[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>

1 files changed, 233 insertions, 0 deletions

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,
+};