diff options
Diffstat (limited to 'drivers/firmware/broadcom/bcm47xx_nvram.c')
| -rw-r--r-- | drivers/firmware/broadcom/bcm47xx_nvram.c | 25 |
1 files changed, 7 insertions, 18 deletions
diff --git a/drivers/firmware/broadcom/bcm47xx_nvram.c b/drivers/firmware/broadcom/bcm47xx_nvram.c index 1d2271b1e07a..bd235833b687 100644 --- a/drivers/firmware/broadcom/bcm47xx_nvram.c +++ b/drivers/firmware/broadcom/bcm47xx_nvram.c @@ -42,18 +42,6 @@ static bool bcm47xx_nvram_is_valid(void __iomem *nvram) return ((struct nvram_header *)nvram)->magic == NVRAM_MAGIC; } -static u32 find_nvram_size(void __iomem *end) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) { - if (bcm47xx_nvram_is_valid(end - nvram_sizes[i])) - return nvram_sizes[i]; - } - - return 0; -} - /** * bcm47xx_nvram_copy - copy NVRAM to internal buffer */ @@ -85,7 +73,7 @@ static int bcm47xx_nvram_find_and_copy(void __iomem *flash_start, size_t res_siz { size_t flash_size; size_t offset; - u32 size; + int i; if (nvram_len) { pr_warn("nvram already initialized\n"); @@ -93,12 +81,13 @@ static int bcm47xx_nvram_find_and_copy(void __iomem *flash_start, size_t res_siz } /* TODO: when nvram is on nand flash check for bad blocks first. */ + + /* Try every possible flash size and check for NVRAM at its end */ for (flash_size = FLASH_MIN; flash_size <= res_size; flash_size <<= 1) { - /* Windowed flash access */ - size = find_nvram_size(flash_start + flash_size); - if (size) { - offset = flash_size - size; - goto found; + for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) { + offset = flash_size - nvram_sizes[i]; + if (bcm47xx_nvram_is_valid(flash_start + offset)) + goto found; } } |