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https://github.com/brain-hackers/u-boot-brain
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In RISC-V, M-mode software can reserve physical memory regions by setting appropriate physical memory protection (PMP) csr. As the PMP csr are accessible only in M-mode, S-mode U-Boot can not read this configuration directly. However, M-mode software can pass this information via reserved-memory node in device tree so that S-mode software can access this information. This patch provides a framework to copy to the reserved-memory node from one DT to another. This will be used to update the DT used by U-Boot and the DT passed to the next stage OS. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com> |
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.. | ||
andes_plic.c | ||
andes_plmt.c | ||
asm-offsets.c | ||
boot.c | ||
bootm.c | ||
cache.c | ||
crt0_riscv_efi.S | ||
elf_riscv32_efi.lds | ||
elf_riscv64_efi.lds | ||
fdt_fixup.c | ||
image.c | ||
interrupts.c | ||
Makefile | ||
mkimage_fit_opensbi.sh | ||
rdtime.c | ||
reloc_riscv_efi.c | ||
reset.c | ||
sbi_ipi.c | ||
sbi.c | ||
setjmp.S | ||
sifive_clint.c | ||
smp.c | ||
spl.c |