From a4da254a39cf8d2d98140c12b48b3163192594dd Mon Sep 17 00:00:00 2001
From: Zheng Bao <zheng.bao@amd.com>
Date: Thu, 20 Jan 2011 05:59:22 +0000
Subject: [PATCH] S3 feanture of SB800. Compiliant with SB700.

Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Acked-by: Zheng Bao <zheng.bao@amd.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6280 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
---
 src/southbridge/amd/sb800/early_setup.c | 50 +++++++++++++++++++++++++
 src/southbridge/amd/sb800/sb800.h       |  8 +++-
 2 files changed, 57 insertions(+), 1 deletion(-)

diff --git a/src/southbridge/amd/sb800/early_setup.c b/src/southbridge/amd/sb800/early_setup.c
index e9325043b..248b1f508 100644
--- a/src/southbridge/amd/sb800/early_setup.c
+++ b/src/southbridge/amd/sb800/early_setup.c
@@ -646,4 +646,54 @@ static int smbus_read_byte(u32 device, u32 address)
 {
 	return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
 }
+
+int s3_save_nvram_early(u32 dword, int size, int  nvram_pos) {
+	int i;
+	printk(BIOS_DEBUG, "Writing %x of size %d to nvram pos: %d\n", dword, size, nvram_pos);
+
+	for (i = 0; i<size; i++) {
+		outb(nvram_pos, BIOSRAM_INDEX);
+		outb((dword >>(8 * i)) & 0xff , BIOSRAM_DATA);
+		nvram_pos++;
+	}
+
+	return nvram_pos;
+}
+
+int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos) {
+	u32 data = *old_dword;
+	int i;
+	for (i = 0; i<size; i++) {
+		outb(nvram_pos, BIOSRAM_INDEX);
+		data &= ~(0xff << (i * 8));
+		data |= inb(BIOSRAM_DATA) << (i *8);
+		nvram_pos++;
+	}
+	*old_dword = data;
+	printk(BIOS_DEBUG, "Loading %x of size %d to nvram pos:%d\n", *old_dword, size,
+		nvram_pos-size);
+	return nvram_pos;
+}
+
+#if CONFIG_HAVE_ACPI_RESUME == 1
+static int acpi_is_wakeup_early(void) {
+	u16 tmp;
+	tmp = inw(ACPI_PM1_CNT_BLK);
+	printk(BIOS_DEBUG, "IN TEST WAKEUP %x\n", tmp);
+	return (((tmp & (7 << 10)) >> 10) == 3);
+}
+#endif
+
+struct cbmem_entry *get_cbmem_toc(void) {
+	uint32_t xdata = 0;
+	int xnvram_pos = 0xfc, xi;
+	for (xi = 0; xi<4; xi++) {
+		outb(xnvram_pos, BIOSRAM_INDEX);
+		xdata &= ~(0xff << (xi * 8));
+		xdata |= inb(BIOSRAM_DATA) << (xi *8);
+		xnvram_pos++;
+	}
+	return (struct cbmem_entry *) xdata;
+}
+
 #endif
diff --git a/src/southbridge/amd/sb800/sb800.h b/src/southbridge/amd/sb800/sb800.h
index 870e36ad9..cd9fb9ba9 100644
--- a/src/southbridge/amd/sb800/sb800.h
+++ b/src/southbridge/amd/sb800/sb800.h
@@ -24,6 +24,8 @@
 #include "chip.h"
 
 /* Power management index/data registers */
+#define BIOSRAM_INDEX	0xcd4
+#define BIOSRAM_DATA	0xcd5
 #define PM_INDEX	0xcd6
 #define PM_DATA		0xcd7
 #define PM2_INDEX	0xcd0
@@ -47,6 +49,8 @@ extern void set_sm_enable_bits(device_t sm_dev, u32 reg_pos, u32 mask, u32 val);
 #define REV_SB800_A11	0x11
 #define REV_SB800_A12	0x12
 
+void sb800_enable(device_t dev);
+
 #ifdef __PRE_RAM__
 void sb800_lpc_port80(void);
 void sb800_pci_port80(void);
@@ -55,7 +59,9 @@ void sb800_clk_output_48Mhz(void);
 /* void sb800_setup_sata_phys(struct device *dev); */
 #endif
 
-void sb800_enable(device_t dev);
+int s3_save_nvram_early(u32 dword, int size, int  nvram_pos);
+int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos);
+
 void sb800_enable_usbdebug(unsigned int port);
 
 #endif /* SB800_H */
-- 
2.25.1