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docs: add example of building the Linux kernel

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Slightly expand the QEMU docs to explain how to build the flat Linux kernel image.

Signed-off-by: Tim Hutt <tdhutt@gmail.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Tim Hutt
2024-10-08 10:49:19 +01:00
committed by Anup Patel
parent 0171cfcc70
commit 701948bdec
1 changed files with 8 additions and 1 deletions
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9
docs/platform/qemu_virt.md
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@@ -56,7 +56,14 @@ qemu-system-riscv64 -M virt -m 256M -nographic \
**Linux Kernel Payload**
Note: We assume that the Linux kernel is compiled using
*arch/riscv/configs/defconfig*.
*arch/riscv/configs/defconfig*. The kernel must be a flattened image (a file
called `Image`) rather than an ELF (`vmlinux`).
Example of building a Linux kernel:
```
make ARCH=riscv CROSS_COMPILE=riscv64-linux- defconfig
make ARCH=riscv CROSS_COMPILE=riscv64-linux- Image
```
Build:
```