diff options
Diffstat (limited to 'src/flash/nor/core.c')
| -rw-r--r-- | src/flash/nor/core.c | 191 |
1 files changed, 187 insertions, 4 deletions
diff --git a/src/flash/nor/core.c b/src/flash/nor/core.c index 0fff8efc..c2ea134a 100644 --- a/src/flash/nor/core.c +++ b/src/flash/nor/core.c @@ -1,4 +1,7 @@ /*************************************************************************** + * Copyright (C) 2005 by Dominic Rath <Dominic.Rath@gmx.de> * + * Copyright (C) 2007,2008 Øyvind Harboe <oyvind.harboe@zylin.com> * + * Copyright (C) 2008 by Spencer Oliver <spen@spen-soft.co.uk> * * Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net> * * * * This program is free software; you can redistribute it and/or modify * @@ -20,12 +23,13 @@ #ifdef HAVE_CONFIG_H #include <config.h> #endif -#include <flash/flash.h> +#include <flash/common.h> +#include <flash/nor/core.h> #include <flash/nor/imp.h> #include <target/image.h> -// in flash.c, to be moved here -extern struct flash_bank *flash_banks; + +struct flash_bank *flash_banks; int flash_driver_erase(struct flash_bank *bank, int first, int last) { @@ -68,7 +72,6 @@ int flash_driver_write(struct flash_bank *bank, return retval; } - void flash_bank_add(struct flash_bank *bank) { /* put flash bank in linked list */ @@ -96,6 +99,186 @@ struct flash_bank *flash_bank_list(void) return flash_banks; } +struct flash_bank *get_flash_bank_by_num_noprobe(int num) +{ + struct flash_bank *p; + int i = 0; + + for (p = flash_banks; p; p = p->next) + { + if (i++ == num) + { + return p; + } + } + LOG_ERROR("flash bank %d does not exist", num); + return NULL; +} + +int flash_get_bank_count(void) +{ + struct flash_bank *p; + int i = 0; + for (p = flash_banks; p; p = p->next) + { + i++; + } + return i; +} + +struct flash_bank *get_flash_bank_by_name(const char *name) +{ + unsigned requested = get_flash_name_index(name); + unsigned found = 0; + + struct flash_bank *bank; + for (bank = flash_banks; NULL != bank; bank = bank->next) + { + if (strcmp(bank->name, name) == 0) + return bank; + if (!flash_driver_name_matches(bank->driver->name, name)) + continue; + if (++found < requested) + continue; + return bank; + } + return NULL; +} + +struct flash_bank *get_flash_bank_by_num(int num) +{ + struct flash_bank *p = get_flash_bank_by_num_noprobe(num); + int retval; + + if (p == NULL) + return NULL; + + retval = p->driver->auto_probe(p); + + if (retval != ERROR_OK) + { + LOG_ERROR("auto_probe failed %d\n", retval); + return NULL; + } + return p; +} + +/* lookup flash bank by address */ +struct flash_bank *get_flash_bank_by_addr(struct target *target, uint32_t addr) +{ + struct flash_bank *c; + + /* cycle through bank list */ + for (c = flash_banks; c; c = c->next) + { + int retval; + retval = c->driver->auto_probe(c); + + if (retval != ERROR_OK) + { + LOG_ERROR("auto_probe failed %d\n", retval); + return NULL; + } + /* check whether address belongs to this flash bank */ + if ((addr >= c->base) && (addr <= c->base + (c->size - 1)) && target == c->target) + return c; + } + LOG_ERROR("No flash at address 0x%08" PRIx32 "\n", addr); + return NULL; +} + +int default_flash_mem_blank_check(struct flash_bank *bank) +{ + struct target *target = bank->target; + const int buffer_size = 1024; + int i; + uint32_t nBytes; + int retval = ERROR_OK; + + if (bank->target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + uint8_t *buffer = malloc(buffer_size); + + for (i = 0; i < bank->num_sectors; i++) + { + uint32_t j; + bank->sectors[i].is_erased = 1; + + for (j = 0; j < bank->sectors[i].size; j += buffer_size) + { + uint32_t chunk; + chunk = buffer_size; + if (chunk > (j - bank->sectors[i].size)) + { + chunk = (j - bank->sectors[i].size); + } + + retval = target_read_memory(target, bank->base + bank->sectors[i].offset + j, 4, chunk/4, buffer); + if (retval != ERROR_OK) + { + goto done; + } + + for (nBytes = 0; nBytes < chunk; nBytes++) + { + if (buffer[nBytes] != 0xFF) + { + bank->sectors[i].is_erased = 0; + break; + } + } + } + } + + done: + free(buffer); + + return retval; +} + +int default_flash_blank_check(struct flash_bank *bank) +{ + struct target *target = bank->target; + int i; + int retval; + int fast_check = 0; + uint32_t blank; + + if (bank->target->state != TARGET_HALTED) + { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + for (i = 0; i < bank->num_sectors; i++) + { + uint32_t address = bank->base + bank->sectors[i].offset; + uint32_t size = bank->sectors[i].size; + + if ((retval = target_blank_check_memory(target, address, size, &blank)) != ERROR_OK) + { + fast_check = 0; + break; + } + if (blank == 0xFF) + bank->sectors[i].is_erased = 1; + else + bank->sectors[i].is_erased = 0; + fast_check = 1; + } + + if (!fast_check) + { + LOG_USER("Running slow fallback erase check - add working memory"); + return default_flash_mem_blank_check(bank); + } + + return ERROR_OK; +} /* erase given flash region, selects proper bank according to target and address */ static int flash_iterate_address_range(struct target *target, uint32_t addr, uint32_t length, int (*callback)(struct flash_bank *bank, int first, int last)) |