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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>
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2 changed files with 18 additions and 2 deletions
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@ -193,5 +193,9 @@ generated by QEMU, and u-boot.bin should be used as the payload image, like:
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make PLATFORM=sifive/fu540 FW_PAYLOAD_PATH=<u-boot_build_dir>/u-boot.bin
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```
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While the real hardware operates at the 64-bit mode, it's possible for QEMU to
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test the 32-bit OpenSBI firmware. This can be helpful for testing 32-bit SiFive
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specific drivers.
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[U-Boot]: https://gitlab.denx.de/u-boot/u-boot/blob/master/doc/board/sifive/fu540.rst
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[FSBL]: https://github.com/sifive/freedom-u540-c000-bootloader
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@ -21,8 +21,20 @@ platform-runcmd = qemu-system-riscv$(PLATFORM_RISCV_XLEN) -M sifive_u -m 256M \
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FW_TEXT_START=0x80000000
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FW_DYNAMIC=y
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FW_JUMP=y
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FW_JUMP_ADDR=0x80200000
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ifeq ($(PLATFORM_RISCV_XLEN), 32)
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# This needs to be 4MB aligned for 32-bit system
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FW_JUMP_ADDR=0x80400000
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else
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# This needs to be 2MB aligned for 64-bit system
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FW_JUMP_ADDR=0x80200000
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endif
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FW_JUMP_FDT_ADDR=0x88000000
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FW_PAYLOAD=y
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FW_PAYLOAD_OFFSET=0x200000
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ifeq ($(PLATFORM_RISCV_XLEN), 32)
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# This needs to be 4MB aligned for 32-bit system
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FW_PAYLOAD_OFFSET=0x400000
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else
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# This needs to be 2MB aligned for 64-bit system
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FW_PAYLOAD_OFFSET=0x200000
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endif
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FW_PAYLOAD_FDT_ADDR=0x88000000
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