[U-Boot] [PATCH v1 0/2] mtd: nand: omap: booting from NAND using u-boot
Gupta, Pekon
pekon at ti.com
Wed Jan 15 05:01:03 CET 2014
Hi Brian,
>From: Enric Balletbo Serra [mailto:eballetbo at gmail.com]
>>2014/1/6 Stefan Roese <sr at denx.de>:
...
>>>> As there were parallel set of patches running between u-boot and kernel.
>>>> hence, some patch-sets caused regression for OMAP3x platforms when booting
>>>> using u-boot specifically for ecc-schemes (like BCH4_SW).
>>>>
>>>> Hence this patch series fixes those regressions, and tests complete
>>>> NAND boot sequence for multiple ecc-schemes on AM335x-EVM board.
>>>> (following configurations are required for building u-boot driver which is
>>>> compatible to kernel ecclayout for selected ecc-scheme)
>>>>
>>>>
>>>> (BCH8_HW) (HAM1_HW) (HAM1_HW) (HAM1_HW) (UBIFS)
>>>> ROM ---------> SPL ---------> U-Boot ---------> Kernel ---------> File-System
>>>>
>>>> (BCH8_HW) (BCH8_SW) (BCH8_SW) (BCH8_SW) (UBIFS)
>>>> ROM ---------> SPL ---------> U-Boot ---------> Kernel ---------> File-System
>>>>
>>>> (BCH8_HW) (BCH8_HW) (BCH8_HW) (BCH8_HW) (UBIFS)
>>>> ROM ---------> SPL ---------> U-Boot ---------> Kernel ---------> File-System
>>>>
>>>> *Configurations used to build u-boot and kernel for end-to-end NAND boot*
>>>> +------------+--------------------------------------------+------------------+
>>>> | ecc-scheme | u-boot/SPL configs | kernel DTS |
>>>> +------------+--------------------------------------------+------------------+
>>>> | | | |
>>>> | HAM1_HW | #define CONFIG_NAND_OMAP_ECCSCHEME \ |ti,nand-ecc-opts= |
>>>> | | OMAP_ECC_HAM1_CODE_HW | "ham1" |
>>>> | (1-bit | #define CONFIG_SYS_NAND_ECCBYTES 3 | |
>>>> | Hamming | #define CONFIG_SYS_NAND_ECCPOS \ | |
>>>> | using h/w) | { 1, 2, 3, 4, 5, 6, 7, 8, 9, \ | |
>>>> | | 10, 11, 12 } | |
>>>> | | (for NAND page-size=2048) | |
>>>> | | | |
>>>> +------------+--------------------------------------------+------------------+
>>>> | | | |
>>>> | BCH8_SW | #define CONFIG_NAND_OMAP_ECCSCHEME \ |ti,nand-ecc-opts= |
>>>> | | OMAP_ECC_BCH8_CODE_HW_DETECTION_SW | "bch8" |
>>>> |(8-bit BCH | #define CONFIG_SYS_NAND_ECCBYTES 13 |(without ELM node)|
>>>> | using s/w | #define CONFIG_BCH | |
>>>> |library for | #undef CONFIG_SPL_NAND_AM33XX_BCH | |
>>>> |for ECC | #define CONFIG_SPL_NAND_SIMPLE | |
>>>> | error | #define CONFIG_SYS_NAND_ECCPOS \ | |
>>>> |correction) | {2, 3, 4, 5, 6, 7, 8, 9, 10, \ | |
>>>> | | 11, 12, 13, 14, \ | |
>>>> | | 16, 17, 18, 19, 20, 21, 22, 23, 24, \ | |
>>>> | | 25, 26, 27, 28, \ | |
>>>> | | 30, 31, 32, 33, 34, 35, 36, 37, 38, \ | |
>>>> | | 39, 40, 41, 42, \ | |
>>>> | | 44, 45, 46, 47, 48, 49, 50, 51, 52, \ | |
>>>> | | 53, 54, 55, 56, } | |
>>>> | | (for NAND page-size=2048) | |
>>>> | | #define CONFIG_SYS_NAND_ECCSIZE 512 | |
>>>> | | | |
>>>> +------------+--------------------------------------------+------------------+
>>>> | | | |
>>>> | BCH8_HW | #define CONFIG_NAND_OMAP_ECCSCHEME \ |ti,nand-ecc-opts= |
>>>> | | OMAP_ECC_BCH8_CODE_HW | "bch8" |
>>>> |(8-bit BCH | #define CONFIG_SYS_NAND_ECCBYTES 14 | |
>>>> | using ELM | #define CONFIG_SPL_NAND_AM33XX_BCH |(with ELM node) |
>>>> | h/w engine | #define CONFIG_SYS_NAND_ECCPOS \ |ti,elm-id=<&elm> |
>>>> |for ECC | {2, 3, 4, 5, 6, 7, 8, 9, \ | |
>>>> | error | 10, 11, 12, 13, 14, 15, 16, 17, \ | |
>>>> |correction) | 18, 19, 20, 21, 22, 23, 24, 25, \ | |
>>>> | | 26, 27, 28, 29, 30, 31, 32, 33, \ | |
>>>> | | 34, 35, 36, 37, 38, 39, 40, 41, \ | |
>>>> | | 42, 43, 44, 45, 46, 47, 48, 49, \ | |
>>>> | | 50, 51, 52, 53, 54, 55, 56, 57, } | |
>>>> | | (for NAND page-size=2048) | |
>>>> | | #define CONFIG_SYS_NAND_ECCSIZE 512 | |
>>>> | | | |
>>>> +------------+--------------------------------------------+------------------+
>>>>
>>>> #* In addition following patches need to be pulled for u-boot:
>>>> http://lists.denx.de/pipermail/u-boot/2013-December/168506.html
>>>> http://lists.denx.de/pipermail/u-boot/2013-December/169021.html
>>>>
>>>>
>>>> Test1: flash ubi image from u-boot and boot the kernel
>>>> U-boot> mw 0x82000000 0xff <u-boot.img size aligned to NAND block boundary>
>>>> U-boot> fatload mmc 0 0x82000000 u-boot.img
>>>> U-boot> nand erase <u-boot_offset> <u-boot.img size>
>>>> U-boot> nand write 0x82000000 <u-boot_offset> <u-boot.img size>
>>>> U-boot> setenv bootargs 'console=ttyO0,115200n8 noinitrd mem=256M \
>>>> root=ubi0 rw rootfstype=ubifs ubi.mtd=<mtdpart-of-rootfs>,\
>>>> <page-size> ip=off init=/init'
>>>> U-boot> bootm <kernel_offset>
>>>>
>>>> Test2: update u-boot.img from kernel and re-boot
>>>> Kernel> flash_erase /dev/<mtdpart-of-u-boot> 0 0
>>>> Kernel> nandwrite -s 0 /dev/<mtdpart-of-u-boot> u-boot.img
>>>> Kernel> reboot
>>>>
>>>> Signed-off-by: Pekon Gupta <pekon at ti.com>
>>>> ---
>>>
>>> Though I have done initial level of testing on AM335x as mentioned above,
>>> But will it be possible for you to test and confirm if these set of patches
>>> solve regressions on your OMAP3 boards ?
>>
>> Those patches work fine on our custom AM335x board. So:
>>
>> Tested-by: Stefan Roese <sr at denx.de>
>>
>> Thanks,
>> Stefan
>>
>
>Sorry for this long delay, I'm doing this in my free time and
>sometimes it's difficult to find the time. Those patches also worked
>on my OMAP3 boards so
>
>Tested-by: Enric Balletbo i Serra <eballetbo at gmail.com>
>
>Many thanks for your great work.
>
>Best Regards,
> Enric
>
This patch-set fixes pending regression on OMAP3 platforms and now it
has received Tested-by from:
- Stefan Roese <sr at denx.de> for AM335x platform
- Enric Balletbo i Serra <eballetbo at gmail.com> for OMAP3 platform
So request you to please queue this on priority.
Also, please add following as I missed this while preparing the patches.
Reported-by: Enric Balletbo i Serra <eballetbo at gmail.com>
Thank you.
with regards, pekon
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