diff options
| author | Josh Wu <josh.wu@atmel.com> | 2013-03-22 17:05:54 +0800 |
|---|---|---|
| committer | Josh Wu <josh.wu@atmel.com> | 2013-03-22 17:05:54 +0800 |
| commit | b887fcac6a9665ebcd3a755f29ed06e13fcf76a7 (patch) | |
| tree | f3e412d89c956a99c54ac78e3ad683c86e14d665 /doc | |
| parent | 33a303c268ff2e9711a8d79c4253cb336ae20fcb (diff) | |
ARM: at91: atmel_nand: pmecc driver will select the galois table by sector size
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>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.atmel_pmecc | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/doc/README.atmel_pmecc b/doc/README.atmel_pmecc index b483744ea59..41f3bd78608 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 |