Armadilloフォーラム

setenv ne_main_boot echo nemainboot
setenv bootstate boot_state
setenv bootstatepart 1
setenv loadboot_state fatload mmc ${mmcdev}:${bootstatepart} ${loadaddr} ${bootstate};
setenv recoverypart 3
 
# recovery boot memory map (uboot text start from 0x9D80 0000)
#| start addr  | usage  | size |
#|-------------+--------+------|
#| 0x8800 0000 | uImage | 120M |
#| 0x8F00 0000 | fdt    | 2M   |
#| 0x8F20 0000 | initrd | 14M  |(unused)
 
setenv setrecovery echo Setting up recovery env... \; setenv mmcpart ${recoverypart} \; setenv image ${image}.recovery \; setenv fdt_addr 0x8F000000 \;setenv fdt_file ${fdt_file}.recovery \; setenv initrd_addr 0x8F200000 \; setenv loadaddr 0x88000000 ;
 
if run loadboot_state; then
 echo Compare boot_state...
else
 echo WARNNING: boot_state file not found. Generating boot_state file...
 # 0x2c302c30  means "0,0," in hex
 mw.l ${loadaddr} 0x2c302c30
 #TODO: calc MD5 checksum in ascii and write boot_state
 fatwrite mmc ${mmcdev}:${bootstatepart} ${loadaddr} ${bootstate} 0x4
fi
 
#GET value of try
kernel_try=1
mw ${fdt_addr} 0x30 #write "0 (=0x30)" for compare
if cmp.b ${fdt_addr} ${loadaddr} 1; then
 kernel_try=0
fi
 
#GET value of success
kernel_success=1
mw ${fdt_addr} 0x30 #write "0 (=0x30)" for compare
setexpr success_addr ${loadaddr} + 2
if cmp.b ${fdt_addr} ${success_addr} 1; then
 kernel_success=0
fi
 
echo DEBUG:KERNEL_TRY is ${kernel_try}
echo DEBUG:KERNEL_SUCCESS is ${kernel_success}
 
# Selection MAIN or RECOVERY kernel image
#| try | success | stete                                     |
#|-----+---------+-------------------------------------------|
#|   0 |       0 | First time boot; try=1,   main boot       |
#|   1 |       1 | Successfully boot before; main boot       |
#|   1 |       0 | Failed boot before;       recovery boot   |
#|   0 |       1 | Invalid "boot_state";     recovery boot   |
 
if itest ${kernel_success} == ${kernel_try}; then
 if itest ${kernel_try} == 0; then
  echo First time boot after update
  run loadboot_state
  mw.b ${loadaddr} 0x31 # 0x31 means ascii "1"
  fatwrite mmc ${mmcdev}:${bootstatepart} ${loadaddr} ${bootstate} ${filesize}
 fi
 echo *MAIN KERNEL BOOT*
 # MAIN KERNEL BOOT routine has fall through below.
else
 echo *RECOVERY KERNEL BOOT*
#TODO: increace fdtaddr and initrdaddr before loading recovery (big) kernel
 run setrecovery
fi
 
#MAIN BOOTCMD
mmc dev ${mmcdev};
if mmc rescan; then
 if run loadimage; then
   run mmcboot;
 fi
   echo WARNNING: MAIN KERNEL NOT FOUND
   echo *RECOVERY KERNEL BOOT*
   run setrecovery
fi
 
mmc dev ${mmcdev};
if mmc rescan; then
 if run loadimage; then
   run mmcboot;
 fi
fi
 
echo "No kernel found"