Enable full ROM access on AMD CS5530(A) (needed for CBFS).

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4731 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

12 files changed, 77 insertions, 8 deletions

diff --git a/src/mainboard/advantech/pcm-5820/auto.c b/src/mainboard/advantech/pcm-5820/auto.c
index 1b3e968..6b09ddd 100644
--- a/src/mainboard/advantech/pcm-5820/auto.c
+++ b/src/mainboard/advantech/pcm-5820/auto.c
@@ -31,6 +31,7 @@
 #include "northbridge/amd/gx1/raminit.c"
 #include "cpu/x86/bist.h"
 #include "superio/winbond/w83977f/w83977f_early_serial.c"
+#include "southbridge/amd/cs5530/cs5530_enable_rom.c"
 
 #define SERIAL_DEV PNP_DEV(0x3f0, W83977F_SP1)
 
@@ -40,6 +41,7 @@ static void main(unsigned long bist)
 	uart_init();
 	console_init();
 	report_bist_failure(bist);
+	cs5530_enable_rom();
 	sdram_init();
 	/* ram_check(0, 640 * 1024); */
 }
diff --git a/src/mainboard/asi/mb_5blgp/auto.c b/src/mainboard/asi/mb_5blgp/auto.c
index 616f7fa..7f2d086 100644
--- a/src/mainboard/asi/mb_5blgp/auto.c
+++ b/src/mainboard/asi/mb_5blgp/auto.c
@@ -31,6 +31,7 @@
 #include "northbridge/amd/gx1/raminit.c"
 #include "cpu/x86/bist.h"
 #include "superio/nsc/pc87351/pc87351_early_serial.c"
+#include "southbridge/amd/cs5530/cs5530_enable_rom.c"
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC87351_SP1)
 
@@ -40,6 +41,7 @@ static void main(unsigned long bist)
 	uart_init();
 	console_init();
 	report_bist_failure(bist);
+	cs5530_enable_rom();
 	sdram_init();
 	/* ram_check(0, 640 * 1024); */
 }
diff --git a/src/mainboard/asi/mb_5blmp/auto.c b/src/mainboard/asi/mb_5blmp/auto.c
index df9e09c..b4356c3 100644
--- a/src/mainboard/asi/mb_5blmp/auto.c
+++ b/src/mainboard/asi/mb_5blmp/auto.c
@@ -32,6 +32,7 @@
 #include "northbridge/amd/gx1/raminit.c"
 #include "superio/nsc/pc87351/pc87351_early_serial.c"
 #include "cpu/x86/bist.h"
+#include "southbridge/amd/cs5530/cs5530_enable_rom.c"
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC87351_SP1)
 
@@ -45,6 +46,8 @@ static void main(unsigned long bist)
 	/* Halt if there was a built in self test failure. */
 	report_bist_failure(bist);
 
+	cs5530_enable_rom();
+
 	/* Initialize RAM. */
 	sdram_init();
 
diff --git a/src/mainboard/axus/tc320/auto.c b/src/mainboard/axus/tc320/auto.c
index 31af3b9..6d5843d 100644
--- a/src/mainboard/axus/tc320/auto.c
+++ b/src/mainboard/axus/tc320/auto.c
@@ -32,6 +32,7 @@
 #include "northbridge/amd/gx1/raminit.c"
 #include "superio/nsc/pc97317/pc97317_early_serial.c"
 #include "cpu/x86/bist.h"
+#include "southbridge/amd/cs5530/cs5530_enable_rom.c"
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC97317_SP1)
 
@@ -41,6 +42,7 @@ static void main(unsigned long bist)
 	uart_init();
 	console_init();
 	report_bist_failure(bist);
+	cs5530_enable_rom();
 	sdram_init();
 	/* ram_check(0, 640 * 1024); */
 }
diff --git a/src/mainboard/bcom/winnet100/auto.c b/src/mainboard/bcom/winnet100/auto.c
index 5abba9c..190e71d 100644
--- a/src/mainboard/bcom/winnet100/auto.c
+++ b/src/mainboard/bcom/winnet100/auto.c
@@ -32,6 +32,7 @@
 #include "northbridge/amd/gx1/raminit.c"
 #include "superio/nsc/pc97317/pc97317_early_serial.c"
 #include "cpu/x86/bist.h"
+#include "southbridge/amd/cs5530/cs5530_enable_rom.c"
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC97317_SP1)
 
@@ -45,6 +46,8 @@ static void main(unsigned long bist)
 	/* Halt if there was a built in self test failure. */
 	report_bist_failure(bist);
 
+	cs5530_enable_rom();
+
 	/* Initialize RAM. */
 	sdram_init();
 
diff --git a/src/mainboard/eaglelion/5bcm/auto.c b/src/mainboard/eaglelion/5bcm/auto.c
index 4d34ab1..8ab87ac 100644
--- a/src/mainboard/eaglelion/5bcm/auto.c
+++ b/src/mainboard/eaglelion/5bcm/auto.c
@@ -14,6 +14,7 @@
 #include "superio/nsc/pc97317/pc97317_early_serial.c"
 //#include "northbridge/intel/i440bx/raminit.h"
 #include "cpu/x86/bist.h"
+#include "southbridge/amd/cs5530/cs5530_enable_rom.c"
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC97317_SP1)
 
@@ -30,6 +31,8 @@ static void main(unsigned long bist)
 	/* Halt if there was a built in self test failure */
 	report_bist_failure(bist);
 	
+	cs5530_enable_rom();
+
 	sdram_init();
 	
 	/* Check all of memory */
diff --git a/src/mainboard/iei/juki-511p/auto.c b/src/mainboard/iei/juki-511p/auto.c
index 5fafe01..d7cd1ac 100644
--- a/src/mainboard/iei/juki-511p/auto.c
+++ b/src/mainboard/iei/juki-511p/auto.c
@@ -30,6 +30,7 @@
 #include "arch/i386/lib/console.c"
 #include "lib/ramtest.c"
 #include "superio/winbond/w83977f/w83977f_early_serial.c"
+#include "southbridge/amd/cs5530/cs5530_enable_rom.c"
 #include "cpu/x86/bist.h"
 #include "pc80/udelay_io.c"
 
@@ -51,6 +52,8 @@ static void main(unsigned long bist)
 	inb(0x043);
 	inb(0x843);
 
+	cs5530_enable_rom();
+
 	/* Initialize RAM. */
 	sdram_init();
 
diff --git a/src/mainboard/iei/nova4899r/auto.c b/src/mainboard/iei/nova4899r/auto.c
index bcae673..1ad2dec 100644
--- a/src/mainboard/iei/nova4899r/auto.c
+++ b/src/mainboard/iei/nova4899r/auto.c
@@ -30,6 +30,7 @@
 #include "arch/i386/lib/console.c"
 #include "lib/ramtest.c"
 #include "superio/winbond/w83977tf/w83977tf_early_serial.c"
+#include "southbridge/amd/cs5530/cs5530_enable_rom.c"
 #include "cpu/x86/bist.h"
 
 #define SERIAL_DEV PNP_DEV(0x3f0, W83977TF_SP1)
@@ -46,6 +47,8 @@ static void main(unsigned long bist)
 	/* Halt if there was a built in self test failure. */
 	report_bist_failure(bist);
 
+	cs5530_enable_rom();
+
 	/* Initialize RAM. */
 	sdram_init();
 
diff --git a/src/mainboard/televideo/tc7020/auto.c b/src/mainboard/televideo/tc7020/auto.c
index 5abba9c..190e71d 100644
--- a/src/mainboard/televideo/tc7020/auto.c
+++ b/src/mainboard/televideo/tc7020/auto.c
@@ -32,6 +32,7 @@
 #include "northbridge/amd/gx1/raminit.c"
 #include "superio/nsc/pc97317/pc97317_early_serial.c"
 #include "cpu/x86/bist.h"
+#include "southbridge/amd/cs5530/cs5530_enable_rom.c"
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC97317_SP1)
 
@@ -45,6 +46,8 @@ static void main(unsigned long bist)
 	/* Halt if there was a built in self test failure. */
 	report_bist_failure(bist);
 
+	cs5530_enable_rom();
+
 	/* Initialize RAM. */
 	sdram_init();
 
diff --git a/src/southbridge/amd/cs5530/cs5530.h b/src/southbridge/amd/cs5530/cs5530.h
index df4f66b..107b6f2 100644
--- a/src/southbridge/amd/cs5530/cs5530.h
+++ b/src/southbridge/amd/cs5530/cs5530.h
@@ -27,6 +27,12 @@ void cs5530_enable(device_t dev);
 #endif
 
 #define DECODE_CONTROL_REG2		0x5b		/* F0 index 0x5b */
+#define ROM_AT_LOGIC_CONTROL_REG	0x52		/* F0 index 0x52 */
+
+#define LOWER_ROM_ADDRESS_RANGE		(1 << 0)
+#define ROM_WRITE_ENABLE		(1 << 1)
+#define UPPER_ROM_ADDRESS_RANGE		(1 << 2)
+#define BIOS_ROM_POSITIVE_DECODE	(1 << 5)
 
 /* Selects PCI positive decoding for accesses to the configured ROM space. */
 #define BIOS_ROM_POSITIVE_DECODE	(1 << 5)
diff --git a/src/southbridge/amd/cs5530/cs5530_enable_rom.c b/src/southbridge/amd/cs5530/cs5530_enable_rom.c
new file mode 100644
index 0000000..09ec3ed
--- /dev/null
+++ b/src/southbridge/amd/cs5530/cs5530_enable_rom.c
@@ -0,0 +1,47 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 <stdint.h>
+#include "cs5530.h"
+
+static void cs5530_enable_rom(void)
+{
+	uint8_t reg8;
+
+	/* So far all CS5530(A) ISA bridges we've seen are at 00:12.0. */
+	device_t dev = PCI_DEV(0, 0x12, 0);
+
+	/*
+	 * Decode 0x000E0000-0x000FFFFF (128 KB), not just 64 KB, and
+	 * decode 0xFF000000-0xFFFFFFFF (16 MB), not just 256 KB.
+	 *
+	 * Make the ROM write-protected.
+	 */
+	reg8 = pci_read_config8(dev, ROM_AT_LOGIC_CONTROL_REG);
+	reg8 |= LOWER_ROM_ADDRESS_RANGE;
+	reg8 |= UPPER_ROM_ADDRESS_RANGE;
+	reg8 &= ~ROM_WRITE_ENABLE;
+	pci_write_config8(dev, ROM_AT_LOGIC_CONTROL_REG, reg8);
+
+	/* Set positive decode on ROM. */
+	reg8 = pci_read_config8(dev, DECODE_CONTROL_REG2);
+	reg8 |= BIOS_ROM_POSITIVE_DECODE;
+	pci_write_config8(dev, DECODE_CONTROL_REG2, reg8);
+}
diff --git a/src/southbridge/amd/cs5530/cs5530_isa.c b/src/southbridge/amd/cs5530/cs5530_isa.c
index a4d3b2e..ad41bd2 100644
--- a/src/southbridge/amd/cs5530/cs5530_isa.c
+++ b/src/southbridge/amd/cs5530/cs5530_isa.c
@@ -45,14 +45,6 @@ static void cs5530_read_resources(device_t dev)
 
 static void isa_init(struct device *dev)
 {
-	uint8_t reg8;
-
-	// TODO: Test if needed, otherwise drop.
-
-	/* Set positive decode on ROM. */
-	reg8 = pci_read_config8(dev, DECODE_CONTROL_REG2);
-	reg8 |= BIOS_ROM_POSITIVE_DECODE;
-	pci_write_config8(dev, DECODE_CONTROL_REG2, reg8);
 }
 
 static void cs5530_pci_dev_enable_resources(device_t dev)