2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2009 coresystems GmbH
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; version 2 of
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
22 #include "cpu/x86/car/copy_and_run.c"
24 void real_main(unsigned long bist);
26 void stage1_main(unsigned long bist)
28 unsigned int cpu_reset = 0;
30 #if !defined(CONFIG_TINY_BOOTBLOCK) || !CONFIG_TINY_BOOTBLOCK
31 #if CONFIG_USE_FALLBACK_IMAGE == 1
32 /* Is this a deliberate reset by the bios */
33 if (bios_reset_detected() && last_boot_normal()) {
36 /* This is the primary cpu how should I boot? */
38 if (do_normal_boot()) {
46 __asm__ volatile ("jmp __normal_image"
48 : "a" (bist) /* inputs */
56 /* No servicable parts below this line .. */
59 /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
65 printk_spew("v_esp=%08x\n", v_esp);
70 printk_spew("cpu_reset = %08x\n", cpu_reset);
71 printk_spew("No cache as ram now - ");
73 /* store cpu_reset to ebx */
79 #undef CLEAR_FIRST_1M_RAM
80 #include "cache_as_ram_post.c"
82 /* For now: use rambase + 1MB - 64K (counting downwards) as stack. This
83 * makes sure that we stay completely within the 1M of memory we
84 * preserve with the memcpy above.
87 #ifndef HIGH_MEMORY_SAVE
88 #define HIGH_MEMORY_SAVE ( (1024 - 64) * 1024 )
94 :: "a" (CONFIG_RAMBASE + HIGH_MEMORY_SAVE)
98 unsigned new_cpu_reset;
100 /* get back cpu_reset from ebx */
103 :"=a" (new_cpu_reset)
106 /* Copy and execute coreboot_ram */
107 copy_and_run(new_cpu_reset);
110 /* We will not return */
111 printk_debug("sorry. parachute did not open.\n");