f813b84486
Fix a bug introduced by:
820dcfceb3
riscv: Simplify payload handling
Put fdt into a1 correctly.
Change-Id: I0dea7b88fde9d9a7365cb366917747d8110b9159
Signed-off-by: Philipp Hug <philipp@hug.cx>
Reviewed-on: https://review.coreboot.org/c/31287
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2016 Google Inc
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* Copyright (C) 2018 HardenedLinux
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* Copyright (C) 2018 Jonathan Neuschäfer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdint.h>
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#include <arch/boot.h>
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#include <arch/encoding.h>
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#include <console/console.h>
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void run_payload(struct prog *prog, void *fdt, int payload_mode)
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{
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void (*doit)(int hart_id, void *fdt) = prog_entry(prog);
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int hart_id = read_csr(mhartid);
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uintptr_t status = read_csr(mstatus);
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status &= ~MSTATUS_MPIE;
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status &= ~MSTATUS_MPP;
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switch (payload_mode) {
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case RISCV_PAYLOAD_MODE_U:
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break;
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case RISCV_PAYLOAD_MODE_S:
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status |= MSTATUS_SPP;
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break;
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case RISCV_PAYLOAD_MODE_M:
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doit(hart_id, fdt);
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return;
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default:
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die("wrong privilege level for payload");
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break;
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}
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write_csr(mstatus, status);
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write_csr(mepc, doit);
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asm volatile(
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"mv a0, %0\n\t"
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"mv a1, %1\n\t"
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"mret" ::"r"(hart_id),
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"r"(fdt)
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: "a0", "a1");
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}
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