[OpenWrt-Devel] [PATCH] uboot-lantiq: fix P-2812HNU-F1/3 package dependency

[Daniel Schwierzeck]

2015-01-27 18:41 GMT+01:00 Ben Mulvihill <ben.mulvihill at gmail.com>:
> Hi Antti,
>
> (Note that the diffs in this message are for information. They are not
> patches submitted for merging - not at this stage anyway.)
>
>> I tried and it seems the ram version
>> (openwrt-lantiq-p2812hnufx_ram-u-boot.asc) builds and boots properly.
>>
>> The openwrt-lantiq-p2812hnufx_nandspl-u-boot.img indeed does not boot
>> correctly. Is anyone working on fixing it? (Apparently conversion to
>> TPL is needed)
>
> I am working on the BT Home Hub 3A at the moment (arx100, nand-based
> board), and have also found that asc images build correctly but
> nandspl images do not.
>
> There seem to a number of problems. For a start some of the make
> targets seem to be missing. The following fixed that for arx100,
> and I think that a similar fix is necessary for danube and vrx200
> too.

the NAND boot does not work yet. I was not able to make it work with a
SPL only because the BootROM only reads the first page. The Lantiq UGW
U-Boot uses a very small pre-loader which loads another pre-loader and
fits in the first page. Thus we need to convert to SPL/TPL support
from mainline U-Boot. But I hadn't enough time yet to work on it.

>
> --- a/arch/mips/cpu/mips32/arx100/config.mk     2015-01-27 12:33:32.000000000 +0100
> +++ b/arch/mips/cpu/mips32/arx100/config.mk     2015-01-27 18:07:37.000000000 +0100
> @@ -27,4 +27,9 @@ ALL-y += $(obj)u-boot.ltq.norspl
>  ALL-$(CONFIG_SPL_LZO_SUPPORT) += $(obj)u-boot.ltq.lzo.norspl
>  ALL-$(CONFIG_SPL_LZMA_SUPPORT) += $(obj)u-boot.ltq.lzma.norspl
>  endif
> +ifdef CONFIG_SYS_BOOT_NANDSPL
> +ALL-y += $(obj)u-boot.ltq.nandspl
> +ALL-$(CONFIG_SPL_LZO_SUPPORT) += $(obj)u-boot.ltq.lzo.nandspl
> +ALL-$(CONFIG_SPL_LZMA_SUPPORT) += $(obj)u-boot.ltq.lzma.nandspl
> +endif
>  endif
>
>
> Then the ebu configuration word needs to be set in the nandspl
> image, as it is for norspl. Once again, the following fixed that
> for arx100, and I think something similar will be required for danube
> and vrx200.

actually the BootROM should correctly configure the EBU to be able to
read at least the first page from NAND flash. The XWAY_EBU_BOOTCFG is
only used for parallel NOR to setup various command timings and
delays.

>
> --- a/arch/mips/include/asm/arch-arx100/config.h        2015-01-27 18:12:32.000000000 +0100
> +++ b/arch/mips/include/asm/arch-arx100/config.h        2015-01-27 18:13:02.000000000 +0100
> @@ -174,6 +174,10 @@
>  #define CONFIG_XWAY_SWAP_BYTES
>  #endif
>
> +#if defined(CONFIG_SYS_BOOT_NAND) || defined(CONFIG_SYS_BOOT_NANDSPL)
> +#define CONFIG_SYS_XWAY_EBU_BOOTCFG    0x688C688C
> +#endif
> +
>  #define        CONFIG_SYS_MONITOR_BASE         CONFIG_SYS_TEXT_BASE
>
>  #endif /* __ARX100_CONFIG_H__ */
>
> Finally the ltq-boot-image tool adds a couple of download header to the
> final image which I don't think should be there.
>
> Daniel, does all the above make sense?
>
> That said, even after making those changes my nandspl images still
> don't work.
>
> Ben
>
>
>
>



-- 
- Daniel
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