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authorStefan Reinauer <stefan.reinauer@coreboot.org>2012-04-04 00:07:22 +0200
committerStefan Reinauer <stefan.reinauer@coreboot.org>2012-04-04 19:10:51 +0200
commit8e073829ec69ee89b3e91f4c040c96988084a526 (patch)
tree2e2b378ec66aa3ecd563b253726aae6e71db043a /src/southbridge/intel/bd82x6x/bootblock.c
parentcb91e1525eb0b81f9bc2e24e3404d6a9efc1cce3 (diff)
downloadcoreboot-8e073829ec69ee89b3e91f4c040c96988084a526.tar.xz
Add support for Intel Panther Point PCH
Change-Id: Iac3cd25b36493bb203e849674320e113cc5fce32 Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/853 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/southbridge/intel/bd82x6x/bootblock.c')
-rw-r--r--src/southbridge/intel/bd82x6x/bootblock.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/src/southbridge/intel/bd82x6x/bootblock.c b/src/southbridge/intel/bd82x6x/bootblock.c
new file mode 100644
index 0000000000..686e820e03
--- /dev/null
+++ b/src/southbridge/intel/bd82x6x/bootblock.c
@@ -0,0 +1,73 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 Google 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
+ */
+
+#include "pch.h"
+
+static void store_initial_timestamp(void)
+{
+ /* On Cougar Point we have two 32bit scratchpad registers available:
+ * D0:F0 0xdc (SKPAD)
+ * D31:F2 0xd0 (SATA SP)
+ */
+ tsc_t tsc = rdtsc();
+ pci_write_config32(PCI_DEV(0, 0x00, 0), 0xdc, tsc.lo);
+ pci_write_config32(PCI_DEV(0, 0x1f, 2), 0xd0, tsc.hi);
+}
+
+/*
+ * Enable Prefetching and Caching.
+ */
+static void enable_spi_prefetch(void)
+{
+ u8 reg8;
+ device_t dev;
+
+ dev = PCI_DEV(0, 0x1f, 0);
+
+ reg8 = pci_read_config8(dev, 0xdc);
+ reg8 &= ~(3 << 2);
+ reg8 |= (2 << 2); /* Prefetching and Caching Enabled */
+ pci_write_config8(dev, 0xdc, reg8);
+}
+
+static void enable_port80_on_lpc(void)
+{
+ device_t dev = PCI_DEV(0, 0x1f, 0);
+
+ /* Enable port 80 POST on LPC */
+ pci_write_config32(dev, RCBA, DEFAULT_RCBA | 1);
+#if 0
+ RCBA32(GCS) &= (~0x04);
+#else
+ volatile u32 *gcs = (volatile u32 *)(DEFAULT_RCBA + GCS);
+ u32 reg32 = *gcs;
+ reg32 = reg32 & ~0x04;
+ *gcs = reg32;
+ post_code(0x01);
+#endif
+}
+
+static void bootblock_southbridge_init(void)
+{
+#if CONFIG_COLLECT_TIMESTAMPS
+ store_initial_timestamp();
+#endif
+ enable_spi_prefetch();
+ enable_port80_on_lpc();
+}