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authorBin Meng <bmeng.cn@gmail.com>2020-02-18 13:15:59 +0300
committerAnup Patel <anup@brainfault.org>2020-02-19 14:22:07 +0300
commit66fb729a1e46a9a46e809f3b7867fef91477e494 (patch)
tree95d0ab06215dae7c42dc0cab93740dd2643634a5 /docs
parent24c3082ea496d39d406601ee4243b724f4d31aec (diff)
downloadopensbi-66fb729a1e46a9a46e809f3b7867fef91477e494.tar.xz
platform: sifive: fu540: Add 32-bit specific fdt/payload addresses
For testing 32-bit SiFive specific drivers with QEMU riscv32, add 32-bit specific FW_JUMP_FDT_ADDR and FW_PAYLOAD_OFFSET. 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/sifive_fu540.md4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/platform/sifive_fu540.md b/docs/platform/sifive_fu540.md
index 7b14001..065fd4d 100644
--- a/docs/platform/sifive_fu540.md
+++ b/docs/platform/sifive_fu540.md
@@ -193,5 +193,9 @@ generated by QEMU, and u-boot.bin should be used as the payload image, like:
make PLATFORM=sifive/fu540 FW_PAYLOAD_PATH=<u-boot_build_dir>/u-boot.bin
```
+While the real hardware operates at the 64-bit mode, it's possible for QEMU to
+test the 32-bit OpenSBI firmware. This can be helpful for testing 32-bit SiFive
+specific drivers.
+
[U-Boot]: https://gitlab.denx.de/u-boot/u-boot/blob/master/doc/board/sifive/fu540.rst
[FSBL]: https://github.com/sifive/freedom-u540-c000-bootloader