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 CONFIG_USE_FALLBACK_IMAGE == 1
31 /* Is this a deliberate reset by the bios */
32 if (bios_reset_detected() && last_boot_normal()) {
35 /* This is the primary cpu how should I boot? */
37 if (do_normal_boot()) {
45 __asm__ volatile ("jmp __normal_image"
47 : "a" (bist) /* inputs */
54 /* No servicable parts below this line .. */
57 /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
63 printk_spew("v_esp=%08x\n", v_esp);
68 printk_spew("cpu_reset = %08x\n", cpu_reset);
69 printk_spew("No cache as ram now - ");
71 /* store cpu_reset to ebx */
77 #undef CLEAR_FIRST_1M_RAM
78 #include "cache_as_ram_post.c"
80 /* For now: use rambase + 1MB - 64K (counting downwards) as stack. This
81 * makes sure that we stay completely within the 1M of memory we
82 * preserve with the memcpy above.
85 #ifndef HIGH_MEMORY_SAVE
86 #define HIGH_MEMORY_SAVE ( (1024 - 64) * 1024 )
92 :: "a" (CONFIG_RAMBASE + HIGH_MEMORY_SAVE)
96 unsigned new_cpu_reset;
98 /* get back cpu_reset from ebx */
101 :"=a" (new_cpu_reset)
104 /* Copy and execute coreboot_ram */
105 copy_and_run(new_cpu_reset);
108 /* We will not return */
109 printk_debug("sorry. parachute did not open.\n");