The RouterBOOT bootloader does not care where the kernel lives in the SPI
flash, all that matters is that the kernel is wrapped in the custom yaffs
container as generated by kernel2minor.
This container has a fixed signature as follows:
00000000 00 00 00 01 00 00 00 01 ff ff 6b 65 72 6e 65 6c |..........kernel|
This patch adds mtdsplit support for identifying that signature and
triggering the search for the rootfs. rootfs is expected at EB boundary since
we use wget mtd_find_rootfs_from(). We make no use of the yaffs file size
field because it contains invalid data in the image generated by kernel2minor.
Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
This patch adds supports for the WNR2000v1 board with 4MB flash, and
produces device-specific factory, rootfs, and sysupgrade files for the
WNR2000v1. This board is errorneously claimed as supported on the OpenWRT
wiki as AP81, but AP81 image would not work because of APT81 image
requiring having 8MB of flash, while WNR2000v1 has only 4MB.
The image requires the u-boot bootloader to be modified to fuhry's
bootloader first.
Short specification:
- CPU: Atheros AR9132
- 4x 10/100 Mbps Ethernet, 1x WAN 10/100 Mbps
- 4 MB of Flash
- 32 MB of RAM
- UART header (J1) on board
- 1x button
Factory/Initial flash instructions:
- Set up a TFTP server on your local machine.
- Download the uImage for ar71xx-generic and the rootfs image for
ar71xx-generic-wnr2000 and save in the tftp server root.
- Gain serial access to the router via the UART port (telnetenable over
the network only won't work!).
- Upgrade the u-boot bootloader to fuhry's version by running the
script: http://fuhry.com/b/wnr2000/install-repart.sh
- When the router restarts, interrupt u-boot and gain access to u-boot command line.
- Repartititon the board and flash initial uImage and rootfs as follow.
Commands to type in u-boot:
# tells u-boot that we have a tftp server on 192.168.1.10
setenv serverip 192.168.1.10
# tells u-boot that the router should take the address 192.168.1.1
setenv ipaddr 192.168.1.1
# erase the region from 0x050000-0x3f0000
erase 0xbf050000 +0x3A0000
# loads sqfs.bin on TFTP server, and put it to memory address 0x81000000
tftpboot 0x81000000 sqfs.bin
# it will tell you the length of sqfs.bin in hex, let's say ZZZZZZ
# copy bit by bit 0xZZZZZZ bytes from offset 0x050000
cp.b 0x81000000 0xbf050000 0xZZZZZZ
# same to the uImage.bin, write it right next to sqfs.bin
# again, 0xYYYYYY is the length that tftpboot reports
tftpboot 0x81000000 uImage.bin
cp.b 0x81000000 0xbf2a0000 0xYYYYYY
# We need to tell the kernel what board it is booting into, and where to find the partitions
setenv bootargs "board=WNR2000 console=ttyS0,115200 mtdparts=spi0.0:256k(u-boot)ro,64k(u-boot-env)ro,3712k(firmware),64k(art)ro rootfstype=squashfs,jffs2 noinitrd"
# Tell u-boot where to find the uImage
setenv bootcmd "bootm 0xbf2a0000"
# Tell u-boot to save parameters to the u-boot-env partitions
saveenv
# Reset the board
reset
Tested on:
- WNR2000v1 board.
- Initial flash works.
Known bugs:
- I don't know why factory image doesn't work on initial flash on stock
firmware in u-boot recovery mode while it should.
- Sysupgrade does not yet work, if you do -f it will mess up your
installation (requiring a reinstall of sqfs and uImage).
Signed-off-by: Huan Truong <htruong@tnhh.net>
Support splitting WRGG images, found in some D-Link devices (e.g.
DAP-2695).
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Acked-by: John Crispin <john@phrozen.org>
According to the author the code was added to in preparation for adding
support for a new board. The patch for the board was never send and the
code never really tested.
The edimax header starting with the edimax magic is put in front of the
uImage header. There is no special uImage header used. Means, default
magic and the type field is set to kernel as usual.
Signed-off-by: Mathias Kresin <dev@kresin.me>
edimax parser fix
The return value of the find_header function need to be added to the
uimage_size, otherwise mtd_find_rootfs_from() might search for a rootfs
within a custom header and fails.
Signed-off-by: Mathias Kresin <dev@kresin.me>
So far "kernel" partition didn't contain just a kernel. It also included
Seama header and meta data. This was making kernel update complex and it
wasn't trivial to read kernel size.
Fix it by making "kernel" parition contain just a kernel image.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Seama format has 2 similar headers: container (seal) header and entity
header. The first one has size always set to 0 and doesn't contain MD5
digest.
When dealing with Seama on a flash we deal directly with an entity. You
can see mtdsplit_parse_seama reads from offset 0 and expects entity to
be there. Seama container is used by bootloader / interface only which
extract entity out of it and flash it.
That said we should fix our header struct. This is important as we
calculate possible rootfs offset assuming it may be placed right after
Seama entity. So far calculate offset was always 16B too low.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 48754
Some D-Link routers (e.g. DIR-885L) have NAND and use Seama format. It
means OpenWrt will want to have UBI in Sseama entity and should be able
to detect it.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 48600
Our mtdsplit parsers may want to create partition with name choice based
on partition file system (e.g. SquashFS vs. JFFS2). This patch allows
passing extra argument pointing to variable that will be set properly.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 48598
Rename kernel_size variable as it includes whole entity size, not just a
kernel size. Also update comments to match it and describe better what
are we checking/looking for.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 48480
On most image types the rootfs ends at an erase-block. However, at least
with brnImages this is not the case: while the partitions are aligned
with the erase-block size there is a 12 byte footer at the end of the
partition which must not be touched by any filesystem. This lead to a
rootfs_data partition which was not aligned properly (and thus ended up
being readonly):
0x000000480000-0x00000085a800 : "rootfs_data" (128 KiB EB)
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
SVN-Revision: 48263
This allows splitting EVA images (usually found in fritz devices). The
firmware will be split into a kernel and a separate rootfs partition.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
SVN-Revision: 48262
This adds brnImage (used with the brnboot bootloader) firmware parsing
support. brnboot verifies the integrity of the firmware stored on the
"Code Image" partitions by looking at the 12 byte footer at the very end
of the partition. This footer contains the checksum of the original
brnImage (kernel + rootfs/squashfs) and must not be touched (by our JFFS2
rootfs_data - otherwise the image will not be bootable anymore).
Big thanks to Mathias Kresin for analyzing the brnImage structure and
finding out the information how to keep images valid even when adding a
nested rootfs_data partition.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
SVN-Revision: 48261
If this option is enabled, the FIT image format will be detected and
split by the mtdsplit code. Detection is based upon the FDT magic, which
will trigger the parsing and detection of the rootfs, ending-up in the
creation of the 2 new partitions.
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
SVN-Revision: 44792
We shouldn't read data directly into the header struct, as some devices
(e.g. Edimax) need more bytes due to some extra header.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 44414
Some devices have uImage headers after some extra headers (e.g. Edimax
devices). To support such cases our verify callback function should be
allowed to return header offset, not just a boolean value.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 44412
The board is already supported by OpenWrt. WNR1000v2/WNR1000v2-VC are
pretty much the same as WNR2000v3/WNR612v2, therefore the same
initialization code and flash layout is used.
Signed-off-by: Ștefan Rusu <saltwaterc@gmail.com>
Tested-by: Douglas Fraser <1dsfraser@gmail.com>
SVN-Revision: 44221
There are pretty many OpenWrt patches against mtd subsystem resulting
in a bit of mess and growing maintenance cost.
My idea is to use an extra "mtdsplit" directory with OpenWrt specific
files (including Kconfig).
This is the first step to achieve this. This patch adds a "mtdsplit"
directory with Kconfig and replaces 4 patches with a single one.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 42287
