powerpc/4xx: Sam440ep support

The Sam440ep is an high customizable general purpose mini-itx board,
based on the AMCC 440EP and with a LatticeXP FPGA onboard.

It's poduced by ACube Systems Srl (Bassano del Grappa, Italy),
http://www.acube-systems.biz.

Signed-off-by: Giuseppe Coviello <gicoviello@gmail.com>
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 6abe91357eee..bee49ca704ef 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -17,6 +17,15 @@ config EBONY
         help
           This option enables support for the IBM PPC440GP evaluation board.
 
+config SAM440EP
+        bool "Sam440ep"
+        depends on 44x
+        default n
+        select 440EP
+        select PCI
+        help
+          This option enables support for the ACube Sam440ep board.
+
 config SEQUOIA
         bool "Sequoia"
         depends on 44x
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
index 774165f9acdd..4e71e77f9a23 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -3,6 +3,7 @@ obj-$(CONFIG_EBONY)	+= ebony.o
 obj-$(CONFIG_TAISHAN)   += taishan.o
 obj-$(CONFIG_BAMBOO)    += bamboo.o
 obj-$(CONFIG_YOSEMITE)  += bamboo.o
+obj-$(CONFIG_SAM440EP)  += sam440ep.o
 obj-$(CONFIG_SEQUOIA)   += sequoia.o
 obj-$(CONFIG_KATMAI)    += katmai.o
 obj-$(CONFIG_RAINIER)   += rainier.o
diff --git a/arch/powerpc/platforms/44x/sam440ep.c b/arch/powerpc/platforms/44x/sam440ep.c
new file mode 100644
index 000000000000..47f10e647735
--- /dev/null
+++ b/arch/powerpc/platforms/44x/sam440ep.c
@@ -0,0 +1,79 @@
+/*
+ * Sam440ep board specific routines based off bamboo.c code
+ * original copyrights below
+ *
+ * Wade Farnsworth <wfarnsworth@mvista.com>
+ * Copyright 2004 MontaVista Software Inc.
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ * Copyright 2007 IBM Corporation
+ *
+ * Modified from bamboo.c for sam440ep:
+ * Copyright 2008 Giuseppe Coviello <gicoviello@gmail.com>
+ *
+ * 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 <asm/ppc4xx.h>
+#include <linux/i2c.h>
+
+static __initdata struct of_device_id sam440ep_of_bus[] = {
+        { .compatible = "ibm,plb4", },
+        { .compatible = "ibm,opb", },
+        { .compatible = "ibm,ebc", },
+        {},
+};
+
+static int __init sam440ep_device_probe(void)
+{
+        of_platform_bus_probe(NULL, sam440ep_of_bus, NULL);
+
+        return 0;
+}
+machine_device_initcall(sam440ep, sam440ep_device_probe);
+
+static int __init sam440ep_probe(void)
+{
+        unsigned long root = of_get_flat_dt_root();
+
+        if (!of_flat_dt_is_compatible(root, "acube,sam440ep"))
+                return 0;
+
+        ppc_pci_flags = PPC_PCI_REASSIGN_ALL_RSRC;
+
+        return 1;
+}
+
+define_machine(sam440ep) {
+        .name                   = "Sam440ep",
+        .probe                  = sam440ep_probe,
+        .progress               = udbg_progress,
+        .init_IRQ               = uic_init_tree,
+        .get_irq                = uic_get_irq,
+        .restart                = ppc4xx_reset_system,
+        .calibrate_decr         = generic_calibrate_decr,
+};
+
+static struct i2c_board_info sam440ep_rtc_info = {
+        .type = "m41st85",
+        .addr = 0x68,
+        .irq = -1,
+};
+
+static int sam440ep_setup_rtc(void)
+{
+        return i2c_register_board_info(0, &sam440ep_rtc_info, 1);
+}
+machine_device_initcall(sam440ep, sam440ep_setup_rtc);