2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2008 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 the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include "cpu/x86/car/copy_and_run.c"
22 void real_main(unsigned long bist);
24 void stage1_main(unsigned long bist)
26 unsigned int cpu_reset = 0;
28 #if CONFIG_USE_FALLBACK_IMAGE == 1
29 /* Is this a deliberate reset by the bios */
30 if (bios_reset_detected() && last_boot_normal()) {
33 /* This is the primary cpu how should I boot? */
35 if (do_normal_boot()) {
43 __asm__ volatile ("jmp __normal_image"
45 : "a" (bist) /* inputs */
52 /* No servicable parts below this line .. */
55 /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
61 printk_spew("v_esp=%08x\r\n", v_esp);
66 printk_spew("cpu_reset = %08x\r\n",cpu_reset);
69 print_spew("Clearing initial memory region: ");
71 print_spew("No cache as ram now - ");
73 /* store cpu_reset to ebx */
80 #define CLEAR_FIRST_1M_RAM 1
81 #include "cache_as_ram_post.c"
83 #undef CLEAR_FIRST_1M_RAM
84 #include "cache_as_ram_post.c"
88 /* set new esp */ /* before _RAMBASE */
91 ::"a"( (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE)- CONFIG_RAMBASE )
95 unsigned new_cpu_reset;
97 /* get back cpu_reset from ebx */
100 :"=a" (new_cpu_reset)
103 #ifdef CONFIG_DEACTIVATE_CAR
104 print_debug("Deactivating CAR");
105 #include CONFIG_DEACTIVATE_CAR_FILE
106 print_debug(" - Done.\r\n");
108 /* Copy and execute coreboot_ram */
109 copy_and_run(new_cpu_reset);
110 /* We will not return */
113 print_debug("sorry. parachute did not open.\r\n");