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kernel: add parser finding rootfs after CFE bootfs

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It's required for BCM4908. It cannot use "bcm-wfi-fw" parser because
that one requires *two* JFFS2 partitions which is untested / unsupported
on the BCM4908 architecture. With a single JFFS2 partition "bcm-wfi-fw"
parser will:
1. Fail to find "vmlinux.lz" as it doesn't follow "1-openwrt" file
2. Create partitions that don't precisely match bootfs layout

The new parser is described in details in the MTD_SPLIT_CFE_BOOTFS
symbol help message.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki
2021-01-20 16:49:26 +01:00
parent 6ba3a0e889
commit 20b4f77bb6
4 changed files with 101 additions and 1 deletions
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3
target/linux/bcm4908/config-5.4
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@@ -138,7 +138,8 @@ CONFIG_MTD_NAND_BRCMNAND=y
CONFIG_MTD_NAND_CORE=y
CONFIG_MTD_NAND_ECC_SW_HAMMING=y
CONFIG_MTD_RAW_NAND=y
CONFIG_MTD_SPLIT_BCM_WFI_FW=y
CONFIG_MTD_SPLIT_CFE_BOOTFS=y
# CONFIG_MTD_SPLIT_SQUASHFS_ROOT is not set
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_BEB_LIMIT=20
CONFIG_MTD_UBI_BLOCK=y