AMD Geode GX/LX Support (Refreshed)

Index: linux-2.6.14/arch/i386/kernel/cpu/amd.c
===================================================================
@@ -161,6 +161,13 @@ static void __init init_amd(struct cpuin
 					set_bit(X86_FEATURE_K6_MTRR, c->x86_capability);
 				break;
 			}
+
+			if ( c->x86_model == 10 ) {
+				/* AMD Geode LX is model 10 */
+				/* placeholder for any needed mods */
+				break;
+			}
+
 			break;
 
 		case 6: /* An Athlon/Duron */

Index: linux-2.6.14/include/linux/pci_ids.h
===================================================================
@@ -405,6 +405,13 @@
 #define PCI_DEVICE_ID_NS_SC1100_XBUS	0x0515
 #define PCI_DEVICE_ID_NS_87410		0xd001
 
+#define PCI_DEVICE_ID_NS_CS5535_HOST_BRIDGE  0x0028
+#define PCI_DEVICE_ID_NS_CS5535_ISA_BRIDGE   0x002b
+#define PCI_DEVICE_ID_NS_CS5535_IDE          0x002d
+#define PCI_DEVICE_ID_NS_CS5535_AUDIO        0x002e
+#define PCI_DEVICE_ID_NS_CS5535_USB          0x002f
+#define PCI_DEVICE_ID_NS_CS5535_VIDEO        0x0030
+
 #define PCI_VENDOR_ID_TSENG		0x100c
 #define PCI_DEVICE_ID_TSENG_W32P_2	0x3202
 #define PCI_DEVICE_ID_TSENG_W32P_b	0x3205

@@ -536,6 +543,9 @@
 #define PCI_DEVICE_ID_AMD_8151_0	0x7454
 #define PCI_DEVICE_ID_AMD_8131_APIC     0x7450
 
+#define PCI_DEVICE_ID_AMD_LX_VIDEO  0x2081
+#define PCI_DEVICE_ID_AMD_LX_AES    0x2082
+
 #define PCI_VENDOR_ID_TRIDENT		0x1023
 #define PCI_DEVICE_ID_TRIDENT_4DWAVE_DX	0x2000
 #define PCI_DEVICE_ID_TRIDENT_4DWAVE_NX	0x2001

Index: linux-2.6.14/arch/i386/kernel/cpu/cyrix.c
===================================================================
@@ -342,6 +342,36 @@ static void __init init_cyrix(struct cpu
 	return;
 }
 
+
+/* This function handles National Semiconductor branded processors */
+
+static void __init init_nsc(struct cpuinfo_x86 *c)
+{
+	int r;
+
+	/* There may be GX1 processors in the wild that are branded
+	 * NSC and not Cyrix.
+	 *
+	 * This function only handles the GX processor, and kicks every
+	 * thing else to the Cyrix init function above - that should
+	 * cover any processors that might have been branded differently
+	 * after NSC aquired Cyrix.
+	 *
+	 * If this breaks your GX1 horribly, please e-mail
+	 * [email protected] to tell us.
+	 */
+
+	/* Handle the GX (Formally known as the GX2) */
+
+	if ((c->x86 == 5) && (c->x86_model == 5)) {
+		r = get_model_name(c);
+		display_cacheinfo(c);
+	}
+	else
+		init_cyrix(c);
+}
+
+
 /*
  * Cyrix CPUs without cpuid or with cpuid not yet enabled can be detected
  * by the fact that they preserve the flags across the division of 5/2.

@@ -422,7 +452,7 @@ int __init cyrix_init_cpu(void)
 static struct cpu_dev nsc_cpu_dev __initdata = {
 	.c_vendor	= "NSC",
 	.c_ident 	= { "Geode by NSC" },
-	.c_init		= init_cyrix,
+	.c_init		= init_nsc,
 	.c_identify	= generic_identify,
 };
 

Index: linux-2.6.14/include/asm-i386/module.h
===================================================================
@@ -52,8 +52,10 @@ struct mod_arch_specific
 #define MODULE_PROC_FAMILY "CYRIXIII "
 #elif defined CONFIG_MVIAC3_2
 #define MODULE_PROC_FAMILY "VIAC3-2 "
-#elif CONFIG_MGEODEGX1
+#elif defined CONFIG_MGEODEGX1
 #define MODULE_PROC_FAMILY "GEODEGX1 "
+#elif defined CONFIG_MGEODE_LX
+#define MODULE_PROC_FAMILY "GEODE "
 #else
 #error unknown processor family
 #endif

Index: linux-2.6.14/arch/i386/kernel/apm.c
===================================================================
@@ -1054,22 +1054,23 @@ static int apm_engage_power_management(u
  
 static int apm_console_blank(int blank)
 {
-	int	error;
-	u_short	state;
+	int error, i;
+	u_short state;
+	u_short dev[3] = { 0x100, 0x1FF, 0x101 };
 
 	state = blank ? APM_STATE_STANDBY : APM_STATE_READY;
-	/* Blank the first display device */
-	error = set_power_state(0x100, state);
-	if ((error != APM_SUCCESS) && (error != APM_NO_ERROR)) {
-		/* try to blank them all instead */
-		error = set_power_state(0x1ff, state);
-		if ((error != APM_SUCCESS) && (error != APM_NO_ERROR))
-			/* try to blank device one instead */
-			error = set_power_state(0x101, state);
+
+	for (i = 0; i < 3; i++) {
+		error = set_power_state(dev[i], state);
+
+		if ((error == APM_SUCCESS) || (error == APM_NO_ERROR))
+			return 1;
+
+		if (error == APM_NOT_ENGAGED)
+			break;
 	}
-	if ((error == APM_SUCCESS) || (error == APM_NO_ERROR))
-		return 1;
-	if (error == APM_NOT_ENGAGED) {
+
+	if (error == APM_NOT_ENGAGED && state != APM_STATE_READY) {
 		static int tried;
 		int eng_error;
 		if (tried++ == 0) {

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Index: linux-2.6.14/drivers/char/hw_random.c
===================================================================
@@ -1,4 +1,9 @@
 /*
+        Added support for the AMD Geode LX RNG
+	(c) Copyright 2004-2005 Advanced Micro Devices, Inc.
+
+	derived from
+
  	Hardware driver for the Intel/AMD/VIA Random Number Generators (RNG)
 	(c) Copyright 2003 Red Hat Inc <[email protected]>
  

@@ -95,6 +100,11 @@ static unsigned int via_data_present (vo
 static u32 via_data_read (void);
 #endif
 
+static int __init geode_init(struct pci_dev *dev);
+static void geode_cleanup(void);
+static unsigned int geode_data_present (void);
+static u32 geode_data_read (void);
+
 struct rng_operations {
 	int (*init) (struct pci_dev *dev);
 	void (*cleanup) (void);

@@ -122,6 +132,7 @@ enum {
 	rng_hw_intel,
 	rng_hw_amd,
 	rng_hw_via,
+	rng_hw_geode,
 };
 
 static struct rng_operations rng_vendor_ops[] = {

@@ -139,6 +150,9 @@ static struct rng_operations rng_vendor_
 	/* rng_hw_via */
 	{ via_init, via_cleanup, via_data_present, via_data_read, 1 },
 #endif
+
+	/* rng_hw_geode */
+	{ geode_init, geode_cleanup, geode_data_present, geode_data_read, 4 }
 };
 
 /*

@@ -159,6 +173,9 @@ static struct pci_device_id rng_pci_tbl[
 	{ 0x8086, 0x244e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel },
 	{ 0x8086, 0x245e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_intel },
 
+	{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_AES,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, rng_hw_geode },
+
 	{ 0, },	/* terminate list */
 };
 MODULE_DEVICE_TABLE (pci, rng_pci_tbl);

@@ -460,6 +477,53 @@ static void via_cleanup(void)
 }
 #endif
 
+/***********************************************************************
+ *
+ * AMD Geode RNG operations
+ *
+ */
+
+static void __iomem *geode_rng_base = NULL;
+
+#define GEODE_RNG_DATA_REG   0x50
+#define GEODE_RNG_STATUS_REG 0x54
+
+static u32 geode_data_read(void)
+{
+	u32 val;
+	assert(geode_rng_base != NULL);
+	val = readl(geode_rng_base + GEODE_RNG_DATA_REG);
+	return val;
+}
+
+static unsigned int geode_data_present(void)
+{
+	u32 val;
+	assert(geode_rng_base != NULL);
+	val = readl(geode_rng_base + GEODE_RNG_STATUS_REG);
+	return val;
+}
+
+static void geode_cleanup(void)
+{
+	iounmap(geode_rng_base);
+  	geode_rng_base = NULL;
+}
+
+static int geode_init(struct pci_dev *dev)
+{
+	unsigned long rng_base = pci_resource_start(dev, 0);
+	if (rng_base == NULL) return 1;
+
+	geode_rng_base = ioremap(rng_base, 0x58);
+
+	if (geode_rng_base == NULL) {
+		printk(KERN_ERR PFX "Cannot ioremap RNG memory\n");
+		return -EBUSY;
+	}
+
+	return 0;
+}
 
 /***********************************************************************
  *

@@ -574,7 +638,7 @@ static int __init rng_init (void)
 
 	DPRINTK ("ENTER\n");
 
-	/* Probe for Intel, AMD RNGs */
+	/* Probe for Intel, AMD, Geode RNGs */
 	for_each_pci_dev(pdev) {
 		ent = pci_match_id(rng_pci_tbl, pdev);
 		if (ent) {

Index: linux-2.6.14/drivers/ide/pci/amd74xx.c
===================================================================
@@ -74,6 +74,7 @@ static struct amd_ide_chip {
 	{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE,	0x50, AMD_UDMA_133 },
 	{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE,	0x50, AMD_UDMA_133 },
 	{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE,	0x50, AMD_UDMA_133 },
+	{ PCI_DEVICE_ID_AMD_CS5536_IDE,             0x40, AMD_UDMA_100 },
 	{ 0 }
 };
 

@@ -491,6 +492,7 @@ static ide_pci_device_t amd74xx_chipsets
 	/* 14 */ DECLARE_NV_DEV("NFORCE-MCP04"),
 	/* 15 */ DECLARE_NV_DEV("NFORCE-MCP51"),
 	/* 16 */ DECLARE_NV_DEV("NFORCE-MCP55"),
+	/* 17 */ DECLARE_AMD_DEV("AMD5536"),
 };
 
 static int __devinit amd74xx_probe(struct pci_dev *dev, const struct pci_device_id *id)

@@ -527,6 +529,7 @@ static struct pci_device_id amd74xx_pci_
 	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE,	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 },
 	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE,	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 15 },
 	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE,	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 16 },
+	{ PCI_VENDOR_ID_AMD,    PCI_DEVICE_ID_AMD_CS5536_IDE, 	        PCI_ANY_ID, PCI_ANY_ID, 0, 0, 17 },
 	{ 0, },
 };
 MODULE_DEVICE_TABLE(pci, amd74xx_pci_tbl);

Index: linux-2.6.14/include/linux/pci_ids.h
===================================================================
@@ -546,6 +546,15 @@
 #define PCI_DEVICE_ID_AMD_LX_VIDEO  0x2081
 #define PCI_DEVICE_ID_AMD_LX_AES    0x2082
 
+#define PCI_DEVICE_ID_AMD_CS5536_ISA    0x2090
+#define PCI_DEVICE_ID_AMD_CS5536_FLASH  0x2091
+#define PCI_DEVICE_ID_AMD_CS5536_AUDIO  0x2093
+#define PCI_DEVICE_ID_AMD_CS5536_OHC    0x2094
+#define PCI_DEVICE_ID_AMD_CS5536_EHC    0x2095
+#define PCI_DEVICE_ID_AMD_CS5536_UDC    0x2096
+#define PCI_DEVICE_ID_AMD_CS5536_UOC    0x2097
+#define PCI_DEVICE_ID_AMD_CS5536_IDE    0x209A
+
 #define PCI_VENDOR_ID_TRIDENT		0x1023
 #define PCI_DEVICE_ID_TRIDENT_4DWAVE_DX	0x2000
 #define PCI_DEVICE_ID_TRIDENT_4DWAVE_NX	0x2001