[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>

5 files changed, 102 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index b1f8000952f3..5873073c9045 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/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,
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index 88695963f587..e26d26e31813 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/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
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index c7cc12a2f269..f28acdcbd6c9 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/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
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
index 47ccc3659e34..10ce6740cc7d 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/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
diff --git a/arch/powerpc/platforms/44x/sequoia.c b/arch/powerpc/platforms/44x/sequoia.c
new file mode 100644
index 000000000000..7d0d9d567d25
--- /dev/null
+++ b/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,
+};