[POWERPC] 85xx: Add initial MPC8544 DS platform files.

This patch provides the basic MPC8544 DS platform code and config.
Follow-up patches will add peripherals such as PCI and SATA.

Signed-off-by: Xianghua Xiao <x.xiao@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

4 files changed, 289 insertions, 1 deletions

diff --git a/arch/powerpc/boot/dts/mpc8544ds.dts b/arch/powerpc/boot/dts/mpc8544ds.dts
new file mode 100644
index 000000000000..6b084605bb4b
--- /dev/null
+++ b/arch/powerpc/boot/dts/mpc8544ds.dts
@@ -0,0 +1,136 @@
+/*
+ * MPC8544 DS Device Tree Source
+ *
+ * Copyright 2007 Freescale Semiconductor Inc.
+ *
+ * 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.
+ */
+
+/ {
+        model = "MPC8544DS";
+        compatible = "MPC8544DS", "MPC85xxDS";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        cpus {
+                #cpus = <1>;
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                PowerPC,8544@0 {
+                        device_type = "cpu";
+                        reg = <0>;
+                        d-cache-line-size = <20>;       // 32 bytes
+                        i-cache-line-size = <20>;       // 32 bytes
+                        d-cache-size = <8000>;          // L1, 32K
+                        i-cache-size = <8000>;          // L1, 32K
+                        timebase-frequency = <0>;
+                        bus-frequency = <0>;
+                        clock-frequency = <0>;
+                        32-bit;
+                };
+        };
+
+        memory {
+                device_type = "memory";
+                reg = <00000000 00000000>;      // Filled by U-Boot
+        };
+
+        soc8544@e0000000 {
+                #address-cells = <1>;
+                #size-cells = <1>;
+                #interrupt-cells = <2>;
+                device_type = "soc";
+                ranges = <0 e0000000 00100000>;
+                reg = <e0000000 00100000>;      // CCSRBAR 1M
+                bus-frequency = <0>;            // Filled out by uboot.
+
+                i2c@3000 {
+                        device_type = "i2c";
+                        compatible = "fsl-i2c";
+                        reg = <3000 100>;
+                        interrupts = <1b 2>;
+                        interrupt-parent = <&mpic>;
+                        dfsrr;
+                };
+
+                mdio@24520 {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        device_type = "mdio";
+                        compatible = "gianfar";
+                        reg = <24520 20>;
+                        phy0: ethernet-phy@0 {
+                                interrupt-parent = <&mpic>;
+                                interrupts = <3a 1>;
+                                reg = <0>;
+                                device_type = "ethernet-phy";
+                        };
+                        phy1: ethernet-phy@1 {
+                                interrupt-parent = <&mpic>;
+                                interrupts = <3a 1>;
+                                reg = <1>;
+                                device_type = "ethernet-phy";
+                        };
+                };
+
+                ethernet@24000 {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        device_type = "network";
+                        model = "TSEC";
+                        compatible = "gianfar";
+                        reg = <24000 1000>;
+                        local-mac-address = [ 00 00 00 00 00 00 ];
+                        interrupts = <d 2 e 2 12 2>;
+                        interrupt-parent = <&mpic>;
+                        phy-handle = <&phy0>;
+                };
+
+                ethernet@26000 {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        device_type = "network";
+                        model = "TSEC";
+                        compatible = "gianfar";
+                        reg = <26000 1000>;
+                        local-mac-address = [ 00 00 00 00 00 00 ];
+                        interrupts = <f 2 10 2 11 2>;
+                        interrupt-parent = <&mpic>;
+                        phy-handle = <&phy1>;
+                };
+
+                serial@4500 {
+                        device_type = "serial";
+                        compatible = "ns16550";
+                        reg = <4500 100>;
+                        clock-frequency = <0>;
+                        interrupts = <1a 2>;
+                        interrupt-parent = <&mpic>;
+                };
+
+                serial@4600 {
+                        device_type = "serial";
+                        compatible = "ns16550";
+                        reg = <4600 100>;
+                        clock-frequency = <0>;
+                        interrupts = <1a 2>;
+                        interrupt-parent = <&mpic>;
+                };
+
+                mpic: pic@40000 {
+                        clock-frequency = <0>;
+                        interrupt-controller;
+                        #address-cells = <0>;
+                        #interrupt-cells = <2>;
+                        reg = <40000 40000>;
+                        built-in;
+                        compatible = "chrp,open-pic";
+                        device_type = "open-pic";
+                        big-endian;
+                };
+        };
+};
diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index eb661ccf2dab..124e2c595972 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -30,6 +30,12 @@ config MPC85xx_MDS
         help
           This option enables support for the MPC85xx MDS board
 
+config MPC8544_DS
+        bool "Freescale MPC8544 DS"
+        select DEFAULT_UIMAGE
+        help
+          This option enables support for the MPC8544 DS board
+
 endchoice
 
 config MPC8540
@@ -47,7 +53,8 @@ config MPC85xx
         bool
         select PPC_UDBG_16550
         select PPC_INDIRECT_PCI
-        default y if MPC8540_ADS || MPC85xx_CDS || MPC8560_ADS || MPC85xx_MDS
+        default y if MPC8540_ADS || MPC85xx_CDS || MPC8560_ADS \
+                || MPC85xx_MDS || MPC8544_DS
 
 config PPC_INDIRECT_PCI_BE
         bool
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index 4e63917ada9d..4e02cbb14cf7 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -5,4 +5,5 @@ obj-$(CONFIG_PPC_85xx)	+= misc.o pci.o
 obj-$(CONFIG_MPC8540_ADS) += mpc85xx_ads.o
 obj-$(CONFIG_MPC8560_ADS) += mpc85xx_ads.o
 obj-$(CONFIG_MPC85xx_CDS) += mpc85xx_cds.o
+obj-$(CONFIG_MPC8544_DS)  += mpc8544_ds.o
 obj-$(CONFIG_MPC85xx_MDS) += mpc85xx_mds.o
diff --git a/arch/powerpc/platforms/85xx/mpc8544_ds.c b/arch/powerpc/platforms/85xx/mpc8544_ds.c
new file mode 100644
index 000000000000..2867f85e6325
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/mpc8544_ds.c
@@ -0,0 +1,144 @@
+/*
+ * MPC8544 DS Board Setup
+ *
+ * Author Xianghua Xiao (x.xiao@freescale.com)
+ * Copyright 2007 Freescale Semiconductor Inc.
+ *
+ * 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/stddef.h>
+#include <linux/kernel.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/mpc85xx.h>
+#include <mm/mmu_decl.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/mpic.h>
+#include <asm/i8259.h>
+
+#include <sysdev/fsl_soc.h>
+#include "mpc85xx.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
+#else
+#define DBG(fmt, args...)
+#endif
+
+
+void __init mpc8544_ds_pic_init(void)
+{
+        struct mpic *mpic;
+        struct resource r;
+        struct device_node *np = NULL;
+#ifdef CONFIG_PPC_I8259
+        struct device_node *cascade_node = NULL;
+        int cascade_irq;
+#endif
+
+        np = of_find_node_by_type(np, "open-pic");
+
+        if (np == NULL) {
+                printk(KERN_ERR "Could not find open-pic node\n");
+                return;
+        }
+
+        if (of_address_to_resource(np, 0, &r)) {
+                printk(KERN_ERR "Failed to map mpic register space\n");
+                of_node_put(np);
+                return;
+        }
+
+        /* Alloc mpic structure and per isu has 16 INT entries. */
+        mpic = mpic_alloc(np, r.start,
+                          MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
+                          16, 64, " OPENPIC     ");
+        BUG_ON(mpic == NULL);
+
+        /*
+         * 48 Internal Interrupts
+         */
+        mpic_assign_isu(mpic, 0, r.start + 0x10200);
+        mpic_assign_isu(mpic, 1, r.start + 0x10400);
+        mpic_assign_isu(mpic, 2, r.start + 0x10600);
+
+        /*
+         * 16 External interrupts
+         */
+        mpic_assign_isu(mpic, 3, r.start + 0x10000);
+
+        mpic_init(mpic);
+
+#ifdef CONFIG_PPC_I8259
+        /* Initialize the i8259 controller */
+        for_each_node_by_type(np, "interrupt-controller")
+            if (device_is_compatible(np, "chrp,iic")) {
+                cascade_node = np;
+                break;
+        }
+
+        if (cascade_node == NULL) {
+                printk(KERN_DEBUG "Could not find i8259 PIC\n");
+                return;
+        }
+
+        cascade_irq = irq_of_parse_and_map(cascade_node, 0);
+        if (cascade_irq == NO_IRQ) {
+                printk(KERN_ERR "Failed to map cascade interrupt\n");
+                return;
+        }
+
+        DBG("mpc8544ds: cascade mapped to irq %d\n", cascade_irq);
+
+        i8259_init(cascade_node, 0);
+        of_node_put(cascade_node);
+
+        set_irq_chained_handler(cascade_irq, mpc8544_8259_cascade);
+#endif  /* CONFIG_PPC_I8259 */
+}
+
+
+/*
+ * Setup the architecture
+ */
+static void __init mpc8544_ds_setup_arch(void)
+{
+        if (ppc_md.progress)
+                ppc_md.progress("mpc8544_ds_setup_arch()", 0);
+
+        printk("MPC8544 DS board from Freescale Semiconductor\n");
+}
+
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init mpc8544_ds_probe(void)
+{
+        unsigned long root = of_get_flat_dt_root();
+
+        return of_flat_dt_is_compatible(root, "MPC8544DS");
+}
+
+define_machine(mpc8544_ds) {
+        .name                   = "MPC8544 DS",
+        .probe                  = mpc8544_ds_probe,
+        .setup_arch             = mpc8544_ds_setup_arch,
+        .init_IRQ               = mpc8544_ds_pic_init,
+        .get_irq                = mpic_get_irq,
+        .restart                = mpc85xx_restart,
+        .calibrate_decr         = generic_calibrate_decr,
+        .progress               = udbg_progress,
+};