diff options
| -rw-r--r-- | drivers/mtd/nand/sunxi_nand_spl.c | 56 |
1 files changed, 14 insertions, 42 deletions
diff --git a/drivers/mtd/nand/sunxi_nand_spl.c b/drivers/mtd/nand/sunxi_nand_spl.c index b0e07aa..1739da2 100644 --- a/drivers/mtd/nand/sunxi_nand_spl.c +++ b/drivers/mtd/nand/sunxi_nand_spl.c @@ -119,9 +119,6 @@ const uint16_t random_seed[128] = { 0x7c57, 0x0fbe, 0x46ce, 0x4939, 0x6b17, 0x37bb, 0x3e91, 0x76db, }; -/* random seed used for syndrome calls */ -const uint16_t random_seed_syndrome = 0x4a80; - #define MAX_RETRIES 10 static int check_value_inner(int offset, int expected_bits, @@ -183,7 +180,7 @@ void nand_init(void) } static int nand_read_page(int page_size, int ecc_strength, int ecc_page_size, - int addr_cycles, uint32_t real_addr, dma_addr_t dst, int syndrome) + int addr_cycles, uint32_t real_addr, dma_addr_t dst) { uint32_t val; int i, ecc_off = 0; @@ -209,17 +206,11 @@ static int nand_read_page(int page_size, int ecc_strength, int ecc_page_size, page = real_addr / page_size; column = real_addr % page_size; - if (syndrome) - column += (column / ecc_page_size) * ecc_off; - /* clear ecc status */ writel(0, SUNXI_NFC_BASE + NFC_ECC_ST); /* Choose correct seed */ - if (syndrome) - rand_seed = random_seed_syndrome; - else - rand_seed = random_seed[page % 128]; + rand_seed = random_seed[page % 128]; writel((rand_seed << 16) | NFC_ECC_RANDOM_EN | NFC_ECC_EN | NFC_ECC_PIPELINE | (ecc_mode << 12), @@ -228,9 +219,8 @@ static int nand_read_page(int page_size, int ecc_strength, int ecc_page_size, val = readl(SUNXI_NFC_BASE + NFC_CTL); writel(val | NFC_CTL_RAM_METHOD, SUNXI_NFC_BASE + NFC_CTL); - if (!syndrome) - writel(page_size + (column / ecc_page_size) * ecc_off, - SUNXI_NFC_BASE + NFC_SPARE_AREA); + writel(page_size + (column / ecc_page_size) * ecc_off, + SUNXI_NFC_BASE + NFC_SPARE_AREA); flush_dcache_range(dst, ALIGN(dst + ecc_page_size, ARCH_DMA_MINALIGN)); @@ -266,7 +256,7 @@ static int nand_read_page(int page_size, int ecc_strength, int ecc_page_size, writel(NFC_SEND_CMD1 | NFC_SEND_CMD2 | NFC_DATA_TRANS | NFC_PAGE_CMD | NFC_WAIT_FLAG | ((addr_cycles - 1) << NFC_ADDR_NUM_OFFSET) | - NFC_SEND_ADR | NFC_DATA_SWAP_METHOD | (syndrome ? NFC_SEQ : 0), + NFC_SEND_ADR | NFC_DATA_SWAP_METHOD, SUNXI_NFC_BASE + NFC_CMD); if (!check_value(SUNXI_NFC_BASE + NFC_ST, NFC_ST_DMA_INT_FLAG, @@ -292,7 +282,7 @@ static int nand_read_page(int page_size, int ecc_strength, int ecc_page_size, } static int nand_read_ecc(int page_size, int ecc_strength, int ecc_page_size, - int addr_cycles, uint32_t offs, uint32_t size, void *dest, int syndrome) + int addr_cycles, uint32_t offs, uint32_t size, void *dest) { void *end = dest + size; @@ -301,16 +291,14 @@ static int nand_read_ecc(int page_size, int ecc_strength, int ecc_page_size, for ( ;dest < end; dest += ecc_page_size, offs += ecc_page_size) { if (nand_read_page(page_size, ecc_strength, ecc_page_size, - addr_cycles, offs, (dma_addr_t)dest, - syndrome)) + addr_cycles, offs, (dma_addr_t)dest)) return -1; } return 0; } -static int nand_read_buffer(uint32_t offs, unsigned int size, void *dest, - int syndrome) +static int nand_read_buffer(uint32_t offs, unsigned int size, void *dest) { const struct { int page_size; @@ -337,7 +325,7 @@ static int nand_read_buffer(uint32_t offs, unsigned int size, void *dest, nand_configs[i].ecc_strength, nand_configs[i].ecc_page_size, nand_configs[i].addr_cycles, - offs, size, dest, syndrome) == 0) { + offs, size, dest) == 0) { debug("success\n"); nand_config = i; return 0; @@ -351,48 +339,32 @@ static int nand_read_buffer(uint32_t offs, unsigned int size, void *dest, nand_configs[nand_config].ecc_strength, nand_configs[nand_config].ecc_page_size, nand_configs[nand_config].addr_cycles, - offs, size, dest, syndrome); + offs, size, dest); } int nand_spl_load_image(uint32_t offs, unsigned int size, void *dest) { -#if CONFIG_SYS_NAND_U_BOOT_OFFS == CONFIG_SPL_PAD_TO - /* - * u-boot-dtb.bin appended to SPL, use syndrome (like the BROM does) - * and try different erase block sizes to find the backup. - */ - const uint32_t boot_offsets[] = { - 0 * 1024 * 1024 + CONFIG_SYS_NAND_U_BOOT_OFFS, - 1 * 1024 * 1024 + CONFIG_SYS_NAND_U_BOOT_OFFS, - 2 * 1024 * 1024 + CONFIG_SYS_NAND_U_BOOT_OFFS, - 4 * 1024 * 1024 + CONFIG_SYS_NAND_U_BOOT_OFFS, - }; - const int syndrome = 1; -#else /* - * u-boot-dtb.bin on its own partition, do not use syndrome, u-boot - * partition sits after 2 eraseblocks (spl, spl-backup), look for - * backup u-boot 1 erase block further. + * u-boot partition sits after 2 eraseblocks (spl, spl-backup), look + * for backup u-boot 1 erase block further. */ const uint32_t eraseblock_size = CONFIG_SYS_NAND_U_BOOT_OFFS / 2; const uint32_t boot_offsets[] = { CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_OFFS + eraseblock_size, }; - const int syndrome = 0; -#endif int i; if (offs == CONFIG_SYS_NAND_U_BOOT_OFFS) { for (i = 0; i < ARRAY_SIZE(boot_offsets); i++) { if (nand_read_buffer(boot_offsets[i], size, - dest, syndrome) == 0) + dest) == 0) return 0; } return -1; } - return nand_read_buffer(offs, size, dest, syndrome); + return nand_read_buffer(offs, size, dest); } void nand_deselect(void) |