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Avoid trying to boot non-existing kernel image in failover case (#1016)

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* Avoid trying to boot non-existing kernel image in fail-over case

The A/B update system automatically switches to the other boot slot when
booting fails. However, in a fresh installation, only boot slot A
exists. If booting fails three times (e.g. if somebody plugs out power
before the slot can be marked as good), then the system switches to boot
slot B which does not contain a kernel image yet. Avoid trying to boot
the non-existing kernel image.

With this change, if slot B is empty U-Boot will restore both slots to 3
attempts and retry booting from slot A on next reboot:

```
Trying to boot slot B, 2 attempts remaining. Loading kernel ...
** Unrecognized filesystem type **
No valid slot found, resetting tries to 3
storing env...
```

Co-authored-by: Pascal Vizeli <pascal.vizeli@syshack.ch>
This commit is contained in:
Stefan Agner 2020-11-24 17:33:44 +01:00 committed by GitHub
parent 8442d2ccfa
commit 5756969be9
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 70 additions and 76 deletions
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19
buildroot-external/board/asus/tinker/uboot-boot.ush
View File

@ -40,16 +40,17 @@ for BOOT_SLOT in "${BOOT_ORDER}"; do
elif test "x${BOOT_SLOT}" = "xA"; then
if test ${BOOT_A_LEFT} -gt 0; then
setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
echo "Found valid slot A, ${BOOT_A_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:2 ${kernel_addr_r} zImage"
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
echo "Trying to boot slot A, ${BOOT_A_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:2 ${kernel_addr_r} zImage; then
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
fi
fi
elif test "x${BOOT_SLOT}" = "xB"; then
if test ${BOOT_B_LEFT} -gt 0; then
setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:4 ${kernel_addr_r} zImage"
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
echo "Trying to boot slot B, ${BOOT_B_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:4 ${kernel_addr_r} zImage"; then
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
fi
fi
done
@ -64,10 +65,8 @@ else
reset
fi
echo "Loading kernel"
run load_kernel
echo " Starting kernel"
echo "Starting kernel"
bootz ${kernel_addr_r} - ${fdt_addr_r}
echo "Fails on boot"
echo "Boot failed, resetting..."
reset

21
buildroot-external/board/hardkernel/odroid-c2/uboot-boot.ush
View File

@ -46,16 +46,18 @@ for BOOT_SLOT in "${BOOT_ORDER}"; do
elif test "x${BOOT_SLOT}" = "xA"; then
if test ${BOOT_A_LEFT} -gt 0; then
setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
echo "Found valid slot A, ${BOOT_A_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:5 ${kernel_addr_r} Image"
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
echo "Trying to boot slot A, ${BOOT_A_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:5 ${kernel_addr_r} Image; then
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
fi
fi
elif test "x${BOOT_SLOT}" = "xB"; then
if test ${BOOT_B_LEFT} -gt 0; then
setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:7 ${kernel_addr_r} Image"
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
echo "Trying to boot slot B, ${BOOT_B_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:7 ${kernel_addr_r} Image; then
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
fi
fi
fi
done
@ -70,12 +72,9 @@ else
reset
fi
echo "Loading kernel"
run load_kernel
echo " Starting kernel"
printenv load_kernel
printenv bootargs
echo "Starting kernel"
booti ${kernel_addr_r} - ${fdt_addr_r}
echo "Fails on boot"
echo "Boot failed, resetting..."
reset

21
buildroot-external/board/hardkernel/odroid-c4/uboot-boot.ush
View File

@ -46,16 +46,18 @@ for BOOT_SLOT in "${BOOT_ORDER}"; do
elif test "x${BOOT_SLOT}" = "xA"; then
if test ${BOOT_A_LEFT} -gt 0; then
setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
echo "Found valid slot A, ${BOOT_A_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:5 ${kernel_addr_r} Image"
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
echo "Trying to boot slot A, ${BOOT_A_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:5 ${kernel_addr_r} Image; then
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
fi
fi
elif test "x${BOOT_SLOT}" = "xB"; then
if test ${BOOT_B_LEFT} -gt 0; then
setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:7 ${kernel_addr_r} Image"
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
echo "Trying to boot slot B, ${BOOT_B_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:7 ${kernel_addr_r} Image; then
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
fi
fi
fi
done
@ -70,12 +72,9 @@ else
reset
fi
echo "Loading kernel"
run load_kernel
echo " Starting kernel"
printenv load_kernel
printenv bootargs
echo "Starting kernel"
booti ${kernel_addr_r} - ${fdt_addr_r}
echo "Fails on boot"
echo "Boot failed, resetting..."
reset

21
buildroot-external/board/hardkernel/odroid-n2/uboot-boot.ush
View File

@ -50,16 +50,18 @@ for BOOT_SLOT in "${BOOT_ORDER}"; do
elif test "x${BOOT_SLOT}" = "xA"; then
if test ${BOOT_A_LEFT} -gt 0; then
setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
echo "Found valid slot A, ${BOOT_A_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:5 ${kernel_addr_r} Image"
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
echo "Trying to boot slot A, ${BOOT_A_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:5 ${kernel_addr_r} Image; then
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
fi
fi
elif test "x${BOOT_SLOT}" = "xB"; then
if test ${BOOT_B_LEFT} -gt 0; then
setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:7 ${kernel_addr_r} Image"
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
echo "Trying to boot slot B, ${BOOT_B_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:7 ${kernel_addr_r} Image; then
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
fi
fi
fi
done
@ -74,12 +76,9 @@ else
reset
fi
echo "Loading kernel"
run load_kernel
echo " Starting kernel"
printenv load_kernel
printenv bootargs
echo "Starting kernel"
booti ${kernel_addr_r} - ${fdt_addr_r}
echo "Fails on boot"
echo "Boot failed, resetting..."
reset

24
buildroot-external/board/hardkernel/odroid-xu4/uboot-boot.ush
View File

@ -50,16 +50,18 @@ for BOOT_SLOT in "${BOOT_ORDER}"; do
elif test "x${BOOT_SLOT}" = "xA"; then
if test ${BOOT_A_LEFT} -gt 0; then
setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
echo "Found valid slot A, ${BOOT_A_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:5 ${kernel_addr_r} zImage"
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
echo "Trying to boot slot A, ${BOOT_A_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:5 ${kernel_addr_r} zImage; then
setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
fi
fi
elif test "x${BOOT_SLOT}" = "xB"; then
if test ${BOOT_B_LEFT} -gt 0; then
setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining"
setenv load_kernel "ext4load mmc ${devnum}:7 ${kernel_addr_r} zImage"
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
echo "Trying to boot slot B, ${BOOT_B_LEFT} attempts remaining. Loading kernel ..."
if ext4load mmc ${devnum}:7 ${kernel_addr_r} zImage; then
setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
fi
fi
fi
done
@ -74,13 +76,9 @@ else
reset
fi
echo "Loading kernel"
run load_kernel
echo " Starting kernel"
printenv load_kernel
printenv bootargs
dmc ${ddr_freq}
bootz ${kernel_addr_r} - ${fdt_addr_r}
echo "Starting kernel"
booti ${kernel_addr_r} - ${fdt_addr_r}
echo "Fails on boot"
echo "Boot failed, resetting..."
reset

20
buildroot-external/board/raspberrypi/uboot-boot.ush
View File

@ -37,16 +37,18 @@ for BOOT_SLOT in "${BOOT_ORDER}"; do
elif test "x${BOOT_SLOT}" = "xA"; then
if test ${BOOT_A_LEFT} -gt 0; then
setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
echo "Found valid slot A, ${BOOT_A_LEFT} attempts remaining"
setenv load_kernel "ext4load ${devtype} ${devnum}:2 ${kernel_addr_r} zImage"
setenv bootargs "${bootargs_hassos} ${bootargs_rpi} ${bootargs_a} rauc.slot=A"
echo "Trying to boot slot A, ${BOOT_A_LEFT} attempts remaining. Loading kernel ..."
if ext4load ${devtype} ${devnum}:2 ${kernel_addr_r} zImage; then
setenv bootargs "${bootargs_hassos} ${bootargs_rpi} ${bootargs_a} rauc.slot=A"
fi
fi
elif test "x${BOOT_SLOT}" = "xB"; then
if test ${BOOT_B_LEFT} -gt 0; then
setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining"
setenv load_kernel "ext4load ${devtype} ${devnum}:4 ${kernel_addr_r} zImage"
setenv bootargs "${bootargs_hassos} ${bootargs_rpi} ${bootargs_b} rauc.slot=B"
echo "Trying to boot slot B, ${BOOT_B_LEFT} attempts remaining. Loading kernel ..."
if ext4load ${devtype} ${devnum}:4 ${kernel_addr_r} zImage"; then
setenv bootargs "${bootargs_hassos} ${bootargs_rpi} ${bootargs_b} rauc.slot=B"
fi
fi
fi
done
@ -62,10 +64,8 @@ else
reset
fi
echo "Loading kernel"
run load_kernel
echo " Starting kernel"
echo "Starting kernel"
bootz ${kernel_addr_r} - ${fdt_org}
echo "Fails on boot"
echo "Boot failed, resetting..."
reset

20
buildroot-external/board/raspberrypi/uboot-boot64.ush
View File

@ -37,16 +37,18 @@ for BOOT_SLOT in "${BOOT_ORDER}"; do
elif test "x${BOOT_SLOT}" = "xA"; then
if test ${BOOT_A_LEFT} -gt 0; then
setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
echo "Found valid slot A, ${BOOT_A_LEFT} attempts remaining"
setenv load_kernel "ext4load ${devtype} ${devnum}:2 ${kernel_addr_r} Image"
setenv bootargs "${bootargs_hassos} ${bootargs_rpi} ${bootargs_a} rauc.slot=A"
echo "Trying to boot slot A, ${BOOT_A_LEFT} attempts remaining. Loading kernel ..."
if ext4load ${devtype} ${devnum}:2 ${kernel_addr_r} Image; then
setenv bootargs "${bootargs_hassos} ${bootargs_rpi} ${bootargs_a} rauc.slot=A"
fi
fi
elif test "x${BOOT_SLOT}" = "xB"; then
if test ${BOOT_B_LEFT} -gt 0; then
setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining"
setenv load_kernel "ext4load ${devtype} ${devnum}:4 ${kernel_addr_r} Image"
setenv bootargs "${bootargs_hassos} ${bootargs_rpi} ${bootargs_b} rauc.slot=B"
echo "Trying to boot slot B, ${BOOT_B_LEFT} attempts remaining. Loading kernel ..."
if ext4load ${devtype} ${devnum}:4 ${kernel_addr_r} Image"; then
setenv bootargs "${bootargs_hassos} ${bootargs_rpi} ${bootargs_b} rauc.slot=B"
fi
fi
fi
done
@ -62,10 +64,8 @@ else
reset
fi
echo "Loading kernel"
run load_kernel
echo " Starting kernel"
echo "Starting kernel"
booti ${kernel_addr_r} - ${fdt_org}
echo "Fails on boot"
echo "Boot failed, resetting..."
reset