diff options
| author | Bin Meng <bmeng.cn@gmail.com> | 2019-09-23 05:49:15 -0700 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2019-09-25 10:34:54 +0530 |
| commit | 8853758268d253f2c087fdba2c7f3efbacfec1ec (patch) | |
| tree | b36c44d260d2a1688e9cabb7697750b76d2a20ee /docs | |
| parent | 98ee15ca3adcf7bc22695897cd63a3ce8c5c53ff (diff) | |
docs: platform: Update descriptions for qemu/sifive_u support
With QEMU v4.2 release that has improved the emulation fidelity
of 'sifive_u' machine, OpenSBI v0.4 / U-Boot v2019.10-rc1 / Linux
kernel v5.3-rc2 images built for the SiFive HiFive Unleashed board
can be used out of the box without any special hack.
Update our documents to mention 'qemu/sifive_u' platform should
only be used with QEMU v4.1 or before, and it will be dropped
sometime in the future release.
Going forward, 'sifive/fu540' platform can be used on both real
hardware and QEMU v4.2+ 'sifive_u' machine.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/platform/qemu_sifive_u.md | 8 | ||||
| -rw-r--r-- | docs/platform/sifive_fu540.md | 12 |
2 files changed, 20 insertions, 0 deletions
diff --git a/docs/platform/qemu_sifive_u.md b/docs/platform/qemu_sifive_u.md index 48b30e4..b5c4f0e 100644 --- a/docs/platform/qemu_sifive_u.md +++ b/docs/platform/qemu_sifive_u.md @@ -7,6 +7,14 @@ platform. To build this platform specific library and firmwares, provide the *PLATFORM=qemu/sifive_u* parameter to the top level `make` command line. +Note with QEMU v4.2 release, the QEMU *sifive_u* machine has been updated to +closely match the SiFive HiFive Unleashed hardware and can therefore run the +same firmware as what gets loaded onto the board, and OpenSBI's *qemu/sifive_u* +platform should only be used with QEMU v4.1 release or before. + +The special *qemu/sifive_u* platform support will be dropped in the future +OpenSBI release. + Platform Options ---------------- diff --git a/docs/platform/sifive_fu540.md b/docs/platform/sifive_fu540.md index 6df904d..9fb45d6 100644 --- a/docs/platform/sifive_fu540.md +++ b/docs/platform/sifive_fu540.md @@ -4,6 +4,9 @@ The FU540-C000 is the world’s first 4+1 64-bit RISC-V SoC from SiFive. The HiFive Unleashed development platform is based on FU540-C000 and capable of running Linux. +With QEMU v4.2 or above release, the 'sifive_u' machine can be used to test +OpenSBI image built for the real hardware as well. + To build platform specific library and firmwares, provide the *PLATFORM=sifive/fu540* parameter to the top level `make` command. @@ -201,3 +204,12 @@ At U-Boot prompt execute the following boot command to boot Linux. ``` bootm ${kernel_addr_r} - ${fdt_addr_r} ``` + +QEMU Specific Instructions +-------------------------- +If you want to test OpenSBI with QEMU 'sifive_u' machine, please follow the +same instructions above, with the exception of not passing FW_PAYLOAD_FDT_PATH. + +This is because QEMU generates a device tree blob on the fly based on the +command line parameters and it's compatible with the one used in the upstream +Linux kernel. |