[coreboot] [commit] r5485 - trunk/src/southbridge/via/vt8237r

[repository service]

Author: ruik
Date: Fri Apr 23 22:58:13 2010
New Revision: 5485
URL: https://tracker.coreboot.org/trac/coreboot/changeset/5485

Log:
Attached patch adds support for tinybootblock on VT8237* to decode whole flash
independent of strapping, making larger flashes work. We cannot walk anything
else than PCI bus 0 because HT is not setup yet.

Signed-off-by: Rudolf Marek <r.marek at assembler.cz>
Acked-by: Stefan Reinauer <stepan at coresystems.de>
Acked-by: Myles Watson <mylesgw at gmail.com>

Added:
   trunk/src/southbridge/via/vt8237r/bootblock.c
Modified:
   trunk/src/southbridge/via/vt8237r/Kconfig

Modified: trunk/src/southbridge/via/vt8237r/Kconfig
==============================================================================
--- trunk/src/southbridge/via/vt8237r/Kconfig	Fri Apr 23 21:16:30 2010	(r5484)
+++ trunk/src/southbridge/via/vt8237r/Kconfig	Fri Apr 23 22:58:13 2010	(r5485)
@@ -25,3 +25,8 @@
 	bool
 	default n
 	depends on SOUTHBRIDGE_VIA_VT8237R
+
+config BOOTBLOCK_SOUTHBRIDGE_INIT
+	string
+	default "southbridge/via/vt8237r/bootblock.c"
+	depends on SOUTHBRIDGE_VIA_VT8237R

Added: trunk/src/southbridge/via/vt8237r/bootblock.c
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ trunk/src/southbridge/via/vt8237r/bootblock.c	Fri Apr 23 22:58:13 2010	(r5485)
@@ -0,0 +1,46 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Rudolf Marek <r.marek at assembler.cz>
+ *
+ * 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 <arch/io.h>
+#include <arch/romcc_io.h>
+#include <device/pci_ids.h>
+
+static void bootblock_southbridge_init(void)
+{
+	device_t dev;
+	/* don't walk other busses, HT is not enabled */
+
+	/* ROM decode last 8MB FF800000 - FFFFFFFF on VT8237S/VT8237A */
+	/* ROM decode last 4MB FFC00000 - FFFFFFFF on VT8237R */
+
+	/* Power management controller */
+	dev = pci_locate_device_on_bus(PCI_ID(PCI_VENDOR_ID_VIA,
+		    PCI_DEVICE_ID_VIA_VT8237R_LPC), 0);
+
+	if (dev == PCI_DEV_INVALID) {
+		/* Power management controller */
+		dev = pci_locate_device_on_bus(PCI_ID(PCI_VENDOR_ID_VIA,
+			PCI_DEVICE_ID_VIA_VT8237S_LPC), 0);
+
+		if (dev == PCI_DEV_INVALID)
+			return;
+	}
+
+	pci_write_config8(dev, 0x41, 0x7f);
+}