[POWERPC] Add initial MPC8610 HPCD Platform files.

Add basic board support for the MPC8610 HPCD.  This does
not include any support the SoC Display or Audio controllers.

Signed-off-by: Xianghua Xiao <x.xiao@freescale.com>
Signed-off-by: Jason Jin <Jason.jin@freescale.com>
Signed-off-by: Jon Loelier <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

3 files changed, 247 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig
index 685b2fbbbe00..21d113536b86 100644
--- a/arch/powerpc/platforms/86xx/Kconfig
+++ b/arch/powerpc/platforms/86xx/Kconfig
@@ -11,6 +11,12 @@ config MPC8641_HPCN
         help
           This option enables support for the MPC8641 HPCN board.
 
+config MPC8610_HPCD
+        bool "Freescale MPC8610 HPCD"
+        select DEFAULT_UIMAGE
+        help
+          This option enables support for the MPC8610 HPCD board.
+
 endchoice
 
 config MPC8641
@@ -19,3 +25,10 @@ config MPC8641
         select PPC_UDBG_16550
         select MPIC
         default y if MPC8641_HPCN
+
+config MPC8610
+        bool
+        select FSL_PCI if PCI
+        select PPC_UDBG_16550
+        select MPIC
+        default y if MPC8610_HPCD
diff --git a/arch/powerpc/platforms/86xx/Makefile b/arch/powerpc/platforms/86xx/Makefile
index 3376c7767f2d..c96706327eaa 100644
--- a/arch/powerpc/platforms/86xx/Makefile
+++ b/arch/powerpc/platforms/86xx/Makefile
@@ -4,3 +4,4 @@
 
 obj-$(CONFIG_SMP)               += mpc86xx_smp.o
 obj-$(CONFIG_MPC8641_HPCN)      += mpc86xx_hpcn.o
+obj-$(CONFIG_MPC8610_HPCD)      += mpc8610_hpcd.o
diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
new file mode 100644
index 000000000000..c794d88fa55f
--- /dev/null
+++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
@@ -0,0 +1,233 @@
+/*
+ * MPC8610 HPCD board specific routines
+ *
+ * Initial author: Xianghua Xiao <x.xiao@freescale.com>
+ * Recode: Jason Jin <jason.jin@freescale.com>
+ *
+ * Rewrite the interrupt routing. remove the 8259PIC support,
+ * All the integrated device in ULI use sideband interrupt.
+ *
+ * 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/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/of.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpc86xx.h>
+#include <asm/prom.h>
+#include <mm/mmu_decl.h>
+#include <asm/udbg.h>
+
+#include <asm/mpic.h>
+
+#include <sysdev/fsl_pci.h>
+#include <sysdev/fsl_soc.h>
+
+#define MPC86XX_RSTCR_OFFSET    (0xe00b0)       /* Reset Control Register */
+
+void __init
+mpc86xx_hpcd_init_irq(void)
+{
+        struct mpic *mpic1;
+        struct device_node *np;
+        struct resource res;
+
+        /* Determine PIC address. */
+        np = of_find_node_by_type(NULL, "open-pic");
+        if (np == NULL)
+                return;
+        of_address_to_resource(np, 0, &res);
+
+        /* Alloc mpic structure and per isu has 16 INT entries. */
+        mpic1 = mpic_alloc(np, res.start,
+                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
+                        0, 256, " MPIC     ");
+        BUG_ON(mpic1 == NULL);
+
+        mpic_init(mpic1);
+}
+
+#ifdef CONFIG_PCI
+static void __devinit quirk_uli1575(struct pci_dev *dev)
+{
+        u32 temp32;
+
+        /* Disable INTx */
+        pci_read_config_dword(dev, 0x48, &temp32);
+        pci_write_config_dword(dev, 0x48, (temp32 | 1<<26));
+
+        /* Enable sideband interrupt */
+        pci_read_config_dword(dev, 0x90, &temp32);
+        pci_write_config_dword(dev, 0x90, (temp32 | 1<<22));
+}
+
+static void __devinit quirk_uli5288(struct pci_dev *dev)
+{
+        unsigned char c;
+        unsigned short temp;
+
+        /* Interrupt Disable, Needed when SATA disabled */
+        pci_read_config_word(dev, PCI_COMMAND, &temp);
+        temp |= 1<<10;
+        pci_write_config_word(dev, PCI_COMMAND, temp);
+
+        pci_read_config_byte(dev, 0x83, &c);
+        c |= 0x80;
+        pci_write_config_byte(dev, 0x83, c);
+
+        pci_write_config_byte(dev, PCI_CLASS_PROG, 0x01);
+        pci_write_config_byte(dev, PCI_CLASS_DEVICE, 0x06);
+
+        pci_read_config_byte(dev, 0x83, &c);
+        c &= 0x7f;
+        pci_write_config_byte(dev, 0x83, c);
+}
+
+/*
+ * Since 8259PIC was disabled on the board, the IDE device can not
+ * use the legacy IRQ, we need to let the IDE device work under
+ * native mode and use the interrupt line like other PCI devices.
+ * IRQ14 is a sideband interrupt from IDE device to CPU and we use this
+ * as the interrupt for IDE device.
+ */
+static void __devinit quirk_uli5229(struct pci_dev *dev)
+{
+        unsigned char c;
+
+        pci_read_config_byte(dev, 0x4b, &c);
+        c |= 0x10;
+        pci_write_config_byte(dev, 0x4b, c);
+}
+
+/*
+ * SATA interrupt pin bug fix
+ * There's a chip bug for 5288, The interrupt pin should be 2,
+ * not the read only value 1, So it use INTB#, not INTA# which
+ * actually used by the IDE device 5229.
+ * As of this bug, during the PCI initialization, 5288 read the
+ * irq of IDE device from the device tree, this function fix this
+ * bug by re-assigning a correct irq to 5288.
+ *
+ */
+static void __devinit final_uli5288(struct pci_dev *dev)
+{
+        struct pci_controller *hose = pci_bus_to_host(dev->bus);
+        struct device_node *hosenode = hose ? hose->arch_data : NULL;
+        struct of_irq oirq;
+        int virq, pin = 2;
+        u32 laddr[3];
+
+        if (!hosenode)
+                return;
+
+        laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(31, 0) << 8);
+        laddr[1] = laddr[2] = 0;
+        of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
+        virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
+                                     oirq.size);
+        dev->irq = virq;
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x5288, final_uli5288);
+#endif /* CONFIG_PCI */
+
+static void __init
+mpc86xx_hpcd_setup_arch(void)
+{
+#ifdef CONFIG_PCI
+        struct device_node *np;
+#endif
+        if (ppc_md.progress)
+                ppc_md.progress("mpc86xx_hpcd_setup_arch()", 0);
+
+#ifdef CONFIG_PCI
+        for_each_node_by_type(np, "pci") {
+                if (of_device_is_compatible(np, "fsl,mpc8610-pci")
+                    || of_device_is_compatible(np, "fsl,mpc8641-pcie")) {
+                        struct resource rsrc;
+                        of_address_to_resource(np, 0, &rsrc);
+                        if ((rsrc.start & 0xfffff) == 0xa000)
+                                fsl_add_bridge(np, 1);
+                        else
+                                fsl_add_bridge(np, 0);
+                }
+        }
+#endif
+
+        printk("MPC86xx HPCD board from Freescale Semiconductor\n");
+}
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init mpc86xx_hpcd_probe(void)
+{
+        unsigned long root = of_get_flat_dt_root();
+
+        if (of_flat_dt_is_compatible(root, "fsl,MPC8610HPCD"))
+                return 1;       /* Looks good */
+
+        return 0;
+}
+
+void
+mpc86xx_restart(char *cmd)
+{
+        void __iomem *rstcr;
+
+        rstcr = ioremap(get_immrbase() + MPC86XX_RSTCR_OFFSET, 0x100);
+
+        local_irq_disable();
+
+        /* Assert reset request to Reset Control Register */
+        out_be32(rstcr, 0x2);
+
+        /* not reached */
+}
+
+long __init
+mpc86xx_time_init(void)
+{
+        unsigned int temp;
+
+        /* Set the time base to zero */
+        mtspr(SPRN_TBWL, 0);
+        mtspr(SPRN_TBWU, 0);
+
+        temp = mfspr(SPRN_HID0);
+        temp |= HID0_TBEN;
+        mtspr(SPRN_HID0, temp);
+        asm volatile("isync");
+
+        return 0;
+}
+
+define_machine(mpc86xx_hpcd) {
+        .name                   = "MPC86xx HPCD",
+        .probe                  = mpc86xx_hpcd_probe,
+        .setup_arch             = mpc86xx_hpcd_setup_arch,
+        .init_IRQ               = mpc86xx_hpcd_init_irq,
+        .get_irq                = mpic_get_irq,
+        .restart                = mpc86xx_restart,
+        .time_init              = mpc86xx_time_init,
+        .calibrate_decr         = generic_calibrate_decr,
+        .progress               = udbg_progress,
+        .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
+};