -} - -static int stm32x_probe(struct flash_bank *bank) -{ - struct target *target = bank->target; - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - int i; - uint16_t num_pages; - uint32_t device_id; - int page_size; - - if (bank->target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - stm32x_info->probed = 0; - - /* read stm32 device id register */ - target_read_u32(target, 0xE0042000, &device_id); - LOG_INFO("device id = 0x%08" PRIx32 "", device_id); - - /* get flash size from target */ - if (target_read_u16(target, 0x1FFFF7E0, &num_pages) != ERROR_OK) - { - /* failed reading flash size, default to max target family */ - num_pages = 0xffff; - } - - if ((device_id & 0x7ff) == 0x410) - { - /* medium density - we have 1k pages - * 4 pages for a protection area */ - page_size = 1024; - stm32x_info->ppage_size = 4; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors incorrect on revA */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash"); - num_pages = 128; - } - } - else if ((device_id & 0x7ff) == 0x412) - { - /* low density - we have 1k pages - * 4 pages for a protection area */ - page_size = 1024; - stm32x_info->ppage_size = 4; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors incorrect on revA */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 32k flash"); - num_pages = 32; - } - } - else if ((device_id & 0x7ff) == 0x414) - { - /* high density - we have 2k pages - * 2 pages for a protection area */ - page_size = 2048; - stm32x_info->ppage_size = 2; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors incorrect on revZ */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 512k flash"); - num_pages = 512; - } - } - else if ((device_id & 0x7ff) == 0x418) - { - /* connectivity line density - we have 2k pages - * 2 pages for a protection area */ - page_size = 2048; - stm32x_info->ppage_size = 2; - - /* check for early silicon */ - if (num_pages == 0xffff) - { - /* number of sectors incorrect on revZ */ - LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 256k flash"); - num_pages = 256; - } - } - else - { - LOG_WARNING("Cannot identify target as a STM32 family."); - return ERROR_FLASH_OPERATION_FAILED; - } - - LOG_INFO("flash size = %dkbytes", num_pages); - - /* calculate numbers of pages */ - num_pages /= (page_size / 1024); - - bank->base = 0x08000000; - bank->size = (num_pages * page_size); - bank->num_sectors = num_pages; - bank->sectors = malloc(sizeof(struct flash_sector) * num_pages); - - for (i = 0; i < num_pages; i++) - { - bank->sectors[i].offset = i * page_size; - bank->sectors[i].size = page_size; - bank->sectors[i].is_erased = -1; - bank->sectors[i].is_protected = 1; - } - - stm32x_info->probed = 1; - - return ERROR_OK; -} - -static int stm32x_auto_probe(struct flash_bank *bank) -{ - struct stm32x_flash_bank *stm32x_info = bank->driver_priv; - if (stm32x_info->probed) - return ERROR_OK; - return stm32x_probe(bank); -} - -#if 0 -COMMAND_HANDLER(stm32x_handle_part_id_command) -{ - return ERROR_OK; -} -#endif - -static int stm32x_info(struct flash_bank *bank, char *buf, int buf_size) -{ - struct target *target = bank->target; - uint32_t device_id; - int printed; - - /* read stm32 device id register */ - target_read_u32(target, 0xE0042000, &device_id); - - if ((device_id & 0x7ff) == 0x410) - { - printed = snprintf(buf, buf_size, "stm32x (Medium Density) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x0000: - snprintf(buf, buf_size, "A"); - break; - - case 0x2000: - snprintf(buf, buf_size, "B"); - break; - - case 0x2001: - snprintf(buf, buf_size, "Z"); - break; - - case 0x2003: - snprintf(buf, buf_size, "Y"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else if ((device_id & 0x7ff) == 0x412) - { - printed = snprintf(buf, buf_size, "stm32x (Low Density) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x1000: - snprintf(buf, buf_size, "A"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else if ((device_id & 0x7ff) == 0x414) - { - printed = snprintf(buf, buf_size, "stm32x (High Density) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x1000: - snprintf(buf, buf_size, "A"); - break; - - case 0x1001: - snprintf(buf, buf_size, "Z"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else if ((device_id & 0x7ff) == 0x418) - { - printed = snprintf(buf, buf_size, "stm32x (Connectivity) - Rev: "); - buf += printed; - buf_size -= printed; - - switch (device_id >> 16) - { - case 0x1000: - snprintf(buf, buf_size, "A"); - break; - - case 0x1001: - snprintf(buf, buf_size, "Z"); - break; - - default: - snprintf(buf, buf_size, "unknown"); - break; - } - } - else - { - snprintf(buf, buf_size, "Cannot identify target as a stm32x\n"); - return ERROR_FLASH_OPERATION_FAILED; - } - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_lock_command) -{ - struct target *target = NULL; - struct stm32x_flash_bank *stm32x_info = NULL; - - if (CMD_ARGC < 1) - { - command_print(CMD_CTX, "stm32x lock "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - stm32x_info = bank->driver_priv; - - target = bank->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - if (stm32x_erase_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to erase options"); - return ERROR_OK; - } - - /* set readout protection */ - stm32x_info->option_bytes.RDP = 0; - - if (stm32x_write_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to lock device"); - return ERROR_OK; - } - - command_print(CMD_CTX, "stm32x locked"); - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_unlock_command) -{ - struct target *target = NULL; - struct stm32x_flash_bank *stm32x_info = NULL; - - if (CMD_ARGC < 1) - { - command_print(CMD_CTX, "stm32x unlock "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - stm32x_info = bank->driver_priv; - - target = bank->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - if (stm32x_erase_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to unlock device"); - return ERROR_OK; - } - - if (stm32x_write_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to lock device"); - return ERROR_OK; - } - - command_print(CMD_CTX, "stm32x unlocked"); - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_options_read_command) -{ - uint32_t optionbyte; - struct target *target = NULL; - struct stm32x_flash_bank *stm32x_info = NULL; - - if (CMD_ARGC < 1) - { - command_print(CMD_CTX, "stm32x options_read "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - stm32x_info = bank->driver_priv; - - target = bank->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - target_read_u32(target, STM32_FLASH_OBR, &optionbyte); - command_print(CMD_CTX, "Option Byte: 0x%" PRIx32 "", optionbyte); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_ERROR, 1)) - command_print(CMD_CTX, "Option Byte Complement Error"); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_READOUT, 1)) - command_print(CMD_CTX, "Readout Protection On"); - else - command_print(CMD_CTX, "Readout Protection Off"); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDWDGSW, 1)) - command_print(CMD_CTX, "Software Watchdog"); - else - command_print(CMD_CTX, "Hardware Watchdog"); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDRSTSTOP, 1)) - command_print(CMD_CTX, "Stop: No reset generated"); - else - command_print(CMD_CTX, "Stop: Reset generated"); - - if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDRSTSTDBY, 1)) - command_print(CMD_CTX, "Standby: No reset generated"); - else - command_print(CMD_CTX, "Standby: Reset generated"); - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_options_write_command) -{ - struct target *target = NULL; - struct stm32x_flash_bank *stm32x_info = NULL; - uint16_t optionbyte = 0xF8; - - if (CMD_ARGC < 4) - { - command_print(CMD_CTX, "stm32x options_write "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - stm32x_info = bank->driver_priv; - - target = bank->target; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - if (strcmp(CMD_ARGV[1], "SWWDG") == 0) - { - optionbyte |= (1 << 0); - } - else - { - optionbyte &= ~(1 << 0); - } - - if (strcmp(CMD_ARGV[2], "NORSTSTNDBY") == 0) - { - optionbyte |= (1 << 1); - } - else - { - optionbyte &= ~(1 << 1); - } - - if (strcmp(CMD_ARGV[3], "NORSTSTOP") == 0) - { - optionbyte |= (1 << 2); - } - else - { - optionbyte &= ~(1 << 2); - } - - if (stm32x_erase_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to erase options"); - return ERROR_OK; - } - - stm32x_info->option_bytes.user_options = optionbyte; - - if (stm32x_write_options(bank) != ERROR_OK) - { - command_print(CMD_CTX, "stm32x failed to write options"); - return ERROR_OK; - } - - command_print(CMD_CTX, "stm32x write options complete"); - - return ERROR_OK; -} - -static int stm32x_mass_erase(struct flash_bank *bank) -{ - struct target *target = bank->target; - uint32_t status; - - if (target->state != TARGET_HALTED) - { - LOG_ERROR("Target not halted"); - return ERROR_TARGET_NOT_HALTED; - } - - /* unlock option flash registers */ - target_write_u32(target, STM32_FLASH_KEYR, KEY1); - target_write_u32(target, STM32_FLASH_KEYR, KEY2); - - /* mass erase flash memory */ - target_write_u32(target, STM32_FLASH_CR, FLASH_MER); - target_write_u32(target, STM32_FLASH_CR, FLASH_MER | FLASH_STRT); - - status = stm32x_wait_status_busy(bank, 10); - - target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK); - - if (status & FLASH_WRPRTERR) - { - LOG_ERROR("stm32x device protected"); - return ERROR_OK; - } - - if (status & FLASH_PGERR) - { - LOG_ERROR("stm32x device programming failed"); - return ERROR_OK; - } - - return ERROR_OK; -} - -COMMAND_HANDLER(stm32x_handle_mass_erase_command) -{ - int i; - - if (CMD_ARGC < 1) - { - command_print(CMD_CTX, "stm32x mass_erase "); - return ERROR_OK; - } - - struct flash_bank *bank; - int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank); - if (ERROR_OK != retval) - return retval; - - if (stm32x_mass_erase(bank) == ERROR_OK) - { - /* set all sectors as erased */ - for (i = 0; i < bank->num_sectors; i++) - { - bank->sectors[i].is_erased = 1; - } - - command_print(CMD_CTX, "stm32x mass erase complete"); - } - else - { - command_print(CMD_CTX, "stm32x mass erase failed"); - } - - return ERROR_OK; -} - -static const struct command_registration stm32x_exec_command_handlers[] = { - { - .name = "lock", - .handler = &stm32x_handle_lock_command, - .mode = COMMAND_EXEC, - .help = "lock device", - }, - { - .name = "unlock", - .handler = &stm32x_handle_unlock_command, - .mode = COMMAND_EXEC, - .help = "unlock protected device", - }, - { - .name = "mass_erase", - .handler = &stm32x_handle_mass_erase_command, - .mode = COMMAND_EXEC, - .help = "mass erase device", - }, - { - .name = "options_read", - .handler = &stm32x_handle_options_read_command, - .mode = COMMAND_EXEC, - .help = "read device option bytes", - }, - { - .name = "options_write", - .handler = &stm32x_handle_options_write_command, - .mode = COMMAND_EXEC, - .help = "write device option bytes", - }, - COMMAND_REGISTRATION_DONE -}; -static const struct command_registration stm32x_command_handlers[] = { - { - .name = "stm32x", - .mode = COMMAND_ANY, - .help = "stm32x flash command group", - .chain = stm32x_exec_command_handlers, - }, - COMMAND_REGISTRATION_DONE -}; - -struct flash_driver stm32x_flash = { - .name = "stm32x", - .commands = stm32x_command_handlers, - .flash_bank_command = &stm32x_flash_bank_command, - .erase = &stm32x_erase, - .protect = &stm32x_protect, - .write = &stm32x_write, - .probe = &stm32x_probe, - .auto_probe = &stm32x_auto_probe, - .erase_check = &default_flash_mem_blank_check, - .protect_check = &stm32x_protect_check, - .info = &stm32x_info, - }; -- cgit v1.2.3-18-g5258