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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2007-07-16 10:29:28 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2007-07-16 10:29:28 +0200 |
| commit | 056a695c15e83f4a85305482fadea67f76fb7528 (patch) | |
| tree | 9d94794fa65bab3f8787605a2e3cf3ca4466b72f /drivers | |
| parent | be6790838d92ebe130f8b66637cef72e40a7b704 (diff) | |
| download | barebox-056a695c15e83f4a85305482fadea67f76fb7528.tar.gz barebox-056a695c15e83f4a85305482fadea67f76fb7528.tar.xz | |
implement flash protection
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/cfi_flash.c | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c index ed08b1049f..1bb6533fab 100644 --- a/drivers/cfi_flash.c +++ b/drivers/cfi_flash.c @@ -411,6 +411,27 @@ out: return ret; } +int cfi_protect(struct device_d *dev, size_t count, unsigned long offset, int prot) +{ + flash_info_t *finfo = (flash_info_t *)dev->priv; + unsigned long start, end; + int i, ret = 0; + + printf("%s: protect 0x%08x (size %d)\n", __FUNCTION__, offset, count); + + start = flash_find_sector(finfo, dev->map_base + offset); + end = flash_find_sector(finfo, dev->map_base + offset + count - 1); + + for (i = start; i <= end; i++) { + ret = flash_real_protect (finfo, i, prot); + if (ret) + goto out; + } +out: + putc('\n'); + return ret; +} + static ssize_t cfi_write(struct device_d* dev, const void* buf, size_t count, unsigned long offset, ulong flags) { flash_info_t *finfo = (flash_info_t *)dev->priv; @@ -518,6 +539,7 @@ static struct driver_d cfi_driver = { .read = mem_read, .write = cfi_write, .erase = cfi_erase, + .protect= cfi_protect, .memmap = generic_memmap_ro, .info = cfi_info, }; @@ -628,10 +650,6 @@ int write_buff (flash_info_t * info, const uchar * src, ulong addr, ulong cnt) return flash_write_cfiword (info, wp, cword); } -/*----------------------------------------------------------------------- - */ -#ifdef CFG_FLASH_PROTECTION - int flash_real_protect (flash_info_t * info, long sector, int prot) { int retcode = 0; @@ -695,7 +713,7 @@ void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset, flash_write_cmd (info, 0, 0, info->cmd_reset); } -#endif /* CFG_FLASH_PROTECTION */ + /* * flash_is_busy - check to see if the flash is busy @@ -1125,9 +1143,7 @@ ulong flash_get_size (flash_info_t *info, ulong base) info->ext_addr = 0; info->cfi_version = 0; -#ifdef CFG_FLASH_PROTECTION info->legacy_unlock = 0; -#endif /* first only malloc space for the first sector */ info->start = malloc(sizeof(ulong)); @@ -1158,13 +1174,11 @@ ulong flash_get_size (flash_info_t *info, ulong base) case CFI_CMDSET_INTEL_EXTENDED: default: info->cmd_reset = FLASH_CMD_RESET; -#ifdef CFG_FLASH_PROTECTION /* read legacy lock/unlock bit from intel flash */ if (info->ext_addr) { info->legacy_unlock = flash_read_uchar (info, info->ext_addr + 5) & 0x08; } -#endif break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: |