diff options
Diffstat (limited to 'src/flash/stm32x.c')
| -rw-r--r-- | src/flash/stm32x.c | 82 |
1 files changed, 52 insertions, 30 deletions
diff --git a/src/flash/stm32x.c b/src/flash/stm32x.c index 25a9b0da..6742d010 100644 --- a/src/flash/stm32x.c +++ b/src/flash/stm32x.c @@ -277,25 +277,27 @@ int stm32x_write_options(struct flash_bank_s *bank) return ERROR_OK; } - int stm32x_protect_check(struct flash_bank_s *bank) { target_t *target = bank->target; + stm32x_flash_bank_t *stm32x_info = bank->driver_priv; u32 protection; int i, s; int num_bits; - + if (target->state != TARGET_HALTED) { return ERROR_TARGET_NOT_HALTED; } - - /* each bit refers to a 4bank protection */ + + /* 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); - /* each protection bit is for 4 1K pages */ - num_bits = (bank->num_sectors / 4); + /* 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); for (i = 0; i < num_bits; i++) { @@ -304,8 +306,8 @@ int stm32x_protect_check(struct flash_bank_s *bank) if( protection & (1 << i)) set = 0; - for (s = 0; s < 4; s++) - bank->sectors[(i * 4) + s].is_protected = set; + for (s = 0; s < stm32x_info->ppage_size; s++) + bank->sectors[(i * stm32x_info->ppage_size) + s].is_protected = set; } return ERROR_OK; @@ -363,13 +365,14 @@ int stm32x_protect(struct flash_bank_s *bank, int set, int first, int last) return ERROR_TARGET_NOT_HALTED; } - if ((first && (first % 4)) || ((last + 1) && (last + 1) % 4)) + if ((first && (first % stm32x_info->ppage_size)) || ((last + 1) && (last + 1) % stm32x_info->ppage_size)) { - LOG_WARNING("sector start/end incorrect - stm32 has 4K sector protection"); + LOG_WARNING("sector start/end incorrect - stm32 has %dK sector protection", stm32x_info->ppage_size); return ERROR_FLASH_SECTOR_INVALID; } - /* each bit refers to a 4bank protection */ + /* 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] = (u16)protection; @@ -379,8 +382,8 @@ int stm32x_protect(struct flash_bank_s *bank, int set, int first, int last) for (i = first; i <= last; i++) { - reg = (i / 4) / 8; - bit = (i / 4) - (reg * 8); + reg = (i / stm32x_info->ppage_size) / 8; + bit = (i / stm32x_info->ppage_size) - (reg * 8); if( set ) prot_reg[reg] &= ~(1 << bit); @@ -606,8 +609,9 @@ int stm32x_probe(struct flash_bank_s *bank) target_t *target = bank->target; stm32x_flash_bank_t *stm32x_info = bank->driver_priv; int i; - u16 num_sectors; + u16 num_pages; u32 device_id; + int page_size; if (bank->target->state != TARGET_HALTED) { @@ -620,18 +624,33 @@ int stm32x_probe(struct flash_bank_s *bank) target_read_u32(target, 0xE0042000, &device_id); LOG_INFO( "device id = 0x%08x", device_id ); - if (!(device_id & 0x410)) - { - LOG_WARNING( "Cannot identify target as a STM32 family." ); - return ERROR_FLASH_OPERATION_FAILED; - } - + switch (device_id & 0x7ff) + { + case 0x410: + /* medium density - we have 1k pages + * 4 pages for a protection area */ + page_size = 1024; + stm32x_info->ppage_size = 4; + break; + + case 0x414: + /* high density - we have 2k pages + * 2 pages for a protection area */ + page_size = 2048; + stm32x_info->ppage_size = 2; + break; + + default: + LOG_WARNING( "Cannot identify target as a STM32 family." ); + return ERROR_FLASH_OPERATION_FAILED; + } + /* get flash size from target */ - if (target_read_u16(target, 0x1FFFF7E0, &num_sectors) != ERROR_OK) + if (target_read_u16(target, 0x1FFFF7E0, &num_pages) != ERROR_OK) { /* failed reading flash size, default to 128k */ LOG_WARNING( "STM32 flash size failed, probe inaccurate - assuming 128k flash" ); - num_sectors = 128; + num_pages = 128; } /* check for early silicon rev A */ @@ -639,20 +658,23 @@ int stm32x_probe(struct flash_bank_s *bank) { /* number of sectors incorrect on revA */ LOG_WARNING( "STM32 Rev A Silicon detected, probe inaccurate - assuming 128k flash" ); - num_sectors = 128; + num_pages = 128; } - LOG_INFO( "flash size = %dkbytes", num_sectors ); + LOG_INFO( "flash size = %dkbytes", num_pages ); + + /* calculate numbers of pages */ + num_pages /= (page_size - 1024); bank->base = 0x08000000; - bank->size = num_sectors * 1024; - bank->num_sectors = num_sectors; - bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors); + bank->size = (num_pages * page_size); + bank->num_sectors = num_pages; + bank->sectors = malloc(sizeof(flash_sector_t) * num_pages); - for (i = 0; i < num_sectors; i++) + for (i = 0; i < num_pages; i++) { - bank->sectors[i].offset = i * 1024; - bank->sectors[i].size = 1024; + 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; } |