1 files changed, 349 insertions, 0 deletions

diff --git a/arch/ppc/platforms/mvme5100.c b/arch/ppc/platforms/mvme5100.c
new file mode 100644
index 000000000000..b292b44b760c
--- /dev/null
+++ b/arch/ppc/platforms/mvme5100.c
@@ -0,0 +1,349 @@
+/*
+ * arch/ppc/platforms/mvme5100.c
+ *
+ * Board setup routines for the Motorola MVME5100.
+ *
+ * Author: Matt Porter <mporter@mvista.com>
+ *
+ * 2001-2004 (c) MontaVista, Software, Inc.  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.
+ */
+
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/initrd.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/ide.h>
+#include <linux/seq_file.h>
+#include <linux/kdev_t.h>
+#include <linux/root_dev.h>
+
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/open_pic.h>
+#include <asm/i8259.h>
+#include <asm/todc.h>
+#include <asm/pci-bridge.h>
+#include <asm/bootinfo.h>
+#include <asm/hawk.h>
+
+#include <platforms/pplus.h>
+#include <platforms/mvme5100.h>
+
+static u_char mvme5100_openpic_initsenses[16] __initdata = {
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* i8259 cascade */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* TL16C550 UART 1,2 */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Enet1 front panel or P2 */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Hawk Watchdog 1,2 */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* DS1621 thermal alarm */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Universe II LINT0# */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Universe II LINT1# */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Universe II LINT2# */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Universe II LINT3# */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PMC1 INTA#, PMC2 INTB# */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PMC1 INTB#, PMC2 INTC# */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PMC1 INTC#, PMC2 INTD# */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PMC1 INTD#, PMC2 INTA# */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Enet 2 (front panel) */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Abort Switch */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* RTC Alarm */
+};
+
+static inline int
+mvme5100_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+        int irq;
+
+        static char pci_irq_table[][4] =
+        /*
+         *      PCI IDSEL/INTPIN->INTLINE
+         *         A   B   C   D
+         */
+        {
+                {  0,  0,  0,  0 },     /* IDSEL 11 - Winbond */
+                {  0,  0,  0,  0 },     /* IDSEL 12 - unused */
+                { 21, 22, 23, 24 },     /* IDSEL 13 - Universe II */
+                { 18,  0,  0,  0 },     /* IDSEL 14 - Enet 1 */
+                {  0,  0,  0,  0 },     /* IDSEL 15 - unused */
+                { 25, 26, 27, 28 },     /* IDSEL 16 - PMC Slot 1 */
+                { 28, 25, 26, 27 },     /* IDSEL 17 - PMC Slot 2 */
+                {  0,  0,  0,  0 },     /* IDSEL 18 - unused */
+                { 29,  0,  0,  0 },     /* IDSEL 19 - Enet 2 */
+                {  0,  0,  0,  0 },     /* IDSEL 20 - PMCSPAN */
+        };
+
+        const long min_idsel = 11, max_idsel = 20, irqs_per_slot = 4;
+        irq = PCI_IRQ_TABLE_LOOKUP;
+        /* If lookup is zero, always return 0 */
+        if (!irq)
+                return 0;
+        else
+#ifdef CONFIG_MVME5100_IPMC761_PRESENT
+        /* If IPMC761 present, return table value */
+        return irq;
+#else
+        /* If IPMC761 not present, we don't have an i8259 so adjust */
+        return (irq - NUM_8259_INTERRUPTS);
+#endif
+}
+
+static void
+mvme5100_pcibios_fixup_resources(struct pci_dev *dev)
+{
+        int i;
+
+        if ((dev->vendor == PCI_VENDOR_ID_MOTOROLA) &&
+                        (dev->device == PCI_DEVICE_ID_MOTOROLA_HAWK))
+                for (i=0; i<DEVICE_COUNT_RESOURCE; i++)
+                {
+                        dev->resource[i].start = 0;
+                        dev->resource[i].end = 0;
+                }
+}
+
+static void __init
+mvme5100_setup_bridge(void)
+{
+        struct pci_controller*  hose;
+
+        hose = pcibios_alloc_controller();
+
+        if (!hose)
+                return;
+
+        hose->first_busno = 0;
+        hose->last_busno = 0xff;
+        hose->pci_mem_offset = MVME5100_PCI_MEM_OFFSET;
+
+        pci_init_resource(&hose->io_resource, MVME5100_PCI_LOWER_IO,
+                        MVME5100_PCI_UPPER_IO, IORESOURCE_IO,
+                        "PCI host bridge");
+
+        pci_init_resource(&hose->mem_resources[0], MVME5100_PCI_LOWER_MEM,
+                        MVME5100_PCI_UPPER_MEM, IORESOURCE_MEM,
+                        "PCI host bridge");
+
+        hose->io_space.start = MVME5100_PCI_LOWER_IO;
+        hose->io_space.end = MVME5100_PCI_UPPER_IO;
+        hose->mem_space.start = MVME5100_PCI_LOWER_MEM;
+        hose->mem_space.end = MVME5100_PCI_UPPER_MEM;
+        hose->io_base_virt = (void *)MVME5100_ISA_IO_BASE;
+
+        /* Use indirect method of Hawk */
+        setup_indirect_pci(hose, MVME5100_PCI_CONFIG_ADDR,
+                        MVME5100_PCI_CONFIG_DATA);
+
+        hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
+
+        ppc_md.pcibios_fixup_resources = mvme5100_pcibios_fixup_resources;
+        ppc_md.pci_swizzle = common_swizzle;
+        ppc_md.pci_map_irq = mvme5100_map_irq;
+}
+
+static void __init
+mvme5100_setup_arch(void)
+{
+        if ( ppc_md.progress )
+                ppc_md.progress("mvme5100_setup_arch: enter", 0);
+
+        loops_per_jiffy = 50000000 / HZ;
+
+#ifdef CONFIG_BLK_DEV_INITRD
+        if (initrd_start)
+                ROOT_DEV = Root_RAM0;
+        else
+#endif
+#ifdef  CONFIG_ROOT_NFS
+                ROOT_DEV = Root_NFS;
+#else
+                ROOT_DEV = Root_SDA2;
+#endif
+
+        if ( ppc_md.progress )
+                ppc_md.progress("mvme5100_setup_arch: find_bridges", 0);
+
+        /* Setup PCI host bridge */
+        mvme5100_setup_bridge();
+
+        /* Find and map our OpenPIC */
+        hawk_mpic_init(MVME5100_PCI_MEM_OFFSET);
+        OpenPIC_InitSenses = mvme5100_openpic_initsenses;
+        OpenPIC_NumInitSenses = sizeof(mvme5100_openpic_initsenses);
+
+        printk("MVME5100 port (C) 2001 MontaVista Software, Inc. (source@mvista.com)\n");
+
+        if ( ppc_md.progress )
+                ppc_md.progress("mvme5100_setup_arch: exit", 0);
+
+        return;
+}
+
+static void __init
+mvme5100_init2(void)
+{
+#ifdef CONFIG_MVME5100_IPMC761_PRESENT
+                request_region(0x00,0x20,"dma1");
+                request_region(0x20,0x20,"pic1");
+                request_region(0x40,0x20,"timer");
+                request_region(0x80,0x10,"dma page reg");
+                request_region(0xa0,0x20,"pic2");
+                request_region(0xc0,0x20,"dma2");
+#endif
+        return;
+}
+
+/*
+ * Interrupt setup and service.
+ * Have MPIC on HAWK and cascaded 8259s on Winbond cascaded to MPIC.
+ */
+static void __init
+mvme5100_init_IRQ(void)
+{
+#ifdef CONFIG_MVME5100_IPMC761_PRESENT
+        int i;
+#endif
+
+        if ( ppc_md.progress )
+                ppc_md.progress("init_irq: enter", 0);
+
+        openpic_set_sources(0, 16, OpenPIC_Addr + 0x10000);
+#ifdef CONFIG_MVME5100_IPMC761_PRESENT
+        openpic_init(NUM_8259_INTERRUPTS);
+        openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
+                        &i8259_irq);
+
+        /* Map i8259 interrupts. */
+        for (i = 0; i < NUM_8259_INTERRUPTS; i++)
+                irq_desc[i].handler = &i8259_pic;
+
+        i8259_init(0);
+#else
+        openpic_init(0);
+#endif
+
+        if ( ppc_md.progress )
+                ppc_md.progress("init_irq: exit", 0);
+
+        return;
+}
+
+/*
+ * Set BAT 3 to map 0xf0000000 to end of physical memory space.
+ */
+static __inline__ void
+mvme5100_set_bat(void)
+{
+        mb();
+        mtspr(SPRN_DBAT1U, 0xf0001ffe);
+        mtspr(SPRN_DBAT1L, 0xf000002a);
+        mb();
+}
+
+static unsigned long __init
+mvme5100_find_end_of_memory(void)
+{
+        return hawk_get_mem_size(MVME5100_HAWK_SMC_BASE);
+}
+
+static void __init
+mvme5100_map_io(void)
+{
+        io_block_mapping(0xfe000000, 0xfe000000, 0x02000000, _PAGE_IO);
+        ioremap_base = 0xfe000000;
+}
+
+static void
+mvme5100_reset_board(void)
+{
+        local_irq_disable();
+
+        /* Set exception prefix high - to the firmware */
+        _nmask_and_or_msr(0, MSR_IP);
+
+        out_8((u_char *)MVME5100_BOARD_MODRST_REG, 0x01);
+
+        return;
+}
+
+static void
+mvme5100_restart(char *cmd)
+{
+        volatile ulong i = 10000000;
+
+        mvme5100_reset_board();
+
+        while (i-- > 0);
+        panic("restart failed\n");
+}
+
+static void
+mvme5100_halt(void)
+{
+        local_irq_disable();
+        while (1);
+}
+
+static void
+mvme5100_power_off(void)
+{
+        mvme5100_halt();
+}
+
+static int
+mvme5100_show_cpuinfo(struct seq_file *m)
+{
+        seq_printf(m, "vendor\t\t: Motorola\n");
+        seq_printf(m, "machine\t\t: MVME5100\n");
+
+        return 0;
+}
+
+TODC_ALLOC();
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+              unsigned long r6, unsigned long r7)
+{
+        parse_bootinfo(find_bootinfo());
+        mvme5100_set_bat();
+
+        isa_io_base = MVME5100_ISA_IO_BASE;
+        isa_mem_base = MVME5100_ISA_MEM_BASE;
+        pci_dram_offset = MVME5100_PCI_DRAM_OFFSET;
+
+        ppc_md.setup_arch = mvme5100_setup_arch;
+        ppc_md.show_cpuinfo = mvme5100_show_cpuinfo;
+        ppc_md.init_IRQ = mvme5100_init_IRQ;
+        ppc_md.get_irq = openpic_get_irq;
+        ppc_md.init = mvme5100_init2;
+
+        ppc_md.restart = mvme5100_restart;
+        ppc_md.power_off = mvme5100_power_off;
+        ppc_md.halt = mvme5100_halt;
+
+        ppc_md.find_end_of_memory = mvme5100_find_end_of_memory;
+        ppc_md.setup_io_mappings = mvme5100_map_io;
+
+        TODC_INIT(TODC_TYPE_MK48T37, MVME5100_NVRAM_AS0, MVME5100_NVRAM_AS1,
+                        MVME5100_NVRAM_DATA, 8);
+
+        ppc_md.time_init = todc_time_init;
+        ppc_md.set_rtc_time = todc_set_rtc_time;
+        ppc_md.get_rtc_time = todc_get_rtc_time;
+        ppc_md.calibrate_decr = todc_calibrate_decr;
+
+        ppc_md.nvram_read_val = todc_m48txx_read_val;
+        ppc_md.nvram_write_val = todc_m48txx_write_val;
+}