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.de...@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.de...@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 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
