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Message-Id: <20231016092006.3347632-1-songshuaishuai@tinylab.org>
Date: Mon, 16 Oct 2023 17:20:04 +0800
From: Song Shuai <songshuaishuai@...ylab.org>
To: paul.walmsley@...ive.com, palmer@...belt.com,
aou@...s.berkeley.edu, lihuafei1@...wei.com,
conor.dooley@...rochip.com, liaochang1@...wei.com,
guoren@...nel.org, ajones@...tanamicro.com, alexghiti@...osinc.com,
evan@...osinc.com, sunilvl@...tanamicro.com,
xianting.tian@...ux.alibaba.com, samitolvanen@...gle.com,
masahiroy@...nel.org, apatel@...tanamicro.com, jszhang@...nel.org,
duwe@...e.de, eric.devolder@...cle.com,
emil.renner.berthing@...onical.com
Cc: linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
Song Shuai <songshuaishuai@...ylab.org>
Subject: [PATCH V2 0/2] riscv: kexec_file: Support loading Image binary file
Changes since V1:
https://lore.kernel.org/linux-riscv/20230914020044.1397356-1-songshuaishuai@tinylab.org/
- Patch1: fix the build error due to the missing functions in machine_kexec_file.c
- Patch2: use FIELD_GET() to get the flags's endianness as Emil proposed
- Cover: update the kexec-tools link as this one[2] which is based on horms/kexec-tools main branch
This series makes the kexec_file_load() syscall support to load Image binary file.
At the same time, corresponding support for kexec-tools had been pushed to my repo[2].
Now, we can leverage that kexec-tools and this series to use the
kexec_load() or kexec_file_load() syscall to boot both vmlinux
and Image file, as seen in these combo tests:
```
1. kexec -l vmlinux [other options] // or boot paniced kernel with -p
2. kexec -l Image
3. kexec -s -l vmlinux
4. kexec -s -l Image
```
Though all of the aforementioned tests had been passed in my RV64 Qemu-virt,
it should be noted that tests 3 and 4 should be the emphasis for the current series.
~~[1]: https://github.com/sugarfillet/kexec-tools/commits/rv-Image~~
[2]: https://github.com/sugarfillet/kexec-tools/commits/main_rv
Song Shuai (2):
riscv: kexec_file: Split the loading of kernel and others
riscv: kexec_file: Support loading Image binary file
arch/riscv/include/asm/kexec.h | 6 +
arch/riscv/kernel/Makefile | 2 +-
arch/riscv/kernel/elf_kexec.c | 469 -------------------------
arch/riscv/kernel/kexec_elf.c | 147 ++++++++
arch/riscv/kernel/kexec_image.c | 98 ++++++
arch/riscv/kernel/machine_kexec_file.c | 344 ++++++++++++++++++
6 files changed, 596 insertions(+), 470 deletions(-)
delete mode 100644 arch/riscv/kernel/elf_kexec.c
create mode 100644 arch/riscv/kernel/kexec_elf.c
create mode 100644 arch/riscv/kernel/kexec_image.c
--
2.20.1
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