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docs: Add documenation for QEMU platforms

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This patch adds documentation for qemu/virt and
qemu/sifive_u platform supports.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Anup Patel 2018-12-28 14:21:57 +05:30 • committed by Anup Patel
parent 5688b4d8fc
commit d0bbbbb8fd
2 changed files with 101 additions and 0 deletions
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42
docs/platform/qemu_sifive_u.md Normal file
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QEMU SiFive Unleashed Machine
=============================
The **QEMU SiFive Unleashed Machine** is an emulation of
SiFive Unleashed platform.
To build platform specific library and firmwares, provide
`PLATFORM=qemu/sifive_u` parameter to top-level make.
Platform Options
----------------
We don't have any platform specific options for this platform.
Try on QEMU RISC-V 64bit
------------------------
**No Payload**
*Build*:
```
make PLATFORM=qemu/virt
```
*Run*:
```
qemu-system-riscv64 -M sifive_u -m 256M -display none -serial stdio -kernel build/platform/qemu/sifive_u/firmware/fw_payload.elf
```
**U-Boot Payload**
*Note*: We assume that U-Boot is compiled using `qemu-riscv64_smode_defconfig`.
*Build*:
```
make PLATFORM=qemu/virt FW_PAYLOAD_PATH=<uboot_build_directory>/u-boot.bin
```
*Run*:
```
qemu-system-riscv64 -M sifive_u -m 256M -display none -serial stdio -kernel build/platform/qemu/sifive_u/firmware/fw_payload.elf
or
qemu-system-riscv64 -M sifive_u -m 256M -display none -serial stdio -kernel build/platform/qemu/sifive_u/firmware/fw_jump.elf -device loader,file=<uboot_build_directory>/u-boot.bin,addr=0x80200000
```

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docs/platform/qemu_virt.md Normal file
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QEMU RISC-V Virt Machine
========================
The **QEMU RISC-V Virt Machine** is virtual platform created
for RISC-V software development. It is also referred to as
QEMU RISC-V VirtIO machine because it uses VirtIO devices
for network, storage, and other types of IO.
To build platform specific library and firmwares, provide
`PLATFORM=qemu/virt` parameter to top-level make.
Platform Options
----------------
We don't have any platform specific options for this platform.
Try on QEMU RISC-V 64bit
------------------------
**No Payload**
*Build*:
```
make PLATFORM=qemu/virt
```
*Run*:
```
qemu-system-riscv64 -M virt -m 256M -display none -serial stdio -kernel build/platform/qemu/virt/firmware/fw_payload.elf
```
**U-Boot Payload**
*Note*: We assume that U-Boot is compiled using `qemu-riscv64_smode_defconfig`.
*Build*:
```
make PLATFORM=qemu/virt FW_PAYLOAD_PATH=<uboot_build_directory>/u-boot.bin
```
*Run*:
```
qemu-system-riscv64 -M virt -m 256M -display none -serial stdio -kernel build/platform/qemu/virt/firmware/fw_payload.elf
or
qemu-system-riscv64 -M virt -m 256M -display none -serial stdio -kernel build/platform/qemu/virt/firmware/fw_jump.elf -device loader,file=<uboot_build_directory>/u-boot.bin,addr=0x80200000
```
**Linux Payload**
*Note*: We assume that Linux is compiled using `defconfig`.
*Build*:
```
make PLATFORM=qemu/virt FW_PAYLOAD_PATH=<linux_build_directory>/arch/riscv/boot/Image
```
*Run*:
```
qemu-system-riscv64 -M virt -m 256M -display none -serial stdio -kernel build/platform/qemu/virt/firmware/fw_payload.elf -drive file=<path_to_linux_rootfs>,format=raw,id=hd0 -device virtio-blk-device,drive=hd0 -append "root=/dev/vda rw console=ttyS0"
or
qemu-system-riscv64 -M virt -m 256M -display none -serial stdio -kernel build/platform/qemu/virt/firmware/fw_jump.elf -device loader,file=<linux_build_directory>/arch/riscv/boot/Image,addr=0x80200000 -drive file=<path_to_linux_rootfs>,format=raw,id=hd0 -device virtio-blk-device,drive=hd0 -append "root=/dev/vda rw console=ttyS0"
```