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Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/mainboard/emulation/qemu-power9.md | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/mainboard/emulation/qemu-power9.md b/Documentation/mainboard/emulation/qemu-power9.md new file mode 100644 index 0000000000..3e2c75f9f4 --- /dev/null +++ b/Documentation/mainboard/emulation/qemu-power9.md @@ -0,0 +1,30 @@ +# QEMU PPC64 emulator +This page describes how to build and run coreboot for QEMU/PPC64. +You can configure ELF payload via `make menuconfig` (make sure "ROM chip size" +is large enough). + +## Running coreboot in QEMU +```bash +qemu-system-ppc64 -M powernv,hb-mode=on \ + -cpu power9 \ + -bios build/coreboot.rom \ + -drive file=build/coreboot.rom,if=mtd \ + -serial stdio \ + -display none +``` + +- The default CPU in QEMU for AArch64 is a 604. You specify a suitable +PowerPC CPU via `-cpu power9`. +- By default Hostboot mode is off and it needs to be turned on to run coreboot +as a firmware rather than like an OS. +- `-bios` specifies initial program (bootloader should suffice, but whole image +works fine too). +- `-drive` specifies image for emulated flash device. + +## Building coreboot +```bash +make defconfig KBUILD_DEFCONFIG=configs/config.emulation_qemu_power9 +make +``` + +This builds coreboot with no payload. |