[RFC PATCH v2 0/1] Introduce mtd splitter for ELF kernel loader
sander at svanheule.net
Sat Jul 11 09:45:38 EDT 2020
Currently, there appears to be no mtd splitter that works with a
firmware partition starting with an ELF kernel loader. Devices using a
loader must provide manual splits, possibly increasing the maintenance
effort for these devices.
This splitter may for example be used with the TP-Link CPE devices that
use a plain ELF loader or OKLI loader, but currently require a fixed
partition layout. Some examples are CPE510 and CPE610 devices.
Support is provided for 32-bit and 64-bit platforms, as well as
different rootfs types. This splitter has been tested on the TP-Link
EAP245v1 (32-bit platform with squashfs root).
Changes since v1:
- Fix whitespace issues
- Rename elf_header.class* to elf_header.elf*
- Use stack for elf header instead of vmalloc
mtdsplit_tplink uses a much larger header on the stack, so using
vmalloc doesn't seem justified.
Sander Vanheule (1):
kernel: mtdsplit: support ELF loader splitting
.../files/drivers/mtd/mtdsplit/Kconfig | 5 +
.../files/drivers/mtd/mtdsplit/Makefile | 1 +
.../files/drivers/mtd/mtdsplit/mtdsplit_elf.c | 196 ++++++++++++++++++
3 files changed, 202 insertions(+)
create mode 100644 target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_elf.c
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