[OpenWrt-Devel] Issues with MTD parsing in absence of rootfs - Proposed patch, advice please

[Stephen Parry]

Thanks, that's close to what I've come up with myself. I'll test this evening. If it works can we commit the patch please?

On 29 October 2014 06:23:32 GMT+00:00, "Rafał Miłecki" <zajec5 at gmail.com> wrote:
>On 29 October 2014 02:17, Stephen G. Parry <sgparry at mainscreen.com>
>wrote:
>> As some of you will be aware I have been working on an initramfs only
>> image with no lzma-loader, used to kexec main kernel from external
>> storage on a bcrm47xx based router (Netgear WNR3500L v1). I have
>> encountered two unpleasant issues:
>>
>> 1. The parsing routines in bcm47xxpart.c do not currently cope with a
>> non-existent rootfs, i.e. one where the trx header shows zero
>relative
>> offset after the main linux image. the result is thus:
>>
>> [    1.040000] 7 bcm47xxpart partitions found on MTD device
>bcm47xxsflash
>> [    1.050000] Creating 7 MTD partitions on "bcm47xxsflash":
>> [    1.060000] 0x000000000000-0x000000040000 : "boot"
>> [    1.060000] 0x000000040000-0x0000007d0000 : "firmware"
>> [    1.070000] 0x00000004001c-0x000000040000 : "linux"
>> [    1.080000] mtd: partition "linux" must either start or end on
>erase
>> block boundary or be smaller than an erase block -- forcing read-only
>> [    1.090000] 0x000000040000-0x0000007d0000 : "rootfs"
>> [    1.100000] mtd: device 3 (rootfs) set to be root filesystem
>> [    1.110000] mtdsplit: no squashfs found in "rootfs"
>> [    1.110000] mtdsplit: no squashfs found in "bcm47xxsflash"
>> [    1.120000] 0x0000007d0000-0x0000007e0000 : "POT"
>> [    1.130000] 0x0000007e0000-0x0000007f0000 : "board_data"
>> [    1.130000] 0x0000007f0000-0x000000800000 : "nvram"
>
>Try this:
>http://git.infradead.org/l2-mtd.git/commitdiff/a1ff7d64c5361c15bac653708a679de13506d283

-- 
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