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apm821xx: switch MX60(W)'s recovery images to multi-image method 

In the past, the MX60(W)'s recovery images always had problems
with the size restriction and never really worked without manual
intervention. This patch reworks the initramfs, which allows the
device to ease up on the impossible tight kernel size requirements
for the initramfs image.

This new initramfs can be loaded through the MX60(W) U-boot
in the following way:

=> setenv bootargs console=ttyS0,$baudrate
=> tftpboot $meraki_loadaddr meraki_mx60-initramfs-kernel.bin
   [...]
   Load address: 0x800000
    Loading: ################################################ [...]
    done
   [...]

=> bootm $fileaddr
   \## Booting kernel from Legacy Image at 00800000 ...
    ...

For more information and the latest flashing guide:
please visit the OpenWrt Wiki Page for the MX60(W):
<https://openwrt.org/toh/meraki/mx60#flashing>

Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
(cherry picked from commit 36c19c9f0b)
lede-17.01
Christian Lamparter 2018-12-30 20:38:15 +01:00
parent 459a40fce2
commit 834bd86424
1 changed files with 2 additions and 5 deletions
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7
target/linux/apm821xx/image/Makefile
View File

@ -101,13 +101,10 @@ define Device/mx60
# otherwise the final image will fail to boot. This is set within the # otherwise the final image will fail to boot. This is set within the
# MX60 kernel header definition which is found at # MX60 kernel header definition which is found at
# ./tools/firmware-utils/src/mkmerakifw.c, line 103~ # ./tools/firmware-utils/src/mkmerakifw.c, line 103~
KERNEL_SIZE := 2984k KERNEL_SIZE := 4031k
IMAGE_SIZE := 1021m IMAGE_SIZE := 1021m
KERNEL := kernel-bin | gzip | uImage gzip | MerakiAdd-dtb | MerakiNAND KERNEL := kernel-bin | gzip | uImage gzip | MerakiAdd-dtb | MerakiNAND
KERNEL_INITRAMFS := copy-file $(KDIR)/vmlinux | gzip | uImage gzip | \ KERNEL_INITRAMFS := kernel-bin | gzip | dtb | wndr4700-specialImage gzip
check-size $$(KERNEL_SIZE) | \
MerakiAdd-dtb | pad-to 2047k | MerakiAdd-initramfs | \
MerakiNAND
IMAGE/sysupgrade.tar := sysupgrade-tar IMAGE/sysupgrade.tar := sysupgrade-tar
UBINIZE_OPTS := -E 5 UBINIZE_OPTS := -E 5
endef endef