[POWERPC] 4xx: Base support for 440GX Taishan eval board

This patch adds base support for the AMCC Taishan 440GX evaluation
board.

Signed-off-by: Hugh Blemings <hugh@blemings.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

3 files changed, 89 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index f65fa10ef427..1bf042498f6e 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -23,6 +23,16 @@ config SEQUOIA
         help
           This option enables support for the AMCC PPC440EPX evaluation board.
 
+config TAISHAN
+        bool "Taishan"
+        depends on 44x
+        default n
+        select 440GX
+        select PCI
+        help
+          This option enables support for the AMCC PPC440GX "Taishan"
+          evaluation board.
+
 #config LUAN
 #       bool "Luan"
 #       depends on 44x
@@ -59,6 +69,10 @@ config 440GP
 
 config 440GX
         bool
+        select IBM_NEW_EMAC_EMAC4
+        select IBM_NEW_EMAC_RGMII
+        select IBM_NEW_EMAC_ZMII #test only
+        select IBM_NEW_EMAC_TAH  #test only
 
 config 440SP
         bool
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
index 10ce6740cc7d..8b05589471d2 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -1,4 +1,5 @@
 obj-$(CONFIG_44x)       := misc_44x.o
 obj-$(CONFIG_EBONY)     += ebony.o
+obj-$(CONFIG_TAISHAN)   += taishan.o
 obj-$(CONFIG_BAMBOO) += bamboo.o
 obj-$(CONFIG_SEQUOIA)   += sequoia.o
diff --git a/arch/powerpc/platforms/44x/taishan.c b/arch/powerpc/platforms/44x/taishan.c
new file mode 100644
index 000000000000..e3b7c7023336
--- /dev/null
+++ b/arch/powerpc/platforms/44x/taishan.c
@@ -0,0 +1,74 @@
+/*
+ * Taishan board specific routines based off ebony.c code
+ * original copyrights below
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ *
+ * Modified from ebony.c for taishan:
+ * Copyright 2007 Hugh Blemings <hugh@au.ibm.com>, 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 <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/pci-bridge.h>
+
+#include "44x.h"
+
+static struct of_device_id taishan_of_bus[] = {
+        { .compatible = "ibm,plb4", },
+        { .compatible = "ibm,opb", },
+        { .compatible = "ibm,ebc", },
+        {},
+};
+
+static int __init taishan_device_probe(void)
+{
+        if (!machine_is(taishan))
+                return 0;
+
+        of_platform_bus_probe(NULL, taishan_of_bus, NULL);
+
+        return 0;
+}
+device_initcall(taishan_device_probe);
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init taishan_probe(void)
+{
+        unsigned long root = of_get_flat_dt_root();
+
+        if (!of_flat_dt_is_compatible(root, "amcc,taishan"))
+                return 0;
+
+        return 1;
+}
+
+define_machine(taishan) {
+        .name                   = "Taishan",
+        .probe                  = taishan_probe,
+        .progress               = udbg_progress,
+        .init_IRQ               = uic_init_tree,
+        .get_irq                = uic_get_irq,
+        .restart                = ppc44x_reset_system,
+        .calibrate_decr         = generic_calibrate_decr,
+};