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Hello,
On 10/16/2012 08:03 PM, John Clark wrote:
>
> Thanks for the URL. I fixed up my code set. which allows for building a
> kernel and ramdisk. However, a couple of items.
>
> 1) the "build" process always seems to ask about a WATCHDOG timer driver.
If you dont need a watchdog, you need to disable the drive.r
> 2) The built kernel crashes right after processing the initramfs image.
Sry i forget to give you these two bash lines. You need to run them in
the trunk directory.
./build_dir/host/u-boot-2011.12/tools/mkimage -A ppc -O linux -T ramdisk
- -C none -a 0x2d000000 -e 0x2d000000 -d
./bin/mpc85xx/openwrt-mpc85xx-rootfs.cpio.gz
/[path]/[to]/[somewhere]/openwrt-mpc85xx-rootfs-uImage
cp -vf ./bin/mpc85xx/openwrt-mpc85xx-rootfs.cpio.gz
/[path]/[to]/[somewhere]/openwrt-mpc85xx-rootfs-initrd
These are the commands to flash the uboot over TFTP an boot the image.
==== U-Boot Bootloader ====
In most cases when you download an image over TFTP you the the filesize
in HEX in the variable: "$filesize"
For the most updates, you dont need to change the FDT file.
=== Boot over TFTP ===
* setenv gatewayip 10.26.254.16
* setenv netmask 255.255.0.0
* setenv ipaddr 10.26.1.6
* setenv serverip 10.26.254.16
* setenv fdtfile stage1/openwrt-mpc85xx-p1020wlan.fdt
* setenv bootfile stage1/openwrt-mpc85xx-uImage
* setenv initfile stage1/openwrt-mpc85xx-rootfs-uImage
* setenv fdtaddr 0c00000
* setenv loadaddr 1000000
* setenv initaddr 2000000
* tftp $fdtaddr $fdtfile;
* tftp $loadaddr $bootfile;
* tftp $initaddr $initfile
* setenv bootargs rw console=$consoledev,$baudrate $otherbootargs
* bootm $loadaddr $initaddr $fdtaddr
=== Flash over TFTP: with Initramfs ===
* bdinfo -> flashstart
* kernel = flashstart + 0x0 + 0x00400000= 0xEC000000
* initfile: flashstart + 0x00400000 + 0x01b00000
* fdt: ab 0x0eff40000
* setenv fdtfile stage1/openwrt-mpc85xx-p1020wlan.fdt
* setenv bootfile stage1/openwrt-mpc85xx-uImage
* setenv initfile stage1/openwrt-mpc85xx-rootfs-uImage
* protect off all
* tftp $loadaddr $bootfile;
* erase 0xEC000000 +0400000
* cp.b $loadaddr 0xEC000000 <Hex length of the image>
* tftp $initaddr $initfile
* erase 0xEC400000 +0x01b00000
* cp.b $loadaddr 0xEC400000 <Hex length of the image>
* tftp $fdtaddr $fdtfile;
* erase eff40000 + <Hex length of the image>
* cp.b $fdtaddr eff40000 <Hex length of the image>
* setenv bootargs rw console=$consoledev,$baudrate $otherbootargs
* bootm 0xEC000000 0xEC400000 eff40000
=== Flash over TFTP: with Jffs2 ===
* bdinfo -> flashstart
* kernel = flashstart + 0x0 = 0xEC000000
* length: 0x400000
* jffs2 = flashstart + X = 0xEE400000 , Länge 0x01b00000
* fdt: flash start addr: 0x0eff40000
* setenv fdtfile stage1/openwrt-mpc85xx-p1020wlan.fdt
* setenv bootfile stage1/openwrt-mpc85xx-uImage
* setenv initfile stage1/root.jffs2-128k
* protect off all
* tftp $loadaddr $bootfile;
* erase 0xEC000000 +0400000
* cp.b $loadaddr 0xEC000000 <Hex length of the image>
* tftp $initaddr $initfile
* erase 0xEE400000 +0x01b00000
* cp.b $initaddr 0xEE400000 <Hex length of the image>
* tftp $fdtaddr $fdtfile;
* erase eff40000 + <Hex length of the image>
* cp.b $fdtaddr eff40000 <Hex length of the image>
* setenv bootargs rw console=$consoledev,$baudrate $otherbootargs
rootfstype=jffs2
* bootm 0xEC000000 - eff40000
=== Boot from Image ===
* setenv bootdelay 3
* setenv hostname femap1_X
* setenv bootcmd "bootm 0xEC000000 0xEC400000 eff40000"
* saveenv
Greetings,
Rainer S.
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