coreboot/src/arch/riscv/boot.c
Xiang Wang e56fb89e7c riscv: workaround selfboot putting the coreboot table into prog_entry_arg
On RISC-V the argument to a payload is always the hartid and a pointer to a FDT.
selfboot sets the coreboot tables as an argument, work around this here.

Change-Id: If6929897c7f12d8acb079eeebaef512ae506ca8b
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31477
Reviewed-by: ron minnich <rminnich@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Philipp Hug <philipp@hug.cx>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-23 12:15:23 +00:00

64 lines
1.6 KiB
C

/*
* This file is part of the coreboot project.
*
* Copyright 2013 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <program_loading.h>
#include <vm.h>
#include <arch/boot.h>
#include <arch/encoding.h>
#include <arch/smp/smp.h>
#include <mcall.h>
#include <commonlib/cbfs_serialized.h>
/*
* A pointer to the Flattened Device Tree passed to coreboot by the boot ROM.
* Presumably this FDT is also in ROM.
*
* This pointer is only used in ramstage!
*/
static void do_arch_prog_run(struct prog *prog)
{
void (*doit)(int hart_id, void *fdt);
int hart_id;
void *fdt = prog_entry_arg(prog);
/*
* Workaround selfboot putting the coreboot table into prog_entry_arg
*/
if (prog_cbfs_type(prog) == CBFS_TYPE_SELF)
fdt = HLS()->fdt;
/*
* If prog_entry_arg is not set (e.g. by fit_payload), use fdt from HLS
* instead.
*/
if (fdt == NULL)
fdt = HLS()->fdt;
if (ENV_RAMSTAGE && prog_type(prog) == PROG_PAYLOAD) {
run_payload(prog, fdt, RISCV_PAYLOAD_MODE_S);
return;
}
doit = prog_entry(prog);
hart_id = HLS()->hart_id;
doit(hart_id, fdt);
}
void arch_prog_run(struct prog *prog)
{
smp_resume((void (*)(void *))do_arch_prog_run, prog);
}