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-rw-r--r--src/cpu/amd/agesa_wrapper/family14/cache_as_ram.inc98
1 files changed, 98 insertions, 0 deletions
diff --git a/src/cpu/amd/agesa_wrapper/family14/cache_as_ram.inc b/src/cpu/amd/agesa_wrapper/family14/cache_as_ram.inc
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index 000000000..98da3cbff
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+++ b/src/cpu/amd/agesa_wrapper/family14/cache_as_ram.inc
@@ -0,0 +1,98 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 Advanced Micro Devices, Inc.
+ *
+ * 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
+ */
+
+/******************************************************************************
+ * AMD Generic Encapsulated Software Architecture
+ *
+ * $Workfile:: cache_as_ram.inc
+ *
+ * Description: cache_as_ram.inc - AGESA Module Entry Point for GCC complier
+ *
+ ******************************************************************************
+ */
+
+#include "gcccar.inc"
+
+/*
+ * XMM map:
+ * xmm0: BIST
+ * xmm1: backup ebx -- cpu_init_detected
+ */
+
+.code32
+.globl cache_as_ram_setup, disable_cache_as_ram, cache_as_ram_setup_out
+
+cache_as_ram_setup:
+
+ post_code(0xa0)
+
+ /* enable SSE2 128bit instructions */
+ /* Turn on OSFXSR [BIT9] and OSXMMEXCPT [BIT10] onto CR4 register */
+
+ movl %cr4, %eax
+ orl $(3<<9), %eax
+ movl %eax, %cr4
+
+ /* Get the cpu_init_detected */
+ mov $1, %eax
+ cpuid
+ shr $24, %ebx
+
+ /* Save the BIST result */
+ cvtsi2sd %ebp, %xmm0
+
+ /* for normal part %ebx already contain cpu_init_detected from fallback call */
+
+ /* Save the cpu_init_detected */
+ cvtsi2sd %ebx, %xmm1
+
+ post_code(0xa1)
+ AMD_ENABLE_STACK
+
+ post_code(0xa1)
+
+ /* Restore the BIST result */
+ cvtsd2si %xmm0, %edx
+
+ /* Restore the cpu_init_detected */
+ cvtsd2si %xmm1, %ebx
+
+ pushl %ebx /* init detected */
+ pushl %edx /* bist */
+ call cache_as_ram_main
+
+ /* Should never see this postcode */
+ post_code(0xaf)
+stop:
+ jmp stop
+
+disable_cache_as_ram:
+ /* Save return stack */
+ cvtsi2sd %esp, %xmm0
+
+ AMD_DISABLE_STACK
+
+ /* Restore the return stack */
+ cvtsd2si %xmm0, %esp
+
+ ret
+
+cache_as_ram_setup_out:
+
+