add cs5536

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2265 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

8 files changed, 496 insertions, 0 deletions

diff --git a/src/southbridge/amd/cs5536/Config.lb b/src/southbridge/amd/cs5536/Config.lb
new file mode 100644
index 0000000000..1c76357cb3
--- /dev/null
+++ b/src/southbridge/amd/cs5536/Config.lb
@@ -0,0 +1,4 @@
+#config chip.h
+driver cs5536.o
+#driver cs5535_pci.o
+#driver cs5535_ide.o
diff --git a/src/southbridge/amd/cs5536/chip.h b/src/southbridge/amd/cs5536/chip.h
new file mode 100644
index 0000000000..3e9be9938e
--- /dev/null
+++ b/src/southbridge/amd/cs5536/chip.h
@@ -0,0 +1,10 @@
+#ifndef _SOUTHBRIDGE_AMD_CS5536
+#define _SOUTHBRIDGE_AMD_CS5536
+
+extern struct chip_operations southbridge_amd_cs5536_ops;
+
+struct southbridge_amd_cs5536_config {
+	int none;
+};
+
+#endif	/* _SOUTHBRIDGE_AMD_CS5536 */
diff --git a/src/southbridge/amd/cs5536/cs5536.c b/src/southbridge/amd/cs5536/cs5536.c
new file mode 100644
index 0000000000..953670f783
--- /dev/null
+++ b/src/southbridge/amd/cs5536/cs5536.c
@@ -0,0 +1,41 @@
+
+#include <arch/io.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+#include <console/console.h>
+#include "cs5536.h"
+
+static void southbridge_init(struct device *dev)
+{
+	printk_err("cs5536: %s\n", __FUNCTION__);
+	setup_i8259(); 
+}
+
+static void southbridge_enable(struct device *dev)
+{
+	printk_err("%s: dev is %p\n", __FUNCTION__, dev);
+}
+
+static void cs5536_pci_dev_enable_resources(device_t dev)
+{
+	printk_err("cs5536.c: %s()\n", __FUNCTION__);
+	pci_dev_enable_resources(dev);
+	enable_childrens_resources(dev);
+}
+
+static struct device_operations southbridge_ops = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = cs5536_pci_dev_enable_resources,
+	.init             = southbridge_init,
+	.enable           = southbridge_enable,
+	.scan_bus         = scan_static_bus,
+};
+
+static struct pci_driver cs5535_pci_driver __pci_driver = {
+	.ops 	= &southbridge_ops,
+	.vendor = PCI_VENDOR_ID_AMD,
+	.device = PCI_DEVICE_ID_AMD_CS5536_ISA
+};
diff --git a/src/southbridge/amd/cs5536/cs5536.h b/src/southbridge/amd/cs5536/cs5536.h
new file mode 100644
index 0000000000..82d657204a
--- /dev/null
+++ b/src/southbridge/amd/cs5536/cs5536.h
@@ -0,0 +1,4 @@
+#ifndef _CS5535_H
+#define _CS5535_H
+
+#endif
diff --git a/src/southbridge/amd/cs5536/cs5536_early_setup.c b/src/southbridge/amd/cs5536/cs5536_early_setup.c
new file mode 100644
index 0000000000..ff31f76235
--- /dev/null
+++ b/src/southbridge/amd/cs5536/cs5536_early_setup.c
@@ -0,0 +1,182 @@
+/*
+ *
+ * cs5536_early_setup.c:	Early chipset initialization for CS5536 companion device
+ *
+ *
+ * This file implements the initialization sequence documented in section 4.2 of
+ * AMD Geode GX Processor CS5536 Companion Device GoedeROM Porting Guide.
+ *
+ */
+
+#define CS5536_GLINK_PORT_NUM	0x02	/* the geode link port number to the CS5536 */       
+#define CS5536_DEV_NUM 		0x0F	/* default PCI device number for CS5536 */
+
+/**
+ * @brief Setup PCI IDSEL for CS5536
+ *
+ * 
+ */
+
+static void cs5536_setup_extmsr(void)
+{
+	msr_t msr;
+
+	/* forward MSR access to CS5536_GLINK_PORT_NUM to CS5536_DEV_NUM */
+	msr.hi = msr.lo = 0x00000000;
+	if (CS5536_GLINK_PORT_NUM <= 4) {
+		msr.lo = CS5536_DEV_NUM << ((CS5536_GLINK_PORT_NUM - 1) * 8);
+	} else {
+		msr.hi = CS5536_DEV_NUM << ((CS5536_GLINK_PORT_NUM - 5) * 8);
+	}
+	wrmsr(0x5000201e, msr);
+}
+
+static void cs5536_setup_idsel(void)
+{
+	/* write IDSEL to the write once register at address 0x0000 */
+	outl(0x1 << (CS5536_DEV_NUM + 10), 0);
+}
+
+static void cs5536_usb_swapsif(void)
+{
+	msr_t msr;
+
+	msr = rdmsr(0x51600005);
+	//USB Serial short detect bit.
+	if (msr.hi & 0x10) {
+		/* We need to preserve bits 32,33,35 and not clear any BIST error, but clear the
+		 * SERSHRT error bit */
+		msr.hi &= 0xFFFFFFFB;
+		wrmsr(0x51600005, msr);
+	}
+}
+
+static int cs5536_setup_iobase(void)
+{
+	msr_t msr;
+
+	/* setup LBAR for SMBus controller */
+	__builtin_wrmsr(0x5140000b, 0x00006000, 0x0000f001);
+	/* setup LBAR for GPIO */
+	__builtin_wrmsr(0x5140000c, 0x00006100, 0x0000f001);
+	/* setup LBAR for MFGPT */
+	__builtin_wrmsr(0x5140000d, 0x00006200, 0x0000f001);
+	/* setup LBAR for ACPI */
+	__builtin_wrmsr(0x5140000e, 0x00009c00, 0x0000f001);
+	/* setup LBAR for PM Support */
+	__builtin_wrmsr(0x5140000f, 0x00009d00, 0x0000f001);
+}
+
+static void cs5536_setup_power_bottun(void)
+{
+	/* not implemented yet */
+#if 0
+	pwrBtn_setup:
+	;
+	;	Power Button Setup
+	;
+	;mov	eax, 0C0020000h				; 4 seconds + lock
+	mov	eax, 040020000h				; 4 seconds no lock
+	mov	dx, PMLogic_BASE + 40h
+	out	dx, eax
+
+	; setup GPIO24, it is the external signal for 5536 vsb_work_aux
+	; which controls all voltage rails except Vstandby & Vmem.
+	; We need to enable, OUT_AUX1 and OUTPUT_ENABLE in this order.
+	; If GPIO24 is not enabled then soft-off will not work.
+	mov	dx, GPIOH_OUT_AUX1_SELECT
+	mov	eax, GPIOH_24_SET
+	out	dx, eax
+	mov	dx, GPIOH_OUTPUT_ENABLE
+	out	dx, eax
+
+#endif
+}
+
+static void cs5536_setup_gpio(void)
+{
+	uint32_t val;
+
+	/* setup GPIO pins 14/15 for SDA/SCL */
+	val = (1<<14 | 1<<15);
+	/* Output Enable */
+	outl(0x3fffc000, 0x6100 + 0x04);
+	//outl(val, 0x6100 + 0x04);
+	/* Output AUX1 */
+	outl(0x3fffc000, 0x6100 + 0x10);
+	//outl(val, 0x6100 + 0x10);
+	/* Input Enable */
+	//outl(0x0f5af0a5, 0x6100 + 0x20);
+	outl(0x3fffc000, 0x6100 + 0x20);
+	//outl(val, 0x6100 + 0x20);
+	/* Input AUX1 */
+	//outl(0x3ffbc004, 0x6100 + 0x34);
+	outl(0x3fffc000, 0x6100 + 0x34);
+	//outl(val, 0x6100 + 0x34);
+}
+
+static void cs5536_disable_internal_uart(void)
+{
+	/* not implemented yet */
+#if 0
+	; The UARTs default to enabled.
+	; Disable and reset them and configure them later. (SIO init)
+	mov	ecx, MDD_UART1_CONF
+	RDMSR
+	mov	eax, 1h					; reset
+	WRMSR
+	mov	eax, 0h					; disabled
+	WRMSR
+
+	mov	ecx, MDD_UART2_CONF
+	RDMSR
+	mov	eax, 1h					; reset
+	WRMSR
+	mov	eax, 0h					; disabled
+	WRMSR
+
+#endif
+}
+
+static void cs5536_setup_cis_mode(void)
+{
+	msr_t msr;
+
+	/* setup CPU interface serial to mode C on both sides */
+	msr = __builtin_rdmsr(0x51000010);
+	msr.lo &= ~0x18;
+	msr.lo |= 0x10;
+	__builtin_wrmsr(0x51000010, msr.lo, msr.hi);
+	//Only do this if we are building for 5536
+	__builtin_wrmsr(0x54002010, 0x00000002, 0x00000000);
+}
+
+static void dummy(void)
+{
+}
+
+static int cs5536_early_setup(void)
+{
+	msr_t msr;
+
+	cs5536_setup_extmsr();
+
+	msr = rdmsr(GLCP_SYS_RSTPLL);
+	if (msr.lo & (0x3f << 26)) {
+		/* PLL is already set and we are reboot from PLL reset */
+		print_debug("reboot from BIOS reset\n\r");
+		return;
+	}
+	print_debug("Setup idsel\r\n");
+	cs5536_setup_idsel();
+	print_debug("Setup iobase\r\n");
+	cs5536_usb_swapsif();
+	cs5536_setup_iobase();
+	print_debug("Setup gpio\r\n");
+	cs5536_setup_gpio();
+	print_debug("Setup cis_mode\r\n");
+	cs5536_setup_cis_mode();
+	print_debug("Setup smbus\r\n");
+	cs5536_enable_smbus();
+	dummy();
+}
diff --git a/src/southbridge/amd/cs5536/cs5536_early_smbus.c b/src/southbridge/amd/cs5536/cs5536_early_smbus.c
new file mode 100644
index 0000000000..0605d0cb82
--- /dev/null
+++ b/src/southbridge/amd/cs5536/cs5536_early_smbus.c
@@ -0,0 +1,45 @@
+#include "cs5536_smbus.h"
+
+#define SMBUS_IO_BASE 0x6000
+
+/* initialization for SMBus Controller */
+static int cs5536_enable_smbus(void)
+{
+	unsigned char val;
+
+	/* reset SMBUS controller */
+	outb(0, SMBUS_IO_BASE + SMB_CTRL2);
+
+	/* Set SCL freq and enable SMB controller */
+	val = inb(SMBUS_IO_BASE + SMB_CTRL2);
+	val |= ((0x20 << 1) | SMB_CTRL2_ENABLE);
+	outb(val, SMBUS_IO_BASE + SMB_CTRL2);
+
+	/* Setup SMBus host controller address to 0xEF */
+	val = inb(SMBUS_IO_BASE + SMB_ADD);
+	val |= (0xEF | SMB_ADD_SAEN);
+	outb(val, SMBUS_IO_BASE + SMB_ADD); 
+}
+
+static int smbus_read_byte(unsigned device, unsigned address)
+{
+        return do_smbus_read_byte(SMBUS_IO_BASE, device, address-1);
+}
+
+#if 0
+static int smbus_recv_byte(unsigned device)
+{
+        return do_smbus_recv_byte(SMBUS_IO_BASE, device);
+}
+
+static int smbus_send_byte(unsigned device, unsigned char val)
+{
+        return do_smbus_send_byte(SMBUS_IO_BASE, device, val);
+}
+
+
+static int smbus_write_byte(unsigned device, unsigned address, unsigned char val)
+{
+        return do_smbus_write_byte(SMBUS_IO_BASE, device, address, val);
+}
+#endif
diff --git a/src/southbridge/amd/cs5536/cs5536_ide.c b/src/southbridge/amd/cs5536/cs5536_ide.c
new file mode 100644
index 0000000000..123f775fba
--- /dev/null
+++ b/src/southbridge/amd/cs5536/cs5536_ide.c
@@ -0,0 +1,30 @@
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "cs5535.h"
+
+static void ide_init(struct device *dev)
+{
+	printk_spew("cs5535_ide: %s\n", __FUNCTION__);
+}
+
+static void ide_enable(struct device *dev)
+{
+	printk_spew("cs5535_ide: %s\n", __FUNCTION__);
+}
+
+static struct device_operations ide_ops = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = ide_init,
+	.enable           = ide_enable,
+};
+
+static struct pci_driver ide_driver __pci_driver = {
+	.ops 	= &ide_ops,
+	.vendor = PCI_VENDOR_ID_NS,
+	.device = PCI_DEVICE_ID_NS_CS5535_IDE,
+};
diff --git a/src/southbridge/amd/cs5536/cs5536_smbus.h b/src/southbridge/amd/cs5536/cs5536_smbus.h
new file mode 100644
index 0000000000..9cf55ba29c
--- /dev/null
+++ b/src/southbridge/amd/cs5536/cs5536_smbus.h
@@ -0,0 +1,180 @@
+//#include <device/smbus_def.h>
+#define SMBUS_ERROR -1
+#define SMBUS_WAIT_UNTIL_READY_TIMEOUT -2
+#define SMBUS_WAIT_UNTIL_DONE_TIMEOUT  -3
+
+#define	SMB_SDA		0x00
+#define SMB_STS		0x01
+#define SMB_CTRL_STS	0x02
+#define	SMB_CTRL1	0x03
+#define SMB_ADD		0x04
+#define SMB_CTRL2	0x05
+#define	SMB_CTRL3	0x06
+
+#define SMB_STS_SLVSTP	(0x01 << 7)
+#define SMB_STS_SDAST	(0x01 << 6)
+#define	SMB_STS_BER	(0x01 << 5)
+#define SMB_STS_NEGACK	(0x01 << 4)
+#define	SMB_STS_STASTR	(0x01 << 3)
+#define SMB_STS_NMATCH	(0x01 << 2)
+#define	SMB_STS_MASTER	(0x01 << 1)
+#define SMB_STS_XMIT	(0x01 << 0)
+
+#define	SMB_CSTS_TGSCL	(0x01 << 5)
+#define SMB_CSTS_TSDA	(0x01 << 4)
+#define	SMB_CSTS_GCMTCH	(0x01 << 3)
+#define SMB_CSTS_MATCH	(0x01 << 2)
+#define	SMB_CSTS_BB	(0x01 << 1)
+#define SMB_CSTS_BUSY	(0x01 << 0)
+
+#define	SMB_CTRL1_STASTRE (0x01 << 7)
+#define SMB_CTRL1_NMINTE  (0x01 << 6)
+#define	SMB_CTRL1_GCMEN   (0x01 << 5)
+#define SMB_CTRL1_ACK     (0x01 << 4)
+#define	SMB_CTRL1_RSVD    (0x01 << 3)
+#define SMB_CTRL1_INTEN   (0x01 << 2)
+#define	SMB_CTRL1_STOP    (0x01 << 1)
+#define SMB_CTRL1_START   (0x01 << 0)
+
+#define	SMB_ADD_SAEN	  (0x01 << 7)
+
+#define	SMB_CTRL2_ENABLE  0x01
+
+#define SMBUS_TIMEOUT (100*1000*10)
+#define SMBUS_STATUS_MASK 0xfbff
+
+#define SMBUS_IO_BASE 0x6000
+
+static void smbus_delay(void)
+{
+    	outb(0x80, 0x80);
+}
+
+/* generate a smbus start condition */
+static int smbus_start_condition(unsigned smbus_io_base)
+{
+	unsigned char val;
+	unsigned long loops;
+	loops = SMBUS_TIMEOUT;
+
+	/* issue a START condition */
+	val = inb(smbus_io_base + SMB_CTRL1);
+	outb(val | SMB_CTRL1_START, smbus_io_base + SMB_CTRL1);
+
+	/* check for bus conflict */
+	val = inb(smbus_io_base + SMB_STS);
+	if ((val & SMB_STS_BER) != 0)
+		return SMBUS_ERROR;
+
+	/* check for SDA status */
+	do {
+		smbus_delay();
+		val = inw(smbus_io_base + SMB_STS);
+		if ((val & SMB_STS_SDAST) != 0) {
+			break;
+		}
+	} while(--loops);
+	return loops?0:SMBUS_WAIT_UNTIL_READY_TIMEOUT;
+}
+
+static int smbus_check_stop_condition(unsigned smbus_io_base)
+{
+	unsigned char val;
+	unsigned long loops;
+	loops = SMBUS_TIMEOUT;
+	/* check for SDA status */
+	do {
+		smbus_delay();
+		val = inw(smbus_io_base + SMB_CTRL1);
+		if ((val & SMB_CTRL1_STOP) == 0) {
+			break;
+		}
+	} while(--loops);
+	return loops?0:SMBUS_WAIT_UNTIL_READY_TIMEOUT;
+}
+
+static int smbus_stop_condition(unsigned smbus_io_base)
+{
+	unsigned char val;
+	val = inb(smbus_io_base + SMB_CTRL1);
+	outb(SMB_CTRL1_STOP, smbus_io_base + SMB_CTRL1);
+}
+
+static int smbus_send_slave_address(unsigned smbus_io_base, unsigned char device)
+{
+	unsigned char val;
+	unsigned long loops;
+	loops = SMBUS_TIMEOUT;
+                        
+	/* send the slave address */
+	outb(device, smbus_io_base + SMB_SDA);
+
+	/* check for bus conflict and NACK */
+	val = inb(smbus_io_base + SMB_STS);
+	if (((val & SMB_STS_BER)    != 0) ||
+	    ((val & SMB_STS_NEGACK) != 0))
+		return SMBUS_ERROR;
+
+	/* check for SDA status */
+	do {
+		smbus_delay();
+		val = inw(smbus_io_base + SMB_STS);
+		if ((val & SMB_STS_SDAST) != 0) {
+			break;
+		}
+	} while(--loops);
+	return loops?0:SMBUS_WAIT_UNTIL_READY_TIMEOUT;	
+}
+
+static int smbus_send_command(unsigned smbus_io_base, unsigned char command)
+{
+        unsigned char val;
+	unsigned long loops;
+	loops = SMBUS_TIMEOUT;
+
+	/* send the command */
+	outb(command, smbus_io_base + SMB_SDA);
+
+	/* check for bus conflict and NACK */
+	val = inb(smbus_io_base + SMB_STS);
+	if (((val & SMB_STS_BER)    != 0) ||
+	    ((val & SMB_STS_NEGACK) != 0))
+		return SMBUS_ERROR;
+
+	/* check for SDA status */
+	do {
+		smbus_delay();
+		val = inw(smbus_io_base + SMB_STS);
+		if ((val & SMB_STS_SDAST) != 0) {
+			break;
+		}
+	} while(--loops);
+	return loops?0:SMBUS_WAIT_UNTIL_READY_TIMEOUT;	
+}
+
+static unsigned char do_smbus_read_byte(unsigned smbus_io_base, unsigned char device, unsigned char address)
+{
+	unsigned char val, val1;
+
+	smbus_check_stop_condition(smbus_io_base);
+
+	smbus_start_condition(smbus_io_base);
+
+	smbus_send_slave_address(smbus_io_base, device);
+
+	smbus_send_command(smbus_io_base, address);
+
+	smbus_start_condition(smbus_io_base);
+
+	smbus_send_slave_address(smbus_io_base, device | 0x01);
+
+	/* send NACK to slave */
+	val = inb(smbus_io_base + SMB_CTRL1);
+	outb(val | SMB_CTRL1_ACK, smbus_io_base + SMB_CTRL1);
+
+	val = inb(smbus_io_base + SMB_SDA);
+
+	//smbus_stop_condition(smbus_io_base);
+
+	return val;
+}