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/*
* 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 <console/console.h>
#include <arch/smp/smp.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!
*/
const void *rom_fdt;
static void do_arch_prog_run(struct prog *prog)
{
void (*doit)(void *) = prog_entry(prog);
void riscvpayload(const void *fdt, void *payload);
if (ENV_RAMSTAGE && prog_type(prog) == PROG_PAYLOAD) {
/*
* FIXME: This is wrong and will crash. Linux can't (in early
* boot) access memory that's before its own loading address.
* We need to copy the FDT to a place where Linux can access it.
*/
const void *fdt = rom_fdt;
printk(BIOS_SPEW, "FDT is at %p\n", fdt);
printk(BIOS_SPEW, "OK, let's go\n");
riscvpayload(fdt, doit);
}
doit(prog_entry_arg(prog));
}
void arch_prog_run(struct prog *prog)
{
smp_resume((void (*)(void *))do_arch_prog_run, prog);
}
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