| /* |
| * 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); |
| } |