1 files changed, 198 insertions, 0 deletions
diff --git a/src/arch/i386/acpi/debug.asl b/src/arch/i386/acpi/debug.asl
new file mode 100644
index 0000000000..bd5c9659e5
--- /dev/null
+++ b/src/arch/i386/acpi/debug.asl
@@ -0,0 +1,198 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 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
+ */
+
+/*
+	DefinitionBlock (
+		"DSDT.AML",
+		"DSDT",
+		0x01,
+		"XXXXXX",
+		"XXXXXXXX",
+		0x00010001
+		)
+	{
+		#include "debug.asl"
+	}
+*/
+
+/*
+* 0x80: POST_BASE
+* 0x3F8: DEBCOM_BASE
+* X80: POST_REGION
+* P80: PORT80
+*
+* CREG: DEBCOM_REGION
+* CUAR: DEBCOM_UART
+* CDAT: DEBCOM_DATA
+* CDLM: DEBCOM_DLM
+* DLCR: DEBCOM_LCR
+* CMCR: DEBCOM_MCR
+* CLSR: DEBCOM_LSR
+*
+* DEBUG_INIT	DINI
+*/
+
+OperationRegion(X80, SystemIO, 0x80, 1)
+	Field(X80, ByteAcc, NoLock, Preserve)
+{
+	P80, 8
+}
+
+OperationRegion(CREG, SystemIO, 0x3F8, 8)
+	Field(CREG, ByteAcc, NoLock, Preserve)
+{
+	CDAT, 8,
+	CDLM, 8,, 8, DLCR, 8, CMCR, 8, CLSR, 8
+}
+
+/*
+* DINI
+* Initialize the COM port to 115,200 8-N-1
+*/
+Method(DINI)
+{
+	store(0x83, DLCR)
+	store(0x01, CDAT)	/* 115200 baud (low) */
+	store(0x00, CDLM)	/* 115200 baud (high) */
+	store(0x03, DLCR)	/* word=8 stop=1 parity=none */
+	store(0x03, CMCR)	/* DTR=1 RTS=1 Out2=Off Loop=Off */
+	store(0x00, CDLM)	/* turn off interrupts */
+}
+
+/*
+* THRE
+* Wait for COM port transmitter holding register to go empty
+*/
+Method(THRE)
+{
+	and(CLSR, 0x20, local0)
+	while (Lequal(local0, Zero)) {
+		and(CLSR, 0x20, local0)
+	}
+}
+
+/*
+* OUTX
+* Send a single raw character
+*/
+Method(OUTX, 1)
+{
+	THRE()
+	store(Arg0, CDAT)
+}
+
+/*
+* OUTC
+* Send a single character, expanding LF into CR/LF
+*/
+Method(OUTC, 1)
+{
+	if (LEqual(Arg0, 0x0a)) {
+		OUTX(0x0d)
+	}
+	OUTX(Arg0)
+}
+
+/*
+* DBGN
+* Send a single hex nibble
+*/
+Method(DBGN, 1)
+{
+	and(Arg0, 0x0f, Local0)
+	if (LLess(Local0, 10)) {
+		add(Local0, 0x30, Local0)
+	} else {
+		add(Local0, 0x37, Local0)
+	}
+	OUTC(Local0)
+}
+
+/*
+* DBGB
+* Send a hex byte
+*/
+Method(DBGB, 1)
+{
+	ShiftRight(Arg0, 4, Local0)
+	DBGN(Local0)
+	DBGN(Arg0)
+}
+
+/*
+* DBGW
+* Send a hex word
+*/
+Method(DBGW, 1)
+{
+	ShiftRight(Arg0, 8, Local0)
+	DBGB(Local0)
+	DBGB(Arg0)
+}
+
+/*
+* DBGD
+* Send a hex Dword
+*/
+Method(DBGD, 1)
+{
+	ShiftRight(Arg0, 16, Local0)
+	DBGW(Local0)
+	DBGW(Arg0)
+}
+
+/*
+* DBGO
+* Send either a string or an integer
+*/
+Method(DBGO, 1)
+{
+	/* DINI() */
+	if (LEqual(ObjectType(Arg0), 1)) {
+		if (LGreater(Arg0, 0xffff)) {
+			DBGD(Arg0)
+		} else {
+			if (LGreater(Arg0, 0xff)) {
+				DBGW(Arg0)
+			} else {
+				DBGB(Arg0)
+			}
+		}
+	} else {
+		Name(BDBG, Buffer(80) {})
+		store(Arg0, BDBG)
+		store(0, Local1)
+		while (One) {
+			store(GETC(BDBG, Local1), Local0)
+			if (LEqual(Local0, 0)) {
+				return (0)
+			}
+			OUTC(Local0)
+			Increment(Local1)
+		}
+	}
+	return (0)
+}
+
+/* Get a char from a string */
+Method(GETC, 2)
+{
+	CreateByteField(Arg0, Arg1, DBGC)
+	return (DBGC)
+}