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-rw-r--r--arch/ppc/platforms/pplus.c917
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diff --git a/arch/ppc/platforms/pplus.c b/arch/ppc/platforms/pplus.c
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+++ b/arch/ppc/platforms/pplus.c
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+/*
+ * arch/ppc/platforms/pplus.c
+ *
+ * Board and PCI setup routines for MCG PowerPlus
+ *
+ * Author: Randy Vinson <rvinson@mvista.com>
+ *
+ * Derived from original PowerPlus PReP work by
+ * Cort Dougan, Johnnie Peters, Matt Porter, and
+ * Troy Benjegerdes.
+ *
+ * 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/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/console.h>
+#include <linux/pci.h>
+#include <linux/irq.h>
+#include <linux/ide.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/dma.h>
+#include <asm/machdep.h>
+#include <asm/prep_nvram.h>
+#include <asm/vga.h>
+#include <asm/i8259.h>
+#include <asm/open_pic.h>
+#include <asm/hawk.h>
+#include <asm/todc.h>
+#include <asm/bootinfo.h>
+#include <asm/kgdb.h>
+#include <asm/reg.h>
+
+#include "pplus.h"
+
+#undef DUMP_DBATS
+
+TODC_ALLOC();
+
+extern void pplus_setup_hose(void);
+extern void pplus_set_VIA_IDE_native(void);
+
+extern unsigned long loops_per_jiffy;
+unsigned char *Motherboard_map_name;
+
+/* Tables for known hardware */
+
+/* Motorola Mesquite */
+static inline int
+mesquite_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ static char pci_irq_table[][4] =
+ /*
+ * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
+ * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ {18, 0, 0, 0}, /* IDSEL 14 - Enet 0 */
+ { 0, 0, 0, 0}, /* IDSEL 15 - unused */
+ {19, 19, 19, 19}, /* IDSEL 16 - PMC Slot 1 */
+ { 0, 0, 0, 0}, /* IDSEL 17 - unused */
+ { 0, 0, 0, 0}, /* IDSEL 18 - unused */
+ { 0, 0, 0, 0}, /* IDSEL 19 - unused */
+ {24, 25, 26, 27}, /* IDSEL 20 - P2P bridge (to cPCI 1) */
+ { 0, 0, 0, 0}, /* IDSEL 21 - unused */
+ {28, 29, 30, 31} /* IDSEL 22 - P2P bridge (to cPCI 2) */
+ };
+
+ const long min_idsel = 14, max_idsel = 22, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+
+/* Motorola Sitka */
+static inline int
+sitka_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ static char pci_irq_table[][4] =
+ /*
+ * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
+ * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ {18, 0, 0, 0}, /* IDSEL 14 - Enet 0 */
+ { 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 */
+ { 0, 0, 0, 0}, /* IDSEL 19 - unused */
+ {20, 0, 0, 0} /* IDSEL 20 - P2P bridge (to cPCI) */
+ };
+
+ const long min_idsel = 14, max_idsel = 20, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+
+/* Motorola MTX */
+static inline int
+MTX_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ static char pci_irq_table[][4] =
+ /*
+ * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
+ * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ {19, 0, 0, 0}, /* IDSEL 12 - SCSI */
+ { 0, 0, 0, 0}, /* IDSEL 13 - unused */
+ {18, 0, 0, 0}, /* IDSEL 14 - Enet */
+ { 0, 0, 0, 0}, /* IDSEL 15 - unused */
+ {25, 26, 27, 28}, /* IDSEL 16 - PMC Slot 1 */
+ {26, 27, 28, 25}, /* IDSEL 17 - PMC Slot 2 */
+ {27, 28, 25, 26} /* IDSEL 18 - PCI Slot 3 */
+ };
+
+ const long min_idsel = 12, max_idsel = 18, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+
+/* Motorola MTX Plus */
+/* Secondary bus interrupt routing is not supported yet */
+static inline int
+MTXplus_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ static char pci_irq_table[][4] =
+ /*
+ * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
+ * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ {19, 0, 0, 0}, /* IDSEL 12 - SCSI */
+ { 0, 0, 0, 0}, /* IDSEL 13 - unused */
+ {18, 0, 0, 0}, /* IDSEL 14 - Enet 1 */
+ { 0, 0, 0, 0}, /* IDSEL 15 - unused */
+ {25, 26, 27, 28}, /* IDSEL 16 - PCI Slot 1P */
+ {26, 27, 28, 25}, /* IDSEL 17 - PCI Slot 2P */
+ {27, 28, 25, 26}, /* IDSEL 18 - PCI Slot 3P */
+ {26, 0, 0, 0}, /* IDSEL 19 - Enet 2 */
+ { 0, 0, 0, 0} /* IDSEL 20 - P2P Bridge */
+ };
+
+ const long min_idsel = 12, max_idsel = 20, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+
+static inline int
+Genesis2_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ /* 2600
+ * Raven 31
+ * ISA 11
+ * SCSI 12 - IRQ3
+ * Univ 13
+ * eth 14 - IRQ2
+ * VGA 15 - IRQ4
+ * PMC1 16 - IRQ9,10,11,12 = PMC1 A-D
+ * PMC2 17 - IRQ12,9,10,11 = A-D
+ * SCSI2 18 - IRQ11
+ * eth2 19 - IRQ10
+ * PCIX 20 - IRQ9,10,11,12 = PCI A-D
+ */
+
+ /* 2400
+ * Hawk 31
+ * ISA 11
+ * Univ 13
+ * eth 14 - IRQ2
+ * PMC1 16 - IRQ9,10,11,12 = PMC A-D
+ * PMC2 17 - IRQ12,9,10,11 = PMC A-D
+ * PCIX 20 - IRQ9,10,11,12 = PMC A-D
+ */
+
+ /* 2300
+ * Raven 31
+ * ISA 11
+ * Univ 13
+ * eth 14 - IRQ2
+ * PMC1 16 - 9,10,11,12 = A-D
+ * PMC2 17 - 9,10,11,12 = B,C,D,A
+ */
+
+ static char pci_irq_table[][4] =
+ /*
+ * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
+ * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ {19, 0, 0, 0}, /* IDSEL 12 - SCSI */
+ { 0, 0, 0, 0}, /* IDSEL 13 - Universe PCI - VME */
+ {18, 0, 0, 0}, /* IDSEL 14 - Enet 1 */
+ { 0, 0, 0, 0}, /* IDSEL 15 - unused */
+ {25, 26, 27, 28}, /* IDSEL 16 - PCI/PMC Slot 1P */
+ {28, 25, 26, 27}, /* IDSEL 17 - PCI/PMC Slot 2P */
+ {27, 28, 25, 26}, /* IDSEL 18 - PCI Slot 3P */
+ {26, 0, 0, 0}, /* IDSEL 19 - Enet 2 */
+ {25, 26, 27, 28} /* IDSEL 20 - P2P Bridge */
+ };
+
+ const long min_idsel = 12, max_idsel = 20, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+
+#define MOTOROLA_CPUTYPE_REG 0x800
+#define MOTOROLA_BASETYPE_REG 0x803
+#define MPIC_RAVEN_ID 0x48010000
+#define MPIC_HAWK_ID 0x48030000
+#define MOT_PROC2_BIT 0x800
+
+static u_char pplus_openpic_initsenses[] __initdata = {
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* MVME2600_INT_SIO */
+ (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE),/*MVME2600_INT_FALCN_ECC_ERR */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),/*MVME2600_INT_PCI_ETHERNET */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_SCSI */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),/*MVME2600_INT_PCI_GRAPHICS */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME0 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME1 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME2 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME3 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTA */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTB */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTC */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTD */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_LM_SIG0 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_LM_SIG1 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),
+};
+
+int mot_entry = -1;
+int prep_keybd_present = 1;
+int mot_multi = 0;
+
+struct brd_info {
+ /* 0x100 mask assumes for Raven and Hawk boards that the level/edge
+ * are set */
+ int cpu_type;
+ /* 0x200 if this board has a Hawk chip. */
+ int base_type;
+ /* or'ed with 0x80 if this board should be checked for multi CPU */
+ int max_cpu;
+ const char *name;
+ int (*map_irq) (struct pci_dev *, unsigned char, unsigned char);
+};
+struct brd_info mot_info[] = {
+ {0x300, 0x00, 0x00, "MVME 2400", Genesis2_map_irq},
+ {0x1E0, 0xE0, 0x00, "Mesquite cPCI (MCP750)", mesquite_map_irq},
+ {0x1E0, 0xE1, 0x00, "Sitka cPCI (MCPN750)", sitka_map_irq},
+ {0x1E0, 0xE2, 0x00, "Mesquite cPCI (MCP750) w/ HAC", mesquite_map_irq},
+ {0x1E0, 0xF6, 0x80, "MTX Plus", MTXplus_map_irq},
+ {0x1E0, 0xF6, 0x81, "Dual MTX Plus", MTXplus_map_irq},
+ {0x1E0, 0xF7, 0x80, "MTX wo/ Parallel Port", MTX_map_irq},
+ {0x1E0, 0xF7, 0x81, "Dual MTX wo/ Parallel Port", MTX_map_irq},
+ {0x1E0, 0xF8, 0x80, "MTX w/ Parallel Port", MTX_map_irq},
+ {0x1E0, 0xF8, 0x81, "Dual MTX w/ Parallel Port", MTX_map_irq},
+ {0x1E0, 0xF9, 0x00, "MVME 2300", Genesis2_map_irq},
+ {0x1E0, 0xFA, 0x00, "MVME 2300SC/2600", Genesis2_map_irq},
+ {0x1E0, 0xFB, 0x00, "MVME 2600 with MVME712M", Genesis2_map_irq},
+ {0x1E0, 0xFC, 0x00, "MVME 2600/2700 with MVME761", Genesis2_map_irq},
+ {0x1E0, 0xFD, 0x80, "MVME 3600 with MVME712M", Genesis2_map_irq},
+ {0x1E0, 0xFD, 0x81, "MVME 4600 with MVME712M", Genesis2_map_irq},
+ {0x1E0, 0xFE, 0x80, "MVME 3600 with MVME761", Genesis2_map_irq},
+ {0x1E0, 0xFE, 0x81, "MVME 4600 with MVME761", Genesis2_map_irq},
+ {0x000, 0x00, 0x00, "", NULL}
+};
+
+void __init pplus_set_board_type(void)
+{
+ unsigned char cpu_type;
+ unsigned char base_mod;
+ int entry;
+ unsigned short devid;
+ unsigned long *ProcInfo = NULL;
+
+ cpu_type = inb(MOTOROLA_CPUTYPE_REG) & 0xF0;
+ base_mod = inb(MOTOROLA_BASETYPE_REG);
+ early_read_config_word(0, 0, 0, PCI_VENDOR_ID, &devid);
+
+ for (entry = 0; mot_info[entry].cpu_type != 0; entry++) {
+ /* Check for Hawk chip */
+ if (mot_info[entry].cpu_type & 0x200) {
+ if (devid != PCI_DEVICE_ID_MOTOROLA_HAWK)
+ continue;
+ } else {
+ /* store the system config register for later use. */
+ ProcInfo =
+ (unsigned long *)ioremap(PPLUS_SYS_CONFIG_REG, 4);
+
+ /* Check non hawk boards */
+ if ((mot_info[entry].cpu_type & 0xff) != cpu_type)
+ continue;
+
+ if (mot_info[entry].base_type == 0) {
+ mot_entry = entry;
+ break;
+ }
+
+ if (mot_info[entry].base_type != base_mod)
+ continue;
+ }
+
+ if (!(mot_info[entry].max_cpu & 0x80)) {
+ mot_entry = entry;
+ break;
+ }
+
+ /* processor 1 not present and max processor zero indicated */
+ if ((*ProcInfo & MOT_PROC2_BIT)
+ && !(mot_info[entry].max_cpu & 0x7f)) {
+ mot_entry = entry;
+ break;
+ }
+
+ /* processor 1 present and max processor zero indicated */
+ if (!(*ProcInfo & MOT_PROC2_BIT)
+ && (mot_info[entry].max_cpu & 0x7f)) {
+ mot_entry = entry;
+ break;
+ }
+
+ /* Indicate to system if this is a multiprocessor board */
+ if (!(*ProcInfo & MOT_PROC2_BIT))
+ mot_multi = 1;
+ }
+
+ if (mot_entry == -1)
+ /* No particular cpu type found - assume Mesquite (MCP750) */
+ mot_entry = 1;
+
+ Motherboard_map_name = (unsigned char *)mot_info[mot_entry].name;
+ ppc_md.pci_map_irq = mot_info[mot_entry].map_irq;
+}
+void __init pplus_pib_init(void)
+{
+ unsigned char reg;
+ unsigned short short_reg;
+
+ struct pci_dev *dev = NULL;
+
+ /*
+ * Perform specific configuration for the Via Tech or
+ * or Winbond PCI-ISA-Bridge part.
+ */
+ if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
+ PCI_DEVICE_ID_VIA_82C586_1, dev))) {
+ /*
+ * PPCBUG does not set the enable bits
+ * for the IDE device. Force them on here.
+ */
+ pci_read_config_byte(dev, 0x40, &reg);
+
+ reg |= 0x03; /* IDE: Chip Enable Bits */
+ pci_write_config_byte(dev, 0x40, reg);
+ }
+
+ if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
+ PCI_DEVICE_ID_VIA_82C586_2,
+ dev)) && (dev->devfn = 0x5a)) {
+ /* Force correct USB interrupt */
+ dev->irq = 11;
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+ }
+
+ if ((dev = pci_get_device(PCI_VENDOR_ID_WINBOND,
+ PCI_DEVICE_ID_WINBOND_83C553, dev))) {
+ /* Clear PCI Interrupt Routing Control Register. */
+ short_reg = 0x0000;
+ pci_write_config_word(dev, 0x44, short_reg);
+ /* Route IDE interrupts to IRQ 14 */
+ reg = 0xEE;
+ pci_write_config_byte(dev, 0x43, reg);
+ }
+
+ if ((dev = pci_get_device(PCI_VENDOR_ID_WINBOND,
+ PCI_DEVICE_ID_WINBOND_82C105, dev))) {
+ /*
+ * Disable LEGIRQ mode so PCI INTS are routed
+ * directly to the 8259 and enable both channels
+ */
+ pci_write_config_dword(dev, 0x40, 0x10ff0033);
+
+ /* Force correct IDE interrupt */
+ dev->irq = 14;
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+ }
+ pci_dev_put(dev);
+}
+
+void __init pplus_set_VIA_IDE_legacy(void)
+{
+ unsigned short vend, dev;
+
+ early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_VENDOR_ID, &vend);
+ early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_DEVICE_ID, &dev);
+
+ if ((vend == PCI_VENDOR_ID_VIA) &&
+ (dev == PCI_DEVICE_ID_VIA_82C586_1)) {
+ unsigned char temp;
+
+ /* put back original "standard" port base addresses */
+ early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
+ PCI_BASE_ADDRESS_0, 0x1f1);
+ early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
+ PCI_BASE_ADDRESS_1, 0x3f5);
+ early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
+ PCI_BASE_ADDRESS_2, 0x171);
+ early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
+ PCI_BASE_ADDRESS_3, 0x375);
+ early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
+ PCI_BASE_ADDRESS_4, 0xcc01);
+
+ /* put into legacy mode */
+ early_read_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
+ &temp);
+ temp &= ~0x05;
+ early_write_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
+ temp);
+ }
+}
+
+void pplus_set_VIA_IDE_native(void)
+{
+ unsigned short vend, dev;
+
+ early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_VENDOR_ID, &vend);
+ early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_DEVICE_ID, &dev);
+
+ if ((vend == PCI_VENDOR_ID_VIA) &&
+ (dev == PCI_DEVICE_ID_VIA_82C586_1)) {
+ unsigned char temp;
+
+ /* put into native mode */
+ early_read_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
+ &temp);
+ temp |= 0x05;
+ early_write_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
+ temp);
+ }
+}
+
+void __init pplus_pcibios_fixup(void)
+{
+
+ unsigned char reg;
+ unsigned short devid;
+ unsigned char base_mod;
+
+ printk(KERN_INFO "Setting PCI interrupts for a \"%s\"\n",
+ Motherboard_map_name);
+
+ /* Setup the Winbond or Via PIB */
+ pplus_pib_init();
+
+ /* Set up floppy in PS/2 mode */
+ outb(0x09, SIO_CONFIG_RA);
+ reg = inb(SIO_CONFIG_RD);
+ reg = (reg & 0x3F) | 0x40;
+ outb(reg, SIO_CONFIG_RD);
+ outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */
+
+ /* This is a hack. If this is a 2300 or 2400 mot board then there is
+ * no keyboard controller and we have to indicate that.
+ */
+
+ early_read_config_word(0, 0, 0, PCI_VENDOR_ID, &devid);
+ base_mod = inb(MOTOROLA_BASETYPE_REG);
+ if ((devid == PCI_DEVICE_ID_MOTOROLA_HAWK) ||
+ (base_mod == 0xF9) || (base_mod == 0xFA) || (base_mod == 0xE1))
+ prep_keybd_present = 0;
+}
+
+void __init pplus_find_bridges(void)
+{
+ struct pci_controller *hose;
+
+ hose = pcibios_alloc_controller();
+ if (!hose)
+ return;
+
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+
+ hose->pci_mem_offset = PREP_ISA_MEM_BASE;
+ hose->io_base_virt = (void *)PREP_ISA_IO_BASE;
+
+ pci_init_resource(&hose->io_resource, PPLUS_PCI_IO_START,
+ PPLUS_PCI_IO_END, IORESOURCE_IO, "PCI host bridge");
+ pci_init_resource(&hose->mem_resources[0], PPLUS_PROC_PCI_MEM_START,
+ PPLUS_PROC_PCI_MEM_END, IORESOURCE_MEM,
+ "PCI host bridge");
+
+ hose->io_space.start = PPLUS_PCI_IO_START;
+ hose->io_space.end = PPLUS_PCI_IO_END;
+ hose->mem_space.start = PPLUS_PCI_MEM_START;
+ hose->mem_space.end = PPLUS_PCI_MEM_END - HAWK_MPIC_SIZE;
+
+ if (hawk_init(hose, PPLUS_HAWK_PPC_REG_BASE, PPLUS_PROC_PCI_MEM_START,
+ PPLUS_PROC_PCI_MEM_END - HAWK_MPIC_SIZE,
+ PPLUS_PROC_PCI_IO_START, PPLUS_PROC_PCI_IO_END,
+ PPLUS_PROC_PCI_MEM_END - HAWK_MPIC_SIZE + 1)
+ != 0) {
+ printk(KERN_CRIT "Could not initialize host bridge\n");
+
+ }
+
+ pplus_set_VIA_IDE_legacy();
+
+ hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
+
+ ppc_md.pcibios_fixup = pplus_pcibios_fixup;
+ ppc_md.pci_swizzle = common_swizzle;
+}
+
+static int pplus_show_cpuinfo(struct seq_file *m)
+{
+ seq_printf(m, "vendor\t\t: Motorola MCG\n");
+ seq_printf(m, "machine\t\t: %s\n", Motherboard_map_name);
+
+ return 0;
+}
+
+static void __init pplus_setup_arch(void)
+{
+ struct pci_controller *hose;
+
+ if (ppc_md.progress)
+ ppc_md.progress("pplus_setup_arch: enter", 0);
+
+ /* init to some ~sane value until calibrate_delay() runs */
+ loops_per_jiffy = 50000000;
+
+ if (ppc_md.progress)
+ ppc_md.progress("pplus_setup_arch: find_bridges", 0);
+
+ /* Setup PCI host bridge */
+ pplus_find_bridges();
+
+ hose = pci_bus_to_hose(0);
+ isa_io_base = (ulong) hose->io_base_virt;
+
+ if (ppc_md.progress)
+ ppc_md.progress("pplus_setup_arch: set_board_type", 0);
+
+ pplus_set_board_type();
+
+ /* Enable L2. Assume we don't need to flush -- Cort */
+ *(unsigned char *)(PPLUS_L2_CONTROL_REG) |= 3;
+
+#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
+
+ printk(KERN_INFO "Motorola PowerPlus Platform\n");
+ printk(KERN_INFO
+ "Port by MontaVista Software, Inc. (source@mvista.com)\n");
+
+#ifdef CONFIG_VGA_CONSOLE
+ /* remap the VGA memory */
+ vgacon_remap_base = (unsigned long)ioremap(PPLUS_ISA_MEM_BASE,
+ 0x08000000);
+ conswitchp = &vga_con;
+#endif
+#ifdef CONFIG_PPCBUG_NVRAM
+ /* Read in NVRAM data */
+ init_prep_nvram();
+
+ /* if no bootargs, look in NVRAM */
+ if (cmd_line[0] == '\0') {
+ char *bootargs;
+ bootargs = prep_nvram_get_var("bootargs");
+ if (bootargs != NULL) {
+ strcpy(cmd_line, bootargs);
+ /* again.. */
+ strcpy(saved_command_line, cmd_line);
+ }
+ }
+#endif
+ if (ppc_md.progress)
+ ppc_md.progress("pplus_setup_arch: exit", 0);
+}
+
+static void pplus_restart(char *cmd)
+{
+ unsigned long i = 10000;
+
+ local_irq_disable();
+
+ /* set VIA IDE controller into native mode */
+ pplus_set_VIA_IDE_native();
+
+ /* set exception prefix high - to the prom */
+ _nmask_and_or_msr(0, MSR_IP);
+
+ /* make sure bit 0 (reset) is a 0 */
+ outb(inb(0x92) & ~1L, 0x92);
+ /* signal a reset to system control port A - soft reset */
+ outb(inb(0x92) | 1, 0x92);
+
+ while (i != 0)
+ i++;
+ panic("restart failed\n");
+}
+
+static void pplus_halt(void)
+{
+ /* set exception prefix high - to the prom */
+ _nmask_and_or_msr(MSR_EE, MSR_IP);
+
+ /* make sure bit 0 (reset) is a 0 */
+ outb(inb(0x92) & ~1L, 0x92);
+ /* signal a reset to system control port A - soft reset */
+ outb(inb(0x92) | 1, 0x92);
+
+ while (1) ;
+ /*
+ * Not reached
+ */
+}
+
+static void pplus_power_off(void)
+{
+ pplus_halt();
+}
+
+static unsigned int pplus_irq_canonicalize(u_int irq)
+{
+ if (irq == 2)
+ return 9;
+ else
+ return irq;
+}
+
+static void __init pplus_init_IRQ(void)
+{
+ int i;
+
+ if (ppc_md.progress)
+ ppc_md.progress("init_irq: enter", 0);
+
+ OpenPIC_InitSenses = pplus_openpic_initsenses;
+ OpenPIC_NumInitSenses = sizeof(pplus_openpic_initsenses);
+
+ if (OpenPIC_Addr != NULL) {
+
+ openpic_set_sources(0, 16, OpenPIC_Addr + 0x10000);
+ openpic_init(NUM_8259_INTERRUPTS);
+ openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
+ i8259_irq);
+ ppc_md.get_irq = openpic_get_irq;
+ }
+
+ for (i = 0; i < NUM_8259_INTERRUPTS; i++)
+ irq_desc[i].handler = &i8259_pic;
+
+ i8259_init(0);
+
+ if (ppc_md.progress)
+ ppc_md.progress("init_irq: exit", 0);
+}
+
+#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
+/*
+ * IDE stuff.
+ */
+static int pplus_ide_default_irq(unsigned long base)
+{
+ switch (base) {
+ case 0x1f0:
+ return 14;
+ case 0x170:
+ return 15;
+ default:
+ return 0;
+ }
+}
+
+static unsigned long pplus_ide_default_io_base(int index)
+{
+ switch (index) {
+ case 0:
+ return 0x1f0;
+ case 1:
+ return 0x170;
+ default:
+ return 0;
+ }
+}
+
+static void __init
+pplus_ide_init_hwif_ports(hw_regs_t * hw, unsigned long data_port,
+ unsigned long ctrl_port, int *irq)
+{
+ unsigned long reg = data_port;
+ int i;
+
+ for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
+ hw->io_ports[i] = reg;
+ reg += 1;
+ }
+
+ if (ctrl_port)
+ hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
+ else
+ hw->io_ports[IDE_CONTROL_OFFSET] =
+ hw->io_ports[IDE_DATA_OFFSET] + 0x206;
+
+ if (irq != NULL)
+ *irq = pplus_ide_default_irq(data_port);
+}
+#endif
+
+#ifdef CONFIG_SMP
+/* PowerPlus (MTX) support */
+static int __init smp_pplus_probe(void)
+{
+ extern int mot_multi;
+
+ if (mot_multi) {
+ openpic_request_IPIs();
+ smp_hw_index[1] = 1;
+ return 2;
+ }
+
+ return 1;
+}
+
+static void __init smp_pplus_kick_cpu(int nr)
+{
+ *(unsigned long *)KERNELBASE = nr;
+ asm volatile ("dcbf 0,%0"::"r" (KERNELBASE):"memory");
+ printk(KERN_INFO "CPU1 reset, waiting\n");
+}
+
+static void __init smp_pplus_setup_cpu(int cpu_nr)
+{
+ if (OpenPIC_Addr)
+ do_openpic_setup_cpu();
+}
+
+static struct smp_ops_t pplus_smp_ops = {
+ smp_openpic_message_pass,
+ smp_pplus_probe,
+ smp_pplus_kick_cpu,
+ smp_pplus_setup_cpu,
+ .give_timebase = smp_generic_give_timebase,
+ .take_timebase = smp_generic_take_timebase,
+};
+#endif /* CONFIG_SMP */
+
+#ifdef DUMP_DBATS
+static void print_dbat(int idx, u32 bat)
+{
+
+ char str[64];
+
+ sprintf(str, "DBAT%c%c = 0x%08x\n",
+ (char)((idx - DBAT0U) / 2) + '0', (idx & 1) ? 'L' : 'U', bat);
+ ppc_md.progress(str, 0);
+}
+
+#define DUMP_DBAT(x) \
+ do { \
+ u32 __temp = mfspr(x);\
+ print_dbat(x, __temp); \
+ } while (0)
+
+static void dump_dbats(void)
+{
+ if (ppc_md.progress) {
+ DUMP_DBAT(DBAT0U);
+ DUMP_DBAT(DBAT0L);
+ DUMP_DBAT(DBAT1U);
+ DUMP_DBAT(DBAT1L);
+ DUMP_DBAT(DBAT2U);
+ DUMP_DBAT(DBAT2L);
+ DUMP_DBAT(DBAT3U);
+ DUMP_DBAT(DBAT3L);
+ }
+}
+#endif
+
+static unsigned long __init pplus_find_end_of_memory(void)
+{
+ unsigned long total;
+
+ if (ppc_md.progress)
+ ppc_md.progress("pplus_find_end_of_memory", 0);
+
+#ifdef DUMP_DBATS
+ dump_dbats();
+#endif
+
+ total = hawk_get_mem_size(PPLUS_HAWK_SMC_BASE);
+ return (total);
+}
+
+static void __init pplus_map_io(void)
+{
+ io_block_mapping(PPLUS_ISA_IO_BASE, PPLUS_ISA_IO_BASE, 0x10000000,
+ _PAGE_IO);
+ io_block_mapping(0xfef80000, 0xfef80000, 0x00080000, _PAGE_IO);
+}
+
+static void __init pplus_init2(void)
+{
+#ifdef CONFIG_NVRAM
+ request_region(PREP_NVRAM_AS0, 0x8, "nvram");
+#endif
+ request_region(0x20, 0x20, "pic1");
+ request_region(0xa0, 0x20, "pic2");
+ request_region(0x00, 0x20, "dma1");
+ request_region(0x40, 0x20, "timer");
+ request_region(0x80, 0x10, "dma page reg");
+ request_region(0xc0, 0x20, "dma2");
+}
+
+/*
+ * Set BAT 2 to access 0x8000000 so progress messages will work and set BAT 3
+ * to 0xf0000000 to access Falcon/Raven or Hawk registers
+ */
+static __inline__ void pplus_set_bat(void)
+{
+ /* wait for all outstanding memory accesses to complete */
+ mb();
+
+ /* setup DBATs */
+ mtspr(SPRN_DBAT2U, 0x80001ffe);
+ mtspr(SPRN_DBAT2L, 0x8000002a);
+ mtspr(SPRN_DBAT3U, 0xf0001ffe);
+ mtspr(SPRN_DBAT3L, 0xf000002a);
+
+ /* wait for updates */
+ mb();
+}
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7)
+{
+ parse_bootinfo(find_bootinfo());
+
+ /* Map in board regs, etc. */
+ pplus_set_bat();
+
+ isa_io_base = PREP_ISA_IO_BASE;
+ isa_mem_base = PREP_ISA_MEM_BASE;
+ pci_dram_offset = PREP_PCI_DRAM_OFFSET;
+ ISA_DMA_THRESHOLD = 0x00ffffff;
+ DMA_MODE_READ = 0x44;
+ DMA_MODE_WRITE = 0x48;
+
+ ppc_md.setup_arch = pplus_setup_arch;
+ ppc_md.show_cpuinfo = pplus_show_cpuinfo;
+ ppc_md.irq_canonicalize = pplus_irq_canonicalize;
+ ppc_md.init_IRQ = pplus_init_IRQ;
+ /* this gets changed later on if we have an OpenPIC -- Cort */
+ ppc_md.get_irq = i8259_irq;
+ ppc_md.init = pplus_init2;
+
+ ppc_md.restart = pplus_restart;
+ ppc_md.power_off = pplus_power_off;
+ ppc_md.halt = pplus_halt;
+
+ TODC_INIT(TODC_TYPE_MK48T59, PREP_NVRAM_AS0, PREP_NVRAM_AS1,
+ PREP_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;
+
+ ppc_md.find_end_of_memory = pplus_find_end_of_memory;
+ ppc_md.setup_io_mappings = pplus_map_io;
+
+#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
+ ppc_ide_md.default_irq = pplus_ide_default_irq;
+ ppc_ide_md.default_io_base = pplus_ide_default_io_base;
+ ppc_ide_md.ide_init_hwif = pplus_ide_init_hwif_ports;
+#endif
+
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+ ppc_md.progress = gen550_progress;
+#endif /* CONFIG_SERIAL_TEXT_DEBUG */
+#ifdef CONFIG_KGDB
+ ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
+#endif
+#ifdef CONFIG_SMP
+ ppc_md.smp_ops = &pplus_smp_ops;
+#endif /* CONFIG_SMP */
+}
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