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https://github.com/brain-hackers/u-boot-brain
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d4ea649f17
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>
24 lines
524 B
C
24 lines
524 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
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*
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* From arch/x86/lib/asm-offsets.c
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*
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* This program is used to generate definitions needed by
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* assembly language modules.
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*/
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#include <common.h>
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#include <linux/kbuild.h>
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int main(void)
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{
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DEFINE(GD_BOOT_HART, offsetof(gd_t, arch.boot_hart));
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DEFINE(GD_FIRMWARE_FDT_ADDR, offsetof(gd_t, arch.firmware_fdt_addr));
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#ifndef CONFIG_XIP
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DEFINE(GD_AVAILABLE_HARTS, offsetof(gd_t, arch.available_harts));
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#endif
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return 0;
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}
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