Hi Bo,
On 05/19/2014 05:13 AM, Bo Shen wrote:
On 05/16/2014 05:59 PM, Andreas Bießmann wrote:
For sama5d3xek we need to modify the SPL image for correct detection by ROM code.
Signed-off-by: Andreas Bießmann andreas.devel@googlemail.com
Changes in v2:
add -n switch to mkimage for PMECC type NAND and CONFIG_SYS_NANDFLASH
arch/arm/cpu/armv7/at91/config.mk | 10 ++++++++++ doc/README.atmel_pmecc | 30 ++++++++++++++++++++++++++++++ spl/Makefile | 18 ++++++++++++++++++ 3 files changed, 58 insertions(+) create mode 100644 arch/arm/cpu/armv7/at91/config.mk
diff --git a/doc/README.atmel_pmecc b/doc/README.atmel_pmecc index cf8373b..5a93123 100644 --- a/doc/README.atmel_pmecc +++ b/doc/README.atmel_pmecc @@ -27,3 +27,33 @@ 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
+How to enable PMECC header for direct programmable boot.bin +----------------------------------------------------------- +2014-05-15 Andreas Bießmann andreas.devel@googlemail.com
+The usual way to program SPL into NAND flash is to use the SAM-BA Atmel tool. +This however is often not usable when doing field updates. To be able to +program a SPL binary into NAND flash we need to add the PMECC header to the +binary before. Chapter '12.4.4.1 NAND Flash Boot: NAND Flash Detection' in +sama5d3 SoC spec (as of 03. April 2014). We have a new image type added to +mkimage to generate this PMECC header and integrated into the build process of +SPL. +The required parameters in board configuration header are as follows:
+This example is working for sama5d3xek:
+#define CONFIG_SPL_AT91_HEADER_USE_PMECC 1 +#define CONFIG_SPL_AT91_HEADER_SECTOR_PER_PAGE 4 +#define CONFIG_SPL_AT91_HEADER_SECTOR_SIZE CONFIG_PMECC_SECTOR_SIZE +#define CONFIG_SPL_AT91_HEADER_SPARE_SIZE 64 +#define CONFIG_SPL_AT91_HEADER_ECC_BITS CONFIG_PMECC_CAP +#define CONFIG_SPL_AT91_HEADER_ECC_OFFSET 36
Just a nitpick here:
Can we take this parameter from the existing definition while not use new definition? Or else, if the header using different parameter with what u-boot nand driver use, then if flash through u-boot, it won't boot.
I used the two parameters I found, sorry the rest isn't defiend anywhere (or I can't find). Can you give me pointers to the other parameters?
Best regards
Andreas Bießmann