2 * This file is part of the coreboot project.
4 * Copyright (C) 2000,2007 Ronald G. Minnich <rminnich@gmail.com>
5 * Copyright (C) 2007-2008 coresystems GmbH
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
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, MA 02110-1301 USA
21 #define CACHE_AS_RAM_SIZE CONFIG_DCACHE_RAM_SIZE
22 #define CACHE_AS_RAM_BASE CONFIG_DCACHE_RAM_BASE
23 #define post_code(x) intel_chip_post_macro(x)
25 #include <cpu/x86/mtrr.h>
26 #include <cpu/amd/mtrr.h>
28 /* Save the BIST result */
32 #if CONFIG_USE_FALLBACK_IMAGE == 1
36 /* Send INIT IPI to all excluding ourself */
37 movl $0x000C4500, %eax
38 movl $0xFEE00300, %esi
41 /* Disable prefetchers */
44 orl $((1 << 9) | (1 << 19)), %eax
45 orl $((1 << 5) | (1 << 7)), %edx
48 /* Zero out all Fixed Range and Variable Range MTRRs */
49 movl $mtrr_table, %esi
50 movl $( (mtrr_table_end - mtrr_table) / 2), %edi
61 /* Configure the default memory type to uncacheable */
62 movl $MTRRdefType_MSR, %ecx
64 andl $(~0x00000cff), %eax
67 /* Set cache as ram base address */
68 movl $(MTRRphysBase_MSR(0)), %ecx
69 movl $(CACHE_AS_RAM_BASE | MTRR_TYPE_WRBACK), %eax
73 /* Set cache as ram mask */
74 movl $(MTRRphysMask_MSR(0)), %ecx
75 movl $(~((CACHE_AS_RAM_SIZE-1)) | (1 << 11)), %eax
76 movl $0x0000000f, %edx
80 movl $MTRRdefType_MSR, %ecx
91 /* CR0.CD = 0, CR0.NW = 0 */
93 andl $( ~( (1 << 30) | (1 << 29) ) ), %eax
97 /* Clear the cache memory reagion */
98 movl $CACHE_AS_RAM_BASE, %esi
100 movl $(CACHE_AS_RAM_SIZE / 4), %ecx
101 //movl $0x23322332, %eax
105 /* Enable Cache As RAM mode by disabling cache */
110 #if defined(CONFIG_XIP_ROM_SIZE) && defined(CONFIG_XIP_ROM_BASE)
111 /* Enable cache for our code in Flash because we do XIP here */
112 movl $MTRRphysBase_MSR(1), %ecx
114 movl $(CONFIG_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
117 movl $MTRRphysMask_MSR(1), %ecx
118 movl $0x0000000f, %edx
119 movl $(~(CONFIG_XIP_ROM_SIZE - 1) | 0x800), %eax
121 #endif /* CONFIG_XIP_ROM_SIZE && CONFIG_XIP_ROM_BASE */
125 andl $( ~( (1 << 30) | (1 << 29) ) ), %eax
129 /* Set up stack pointer */
130 #if defined(CONFIG_USBDEBUG_DIRECT) && (CONFIG_USBDEBUG_DIRECT == 1)
131 /* leave some space for the struct ehci_debug_info */
132 movl $(CACHE_AS_RAM_BASE + CACHE_AS_RAM_SIZE - 4 - 128), %eax
134 movl $(CACHE_AS_RAM_BASE + CACHE_AS_RAM_SIZE - 4), %eax
138 /* Restore the BIST result */
154 .word 0x250, 0x258, 0x259
155 .word 0x268, 0x269, 0x26A
156 .word 0x26B, 0x26C, 0x26D
159 .word 0x200, 0x201, 0x202, 0x203
160 .word 0x204, 0x205, 0x206, 0x207
161 .word 0x208, 0x209, 0x20A, 0x20B
162 .word 0x20C, 0x20D, 0x20E, 0x20F