[POWERPC] PowerPC 440EPx: Sequoia board support

AMCC PPC440EPx Sequoia board support.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

arch/powerpc/kernel/cputable.c

@@ -1132,6 +1132,24 @@ static struct cpu_spec cpu_specs[] = {
 		.dcache_bsize		= 32,
 		.platform		= "ppc440",
 	},
+	{ /* 440EPX */
+		.pvr_mask		= 0xf0000ffb,
+		.pvr_value		= 0x200008D0,
+		.cpu_name		= "440EPX",
+		.cpu_features		= CPU_FTRS_44X,
+		.cpu_user_features	= COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
+		.icache_bsize		= 32,
+		.dcache_bsize		= 32,
+	},
+	{ /* 440GRX */
+		.pvr_mask		= 0xf0000ffb,
+		.pvr_value		= 0x200008D8,
+		.cpu_name		= "440GRX",
+		.cpu_features		= CPU_FTRS_44X,
+		.cpu_user_features	= COMMON_USER_BOOKE,
+		.icache_bsize		= 32,
+		.dcache_bsize		= 32,
+	},
 	{	/* 440GP Rev. B */
 		.pvr_mask		= 0xf0000fff,
 		.pvr_value		= 0x40000440,

arch/powerpc/kernel/head_44x.S

@@ -217,7 +217,7 @@ skpinv:	addi	r4,r4,1				/* Increment */
 	lis	r4,interrupt_base@h	/* IVPR only uses the high 16-bits */
 	mtspr	SPRN_IVPR,r4
 
-#ifdef CONFIG_440EP
+#if defined(CONFIG_440EP) || defined(CONFIG_440EPX)
 	/* Clear DAPUIB flag in CCR0 (enable APU between CPU and FPU) */
 	mfspr	r2,SPRN_CCR0
 	lis	r3,0xffef

arch/powerpc/platforms/44x/Kconfig

@@ -14,6 +14,14 @@ config EBONY
 	help
 	  This option enables support for the IBM PPC440GP evaluation board.
 
+config SEQUOIA
+	bool "Sequoia"
+	depends on 44x
+	default n
+	select 440EPX
+	help
+	  This option enables support for the AMCC PPC440EPX evaluation board.
+
 #config LUAN
 #	bool "Luan"
 #	depends on 44x
@@ -37,6 +45,13 @@ config 440EP
 	select IBM440EP_ERR42
 #	select IBM_NEW_EMAC_ZMII
 
+config 440EPX
+	bool
+	select PPC_FPU
+# Disabled until the new EMAC Driver is merged.
+#	select IBM_NEW_EMAC_EMAC4
+#	select IBM_NEW_EMAC_ZMII
+
 config 440GP
 	bool
 # Disabled until the new EMAC Driver is merged.
@@ -50,7 +65,7 @@ config 440SP
 
 config 440A
 	bool
-	depends on 440GX
+	depends on 440GX || 440EPX
 	default y
 
 # 44x errata/workaround config symbols, selected by the CPU models above

arch/powerpc/platforms/44x/Makefile

@@ -1,3 +1,4 @@
 obj-$(CONFIG_44x)	:= misc_44x.o
 obj-$(CONFIG_EBONY)	+= ebony.o
 obj-$(CONFIG_BAMBOO) += bamboo.o
+obj-$(CONFIG_SEQUOIA)	+= sequoia.o

arch/powerpc/platforms/44x/sequoia.c

@@ -0,0 +1,66 @@
+/*
+ * Sequoia board specific routines
+ *
+ * Valentine Barshak <vbarshak@ru.mvista.com>
+ * Copyright 2007 MontaVista Software Inc.
+ *
+ * Based on the Bamboo code by
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ * Copyright 2007 IBM Corporation
+ *
+ * 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;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+#include <linux/init.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/of_platform.h>
+#include "44x.h"
+
+static struct of_device_id sequoia_of_bus[] = {
+	{ .compatible = "ibm,plb4", },
+	{ .compatible = "ibm,opb", },
+	{ .compatible = "ibm,ebc", },
+	{},
+};
+
+static int __init sequoia_device_probe(void)
+{
+	if (!machine_is(sequoia))
+		return 0;
+
+	of_platform_bus_probe(NULL, sequoia_of_bus, NULL);
+
+	return 0;
+}
+device_initcall(sequoia_device_probe);
+
+static int __init sequoia_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "amcc,sequoia"))
+		return 0;
+
+	return 1;
+}
+
+static void __init sequoia_setup_arch(void)
+{
+}
+
+define_machine(sequoia) {
+	.name 				= "Sequoia",
+	.probe 				= sequoia_probe,
+	.setup_arch			= sequoia_setup_arch,
+	.progress 			= udbg_progress,
+	.init_IRQ 			= uic_init_tree,
+	.get_irq 			= uic_get_irq,
+	.restart			= ppc44x_reset_system,
+	.calibrate_decr			= generic_calibrate_decr,
+};