openwrt/target/linux/generic/files/drivers/mtd/mtdsplit/Kconfig
Rafał Miłecki 20b4f77bb6 kernel: add parser finding rootfs after CFE bootfs
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>
2021-01-22 20:14:39 +01:00

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config MTD_SPLIT
def_bool n
help
Generic MTD split support.
config MTD_SPLIT_SUPPORT
def_bool MTD = y
comment "Rootfs partition parsers"
config MTD_SPLIT_SQUASHFS_ROOT
bool "Squashfs based root partition parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
default n
help
This provides a parsing function which allows to detect the
offset and size of the unused portion of a rootfs partition
containing a squashfs.
comment "Firmware partition parsers"
config MTD_SPLIT_BCM_WFI_FW
bool "Broadcom Whole Flash Image parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_CFE_BOOTFS
bool "Parser finding rootfs appended to the CFE bootfs"
depends on MTD_SPLIT_SUPPORT && ARCH_BCM4908
select MTD_SPLIT
help
cferom on BCM4908 (and bcm63xx) uses JFFS2 bootfs partition
for storing kernel, cferam and some device specific files.
There isn't any straight way of storing rootfs so it gets
appended to the JFFS2 bootfs partition. Kernel needs to find
it and run init from it. This parser is responsible for
finding appended rootfs.
config MTD_SPLIT_SEAMA_FW
bool "Seama firmware parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_WRGG_FW
bool "WRGG firmware parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_UIMAGE_FW
bool "uImage based firmware partition parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_FIT_FW
bool "FIT based firmware partition parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_LZMA_FW
bool "LZMA compressed kernel based firmware partition parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_TPLINK_FW
bool "TP-Link firmware parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_TRX_FW
bool "TRX image based firmware partition parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_BRNIMAGE_FW
bool "brnImage (brnboot image) firmware parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_EVA_FW
bool "EVA image based firmware partition parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_MINOR_FW
bool "Mikrotik NOR image based firmware partition parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_JIMAGE_FW
bool "JBOOT Image based firmware partition parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT
config MTD_SPLIT_ELF_FW
bool "ELF loader firmware partition parser"
depends on MTD_SPLIT_SUPPORT
select MTD_SPLIT