ppc32: (Updated) Pegasos support

Index: linux-work/arch/ppc/syslib/prom_init.c
===================================================================
@@ -810,6 +810,9 @@
 	char *p, *d;
  	unsigned long phys;
 	void *result[3];
+	char model[32];
+	phandle node;
+	int rc;
 
  	/* Default */
  	phys = (unsigned long) &_stext;

@@ -866,11 +869,20 @@
 
 	klimit = (char *) (mem - offset);
 
-	/* If we are already running at 0xc0000000, we assume we were
-	 * loaded by an OF bootloader which did set a BAT for us.
-	 * This breaks OF translate so we force phys to be 0.
-	 */
-	if (offset == 0) {
+	node = call_prom("finddevice", 1, 1, "/");
+	rc = call_prom("getprop", 4, 1, node, "model", model, sizeof(model));
+	if (rc > 0 && !strncmp (model, "Pegasos", 7)
+		&& strncmp (model, "Pegasos2", 8)) {
+		/* Pegasos 1 has a broken translate method in the OF,
+		 * and furthermore the BATs are mapped 1:1 so the phys
+		 * address calculated above is correct, so let's use
+		 * it directly.
+		 */
+	} else if (offset == 0) {
+		/* If we are already running at 0xc0000000, we assume we were
+	 	 * loaded by an OF bootloader which did set a BAT for us.
+	 	 * This breaks OF translate so we force phys to be 0.
+	 	 */
 		prom_print("(already at 0xc0000000) phys=0\n");
 		phys = 0;
 	} else if ((int) call_prom("getprop", 4, 1, prom_chosen, "mmu",

Index: linux-work/arch/ppc/platforms/chrp_pci.c
===================================================================
@@ -97,8 +97,10 @@
 rtas_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
 		 int len, u32 *val)
 {
+	struct pci_controller *hose = bus->sysdata;
 	unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8)
-		| ((bus->number & 0xff) << 16);
+		| (((bus->number - hose->first_busno) & 0xff) << 16)
+		| (hose->index << 24);
         unsigned long ret = ~0UL;
 	int rval;
 

@@ -111,8 +113,10 @@
 rtas_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
 		  int len, u32 val)
 {
+	struct pci_controller *hose = bus->sysdata;
 	unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8)
-		| ((bus->number & 0xff) << 16);
+		| (((bus->number - hose->first_busno) & 0xff) << 16)
+		| (hose->index << 24);
 	int rval;
 
 	rval = call_rtas("write-pci-config", 3, 1, NULL, addr, len, val);

@@ -186,6 +190,22 @@
 	iounmap(reg);
 }
 
+/* Marvell Discovery II based Pegasos 2 */
+static void __init setup_peg2(struct pci_controller *hose, struct device_node *dev)
+{
+	struct device_node *root = find_path_device("/");
+	struct device_node *rtas;
+
+	rtas = of_find_node_by_name (root, "rtas");
+	if (rtas) {
+		hose->ops = &rtas_pci_ops;
+	} else {
+		printk ("RTAS supporting Pegasos OF not found, please upgrade"
+			" your firmware\n");
+	}
+	pci_assign_all_busses = 1;
+}
+
 void __init
 chrp_find_bridges(void)
 {

@@ -195,7 +215,7 @@
 	struct pci_controller *hose;
 	unsigned int *dma;
 	char *model, *machine;
-	int is_longtrail = 0, is_mot = 0;
+	int is_longtrail = 0, is_mot = 0, is_pegasos = 0;
 	struct device_node *root = find_path_device("/");
 
 	/*

@@ -207,6 +227,10 @@
 	if (machine != NULL) {
 		is_longtrail = strncmp(machine, "IBM,LongTrail", 13) == 0;
 		is_mot = strncmp(machine, "MOT", 3) == 0;
+		if (strncmp(machine, "Pegasos2", 8) == 0)
+			is_pegasos = 2;
+		else if (strncmp(machine, "Pegasos", 7) == 0)
+			is_pegasos = 1;
 	}
 	for (dev = root->child; dev != NULL; dev = dev->sibling) {
 		if (dev->type == NULL || strcmp(dev->type, "pci") != 0)

@@ -257,6 +281,10 @@
 			hose->ops = &gg2_pci_ops;
 			hose->cfg_data = p;
 			gg2_pci_config_base = p;
+		} else if (is_pegasos == 1) {
+			setup_indirect_pci(hose, 0xfec00cf8, 0xfee00cfc);
+		} else if (is_pegasos == 2) {
+			setup_peg2(hose, dev);
 		} else {
 			printk("No methods for %s (model %s), using RTAS\n",
 			       dev->full_name, model);

@@ -275,5 +303,7 @@
 		}
 	}
 
-	ppc_md.pcibios_fixup = chrp_pcibios_fixup;
+	/* Do not fixup interrupts from OF tree on pegasos */
+	if (is_pegasos == 0)
+		ppc_md.pcibios_fixup = chrp_pcibios_fixup;
 }

Index: linux-work/arch/ppc/platforms/chrp_time.c
===================================================================
@@ -41,6 +41,8 @@
 	int base;
 
 	rtcs = find_compatible_devices("rtc", "pnpPNP,b00");
+	if (rtcs == NULL)
+		rtcs = find_compatible_devices("rtc", "ds1385-rtc");
 	if (rtcs == NULL || rtcs->addrs == NULL)
 		return 0;
 	base = rtcs->addrs[0].address;

124 lines not on this page · raw message

Index: linux-work/include/asm-ppc/processor.h
===================================================================
@@ -34,6 +34,7 @@
 /* these are arbitrary */
 #define _CHRP_Motorola	0x04	/* motorola chrp, the cobra */
 #define _CHRP_IBM	0x05	/* IBM chrp, the longtrail and longtrail 2 */
+#define _CHRP_Pegasos	0x06	/* Genesi/bplan's Pegasos and Pegasos2 */
 
 #define _GLOBAL(n)\
 	.stabs __stringify(n:F-1),N_FUN,0,0,n;\

@@ -54,6 +55,7 @@
 
 /* what kind of prep workstation we are */
 extern int _prep_type;
+extern int _chrp_type;
 
 /*
  * This is used to identify the board type from a given PReP board

diff -puN arch/ppc/platforms/chrp_pci.c~ppc32-updated-pegasos-support arch/ppc/platforms/chrp_pci.c
@@ -304,6 +304,6 @@ chrp_find_bridges(void)
 	}
 
 	/* Do not fixup interrupts from OF tree on pegasos */
-	if (is_pegasos != 0)
+	if (is_pegasos == 0)
 		ppc_md.pcibios_fixup = chrp_pcibios_fixup;
 }