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authorUwe Hermann <uwe@hermann-uwe.de>2010-10-01 21:46:04 +0000
committerUwe Hermann <uwe@hermann-uwe.de>2010-10-01 21:46:04 +0000
commitdd8367006cf1a400384ff7076379bb53c6abea8a (patch)
tree9e6b74a79611549266680071d3fa72558063d5f5 /src/include/cpu/x86/car.h
parent2ba2b553b5ec01dced1ebadfa086c926f441f754 (diff)
downloadcoreboot-dd8367006cf1a400384ff7076379bb53c6abea8a.tar.xz
Factor out common CAR asm snippets.
This makes the CAR implementations a lot more readable, shorter and easier to follow, and also reduces the amount of uselessly duplicated code. For example there are more than 12 open-coded "enable cache" instances spread all over the place (and 12 "disable cache" ones), multiple "enable mtrr", "save BIST", "restore BIST", etc. etc. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Peter Stuge <peter@stuge.se> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5902 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/include/cpu/x86/car.h')
-rw-r--r--src/include/cpu/x86/car.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/src/include/cpu/x86/car.h b/src/include/cpu/x86/car.h
new file mode 100644
index 0000000000..45c62c6424
--- /dev/null
+++ b/src/include/cpu/x86/car.h
@@ -0,0 +1,75 @@
+/*
+ * 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
+ */
+
+#include <cpu/x86/mtrr.h>
+
+/* Save the BIST result. */
+#define save_bist_result() \
+ movl %eax, %ebp
+
+/* Restore the BIST result. */
+#define restore_bist_result() \
+ movl %ebp, %eax
+
+/* Enable cache. */
+#define enable_cache() \
+ movl %cr0, %eax; \
+ andl $(~((1 << 30) | (1 << 29))), %eax; \
+ movl %eax, %cr0
+
+/* Disable cache. */
+#define disable_cache() \
+ movl %cr0, %eax; \
+ orl $(1 << 30), %eax; \
+ movl %eax, %cr0
+
+/* Enable MTRR. */
+#define enable_mtrr() \
+ movl $MTRRdefType_MSR, %ecx; \
+ rdmsr; \
+ orl $(1 << 11), %eax; \
+ wrmsr
+
+/* Disable MTRR. */
+#define disable_mtrr() \
+ movl $MTRRdefType_MSR, %ecx; \
+ rdmsr; \
+ andl $(~(1 << 11)), %eax; \
+ wrmsr
+
+/* Enable L2 cache. */
+#define enable_l2_cache() \
+ movl $0x11e, %ecx; \
+ rdmsr; \
+ orl $(1 << 8), %eax; \
+ wrmsr
+
+/* Enable SSE. */
+#define enable_sse() \
+ movl %cr4, %eax; \
+ orl $(3 << 9), %eax; \
+ movl %eax, %cr4
+
+/* Disable SSE. */
+#define disable_sse() \
+ movl %cr4, %eax; \
+ andl $~(3 << 9), %eax; \
+ movl %eax, %cr4
+