On Fri, 11 Apr 2008, Fabio Estevam wrote:
I am using U-boot 1.3.2 with the MX31ADS patches posted by Guennadi Liakhovetski.
I would like to load the zImage kernel from Freescale Linux BSP via TFTP and mount the rootfs via NFS.
You nead a uImage. Just use the same kernel sources and do make uImage instead of zImage.
Does anyone have an example for doing this? I am not sure what address should I use to load the kernel into RAM.
Load it to 0x80800000. You can also try the patch below, which will give you a better default environment, it shall be submitted to the list soon.
Thanks Guennadi --- Guennadi Liakhovetski
[PATCH] mx31ads: Fix default environment
Fix wrong load address in RAM, undefined environment variables, make the default environment more usable.
Signed-off-by: Guennadi Liakhovetski lg@denx.de --- include/configs/mx31ads.h | 25 ++++++++++++++++++------- 1 files changed, 18 insertions(+), 7 deletions(-)
diff --git a/include/configs/mx31ads.h b/include/configs/mx31ads.h index 78e2545..3ad3883 100644 --- a/include/configs/mx31ads.h +++ b/include/configs/mx31ads.h @@ -80,13 +80,24 @@ #define CONFIG_IPADDR 192.168.23.168 #define CONFIG_SERVERIP 192.168.23.2
-#define CONFIG_EXTRA_ENV_SETTINGS \ - "bootargs_base=setenv bootargs console=ttymxc0,115200\0" \ - "bootargs_nfs=setenv bootargs $(bootargs) root=/dev/nfs ip=dhcp nfsroot=$(serverip):$(nfsrootfs),v3,tcp\0" \ - "bootcmd=run bootcmd_net\0" \ - "bootcmd_net=run bootargs_base bootargs_mtd bootargs_nfs; tftpboot 0x80000000 uImage-mx31; bootm\0" \ - "prg_uboot=tftpboot 0x80000000 u-boot-mx31ads.bin; protect off 0xa0000000 0xa001ffff; erase 0xa0000000 0xa001ffff; cp.b 0x80000000 0xa0000000 $(filesize)\0" - +#define CONFIG_EXTRA_ENV_SETTINGS \ + "netdev=eth0\0" \ + "load_addr=0x80800000\0" \ + "uboot_addr=0xa0000000\0" \ + "uboot=mx31ads/u-boot.bin\0" \ + "kernel=mx31ads/uImage\0" \ + "nfsroot=/opt/eldk/arm\0" \ + "bootargs_base=setenv bootargs console=ttymxc0,115200\0" \ + "bootargs_nfs=setenv bootargs ${bootargs} root=/dev/nfs " \ + "ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp\0" \ + "bootcmd=run bootcmd_net\0" \ + "bootcmd_net=run bootargs_base bootargs_nfs; " \ + "tftpboot ${load_addr} ${kernel}; bootm\0" \ + "prg_uboot=tftpboot ${load_addr} ${uboot}; " \ + "protect off ${uboot_addr} 0xa003ffff; " \ + "erase ${uboot_addr} 0xa003ffff; " \ + "cp.b ${load_addr} ${uboot_addr} ${filesize}; " \ + "setenv filesize; saveenv\0"
#define CONFIG_DRIVER_CS8900 1 #define CS8900_BASE 0xb4020300