>>>>> "Pekon" == Pekon Gupta <pe...@ti.com> writes:
Pekon> NAND boot mode on AM335x EVM has been verified, and steps
Pekon> to use it has been documented and update in this README
Pekon> Signed-off-by: Pekon Gupta <pe...@ti.com>
Pekon> ---
Pekon> board/ti/am335x/README | 59
+++++++++++++++++++++++++++++++++++---------------
Pekon> 1 file changed, 42 insertions(+), 17 deletions(-)
Pekon> diff --git a/board/ti/am335x/README b/board/ti/am335x/README
Pekon> index 67b5246..d34cbab 100644
Pekon> --- a/board/ti/am335x/README
Pekon> +++ b/board/ti/am335x/README
Pekon> @@ -20,23 +20,48 @@ NAND
Pekon> The AM335x GP EVM ships with a 256MiB NAND available in most profiles.
In
Pekon> this example to program the NAND we assume that an SD card has been
Pekon> inserted with the files to write in the first SD slot and that mtdparts
Pekon> -have been configured correctly for the board. As a time saving
measure we
Pekon> -load MLO into memory in one location, copy it into the three
locatations
Pekon> -that the ROM checks for additional valid copies, then load U-Boot into
Pekon> -memory. We then write that whole section of memory to NAND.
Pekon> -
Pekon> -U-Boot # mmc rescan
Pekon> -U-Boot # env default -f -a
Pekon> -U-Boot # nand erase.chip
Pekon> -U-Boot # saveenv
Pekon> -U-Boot # load mmc 0 81000000 MLO
Pekon> -U-Boot # cp.b 81000000 81020000 20000
Pekon> -U-Boot # cp.b 81000000 81040000 20000
Pekon> -U-Boot # cp.b 81000000 81060000 20000
Pekon> -U-Boot # load mmc 0 81080000 u-boot.img
Pekon> -U-Boot # nand write 81000000 0 260000
Pekon> -U-Boot # load mmc 0 ${loadaddr} uImage
Pekon> -U-Boot # nand write ${loadaddr} kernel 500000
Pekon> +have been configured correctly for the board. All images are firstl
loaded
s/firstl/first/
Pekon> +into memory, then written to NAND.
Pekon> +
Pekon> +Step-1: Building u-boot for NAND boot
Pekon> + Set following CONFIGxx options for NAND device.
Pekon> + CONFIG_SYS_NAND_PAGE_SIZE number of main bytes in NAND
page
Pekon> + CONFIG_SYS_NAND_OOBSIZE number of OOB bytes in NAND page
Pekon> + CONFIG_SYS_NAND_BLOCK_SIZE number of bytes in NAND
erase-block
Pekon> + CONFIG_SYS_NAND_ECCPOS ECC map for NAND page
Pekon> + CONFIG_SYS_NAND_ECCSCHEME ECC scheme used by NAND
Pekon> + 0 - HAM1_SW
Pekon> + 1 - HAM1_HW
Pekon> + 2 - BCH4_SW (unsupported)
Pekon> + 3 - BCH4_HW (unsupported)
Pekon> + 4 - BCH8_SW
Pekon> + 5 - BCH8_HW
Pekon> +
Pekon> +Step-2: Flashing NAND via MMC/SD
Pekon> + # select BOOTSEL to MMC/SD boot and boot from MMC/SD card
Pekon> + U-Boot # mmc rescan
Pekon> + # erase flash
Pekon> + U-Boot # nand erase.chip
Pekon> + U-Boot # env default -f -a
Pekon> + U-Boot # saveenv
Pekon> + # flash MLO. redundant copies of MLO are kept for backup
s/redundant/Redundant/
s/backup/failsafe/
Otherwise it looks good.
Acked-by: Peter Korsgaard <jac...@sunsite.dk>
--
Bye, Peter Korsgaard
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