From b2d96dc28ffb2acad250ffb551a442396db83f38 Mon Sep 17 00:00:00 2001 From: "Wu, Josh" <Josh.wu@atmel.com> Date: Wed, 3 Jul 2013 11:11:45 +0800 Subject: [PATCH] ARM: at91: atmel_nand: pmecc driver will select the galois table by sector size MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Define the galois index table offset in chip head file. So user do not need to set by himself. Driver will set it correctly according to sector_size. Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Scott Wood <scottwood@freescale.com> [rebased on master] Signed-off-by: Andreas BieÃmann <andreas.devel@googlemail.com> --- arch/arm/include/asm/arch-at91/at91sam9x5.h | 6 ++++++ doc/README.atmel_pmecc | 14 -------------- drivers/mtd/nand/atmel_nand.c | 5 ++++- include/configs/at91sam9x5ek.h | 1 - include/configs/sama5d3xek.h | 1 - 5 files changed, 10 insertions(+), 17 deletions(-) diff --git a/arch/arm/include/asm/arch-at91/at91sam9x5.h b/arch/arm/include/asm/arch-at91/at91sam9x5.h index fcc6fdc219..a47103851e 100644 --- a/arch/arm/include/asm/arch-at91/at91sam9x5.h +++ b/arch/arm/include/asm/arch-at91/at91sam9x5.h @@ -161,6 +161,12 @@ #define ATMEL_PMC_UHP AT91SAM926x_PMC_UHP #define ATMEL_ID_UHP ATMEL_ID_UHPHS +/* + * PMECC table in ROM + */ +#define ATMEL_PMECC_INDEX_OFFSET_512 0x8000 +#define ATMEL_PMECC_INDEX_OFFSET_1024 0x10000 + /* * at91sam9x5 specific prototypes */ diff --git a/doc/README.atmel_pmecc b/doc/README.atmel_pmecc index b483744ea5..41f3bd7860 100644 --- a/doc/README.atmel_pmecc +++ b/doc/README.atmel_pmecc @@ -19,17 +19,6 @@ To use PMECC in this driver, the user needs to set: It can be 2, 4, 8, 12 or 24. 2. The PMECC sector size: CONFIG_PMECC_SECTOR_SIZE. It only can be 512 or 1024. - 3. The PMECC index lookup table's offsets in ROM code: CONFIG_PMECC_INDEX_TABLE_OFFSET. - In the chip datasheet section "Boot Stragegies", you can find - two Galois Field Table in the ROM code. One table is for 512-bytes - sector. Another is for 1024-byte sector. Each Galois Field includes - two sub-table: indext table & alpha table. - In the beginning of each Galois Field Table is the index table, - Alpha table is in the following. - So the index table's offset is same as the Galois Field Table. - - Please set CONFIG_PMECC_INDEX_TABLE_OFFSET correctly according the - Galois Field Table's offset base on the sector size you used. Take AT91SAM9X5EK as an example, the board definition file likes: @@ -38,7 +27,4 @@ Take AT91SAM9X5EK as an example, the board definition file likes: #define CONFIG_ATMEL_NAND_HW_PMECC 1 #define CONFIG_PMECC_CAP 2 #define CONFIG_PMECC_SECTOR_SIZE 512 -#define CONFIG_PMECC_INDEX_TABLE_OFFSET 0x8000 -NOTE: If you use 1024 as the sector size, then need set 0x10000 as the - CONFIG_PMECC_INDEX_TABLE_OFFSET diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index f844990e38..304491bcb4 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -637,7 +637,10 @@ static int atmel_pmecc_nand_init_params(struct nand_chip *nand, cap = host->pmecc_corr_cap = CONFIG_PMECC_CAP; sector_size = host->pmecc_sector_size = CONFIG_PMECC_SECTOR_SIZE; - host->pmecc_index_table_offset = CONFIG_PMECC_INDEX_TABLE_OFFSET; + if (host->pmecc_sector_size == 512) + host->pmecc_index_table_offset = ATMEL_PMECC_INDEX_OFFSET_512; + else + host->pmecc_index_table_offset = ATMEL_PMECC_INDEX_OFFSET_1024; MTDDEBUG(MTD_DEBUG_LEVEL1, "Initialize PMECC params, cap: %d, sector: %d\n", diff --git a/include/configs/at91sam9x5ek.h b/include/configs/at91sam9x5ek.h index b866a4b0c3..c799955ba6 100644 --- a/include/configs/at91sam9x5ek.h +++ b/include/configs/at91sam9x5ek.h @@ -121,7 +121,6 @@ #define CONFIG_ATMEL_NAND_HW_PMECC 1 #define CONFIG_PMECC_CAP 2 #define CONFIG_PMECC_SECTOR_SIZE 512 -#define CONFIG_PMECC_INDEX_TABLE_OFFSET 0x8000 #define CONFIG_CMD_NAND_TRIMFFS diff --git a/include/configs/sama5d3xek.h b/include/configs/sama5d3xek.h index 3dcf012dd8..ab9617eae9 100644 --- a/include/configs/sama5d3xek.h +++ b/include/configs/sama5d3xek.h @@ -126,7 +126,6 @@ #define CONFIG_ATMEL_NAND_HW_PMECC #define CONFIG_PMECC_CAP 4 #define CONFIG_PMECC_SECTOR_SIZE 512 -#define CONFIG_PMECC_INDEX_TABLE_OFFSET ATMEL_PMECC_INDEX_OFFSET_512 #define CONFIG_CMD_NAND_TRIMFFS #endif -- 2.39.5