powerpc/47x: Add support for the new IBM currituck platform
authorTony Breeds <tony@bakeyournoodle.com>
Wed, 30 Nov 2011 21:39:24 +0000 (21:39 +0000)
committerJosh Boyer <jwboyer@gmail.com>
Fri, 9 Dec 2011 12:51:40 +0000 (07:51 -0500)
Based on original work by David 'Shaggy' Kleikamp.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
arch/powerpc/boot/Makefile
arch/powerpc/boot/dts/currituck.dts [new file with mode: 0644]
arch/powerpc/boot/treeboot-currituck.c [new file with mode: 0644]
arch/powerpc/boot/wrapper
arch/powerpc/configs/44x/currituck_defconfig [new file with mode: 0644]
arch/powerpc/platforms/44x/Kconfig
arch/powerpc/platforms/44x/Makefile
arch/powerpc/platforms/44x/currituck.c [new file with mode: 0644]

index 72ee8c1..ff0057f 100644 (file)
@@ -45,6 +45,7 @@ $(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=405
 $(obj)/cuboot-acadia.o: BOOTCFLAGS += -mcpu=405
 $(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
 $(obj)/treeboot-iss4xx.o: BOOTCFLAGS += -mcpu=405
+$(obj)/treeboot-currituck.o: BOOTCFLAGS += -mcpu=405
 $(obj)/virtex405-head.o: BOOTAFLAGS += -mcpu=405
 
 
@@ -79,7 +80,8 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c
                cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
                virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
                cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c \
-               gamecube-head.S gamecube.c wii-head.S wii.c treeboot-iss4xx.c
+               gamecube-head.S gamecube.c wii-head.S wii.c treeboot-iss4xx.c \
+               treeboot-currituck.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -212,6 +214,7 @@ image-$(CONFIG_WARP)                        += cuImage.warp
 image-$(CONFIG_YOSEMITE)               += cuImage.yosemite
 image-$(CONFIG_ISS4xx)                 += treeImage.iss4xx \
                                           treeImage.iss4xx-mpic
+image-$(CONFIG_CURRITUCK)                      += treeImage.currituck
 
 # Board ports in arch/powerpc/platform/8xx/Kconfig
 image-$(CONFIG_MPC86XADS)              += cuImage.mpc866ads
diff --git a/arch/powerpc/boot/dts/currituck.dts b/arch/powerpc/boot/dts/currituck.dts
new file mode 100644 (file)
index 0000000..b801dd0
--- /dev/null
@@ -0,0 +1,237 @@
+/*
+ * Device Tree Source for IBM Embedded PPC 476 Platform
+ *
+ * Copyright © 2011 Tony Breeds IBM Corporation
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/dts-v1/;
+
+/memreserve/ 0x01f00000 0x00100000;    // spin table
+
+/ {
+       #address-cells = <2>;
+       #size-cells = <2>;
+       model = "ibm,currituck";
+       compatible = "ibm,currituck";
+       dcr-parent = <&{/cpus/cpu@0}>;
+
+       aliases {
+               serial0 = &UART0;
+       };
+
+       cpus {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               cpu@0 {
+                       device_type = "cpu";
+                       model = "PowerPC,476";
+                       reg = <0>;
+                       clock-frequency = <1600000000>; // 1.6 GHz
+                       timebase-frequency = <100000000>; // 100Mhz
+                       i-cache-line-size = <32>;
+                       d-cache-line-size = <32>;
+                       i-cache-size = <32768>;
+                       d-cache-size = <32768>;
+                       dcr-controller;
+                       dcr-access-method = "native";
+                       status = "ok";
+               };
+               cpu@1 {
+                       device_type = "cpu";
+                       model = "PowerPC,476";
+                       reg = <1>;
+                       clock-frequency = <1600000000>; // 1.6 GHz
+                       timebase-frequency = <100000000>; // 100Mhz
+                       i-cache-line-size = <32>;
+                       d-cache-line-size = <32>;
+                       i-cache-size = <32768>;
+                       d-cache-size = <32768>;
+                       dcr-controller;
+                       dcr-access-method = "native";
+                       status = "disabled";
+                       enable-method = "spin-table";
+                       cpu-release-addr = <0x0 0x01f00000>;
+               };
+       };
+
+       memory {
+               device_type = "memory";
+               reg = <0x0 0x0 0x0 0x0>; // filled in by zImage
+       };
+
+       MPIC: interrupt-controller {
+               compatible = "chrp,open-pic";
+               interrupt-controller;
+               dcr-reg = <0xffc00000 0x00040000>;
+               #address-cells = <0>;
+               #size-cells = <0>;
+               #interrupt-cells = <2>;
+
+       };
+
+       plb {
+               compatible = "ibm,plb6";
+               #address-cells = <2>;
+               #size-cells = <2>;
+               ranges;
+               clock-frequency = <200000000>; // 200Mhz
+
+               POB0: opb {
+                       compatible = "ibm,opb-4xx", "ibm,opb";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+                       /* Wish there was a nicer way of specifying a full
+                        * 32-bit range
+                        */
+                       ranges = <0x00000000 0x00000200 0x00000000 0x80000000
+                                 0x80000000 0x00000200 0x80000000 0x80000000>;
+                       clock-frequency = <100000000>;
+
+                       UART0: serial@10000000 {
+                               device_type = "serial";
+                               compatible = "ns16750", "ns16550";
+                               reg = <0x10000000 0x00000008>;
+                               virtual-reg = <0xe1000000>;
+                               clock-frequency = <1851851>; // PCIe refclk/MCGC0_CTL[UART]
+                               current-speed = <115200>;
+                               interrupt-parent = <&MPIC>;
+                               interrupts = <34 2>;
+                       };
+
+                       IIC0: i2c@00000000 {
+                               compatible = "ibm,iic-currituck", "ibm,iic";
+                               reg = <0x0 0x00000014>;
+                               interrupt-parent = <&MPIC>;
+                               interrupts = <79 2>;
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                                rtc@68 {
+                                        compatible = "stm,m41t80", "m41st85";
+                                        reg = <0x68>;
+                                };
+                       };
+               };
+
+               PCIE0: pciex@10100000000 {              // 4xGBIF1
+                       device_type = "pci";
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       compatible = "ibm,plb-pciex-476fpe", "ibm,plb-pciex";
+                       primary;
+                       port = <0x0>; /* port number */
+                       reg = <0x00000101 0x00000000 0x0 0x10000000             /* Config space access */
+                              0x00000100 0x00000000 0x0 0x00001000>;   /* UTL Registers space access */
+                       dcr-reg = <0x80 0x20>;
+
+//                                pci_space  < pci_addr          > < cpu_addr          > < size       >
+                       ranges = <0x02000000 0x00000000 0x80000000 0x00000110 0x80000000 0x0 0x80000000
+                                 0x01000000 0x0        0x0        0x00000140 0x0        0x0 0x00010000>;
+
+                       /* Inbound starting at 0 to memsize filled in by zImage */
+                       dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x0>;
+
+                       /* This drives busses 0 to 0xf */
+                       bus-range = <0x0 0xf>;
+
+                       /* Legacy interrupts (note the weird polarity, the bridge seems
+                        * to invert PCIe legacy interrupts).
+                        * We are de-swizzling here because the numbers are actually for
+                        * port of the root complex virtual P2P bridge. But I want
+                        * to avoid putting a node for it in the tree, so the numbers
+                        * below are basically de-swizzled numbers.
+                        * The real slot is on idsel 0, so the swizzling is 1:1
+                        */
+                       interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+                       interrupt-map = <
+                               0x0 0x0 0x0 0x1 &MPIC 46 0x2 /* int A */
+                               0x0 0x0 0x0 0x2 &MPIC 47 0x2 /* int B */
+                               0x0 0x0 0x0 0x3 &MPIC 48 0x2 /* int C */
+                               0x0 0x0 0x0 0x4 &MPIC 49 0x2 /* int D */>;
+               };
+
+               PCIE1: pciex@30100000000 {              // 4xGBIF0
+                       device_type = "pci";
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       compatible = "ibm,plb-pciex-476fpe", "ibm,plb-pciex";
+                       primary;
+                       port = <0x1>; /* port number */
+                       reg = <0x00000301 0x00000000 0x0 0x10000000             /* Config space access */
+                              0x00000300 0x00000000 0x0 0x00001000>;   /* UTL Registers space access */
+                       dcr-reg = <0x60 0x20>;
+
+                       ranges = <0x02000000 0x00000000 0x80000000 0x00000310 0x80000000 0x0 0x80000000
+                                 0x01000000 0x0        0x0        0x00000340 0x0        0x0 0x00010000>;
+
+                       /* Inbound starting at 0 to memsize filled in by zImage */
+                       dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x0>;
+
+                       /* This drives busses 0 to 0xf */
+                       bus-range = <0x0 0xf>;
+
+                       /* Legacy interrupts (note the weird polarity, the bridge seems
+                        * to invert PCIe legacy interrupts).
+                        * We are de-swizzling here because the numbers are actually for
+                        * port of the root complex virtual P2P bridge. But I want
+                        * to avoid putting a node for it in the tree, so the numbers
+                        * below are basically de-swizzled numbers.
+                        * The real slot is on idsel 0, so the swizzling is 1:1
+                        */
+                       interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+                       interrupt-map = <
+                               0x0 0x0 0x0 0x1 &MPIC 38 0x2 /* int A */
+                               0x0 0x0 0x0 0x2 &MPIC 39 0x2 /* int B */
+                               0x0 0x0 0x0 0x3 &MPIC 40 0x2 /* int C */
+                               0x0 0x0 0x0 0x4 &MPIC 41 0x2 /* int D */>;
+               };
+
+               PCIE2: pciex@38100000000 {              // 2xGBIF0
+                       device_type = "pci";
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       #address-cells = <3>;
+                       compatible = "ibm,plb-pciex-476fpe", "ibm,plb-pciex";
+                       primary;
+                       port = <0x2>; /* port number */
+                       reg = <0x00000381 0x00000000 0x0 0x10000000             /* Config space access */
+                              0x00000380 0x00000000 0x0 0x00001000>;   /* UTL Registers space access */
+                       dcr-reg = <0xA0 0x20>;
+
+                       ranges = <0x02000000 0x00000000 0x80000000 0x00000390 0x80000000 0x0 0x80000000
+                                 0x01000000 0x0        0x0        0x000003C0 0x0        0x0 0x00010000>;
+
+                       /* Inbound starting at 0 to memsize filled in by zImage */
+                       dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x0>;
+
+                       /* This drives busses 0 to 0xf */
+                       bus-range = <0x0 0xf>;
+
+                       /* Legacy interrupts (note the weird polarity, the bridge seems
+                        * to invert PCIe legacy interrupts).
+                        * We are de-swizzling here because the numbers are actually for
+                        * port of the root complex virtual P2P bridge. But I want
+                        * to avoid putting a node for it in the tree, so the numbers
+                        * below are basically de-swizzled numbers.
+                        * The real slot is on idsel 0, so the swizzling is 1:1
+                        */
+                       interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+                       interrupt-map = <
+                               0x0 0x0 0x0 0x1 &MPIC 54 0x2 /* int A */
+                               0x0 0x0 0x0 0x2 &MPIC 55 0x2 /* int B */
+                               0x0 0x0 0x0 0x3 &MPIC 56 0x2 /* int C */
+                               0x0 0x0 0x0 0x4 &MPIC 57 0x2 /* int D */>;
+               };
+
+       };
+
+       chosen {
+               linux,stdout-path = &UART0;
+       };
+};
diff --git a/arch/powerpc/boot/treeboot-currituck.c b/arch/powerpc/boot/treeboot-currituck.c
new file mode 100644 (file)
index 0000000..925ae43
--- /dev/null
@@ -0,0 +1,119 @@
+/*
+ * Copyright © 2011 Tony Breeds IBM Corporation
+ *
+ * Based on earlier code:
+ *   Copyright (C) Paul Mackerras 1997.
+ *
+ *   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, 2004 Zultys Technologies
+ *
+ *    Copyright 2007 David Gibson, IBM Corporation.
+ *    Copyright 2010 Ben. Herrenschmidt, IBM Corporation.
+ *    Copyright © 2011 David Kleikamp 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 <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "elf.h"
+#include "string.h"
+#include "stdio.h"
+#include "page.h"
+#include "ops.h"
+#include "reg.h"
+#include "io.h"
+#include "dcr.h"
+#include "4xx.h"
+#include "44x.h"
+#include "libfdt.h"
+
+BSS_STACK(4096);
+
+#define MAX_RANKS      0x4
+#define DDR3_MR0CF     0x80010011U
+
+static unsigned long long ibm_currituck_memsize;
+static unsigned long long ibm_currituck_detect_memsize(void)
+{
+       u32 reg;
+       unsigned i;
+       unsigned long long memsize = 0;
+
+       for(i = 0; i < MAX_RANKS; i++){
+               reg = mfdcrx(DDR3_MR0CF + i);
+
+               if (!(reg & 1))
+                       continue;
+
+               reg &= 0x0000f000;
+               reg >>= 12;
+               memsize += (0x800000ULL << reg);
+       }
+
+       return memsize;
+}
+
+static void ibm_currituck_fixups(void)
+{
+       void *devp = finddevice("/");
+       u32 dma_ranges[7];
+
+       dt_fixup_memory(0x0ULL,  ibm_currituck_memsize);
+
+       while ((devp = find_node_by_devtype(devp, "pci"))) {
+               if (getprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)) < 0) {
+                       printf("%s: Failed to get dma-ranges\r\n", __func__);
+                       continue;
+               }
+
+               dma_ranges[5] = ibm_currituck_memsize >> 32;
+               dma_ranges[6] = ibm_currituck_memsize & 0xffffffffUL;
+
+               setprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges));
+       }
+}
+
+#define SPRN_PIR       0x11E   /* Processor Indentification Register */
+void platform_init(void)
+{
+       unsigned long end_of_ram, avail_ram;
+       u32 pir_reg;
+       int node, size;
+       const u32 *timebase;
+
+       ibm_currituck_memsize = ibm_currituck_detect_memsize();
+       if (ibm_currituck_memsize >> 32)
+               end_of_ram = ~0UL;
+       else
+               end_of_ram = ibm_currituck_memsize;
+       avail_ram = end_of_ram - (unsigned long)_end;
+
+       simple_alloc_init(_end, avail_ram, 128, 64);
+       platform_ops.fixups = ibm_currituck_fixups;
+       platform_ops.exit = ibm44x_dbcr_reset;
+       pir_reg = mfspr(SPRN_PIR);
+
+       /* Make sure FDT blob is sane */
+       if (fdt_check_header(_dtb_start) != 0)
+               fatal("Invalid device tree blob\n");
+
+       node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type",
+                                            "cpu", sizeof("cpu"));
+       if (!node)
+               fatal("Cannot find cpu node\n");
+       timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size);
+       if (timebase && (size == 4))
+               timebase_period_ns = 1000000000 / *timebase;
+
+       fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);
+       fdt_init(_dtb_start);
+
+       serial_console_init();
+}
index c74531a..87f4950 100755 (executable)
@@ -244,6 +244,9 @@ gamecube|wii)
     link_address='0x600000'
     platformo="$object/$platform-head.o $object/$platform.o"
     ;;
+treeboot-currituck)
+    link_address='0x1000000'
+    ;;
 treeboot-iss4xx-mpic)
     platformo="$object/treeboot-iss4xx.o"
     ;;
diff --git a/arch/powerpc/configs/44x/currituck_defconfig b/arch/powerpc/configs/44x/currituck_defconfig
new file mode 100644 (file)
index 0000000..4192322
--- /dev/null
@@ -0,0 +1,110 @@
+CONFIG_44x=y
+CONFIG_SMP=y
+CONFIG_EXPERIMENTAL=y
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_LOG_BUF_SHIFT=14
+CONFIG_EXPERT=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_PROFILING=y
+CONFIG_OPROFILE=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PPC_47x=y
+# CONFIG_EBONY is not set
+CONFIG_CURRITUCK=y
+CONFIG_HIGHMEM=y
+CONFIG_HZ_100=y
+CONFIG_MATH_EMULATION=y
+CONFIG_IRQ_ALL_CPUS=y
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE=""
+# CONFIG_SUSPEND is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+# CONFIG_IPV6 is not set
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_CONNECTOR=y
+CONFIG_MTD=y
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLOCK=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_CFI_AMDSTD=y
+CONFIG_MTD_PHYSMAP_OF=y
+CONFIG_PROC_DEVICETREE=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_SIZE=35000
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_BLK_DEV_SD=y
+# CONFIG_SCSI_LOWLEVEL is not set
+CONFIG_ATA=y
+# CONFIG_SATA_PMP is not set
+CONFIG_SATA_SIL24=y
+# CONFIG_ATA_SFF is not set
+CONFIG_NETDEVICES=y
+CONFIG_E1000E=y
+# CONFIG_NETDEV_10000 is not set
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_OF_PLATFORM=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_I2C=y
+CONFIG_I2C_IBM_IIC=y
+# CONFIG_HWMON is not set
+CONFIG_THERMAL=y
+CONFIG_USB=y
+CONFIG_USB_DEBUG=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_M41T80=y
+CONFIG_EXT2_FS=y
+CONFIG_EXT3_FS=y
+# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
+CONFIG_EXT3_FS_POSIX_ACL=y
+CONFIG_EXT3_FS_SECURITY=y
+CONFIG_PROC_KCORE=y
+CONFIG_TMPFS=y
+CONFIG_CRAMFS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_NLS_DEFAULT="n"
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_FS=y
+CONFIG_DEBUG_KERNEL=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEBUG_INFO=y
+CONFIG_SYSCTL_SYSCALL_CHECK=y
+CONFIG_XMON=y
+CONFIG_XMON_DEFAULT=y
+CONFIG_PPC_EARLY_DEBUG=y
+CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW=0x10000000
+CONFIG_PPC_EARLY_DEBUG_44x_PHYSHIGH=0x200
+CONFIG_CRYPTO=y
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_PCBC=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_HW is not set
index f0be6e0..5d5aaf6 100644 (file)
@@ -186,6 +186,16 @@ config ISS4xx
        help
          This option enables support for the IBM ISS simulation environment
 
+config CURRITUCK
+       bool "IBM Currituck (476fpe) Support"
+       depends on PPC_47x
+       default n
+       select SWIOTLB
+       select 476FPE
+       select PPC4xx_PCI_EXPRESS
+       help
+         This option enables support for the IBM Currituck (476fpe) evaluation board
+
 config ICON
        bool "Icon"
        depends on 44x
index 553db60..d03833a 100644 (file)
@@ -10,3 +10,4 @@ obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o
 obj-$(CONFIG_XILINX_ML510) += virtex_ml510.o
 obj-$(CONFIG_ISS4xx)   += iss4xx.o
 obj-$(CONFIG_CANYONLANDS)+= canyonlands.o
+obj-$(CONFIG_CURRITUCK)        += currituck.o
diff --git a/arch/powerpc/platforms/44x/currituck.c b/arch/powerpc/platforms/44x/currituck.c
new file mode 100644 (file)
index 0000000..1fdf569
--- /dev/null
@@ -0,0 +1,204 @@
+/*
+ * Currituck board specific routines
+ *
+ * Copyright © 2011 Tony Breeds IBM Corporation
+ *
+ * Based on earlier code:
+ *    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.
+ *    Copyright © 2011 David Kliekamp 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/memblock.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/rtc.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+#include <asm/mpic.h>
+#include <asm/mmu.h>
+
+#include <linux/pci.h>
+
+static __initdata struct of_device_id ppc47x_of_bus[] = {
+       { .compatible = "ibm,plb4", },
+       { .compatible = "ibm,plb6", },
+       { .compatible = "ibm,opb", },
+       { .compatible = "ibm,ebc", },
+       {},
+};
+
+/* The EEPROM is missing and the default values are bogus.  This forces USB in
+ * to EHCI mode */
+static void __devinit quirk_ppc_currituck_usb_fixup(struct pci_dev *dev)
+{
+       if (of_machine_is_compatible("ibm,currituck")) {
+               pci_write_config_dword(dev, 0xe0, 0x0114231f);
+               pci_write_config_dword(dev, 0xe4, 0x00006c40);
+       }
+}
+DECLARE_PCI_FIXUP_HEADER(0x1033, 0x0035, quirk_ppc_currituck_usb_fixup);
+
+static int __init ppc47x_device_probe(void)
+{
+       of_platform_bus_probe(NULL, ppc47x_of_bus, NULL);
+
+       return 0;
+}
+machine_device_initcall(ppc47x, ppc47x_device_probe);
+
+/* We can have either UICs or MPICs */
+static void __init ppc47x_init_irq(void)
+{
+       struct device_node *np;
+
+       /* Find top level interrupt controller */
+       for_each_node_with_property(np, "interrupt-controller") {
+               if (of_get_property(np, "interrupts", NULL) == NULL)
+                       break;
+       }
+       if (np == NULL)
+               panic("Can't find top level interrupt controller");
+
+       /* Check type and do appropriate initialization */
+       if (of_device_is_compatible(np, "chrp,open-pic")) {
+               /* The MPIC driver will get everything it needs from the
+                * device-tree, just pass 0 to all arguments
+                */
+               struct mpic *mpic =
+                       mpic_alloc(np, 0, MPIC_PRIMARY, 0, 0, " MPIC     ");
+               BUG_ON(mpic == NULL);
+               mpic_init(mpic);
+               ppc_md.get_irq = mpic_get_irq;
+       } else
+               panic("Unrecognized top level interrupt controller");
+}
+
+#ifdef CONFIG_SMP
+static void __cpuinit smp_ppc47x_setup_cpu(int cpu)
+{
+       mpic_setup_this_cpu();
+}
+
+static int __cpuinit smp_ppc47x_kick_cpu(int cpu)
+{
+       struct device_node *cpunode = of_get_cpu_node(cpu, NULL);
+       const u64 *spin_table_addr_prop;
+       u32 *spin_table;
+       extern void start_secondary_47x(void);
+
+       BUG_ON(cpunode == NULL);
+
+       /* Assume spin table. We could test for the enable-method in
+        * the device-tree but currently there's little point as it's
+        * our only supported method
+        */
+       spin_table_addr_prop =
+               of_get_property(cpunode, "cpu-release-addr", NULL);
+
+       if (spin_table_addr_prop == NULL) {
+               pr_err("CPU%d: Can't start, missing cpu-release-addr !\n",
+                      cpu);
+               return 1;
+       }
+
+       /* Assume it's mapped as part of the linear mapping. This is a bit
+        * fishy but will work fine for now
+        *
+        * XXX: Is there any reason to assume differently?
+        */
+       spin_table = (u32 *)__va(*spin_table_addr_prop);
+       pr_debug("CPU%d: Spin table mapped at %p\n", cpu, spin_table);
+
+       spin_table[3] = cpu;
+       smp_wmb();
+       spin_table[1] = __pa(start_secondary_47x);
+       mb();
+
+       return 0;
+}
+
+static struct smp_ops_t ppc47x_smp_ops = {
+       .probe          = smp_mpic_probe,
+       .message_pass   = smp_mpic_message_pass,
+       .setup_cpu      = smp_ppc47x_setup_cpu,
+       .kick_cpu       = smp_ppc47x_kick_cpu,
+       .give_timebase  = smp_generic_give_timebase,
+       .take_timebase  = smp_generic_take_timebase,
+};
+
+static void __init ppc47x_smp_init(void)
+{
+       if (mmu_has_feature(MMU_FTR_TYPE_47x))
+               smp_ops = &ppc47x_smp_ops;
+}
+
+#else /* CONFIG_SMP */
+static void __init ppc47x_smp_init(void) { }
+#endif /* CONFIG_SMP */
+
+static void __init ppc47x_setup_arch(void)
+{
+
+       /* No need to check the DMA config as we /know/ our windows are all of
+        * RAM.  Lets hope that doesn't change */
+#ifdef CONFIG_SWIOTLB
+       if (memblock_end_of_DRAM() > 0xffffffff) {
+               ppc_swiotlb_enable = 1;
+               set_pci_dma_ops(&swiotlb_dma_ops);
+               ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb;
+       }
+#endif
+       ppc47x_smp_init();
+}
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init ppc47x_probe(void)
+{
+       unsigned long root = of_get_flat_dt_root();
+
+       if (!of_flat_dt_is_compatible(root, "ibm,currituck"))
+               return 0;
+
+       return 1;
+}
+
+/* Use USB controller should have been hardware swizzled but it wasn't :( */
+static void ppc47x_pci_irq_fixup(struct pci_dev *dev)
+{
+       if (dev->vendor == 0x1033 && (dev->device == 0x0035 ||
+                                     dev->device == 0x00e0)) {
+               dev->irq = irq_create_mapping(NULL, 47);
+               pr_info("%s: Mapping irq 47 %d\n", __func__, dev->irq);
+       }
+}
+
+define_machine(ppc47x) {
+       .name                   = "PowerPC 47x",
+       .probe                  = ppc47x_probe,
+       .progress               = udbg_progress,
+       .init_IRQ               = ppc47x_init_irq,
+       .setup_arch             = ppc47x_setup_arch,
+       .pci_irq_fixup          = ppc47x_pci_irq_fixup,
+       .restart                = ppc4xx_reset_system,
+       .calibrate_decr         = generic_calibrate_decr,
+};