User:Martix/U-Boot environment
From Openmoko
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<pre> | <pre> | ||
GTA02v5 # setenv bootcmd setenv bootargs \${bootargs} \${mtdparts}\; nand read.e 0x32000000 kernel 0x300000\; bootm 0x32000000 | GTA02v5 # setenv bootcmd setenv bootargs \${bootargs} \${mtdparts}\; nand read.e 0x32000000 kernel 0x300000\; bootm 0x32000000 | ||
− | saveenv | + | GTA02v5 # saveenv |
</pre> | </pre> |
Revision as of 14:24, 27 June 2010
Custom U-Boot environment configuration with multiboot options for microSD.
See also U-boot#Using_usbtty_from_Linux.
cu -l /dev/ttyACM0
You can print your current U-Boot environment.
printenv
See also Bootloader commands#Environment.
My configuration as example.
boot_menu_timeout=300 bootdelay=1 menu_6=Reboot: reset menu_8=Power off: neo1973 power-off mtdids=nor0=physmap-flash,nand0=neo1973-nand mtdparts=mtdparts=physmap-flash:-(nor);neo1973-nand:0x00040000(u-boot),0x00040000(u-boot_env),0x00800000(kernel),0x000a0000(splash),0x00040000(factory),0x0f6a0000(rootfs) quiet=1 sd_image_name=uImage.bin splashimage=nand read.e 0x32000000 splash 0x5000; unzip 0x32000000 0x8800000 0x96000 stderr=usbtty stdin=usbtty stdout=usbtty usbtty=cdc_acm menu_2=Boot from microSD part3 (ext3+ext3): setenv bootargs ${bootargs_base} rootfstype=ext3 root=/dev/mmcblk0p3 rootdelay=5 ${mtdparts} ro; mmcinit; sleep 1; ext2load mmc 1 0x32000000 uImage3.bin; bootm 0x32000000 menu_4=Boot from microSD part6 (ext3+ext3): setenv bootargs ${bootargs_base} rootfstype=ext3 root=/dev/mmcblk0p6 rootdelay=5 ${mtdparts} ro; mmcinit; sleep 1; ext2load mmc 1 0x32000000 uImage6.bin; bootm 0x32000000 menu_3=Boot from microSD part5 (ext3+ext3): setenv bootargs ${bootargs_base} rootfstype=ext3 root=/dev/mmcblk0p5 rootdelay=5 ${mtdparts} ro; mmcinit; sleep 1; ext2load mmc 1 0x32000000 uImage5.bin; bootm 0x32000000 menu_5=Boot from microSD part7 (ext3+ext3): setenv bootargs ${bootargs_base} rootfstype=ext3 root=/dev/mmcblk0p7 rootdelay=5 ${mtdparts} ro; mmcinit; sleep 1; ext2load mmc 1 0x32000000 uImage7.bin; bootm 0x32000000 bootcmd=setenv bootargs ${bootargs} ${mtdparts}; nand read.e 0x32000000 kernel 0x300000; bootm 0x32000000 menu_1=Boot from microSD part2 (ext3+ext3): setenv bootargs ${bootargs_base} rootfstype=ext3 root=/dev/mmcblk0p2 rootdelay=8 debug ${mtdparts} ro; mmcinit; sleep 1; ext2load mmc 1 0x32000000 uImage2.bin; bootm 0x32000000 bootargs_base=rootfstype=ext3 root=/dev/mmcblk0p2 console=ttySAC2,115200 console=tty0 loglevel=8 regular_boot bootargs=rootfstype=jffs2 root=/dev/mtdblock6 console=ttySAC2,115200 console=tty0 loglevel=8 regular_boot partition=nor0,0 mtddevnum=0 mtddevname=nor pcb_rev=0x000 pcf50633_int1=0x80 pcf50633_int2=0x02
You should escape ';', '$' by '\' and replace first occurence of '=' with ' ' on each line.
bootcmd setenv bootargs \${bootargs} \${mtdparts}\; nand read.e 0x32000000 kernel 0x300000\; bootm 0x32000000
Write configuration (line by line) to u-boot envirnment and save it.
GTA02v5 # setenv bootcmd setenv bootargs \${bootargs} \${mtdparts}\; nand read.e 0x32000000 kernel 0x300000\; bootm 0x32000000 GTA02v5 # saveenv