This code provides southbridge initialization for SB800 south bridges. It is dependent on the AMD CIMx/SB800 code.
Signed-off-by: Frank Vibrans <frank.vibrans@amd.com>
Acked-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Acked-by: Marc Jones <marcj303@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6346 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/src/southbridge/amd/cimx_wrapper/sb800/lpc.c b/src/southbridge/amd/cimx_wrapper/sb800/lpc.c
new file mode 100644
index 0000000..39762a9
--- /dev/null
+++ b/src/southbridge/amd/cimx_wrapper/sb800/lpc.c
@@ -0,0 +1,173 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 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
+ */
+
+#include <device/pci.h>
+#include "lpc.h"
+
+
+void lpc_read_resources(device_t dev)
+{
+ struct resource *res;
+
+ /* Get the normal pci resources of this device */
+ pci_dev_read_resources(dev); /* We got one for APIC, or one more for TRAP */
+
+ pci_get_resource(dev, SPIROM_BASE_ADDRESS); /* SPI ROM base address */
+
+ /* Add an extra subtractive resource for both memory and I/O. */
+ res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
+ res->base = 0;
+ res->size = 0x1000;
+ res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE |
+ IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+ res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
+ res->base = 0xff800000;
+ res->size = 0x00800000; /* 8 MB for flash */
+ res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE |
+ IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+ res = new_resource(dev, 3); /* IOAPIC */
+ res->base = 0xfec00000;
+ res->size = 0x00001000;
+ res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+ compact_resources(dev);
+}
+
+void lpc_set_resources(struct device *dev)
+{
+ struct resource *res;
+
+ pci_dev_set_resources(dev);
+
+ /* Specical case. SPI Base Address. The SpiRomEnable should be set. */
+ res = find_resource(dev, SPIROM_BASE_ADDRESS);
+ pci_write_config32(dev, SPIROM_BASE_ADDRESS, res->base | 1 << 1);
+
+}
+
+/**
+ * @brief Enable resources for children devices
+ *
+ * @param dev the device whos children's resources are to be enabled
+ *
+ */
+void lpc_enable_childrens_resources(device_t dev)
+{
+ struct bus *link;
+ u32 reg, reg_x;
+ int var_num = 0;
+ u16 reg_var[3];
+
+ reg = pci_read_config32(dev, 0x44);
+ reg_x = pci_read_config32(dev, 0x48);
+
+ for (link = dev->link_list; link; link = link->next) {
+ device_t child;
+ for (child = link->children; child;
+ child = child->sibling) {
+ if (child->enabled
+ && (child->path.type == DEVICE_PATH_PNP)) {
+ struct resource *res;
+ for (res = child->resource_list; res; res = res->next) {
+ u32 base, end; /* don't need long long */
+ if (!(res->flags & IORESOURCE_IO))
+ continue;
+ base = res->base;
+ end = resource_end(res);
+/*
+ printk(BIOS_DEBUG, "sb800 lpc decode:%s, base=0x%08x, end=0x%08x\n",
+ dev_path(child), base, end);
+*/
+ switch (base) {
+ case 0x60: /* KB */
+ case 0x64: /* MS */
+ reg |= (1 << 29);
+ break;
+ case 0x3f8: /* COM1 */
+ reg |= (1 << 6);
+ break;
+ case 0x2f8: /* COM2 */
+ reg |= (1 << 7);
+ break;
+ case 0x378: /* Parallal 1 */
+ reg |= (1 << 0);
+ break;
+ case 0x3f0: /* FD0 */
+ reg |= (1 << 26);
+ break;
+ case 0x220: /* Aduio 0 */
+ reg |= (1 << 8);
+ break;
+ case 0x300: /* Midi 0 */
+ reg |= (1 << 18);
+ break;
+ case 0x400:
+ reg_x |= (1 << 16);
+ break;
+ case 0x480:
+ reg_x |= (1 << 17);
+ break;
+ case 0x500:
+ reg_x |= (1 << 18);
+ break;
+ case 0x580:
+ reg_x |= (1 << 19);
+ break;
+ case 0x4700:
+ reg_x |= (1 << 22);
+ break;
+ case 0xfd60:
+ reg_x |= (1 << 23);
+ break;
+ default:
+ if (var_num >= 3)
+ continue; /* only 3 var ; compact them ? */
+ switch (var_num) {
+ case 0:
+ reg_x |= (1 << 2);
+ break;
+ case 1:
+ reg_x |= (1 << 24);
+ break;
+ case 2:
+ reg_x |= (1 << 25);
+ break;
+ }
+ reg_var[var_num++] =
+ base & 0xffff;
+ }
+ }
+ }
+ }
+ }
+ pci_write_config32(dev, 0x44, reg);
+ pci_write_config32(dev, 0x48, reg_x);
+ /* Set WideIO for as many IOs found (fall through is on purpose) */
+ switch (var_num) {
+ case 2:
+ pci_write_config16(dev, 0x90, reg_var[2]);
+ case 1:
+ pci_write_config16(dev, 0x66, reg_var[1]);
+ case 0:
+ //pci_write_config16(dev, 0x64, reg_var[0]); //cause filo can not find sata
+ break;
+ }
+}