initial intel core car code.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/coreboot-v3@1002 f3766cd6-281f-0410-b1cd-43a5c92072e9

arch/x86/Makefile

@@ -123,6 +123,10 @@ ifeq ($(CONFIG_CPU_AMD_K8),y)
 	STAGE0_CAR_OBJ = amd/stage0.o
 	STAGE0_ARCH_X86_SRC += amd/k8/stage1.c
 else
+ifeq ($(CONFIG_CPU_INTEL_CORE2),y)
+	STAGE0_CAR_OBJ = intel/core2/stage0.o
+	#STAGE0_ARCH_X86_SRC += intel/core2/stage1.c
+else
 ifeq ($(CONFIG_CPU_VIA_C7),y)
 	STAGE0_CAR_OBJ = via/stage0.o
 	STAGE0_ARCH_X86_SRC += via/stage1.c
@@ -130,6 +134,7 @@ endif
 endif
 endif
 endif
+endif
 
 ifeq ($(CONFIG_PAYLOAD_NO_PREPARSE_ELF), y)
 	PARSEELF =

arch/x86/intel/core2/stage0.S

@@ -0,0 +1,190 @@
+/* 
+ * This file is part of the coreboot project.
+ * 
+ * Copyright (C) 2000,2007 Ronald G. Minnich <rminnich@gmail.com>
+ * Copyright (C) 2007-2008 coresystems GmbH
+ * 
+ * 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.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#define CACHE_AS_RAM_SIZE DCACHE_RAM_SIZE
+#define CACHE_AS_RAM_BASE DCACHE_RAM_BASE
+#define post_code(x) intel_chip_post_macro(x)
+
+#include <cpu/x86/mtrr.h>
+#include <cpu/amd/mtrr.h>
+
+#include <macros.h>
+
+#define ROM_CODE_SEG 0x08
+#define ROM_DATA_SEG 0x10
+
+#define CACHE_RAM_CODE_SEG 0x18
+#define CACHE_RAM_DATA_SEG 0x20
+
+	/* When we come here we are in protected mode. We expand the stack
+	 * and copy the data segment from ROM to the memory.
+	 *
+	 * After that, we call the chipset bootstrap routine that
+	 * does what is left of the chipset initialization.
+	 *
+	 * NOTE: Aligned to 4 so that we are sure that the prefetch
+	 * cache will be reloaded.
+	 */
+
+	.align  4
+	.globl protected_stage0
+protected_stage0:
+	/* This code was used by v2. TODO. */
+	lgdt	%cs:gdtptr
+	ljmp	$ROM_CODE_SEG, $__protected_stage0
+
+.globl __protected_stage0
+__protected_stage0:
+	/* Save the BIST result. */
+	movl	%eax, %ebp
+
+	port80_post(0x01)
+
+	movw	$ROM_DATA_SEG, %ax
+	movw	%ax, %ds
+	movw	%ax, %es
+	movw	%ax, %ss
+	movw	%ax, %fs
+	movw	%ax, %gs
+
+cache_as_ram:
+#if USE_FALLBACK_IMAGE == 1
+
+	post_code(0x20)
+
+	/* Send INIT IPI to all excluding ourself */
+        movl	$0x000C4500, %eax
+        movl	$0xFEE00300, %esi
+        movl	%eax, (%esi)
+
+	/* Zero out all Fixed Range and Variable Range MTRRs */
+	movl	$mtrr_table, %esi
+	movl	$( (mtrr_table_end - mtrr_table) / 2), %edi
+	xorl    %eax, %eax
+	xorl    %edx, %edx
+clear_mtrrs:
+	movw    (%esi), %bx
+	movzx   %bx, %ecx
+	wrmsr
+	add	$2, %esi
+	dec	%edi
+	jnz	clear_mtrrs
+
+	/* Configure the default memory type to uncacheable */
+	movl	$MTRRdefType_MSR, %ecx
+	rdmsr
+	andl	$(~0x00000cff), %eax
+	wrmsr
+
+	/* Set cache as ram base address */
+	movl	$(MTRRphysBase_MSR(0)), %ecx
+	movl	$(CACHE_AS_RAM_BASE | MTRR_TYPE_WRBACK), %eax
+	xorl	%edx, %edx
+	wrmsr
+
+	/* Set cache as ram mask */
+	movl	$(MTRRphysMask_MSR(0)), %ecx
+	movl	$(~((CACHE_AS_RAM_SIZE-1)) | (1 << 11)), %eax
+	movl	$0x0000000f, %edx
+	wrmsr
+
+	/* Enable MTRR */
+	movl	$MTRRdefType_MSR, %ecx
+	rdmsr
+	orl	$(1 << 11), %eax
+	wrmsr
+
+	/* Enable L2 Cache */
+	movl	$0x11e, %ecx
+	rdmsr
+	orl	$(1 << 8), %eax
+	wrmsr
+
+	/* CR0.CD = 0, CR0.NW = 0 */
+        movl	%cr0, %eax
+	andl	$( ~( (1 << 30) | (1 << 29) ) ), %eax
+	invd
+	movl	%eax, %cr0
+
+	/* Clear the cache memory reagion */
+	movl	$CACHE_AS_RAM_BASE, %esi
+	movl	%esi, %edi
+	movl	$(CACHE_AS_RAM_SIZE / 4), %ecx
+	//movl	$0x23322332, %eax
+	xorl	%eax, %eax
+	rep	stosl
+#endif
+
+	/* Enable Cache As RAM mode by disabling cache */
+	movl	%cr0, %eax
+	orl	$(1 << 30), %eax
+	movl	%eax, %cr0
+
+#if defined(XIP_ROM_SIZE) && defined(XIP_ROM_BASE)
+	/* Enable cache for our code in Flash because we do XIP here */
+        movl    $MTRRphysBase_MSR(1), %ecx
+        xorl    %edx, %edx
+        movl    $(XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
+        wrmsr
+
+        movl    $MTRRphysMask_MSR(1), %ecx
+        movl    $0x0000000f, %edx
+        movl    $(~(XIP_ROM_SIZE - 1) | 0x800), %eax
+        wrmsr
+#endif /* XIP_ROM_SIZE && XIP_ROM_BASE */
+
+        /* enable cache */
+        movl	%cr0, %eax
+	andl	$( ~( (1 << 30) | (1 << 29) ) ), %eax
+        movl	%eax, %cr0
+
+	/* Set up stack pointer */
+	movl	$(CACHE_AS_RAM_BASE + CACHE_AS_RAM_SIZE - 4), %eax
+	movl	%eax, %esp
+
+	/* Restore the BIST result */
+	movl	%ebp, %eax
+	movl	%esp, %ebp
+	pushl	%eax
+
+	post_code(0x23)
+
+	call	stage1_phase1
+
+	post_code(0x2f)
+error:
+	hlt
+	jmp	error
+
+mtrr_table:
+	/* Fixed MTRRs */
+        .word 0x250, 0x258, 0x259
+        .word 0x268, 0x269, 0x26A
+        .word 0x26B, 0x26C, 0x26D
+        .word 0x26E, 0x26F
+	/* Variable MTRRs */
+        .word 0x200, 0x201, 0x202, 0x203
+        .word 0x204, 0x205, 0x206, 0x207
+        .word 0x208, 0x209, 0x20A, 0x20B
+        .word 0x20C, 0x20D, 0x20E, 0x20F
+mtrr_table_end:
+
+
+#include "../../stage0_common.S"