From 9292d89be84d6abf9257ddb872887d4f53b2a00e Mon Sep 17 00:00:00 2001
From: Kerry Sheh <shekairui@gmail.com>
Date: Tue, 31 Jan 2012 20:39:37 +0800
Subject: RD890 Northbridge: AMD RD890/SR56X0 Northbridge CIMX code

Change-Id: If9908ffeb5b707a660db38dc44f5118347cbcc06
Signed-off-by: Kerry Sheh <kerry.she@amd.com>
Signed-off-by: Kerry Sheh <shekairui@gmail.com>
Reviewed-on: http://review.coreboot.org/557
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
---
 .../amd/cimx/rd890/nbMaskedMemoryInit32.S          | 117 +++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 src/vendorcode/amd/cimx/rd890/nbMaskedMemoryInit32.S

(limited to 'src/vendorcode/amd/cimx/rd890/nbMaskedMemoryInit32.S')

diff --git a/src/vendorcode/amd/cimx/rd890/nbMaskedMemoryInit32.S b/src/vendorcode/amd/cimx/rd890/nbMaskedMemoryInit32.S
new file mode 100644
index 0000000000..3c148aa85e
--- /dev/null
+++ b/src/vendorcode/amd/cimx/rd890/nbMaskedMemoryInit32.S
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Advanced Micro Devices, Inc. nor the names of
+ *       its contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/******************************************************************************
+* CIMX Northbridge
+*
+* Contains CIMX 32 bit library code
+*
+* Description: nbMaskedMemoryInit32.S - nb Masked Memory Init 32bit ASM code
+*
+******************************************************************************/
+
+.altmacro
+
+#include <cpu/x86/post_code.h>
+
+        .section ".text"
+        .code32
+        .globl NbInitMaskedMemory, NbInitMaskedMemoryLength
+
+/*
+* PciAddress   = 8(%ebp)
+* AlinkAddress = 12(%ebp)
+*/
+.type NbInitMaskedMemory, @function
+
+NbInitMaskedMemory:
+        push    %ebp
+        movl     %esp, %ebp
+        pusha
+        cmp $0, 12(%ebp)
+        jz	0f
+        mov 12(%ebp), %dx
+        mov $0x80000004, %eax
+        out %eax, %dx
+        add $4, %dx
+        in %dx, %eax
+        btr $2, %eax
+        out %eax, %dx
+       0:
+        mov 8(%ebp), %eax
+        shr $4, %eax
+        or  $0x80000060, %eax
+        mov %eax, %ebx
+        mov $0x0cf8, %dx
+        out %eax, %dx
+        mov $0x0cfc, %dx
+        mov $(0x80 | 0x1B), %eax      # NB_MISC_REG1B
+        out %eax, %dx
+        mov %ebx, %eax
+        mov $0x64, %al
+        mov $0x0cf8, %dx
+        out %eax, %dx
+        mov $0x0cfc, %dx
+        in  %dx, %eax
+        and $(~(0x01ff << 21)), %eax
+        bts $15, %eax
+        xor %ecx, %ecx
+        out %eax, %dx
+StartInit:
+        and $(~(0xff << 22)), %eax
+        shl $22, %ecx
+        or  %ecx, %eax
+        shr $22, %ecx
+        out %eax, %dx
+        bts $21, %eax
+        out %eax, %dx
+        btr $21, %eax
+        out %eax, %dx
+        cmp $0x0ff, %cl
+        je  DoneInit
+        inc %ecx
+        jmp StartInit
+DoneInit:
+        btr $15, %eax
+        out %eax, %dx
+        cmp $0, 12(%ebp)
+        jz	1f
+        mov 12(%ebp), %dx
+        mov $0x80000004, %eax
+        out %eax, %dx
+        add $4, %dx
+        in  %dx, %eax
+        bts $2, %eax
+        out %eax, %dx
+        1:
+        popa
+	movl %ebp, %esp
+        pop     %ebp
+        ret
+NbInitMaskedMemoryLength = ( . - NbInitMaskedMemory)
+
-- 
cgit v1.2.3