diff options
Diffstat (limited to 'src/flash/str9x.c')
-rw-r--r-- | src/flash/str9x.c | 1259 |
1 files changed, 624 insertions, 635 deletions
diff --git a/src/flash/str9x.c b/src/flash/str9x.c index d79e984f..f5fe2e96 100644 --- a/src/flash/str9x.c +++ b/src/flash/str9x.c @@ -1,635 +1,624 @@ -/*************************************************************************** - * Copyright (C) 2005 by Dominic Rath * - * Dominic.Rath@gmx.de * - * * - * 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 "replacements.h" - -#include "str9x.h" -#include "flash.h" -#include "target.h" -#include "log.h" -#include "armv4_5.h" -#include "arm966e.h" -#include "algorithm.h" -#include "binarybuffer.h" - -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -str9x_mem_layout_t mem_layout_str9bank0[] = { - {0x00000000, 0x10000, 0x01}, - {0x00010000, 0x10000, 0x02}, - {0x00020000, 0x10000, 0x04}, - {0x00030000, 0x10000, 0x08}, - {0x00040000, 0x10000, 0x10}, - {0x00050000, 0x10000, 0x20}, - {0x00060000, 0x10000, 0x40}, - {0x00070000, 0x10000, 0x80}, -}; - -str9x_mem_layout_t mem_layout_str9bank1[] = { - {0x00000000, 0x02000, 0x100}, - {0x00002000, 0x02000, 0x200}, - {0x00004000, 0x02000, 0x400}, - {0x00006000, 0x02000, 0x800} -}; - -static u32 bank1start = 0x00080000; - -int str9x_register_commands(struct command_context_s *cmd_ctx); -int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank); -int str9x_erase(struct flash_bank_s *bank, int first, int last); -int str9x_protect(struct flash_bank_s *bank, int set, int first, int last); -int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count); -int str9x_probe(struct flash_bank_s *bank); -int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); -int str9x_protect_check(struct flash_bank_s *bank); -int str9x_erase_check(struct flash_bank_s *bank); -int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size); - -int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); - -flash_driver_t str9x_flash = -{ - .name = "str9x", - .register_commands = str9x_register_commands, - .flash_bank_command = str9x_flash_bank_command, - .erase = str9x_erase, - .protect = str9x_protect, - .write = str9x_write, - .probe = str9x_probe, - .auto_probe = str9x_probe, - .erase_check = str9x_erase_check, - .protect_check = str9x_protect_check, - .info = str9x_info -}; - -int str9x_register_commands(struct command_context_s *cmd_ctx) -{ - command_t *str9x_cmd = register_command(cmd_ctx, NULL, "str9x", NULL, COMMAND_ANY, NULL); - - register_command(cmd_ctx, str9x_cmd, "flash_config", str9x_handle_flash_config_command, COMMAND_EXEC, - "configure str9 flash controller"); - - return ERROR_OK; -} - -int str9x_build_block_list(struct flash_bank_s *bank) -{ - str9x_flash_bank_t *str9x_info = bank->driver_priv; - - int i; - int num_sectors = 0; - int b0_sectors = 0, b1_sectors = 0; - - switch (bank->size) - { - case (256 * 1024): - b0_sectors = 4; - break; - case (512 * 1024): - b0_sectors = 8; - break; - case (32 * 1024): - b1_sectors = 4; - bank1start = bank->base; - break; - default: - ERROR("BUG: unknown bank->size encountered"); - exit(-1); - } - - num_sectors = b0_sectors + b1_sectors; - - bank->num_sectors = num_sectors; - bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors); - str9x_info->sector_bits = malloc(sizeof(u32) * num_sectors); - - num_sectors = 0; - - for (i = 0; i < b0_sectors; i++) - { - bank->sectors[num_sectors].offset = mem_layout_str9bank0[i].sector_start; - bank->sectors[num_sectors].size = mem_layout_str9bank0[i].sector_size; - bank->sectors[num_sectors].is_erased = -1; - bank->sectors[num_sectors].is_protected = 1; - str9x_info->sector_bits[num_sectors++] = mem_layout_str9bank0[i].sector_bit; - } - - for (i = 0; i < b1_sectors; i++) - { - bank->sectors[num_sectors].offset = mem_layout_str9bank1[i].sector_start; - bank->sectors[num_sectors].size = mem_layout_str9bank1[i].sector_size; - bank->sectors[num_sectors].is_erased = -1; - bank->sectors[num_sectors].is_protected = 1; - str9x_info->sector_bits[num_sectors++] = mem_layout_str9bank1[i].sector_bit; - } - - return ERROR_OK; -} - -/* flash bank str9x <base> <size> 0 0 <target#> - */ -int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank) -{ - str9x_flash_bank_t *str9x_info; - - if (argc < 6) - { - WARNING("incomplete flash_bank str9x configuration"); - return ERROR_FLASH_BANK_INVALID; - } - - str9x_info = malloc(sizeof(str9x_flash_bank_t)); - bank->driver_priv = str9x_info; - - str9x_build_block_list(bank); - - str9x_info->write_algorithm = NULL; - - return ERROR_OK; -} - -int str9x_blank_check(struct flash_bank_s *bank, int first, int last) -{ - target_t *target = bank->target; - u8 *buffer; - int i; - int nBytes; - - if ((first < 0) || (last > bank->num_sectors)) - return ERROR_FLASH_SECTOR_INVALID; - - if (bank->target->state != TARGET_HALTED) - { - return ERROR_TARGET_NOT_HALTED; - } - - buffer = malloc(256); - - for (i = first; i <= last; i++) - { - bank->sectors[i].is_erased = 1; - - target->type->read_memory(target, bank->base + bank->sectors[i].offset, 4, 256/4, buffer); - - for (nBytes = 0; nBytes < 256; nBytes++) - { - if (buffer[nBytes] != 0xFF) - { - bank->sectors[i].is_erased = 0; - break; - } - } - } - - free(buffer); - - return ERROR_OK; -} - -int str9x_protect_check(struct flash_bank_s *bank) -{ - str9x_flash_bank_t *str9x_info = bank->driver_priv; - target_t *target = bank->target; - - int i; - u32 adr; - u16 status; - - if (bank->target->state != TARGET_HALTED) - { - return ERROR_TARGET_NOT_HALTED; - } - - /* read level one protection */ - - adr = bank1start + 0x10; - - target_write_u16(target, adr, 0x90); - target_read_u16(target, adr, &status); - target_write_u16(target, adr, 0xFF); - - for (i = 0; i < bank->num_sectors; i++) - { - if (status & str9x_info->sector_bits[i]) - bank->sectors[i].is_protected = 1; - else - bank->sectors[i].is_protected = 0; - } - - return ERROR_OK; -} - -int str9x_erase(struct flash_bank_s *bank, int first, int last) -{ - target_t *target = bank->target; - int i; - u32 adr; - u8 status; - - if (bank->target->state != TARGET_HALTED) - { - return ERROR_TARGET_NOT_HALTED; - } - - for (i = first; i <= last; i++) - { - adr = bank->base + bank->sectors[i].offset; - - /* erase sectors */ - target_write_u16(target, adr, 0x20); - target_write_u16(target, adr, 0xD0); - - /* get status */ - target_write_u16(target, adr, 0x70); - - while (1) { - target_read_u8(target, adr, &status); - if( status & 0x80 ) - break; - usleep(1000); - } - - /* clear status, also clear read array */ - target_write_u16(target, adr, 0x50); - - /* read array command */ - target_write_u16(target, adr, 0xFF); - - if( status & 0x22 ) - { - ERROR("error erasing flash bank, status: 0x%x", status); - return ERROR_FLASH_OPERATION_FAILED; - } - } - - for (i = first; i <= last; i++) - bank->sectors[i].is_erased = 1; - - return ERROR_OK; -} - -int str9x_protect(struct flash_bank_s *bank, int set, int first, int last) -{ - target_t *target = bank->target; - int i; - u32 adr; - u8 status; - - if (bank->target->state != TARGET_HALTED) - { - return ERROR_TARGET_NOT_HALTED; - } - - for (i = first; i <= last; i++) - { - /* Level One Protection */ - - adr = bank->base + bank->sectors[i].offset; - - target_write_u16(target, adr, 0x60); - if( set ) - target_write_u16(target, adr, 0x01); - else - target_write_u16(target, adr, 0xD0); - - /* query status */ - target_read_u8(target, adr, &status); - } - - return ERROR_OK; -} - -int str9x_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count) -{ - str9x_flash_bank_t *str9x_info = bank->driver_priv; - target_t *target = bank->target; - u32 buffer_size = 8192; - working_area_t *source; - u32 address = bank->base + offset; - reg_param_t reg_params[4]; - armv4_5_algorithm_t armv4_5_info; - int retval; - - u32 str9x_flash_write_code[] = { - /* write: */ - 0xe3c14003, /* bic r4, r1, #3 */ - 0xe3a03040, /* mov r3, #0x40 */ - 0xe1c430b0, /* strh r3, [r4, #0] */ - 0xe0d030b2, /* ldrh r3, [r0], #2 */ - 0xe0c130b2, /* strh r3, [r1], #2 */ - 0xe3a03070, /* mov r3, #0x70 */ - 0xe1c430b0, /* strh r3, [r4, #0] */ - /* busy: */ - 0xe5d43000, /* ldrb r3, [r4, #0] */ - 0xe3130080, /* tst r3, #0x80 */ - 0x0afffffc, /* beq busy */ - 0xe3a05050, /* mov r5, #0x50 */ - 0xe1c450b0, /* strh r5, [r4, #0] */ - 0xe3a050ff, /* mov r5, #0xFF */ - 0xe1c450b0, /* strh r5, [r4, #0] */ - 0xe3130012, /* tst r3, #0x12 */ - 0x1a000001, /* bne exit */ - 0xe2522001, /* subs r2, r2, #1 */ - 0x1affffed, /* bne write */ - /* exit: */ - 0xeafffffe, /* b exit */ - }; - - /* flash write code */ - if (target_alloc_working_area(target, 4 * 19, &str9x_info->write_algorithm) != ERROR_OK) - { - WARNING("no working area available, can't do block memory writes"); - return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; - }; - - target_write_buffer(target, str9x_info->write_algorithm->address, 19 * 4, (u8*)str9x_flash_write_code); - - /* 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 (str9x_info->write_algorithm) - target_free_working_area(target, str9x_info->write_algorithm); - - 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(®_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) - { - u32 thisrun_count = (count > (buffer_size / 2)) ? (buffer_size / 2) : count; - - target_write_buffer(target, source->address, thisrun_count * 2, buffer); - - 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->type->run_algorithm(target, 0, NULL, 4, reg_params, str9x_info->write_algorithm->address, str9x_info->write_algorithm->address + (18 * 4), 10000, &armv4_5_info)) != ERROR_OK) - { - target_free_working_area(target, source); - target_free_working_area(target, str9x_info->write_algorithm); - ERROR("error executing str9x flash write algorithm"); - return ERROR_FLASH_OPERATION_FAILED; - } - - if (buf_get_u32(reg_params[3].value, 0, 32) != 0x80) - { - return ERROR_FLASH_OPERATION_FAILED; - } - - buffer += thisrun_count * 2; - address += thisrun_count * 2; - count -= thisrun_count; - } - - target_free_working_area(target, source); - target_free_working_area(target, str9x_info->write_algorithm); - - destroy_reg_param(®_params[0]); - destroy_reg_param(®_params[1]); - destroy_reg_param(®_params[2]); - destroy_reg_param(®_params[3]); - - return ERROR_OK; -} - -int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count) -{ - target_t *target = bank->target; - u32 words_remaining = (count / 2); - u32 bytes_remaining = (count & 0x00000001); - u32 address = bank->base + offset; - u32 bytes_written = 0; - u8 status; - u32 retval; - u32 check_address = offset; - u32 bank_adr; - int i; - - if (bank->target->state != TARGET_HALTED) - { - return ERROR_TARGET_NOT_HALTED; - } - - if (offset & 0x1) - { - WARNING("offset 0x%x breaks required 2-byte alignment", offset); - return ERROR_FLASH_DST_BREAKS_ALIGNMENT; - } - - for (i = 0; i < bank->num_sectors; i++) - { - u32 sec_start = bank->sectors[i].offset; - u32 sec_end = sec_start + bank->sectors[i].size; - - /* check if destination falls within the current sector */ - if ((check_address >= sec_start) && (check_address < sec_end)) - { - /* check if destination ends in the current sector */ - if (offset + count < sec_end) - check_address = offset + count; - else - check_address = sec_end; - } - } - - if (check_address != offset + count) - return ERROR_FLASH_DST_OUT_OF_BANK; - - /* multiple half words (2-byte) to be programmed? */ - if (words_remaining > 0) - { - /* try using a block write */ - if ((retval = str9x_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 */ - WARNING("couldn't use block writes, falling back to single memory accesses"); - } - else if (retval == ERROR_FLASH_OPERATION_FAILED) - { - 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) - { - bank_adr = address & ~0x03; - - /* write data command */ - target_write_u16(target, bank_adr, 0x40); - target->type->write_memory(target, address, 2, 1, buffer + bytes_written); - - /* get status command */ - target_write_u16(target, bank_adr, 0x70); - - while (1) { - target_read_u8(target, bank_adr, &status); - if( status & 0x80 ) - break; - usleep(1000); - } - - /* clear status reg and read array */ - target_write_u16(target, bank_adr, 0x50); - target_write_u16(target, bank_adr, 0xFF); - - if (status & 0x10) - return ERROR_FLASH_OPERATION_FAILED; - else if (status & 0x02) - return ERROR_FLASH_OPERATION_FAILED; - - bytes_written += 2; - words_remaining--; - address += 2; - } - - if (bytes_remaining) - { - u8 last_halfword[2] = {0xff, 0xff}; - int i = 0; - - while(bytes_remaining > 0) - { - last_halfword[i++] = *(buffer + bytes_written); - bytes_remaining--; - bytes_written++; - } - - bank_adr = address & ~0x03; - - /* write data comamnd */ - target_write_u16(target, bank_adr, 0x40); - target->type->write_memory(target, address, 2, 1, last_halfword); - - /* query status command */ - target_write_u16(target, bank_adr, 0x70); - - while (1) { - target_read_u8(target, bank_adr, &status); - if( status & 0x80 ) - break; - usleep(1000); - } - - /* clear status reg and read array */ - target_write_u16(target, bank_adr, 0x50); - target_write_u16(target, bank_adr, 0xFF); - - if (status & 0x10) - return ERROR_FLASH_OPERATION_FAILED; - else if (status & 0x02) - return ERROR_FLASH_OPERATION_FAILED; - } - - return ERROR_OK; -} - -int str9x_probe(struct flash_bank_s *bank) -{ - return ERROR_OK; -} - -int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - return ERROR_OK; -} - -int str9x_erase_check(struct flash_bank_s *bank) -{ - return str9x_blank_check(bank, 0, bank->num_sectors - 1); -} - -int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size) -{ - snprintf(buf, buf_size, "str9x flash driver info" ); - return ERROR_OK; -} - -int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - str9x_flash_bank_t *str9x_info; - flash_bank_t *bank; - target_t *target = NULL; - - if (argc < 5) - { - command_print(cmd_ctx, "usage: str9x flash_config <bank> <bbsize> <nbsize> <bbstart> <nbstart>"); - return ERROR_OK; - } - - bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0)); - if (!bank) - { - command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]); - return ERROR_OK; - } - - str9x_info = bank->driver_priv; - - target = bank->target; - - if (bank->target->state != TARGET_HALTED) - { - return ERROR_TARGET_NOT_HALTED; - } - - /* config flash controller */ - target_write_u32(target, FLASH_BBSR, strtoul(args[1], NULL, 0)); - target_write_u32(target, FLASH_NBBSR, strtoul(args[2], NULL, 0)); - target_write_u32(target, FLASH_BBADR, (strtoul(args[3], NULL, 0) >> 2)); - target_write_u32(target, FLASH_NBBADR, (strtoul(args[4], NULL, 0) >> 2)); - - /* set bit 18 instruction TCM order as per flash programming manual */ - arm966e_write_cp15(target, 62, 0x40000); - - /* enable flash bank 1 */ - target_write_u32(target, FLASH_CR, 0x18); - return ERROR_OK; -} +/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * 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 "replacements.h"
+
+#include "str9x.h"
+#include "flash.h"
+#include "target.h"
+#include "log.h"
+#include "armv4_5.h"
+#include "arm966e.h"
+#include "algorithm.h"
+#include "binarybuffer.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+str9x_mem_layout_t mem_layout_str9bank0[] = {
+ {0x00000000, 0x10000, 0x01},
+ {0x00010000, 0x10000, 0x02},
+ {0x00020000, 0x10000, 0x04},
+ {0x00030000, 0x10000, 0x08},
+ {0x00040000, 0x10000, 0x10},
+ {0x00050000, 0x10000, 0x20},
+ {0x00060000, 0x10000, 0x40},
+ {0x00070000, 0x10000, 0x80},
+};
+
+str9x_mem_layout_t mem_layout_str9bank1[] = {
+ {0x00000000, 0x02000, 0x100},
+ {0x00002000, 0x02000, 0x200},
+ {0x00004000, 0x02000, 0x400},
+ {0x00006000, 0x02000, 0x800}
+};
+
+static u32 bank1start = 0x00080000;
+
+int str9x_register_commands(struct command_context_s *cmd_ctx);
+int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
+int str9x_erase(struct flash_bank_s *bank, int first, int last);
+int str9x_protect(struct flash_bank_s *bank, int set, int first, int last);
+int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
+int str9x_probe(struct flash_bank_s *bank);
+int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int str9x_protect_check(struct flash_bank_s *bank);
+int str9x_erase_check(struct flash_bank_s *bank);
+int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size);
+
+int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+
+flash_driver_t str9x_flash =
+{
+ .name = "str9x",
+ .register_commands = str9x_register_commands,
+ .flash_bank_command = str9x_flash_bank_command,
+ .erase = str9x_erase,
+ .protect = str9x_protect,
+ .write = str9x_write,
+ .probe = str9x_probe,
+ .auto_probe = str9x_probe,
+ .erase_check = str9x_erase_check,
+ .protect_check = str9x_protect_check,
+ .info = str9x_info
+};
+
+int str9x_register_commands(struct command_context_s *cmd_ctx)
+{
+ command_t *str9x_cmd = register_command(cmd_ctx, NULL, "str9x", NULL, COMMAND_ANY, NULL);
+
+ register_command(cmd_ctx, str9x_cmd, "flash_config", str9x_handle_flash_config_command, COMMAND_EXEC,
+ "configure str9 flash controller");
+
+ return ERROR_OK;
+}
+
+int str9x_build_block_list(struct flash_bank_s *bank)
+{
+ str9x_flash_bank_t *str9x_info = bank->driver_priv;
+
+ int i;
+ int num_sectors = 0;
+ int b0_sectors = 0, b1_sectors = 0;
+
+ switch (bank->size)
+ {
+ case (256 * 1024):
+ b0_sectors = 4;
+ break;
+ case (512 * 1024):
+ b0_sectors = 8;
+ break;
+ case (32 * 1024):
+ b1_sectors = 4;
+ bank1start = bank->base;
+ break;
+ default:
+ ERROR("BUG: unknown bank->size encountered");
+ exit(-1);
+ }
+
+ num_sectors = b0_sectors + b1_sectors;
+
+ bank->num_sectors = num_sectors;
+ bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
+ str9x_info->sector_bits = malloc(sizeof(u32) * num_sectors);
+
+ num_sectors = 0;
+
+ for (i = 0; i < b0_sectors; i++)
+ {
+ bank->sectors[num_sectors].offset = mem_layout_str9bank0[i].sector_start;
+ bank->sectors[num_sectors].size = mem_layout_str9bank0[i].sector_size;
+ bank->sectors[num_sectors].is_erased = -1;
+ bank->sectors[num_sectors].is_protected = 1;
+ str9x_info->sector_bits[num_sectors++] = mem_layout_str9bank0[i].sector_bit;
+ }
+
+ for (i = 0; i < b1_sectors; i++)
+ {
+ bank->sectors[num_sectors].offset = mem_layout_str9bank1[i].sector_start;
+ bank->sectors[num_sectors].size = mem_layout_str9bank1[i].sector_size;
+ bank->sectors[num_sectors].is_erased = -1;
+ bank->sectors[num_sectors].is_protected = 1;
+ str9x_info->sector_bits[num_sectors++] = mem_layout_str9bank1[i].sector_bit;
+ }
+
+ return ERROR_OK;
+}
+
+/* flash bank str9x <base> <size> 0 0 <target#>
+ */
+int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
+{
+ str9x_flash_bank_t *str9x_info;
+
+ if (argc < 6)
+ {
+ WARNING("incomplete flash_bank str9x configuration");
+ return ERROR_FLASH_BANK_INVALID;
+ }
+
+ str9x_info = malloc(sizeof(str9x_flash_bank_t));
+ bank->driver_priv = str9x_info;
+
+ str9x_build_block_list(bank);
+
+ str9x_info->write_algorithm = NULL;
+
+ return ERROR_OK;
+}
+
+int str9x_blank_check(struct flash_bank_s *bank, int first, int last)
+{
+ target_t *target = bank->target;
+ u8 *buffer;
+ int i;
+ int nBytes;
+
+ if ((first < 0) || (last > bank->num_sectors))
+ return ERROR_FLASH_SECTOR_INVALID;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ buffer = malloc(256);
+
+ for (i = first; i <= last; i++)
+ {
+ bank->sectors[i].is_erased = 1;
+
+ target->type->read_memory(target, bank->base + bank->sectors[i].offset, 4, 256/4, buffer);
+
+ for (nBytes = 0; nBytes < 256; nBytes++)
+ {
+ if (buffer[nBytes] != 0xFF)
+ {
+ bank->sectors[i].is_erased = 0;
+ break;
+ }
+ }
+ }
+
+ free(buffer);
+
+ return ERROR_OK;
+}
+
+int str9x_protect_check(struct flash_bank_s *bank)
+{
+ str9x_flash_bank_t *str9x_info = bank->driver_priv;
+ target_t *target = bank->target;
+
+ int i;
+ u32 adr;
+ u16 status;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ /* read level one protection */
+
+ adr = bank1start + 0x10;
+
+ target_write_u16(target, adr, 0x90);
+ target_read_u16(target, adr, &status);
+ target_write_u16(target, adr, 0xFF);
+
+ for (i = 0; i < bank->num_sectors; i++)
+ {
+ if (status & str9x_info->sector_bits[i])
+ bank->sectors[i].is_protected = 1;
+ else
+ bank->sectors[i].is_protected = 0;
+ }
+
+ return ERROR_OK;
+}
+
+int str9x_erase(struct flash_bank_s *bank, int first, int last)
+{
+ target_t *target = bank->target;
+ int i;
+ u32 adr;
+ u8 status;
+
+ for (i = first; i <= last; i++)
+ {
+ adr = bank->base + bank->sectors[i].offset;
+
+ /* erase sectors */
+ target_write_u16(target, adr, 0x20);
+ target_write_u16(target, adr, 0xD0);
+
+ /* get status */
+ target_write_u16(target, adr, 0x70);
+
+ while (1) {
+ target_read_u8(target, adr, &status);
+ if( status & 0x80 )
+ break;
+ usleep(1000);
+ }
+
+ /* clear status, also clear read array */
+ target_write_u16(target, adr, 0x50);
+
+ /* read array command */
+ target_write_u16(target, adr, 0xFF);
+
+ if( status & 0x22 )
+ {
+ ERROR("error erasing flash bank, status: 0x%x", status);
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+ }
+
+ for (i = first; i <= last; i++)
+ bank->sectors[i].is_erased = 1;
+
+ return ERROR_OK;
+}
+
+int str9x_protect(struct flash_bank_s *bank, int set, int first, int last)
+{
+ target_t *target = bank->target;
+ int i;
+ u32 adr;
+ u8 status;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ for (i = first; i <= last; i++)
+ {
+ /* Level One Protection */
+
+ adr = bank->base + bank->sectors[i].offset;
+
+ target_write_u16(target, adr, 0x60);
+ if( set )
+ target_write_u16(target, adr, 0x01);
+ else
+ target_write_u16(target, adr, 0xD0);
+
+ /* query status */
+ target_read_u8(target, adr, &status);
+ }
+
+ return ERROR_OK;
+}
+
+int str9x_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
+{
+ str9x_flash_bank_t *str9x_info = bank->driver_priv;
+ target_t *target = bank->target;
+ u32 buffer_size = 8192;
+ working_area_t *source;
+ u32 address = bank->base + offset;
+ reg_param_t reg_params[4];
+ armv4_5_algorithm_t armv4_5_info;
+ int retval;
+
+ u32 str9x_flash_write_code[] = {
+ /* write: */
+ 0xe3c14003, /* bic r4, r1, #3 */
+ 0xe3a03040, /* mov r3, #0x40 */
+ 0xe1c430b0, /* strh r3, [r4, #0] */
+ 0xe0d030b2, /* ldrh r3, [r0], #2 */
+ 0xe0c130b2, /* strh r3, [r1], #2 */
+ 0xe3a03070, /* mov r3, #0x70 */
+ 0xe1c430b0, /* strh r3, [r4, #0] */
+ /* busy: */
+ 0xe5d43000, /* ldrb r3, [r4, #0] */
+ 0xe3130080, /* tst r3, #0x80 */
+ 0x0afffffc, /* beq busy */
+ 0xe3a05050, /* mov r5, #0x50 */
+ 0xe1c450b0, /* strh r5, [r4, #0] */
+ 0xe3a050ff, /* mov r5, #0xFF */
+ 0xe1c450b0, /* strh r5, [r4, #0] */
+ 0xe3130012, /* tst r3, #0x12 */
+ 0x1a000001, /* bne exit */
+ 0xe2522001, /* subs r2, r2, #1 */
+ 0x1affffed, /* bne write */
+ /* exit: */
+ 0xeafffffe, /* b exit */
+ };
+
+ /* flash write code */
+ if (target_alloc_working_area(target, 4 * 19, &str9x_info->write_algorithm) != ERROR_OK)
+ {
+ WARNING("no working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ };
+
+ target_write_buffer(target, str9x_info->write_algorithm->address, 19 * 4, (u8*)str9x_flash_write_code);
+
+ /* 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 (str9x_info->write_algorithm)
+ target_free_working_area(target, str9x_info->write_algorithm);
+
+ 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(®_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)
+ {
+ u32 thisrun_count = (count > (buffer_size / 2)) ? (buffer_size / 2) : count;
+
+ target_write_buffer(target, source->address, thisrun_count * 2, buffer);
+
+ 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->type->run_algorithm(target, 0, NULL, 4, reg_params, str9x_info->write_algorithm->address, str9x_info->write_algorithm->address + (18 * 4), 10000, &armv4_5_info)) != ERROR_OK)
+ {
+ target_free_working_area(target, source);
+ target_free_working_area(target, str9x_info->write_algorithm);
+ ERROR("error executing str9x flash write algorithm");
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ if (buf_get_u32(reg_params[3].value, 0, 32) != 0x80)
+ {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ buffer += thisrun_count * 2;
+ address += thisrun_count * 2;
+ count -= thisrun_count;
+ }
+
+ target_free_working_area(target, source);
+ target_free_working_area(target, str9x_info->write_algorithm);
+
+ destroy_reg_param(®_params[0]);
+ destroy_reg_param(®_params[1]);
+ destroy_reg_param(®_params[2]);
+ destroy_reg_param(®_params[3]);
+
+ return ERROR_OK;
+}
+
+int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
+{
+ target_t *target = bank->target;
+ u32 words_remaining = (count / 2);
+ u32 bytes_remaining = (count & 0x00000001);
+ u32 address = bank->base + offset;
+ u32 bytes_written = 0;
+ u8 status;
+ u32 retval;
+ u32 check_address = offset;
+ u32 bank_adr;
+ int i;
+
+ if (offset & 0x1)
+ {
+ WARNING("offset 0x%x breaks required 2-byte alignment", offset);
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+
+ for (i = 0; i < bank->num_sectors; i++)
+ {
+ u32 sec_start = bank->sectors[i].offset;
+ u32 sec_end = sec_start + bank->sectors[i].size;
+
+ /* check if destination falls within the current sector */
+ if ((check_address >= sec_start) && (check_address < sec_end))
+ {
+ /* check if destination ends in the current sector */
+ if (offset + count < sec_end)
+ check_address = offset + count;
+ else
+ check_address = sec_end;
+ }
+ }
+
+ if (check_address != offset + count)
+ return ERROR_FLASH_DST_OUT_OF_BANK;
+
+ /* multiple half words (2-byte) to be programmed? */
+ if (words_remaining > 0)
+ {
+ /* try using a block write */
+ if ((retval = str9x_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 */
+ WARNING("couldn't use block writes, falling back to single memory accesses");
+ }
+ else if (retval == ERROR_FLASH_OPERATION_FAILED)
+ {
+ 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)
+ {
+ bank_adr = address & ~0x03;
+
+ /* write data command */
+ target_write_u16(target, bank_adr, 0x40);
+ target->type->write_memory(target, address, 2, 1, buffer + bytes_written);
+
+ /* get status command */
+ target_write_u16(target, bank_adr, 0x70);
+
+ while (1) {
+ target_read_u8(target, bank_adr, &status);
+ if( status & 0x80 )
+ break;
+ usleep(1000);
+ }
+
+ /* clear status reg and read array */
+ target_write_u16(target, bank_adr, 0x50);
+ target_write_u16(target, bank_adr, 0xFF);
+
+ if (status & 0x10)
+ return ERROR_FLASH_OPERATION_FAILED;
+ else if (status & 0x02)
+ return ERROR_FLASH_OPERATION_FAILED;
+
+ bytes_written += 2;
+ words_remaining--;
+ address += 2;
+ }
+
+ if (bytes_remaining)
+ {
+ u8 last_halfword[2] = {0xff, 0xff};
+ int i = 0;
+
+ while(bytes_remaining > 0)
+ {
+ last_halfword[i++] = *(buffer + bytes_written);
+ bytes_remaining--;
+ bytes_written++;
+ }
+
+ bank_adr = address & ~0x03;
+
+ /* write data comamnd */
+ target_write_u16(target, bank_adr, 0x40);
+ target->type->write_memory(target, address, 2, 1, last_halfword);
+
+ /* query status command */
+ target_write_u16(target, bank_adr, 0x70);
+
+ while (1) {
+ target_read_u8(target, bank_adr, &status);
+ if( status & 0x80 )
+ break;
+ usleep(1000);
+ }
+
+ /* clear status reg and read array */
+ target_write_u16(target, bank_adr, 0x50);
+ target_write_u16(target, bank_adr, 0xFF);
+
+ if (status & 0x10)
+ return ERROR_FLASH_OPERATION_FAILED;
+ else if (status & 0x02)
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ return ERROR_OK;
+}
+
+int str9x_probe(struct flash_bank_s *bank)
+{
+ return ERROR_OK;
+}
+
+int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ return ERROR_OK;
+}
+
+int str9x_erase_check(struct flash_bank_s *bank)
+{
+ return str9x_blank_check(bank, 0, bank->num_sectors - 1);
+}
+
+int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size)
+{
+ snprintf(buf, buf_size, "str9x flash driver info" );
+ return ERROR_OK;
+}
+
+int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ str9x_flash_bank_t *str9x_info;
+ flash_bank_t *bank;
+ target_t *target = NULL;
+
+ if (argc < 5)
+ {
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
+ if (!bank)
+ {
+ command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
+ return ERROR_OK;
+ }
+
+ str9x_info = bank->driver_priv;
+
+ target = bank->target;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ /* config flash controller */
+ target_write_u32(target, FLASH_BBSR, strtoul(args[1], NULL, 0));
+ target_write_u32(target, FLASH_NBBSR, strtoul(args[2], NULL, 0));
+ target_write_u32(target, FLASH_BBADR, (strtoul(args[3], NULL, 0) >> 2));
+ target_write_u32(target, FLASH_NBBADR, (strtoul(args[4], NULL, 0) >> 2));
+
+ /* set bit 18 instruction TCM order as per flash programming manual */
+ arm966e_write_cp15(target, 62, 0x40000);
+
+ /* enable flash bank 1 */
+ target_write_u32(target, FLASH_CR, 0x18);
+ return ERROR_OK;
+}
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