Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/ppc/platforms/sandpoint.c b/arch/ppc/platforms/sandpoint.c
new file mode 100644
index 0000000..531bfa0
--- /dev/null
+++ b/arch/ppc/platforms/sandpoint.c
@@ -0,0 +1,742 @@
+/*
+ * arch/ppc/platforms/sandpoint_setup.c
+ *
+ * Board setup routines for the Motorola SPS Sandpoint Test Platform.
+ *
+ * Author: Mark A. Greer
+ * mgreer@mvista.com
+ *
+ * 2000-2003 (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.
+ */
+
+/*
+ * This file adds support for the Motorola SPS Sandpoint Test Platform.
+ * These boards have a PPMC slot for the processor so any combination
+ * of cpu and host bridge can be attached. This port is for an 8240 PPMC
+ * module from Motorola SPS and other closely related cpu/host bridge
+ * combinations (e.g., 750/755/7400 with MPC107 host bridge).
+ * The sandpoint itself has a Windbond 83c553 (PCI-ISA bridge, 2 DMA ctlrs, 2
+ * cascaded 8259 interrupt ctlrs, 8254 Timer/Counter, and an IDE ctlr), a
+ * National 87308 (RTC, 2 UARTs, Keyboard & mouse ctlrs, and a floppy ctlr),
+ * and 4 PCI slots (only 2 of which are usable; the other 2 are keyed for 3.3V
+ * but are really 5V).
+ *
+ * The firmware on the sandpoint is called DINK (not my acronym :). This port
+ * depends on DINK to do some basic initialization (e.g., initialize the memory
+ * ctlr) and to ensure that the processor is using MAP B (CHRP map).
+ *
+ * The switch settings for the Sandpoint board MUST be as follows:
+ * S3: down
+ * S4: up
+ * S5: up
+ * S6: down
+ *
+ * 'down' is in the direction from the PCI slots towards the PPMC slot;
+ * 'up' is in the direction from the PPMC slot towards the PCI slots.
+ * Be careful, the way the sandpoint board is installed in XT chasses will
+ * make the directions reversed.
+ *
+ * Since Motorola listened to our suggestions for improvement, we now have
+ * the Sandpoint X3 board. All of the PCI slots are available, it uses
+ * the serial interrupt interface (just a hardware thing we need to
+ * configure properly).
+ *
+ * Use the default X3 switch settings. The interrupts are then:
+ * EPIC Source
+ * 0 SIOINT (8259, active low)
+ * 1 PCI #1
+ * 2 PCI #2
+ * 3 PCI #3
+ * 4 PCI #4
+ * 7 Winbond INTC (IDE interrupt)
+ * 8 Winbond INTD (IDE interrupt)
+ *
+ *
+ * Motorola has finally released a version of DINK32 that correctly
+ * (seemingly) initalizes the memory controller correctly, regardless
+ * of the amount of memory in the system. Once a method of determining
+ * what version of DINK initializes the system for us, if applicable, is
+ * found, we can hopefully stop hardcoding 32MB of RAM.
+ */
+
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/major.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/root_dev.h>
+#include <linux/serial.h>
+#include <linux/tty.h> /* for linux/serial_core.h */
+#include <linux/serial_core.h>
+
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/time.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/smp.h>
+#include <asm/vga.h>
+#include <asm/open_pic.h>
+#include <asm/i8259.h>
+#include <asm/todc.h>
+#include <asm/bootinfo.h>
+#include <asm/mpc10x.h>
+#include <asm/pci-bridge.h>
+#include <asm/kgdb.h>
+
+#include "sandpoint.h"
+
+/* Set non-zero if an X2 Sandpoint detected. */
+static int sandpoint_is_x2;
+
+unsigned char __res[sizeof(bd_t)];
+
+static void sandpoint_halt(void);
+static void sandpoint_probe_type(void);
+
+/*
+ * Define all of the IRQ senses and polarities. Taken from the
+ * Sandpoint X3 User's manual.
+ */
+static u_char sandpoint_openpic_initsenses[] __initdata = {
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 0: SIOINT */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 2: PCI Slot 1 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 3: PCI Slot 2 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 4: PCI Slot 3 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 5: PCI Slot 4 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 8: IDE (INT C) */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE) /* 9: IDE (INT D) */
+};
+
+/*
+ * Motorola SPS Sandpoint interrupt routing.
+ */
+static inline int
+x3_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ static char pci_irq_table[][4] =
+ /*
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ { 16, 0, 0, 0 }, /* IDSEL 11 - i8259 on Winbond */
+ { 0, 0, 0, 0 }, /* IDSEL 12 - unused */
+ { 18, 21, 20, 19 }, /* IDSEL 13 - PCI slot 1 */
+ { 19, 18, 21, 20 }, /* IDSEL 14 - PCI slot 2 */
+ { 20, 19, 18, 21 }, /* IDSEL 15 - PCI slot 3 */
+ { 21, 20, 19, 18 }, /* IDSEL 16 - PCI slot 4 */
+ };
+
+ const long min_idsel = 11, max_idsel = 16, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+
+static inline int
+x2_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ static char pci_irq_table[][4] =
+ /*
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ { 18, 0, 0, 0 }, /* IDSEL 11 - i8259 on Windbond */
+ { 0, 0, 0, 0 }, /* IDSEL 12 - unused */
+ { 16, 17, 18, 19 }, /* IDSEL 13 - PCI slot 1 */
+ { 17, 18, 19, 16 }, /* IDSEL 14 - PCI slot 2 */
+ { 18, 19, 16, 17 }, /* IDSEL 15 - PCI slot 3 */
+ { 19, 16, 17, 18 }, /* IDSEL 16 - PCI slot 4 */
+ };
+
+ const long min_idsel = 11, max_idsel = 16, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+
+static void __init
+sandpoint_setup_winbond_83553(struct pci_controller *hose)
+{
+ int devfn;
+
+ /*
+ * Route IDE interrupts directly to the 8259's IRQ 14 & 15.
+ * We can't route the IDE interrupt to PCI INTC# or INTD# because those
+ * woule interfere with the PMC's INTC# and INTD# lines.
+ */
+ /*
+ * Winbond Fcn 0
+ */
+ devfn = PCI_DEVFN(11,0);
+
+ early_write_config_byte(hose,
+ 0,
+ devfn,
+ 0x43, /* IDE Interrupt Routing Control */
+ 0xef);
+ early_write_config_word(hose,
+ 0,
+ devfn,
+ 0x44, /* PCI Interrupt Routing Control */
+ 0x0000);
+
+ /* Want ISA memory cycles to be forwarded to PCI bus */
+ early_write_config_byte(hose,
+ 0,
+ devfn,
+ 0x48, /* ISA-to-PCI Addr Decoder Control */
+ 0xf0);
+
+ /* Enable Port 92. */
+ early_write_config_byte(hose,
+ 0,
+ devfn,
+ 0x4e, /* AT System Control Register */
+ 0x06);
+ /*
+ * Winbond Fcn 1
+ */
+ devfn = PCI_DEVFN(11,1);
+
+ /* Put IDE controller into native mode. */
+ early_write_config_byte(hose,
+ 0,
+ devfn,
+ 0x09, /* Programming interface Register */
+ 0x8f);
+
+ /* Init IRQ routing, enable both ports, disable fast 16 */
+ early_write_config_dword(hose,
+ 0,
+ devfn,
+ 0x40, /* IDE Control/Status Register */
+ 0x00ff0011);
+ return;
+}
+
+/* On the sandpoint X2, we must avoid sending configuration cycles to
+ * device #12 (IDSEL addr = AD12).
+ */
+static int
+x2_exclude_device(u_char bus, u_char devfn)
+{
+ if ((bus == 0) && (PCI_SLOT(devfn) == SANDPOINT_HOST_BRIDGE_IDSEL))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ else
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static void __init
+sandpoint_find_bridges(void)
+{
+ struct pci_controller *hose;
+
+ hose = pcibios_alloc_controller();
+
+ if (!hose)
+ return;
+
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+
+ if (mpc10x_bridge_init(hose,
+ MPC10X_MEM_MAP_B,
+ MPC10X_MEM_MAP_B,
+ MPC10X_MAPB_EUMB_BASE) == 0) {
+
+ /* Do early winbond init, then scan PCI bus */
+ sandpoint_setup_winbond_83553(hose);
+ hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
+
+ ppc_md.pcibios_fixup = NULL;
+ ppc_md.pcibios_fixup_bus = NULL;
+ ppc_md.pci_swizzle = common_swizzle;
+ if (sandpoint_is_x2) {
+ ppc_md.pci_map_irq = x2_map_irq;
+ ppc_md.pci_exclude_device = x2_exclude_device;
+ } else
+ ppc_md.pci_map_irq = x3_map_irq;
+ }
+ else {
+ if (ppc_md.progress)
+ ppc_md.progress("Bridge init failed", 0x100);
+ printk("Host bridge init failed\n");
+ }
+
+ return;
+}
+
+static void __init
+sandpoint_setup_arch(void)
+{
+ /* Probe for Sandpoint model */
+ sandpoint_probe_type();
+ if (sandpoint_is_x2)
+ epic_serial_mode = 0;
+
+ loops_per_jiffy = 100000000 / 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_HDA1;
+#endif
+
+ /* Lookup PCI host bridges */
+ sandpoint_find_bridges();
+
+ printk(KERN_INFO "Motorola SPS Sandpoint Test Platform\n");
+ printk(KERN_INFO "Port by MontaVista Software, Inc. (source@mvista.com)\n");
+
+ /* DINK32 12.3 and below do not correctly enable any caches.
+ * We will do this now with good known values. Future versions
+ * of DINK32 are supposed to get this correct.
+ */
+ if (cpu_has_feature(CPU_FTR_SPEC7450))
+ /* 745x is different. We only want to pass along enable. */
+ _set_L2CR(L2CR_L2E);
+ else if (cpu_has_feature(CPU_FTR_L2CR))
+ /* All modules have 1MB of L2. We also assume that an
+ * L2 divisor of 3 will work.
+ */
+ _set_L2CR(L2CR_L2E | L2CR_L2SIZ_1MB | L2CR_L2CLK_DIV3
+ | L2CR_L2RAM_PIPE | L2CR_L2OH_1_0 | L2CR_L2DF);
+#if 0
+ /* Untested right now. */
+ if (cpu_has_feature(CPU_FTR_L3CR)) {
+ /* Magic value. */
+ _set_L3CR(0x8f032000);
+ }
+#endif
+}
+
+#define SANDPOINT_87308_CFG_ADDR 0x15c
+#define SANDPOINT_87308_CFG_DATA 0x15d
+
+#define SANDPOINT_87308_CFG_INB(addr, byte) { \
+ outb((addr), SANDPOINT_87308_CFG_ADDR); \
+ (byte) = inb(SANDPOINT_87308_CFG_DATA); \
+}
+
+#define SANDPOINT_87308_CFG_OUTB(addr, byte) { \
+ outb((addr), SANDPOINT_87308_CFG_ADDR); \
+ outb((byte), SANDPOINT_87308_CFG_DATA); \
+}
+
+#define SANDPOINT_87308_SELECT_DEV(dev_num) { \
+ SANDPOINT_87308_CFG_OUTB(0x07, (dev_num)); \
+}
+
+#define SANDPOINT_87308_DEV_ENABLE(dev_num) { \
+ SANDPOINT_87308_SELECT_DEV(dev_num); \
+ SANDPOINT_87308_CFG_OUTB(0x30, 0x01); \
+}
+
+/*
+ * To probe the Sandpoint type, we need to check for a connection between GPIO
+ * pins 6 and 7 on the NS87308 SuperIO.
+ */
+static void __init sandpoint_probe_type(void)
+{
+ u8 x;
+ /* First, ensure that the GPIO pins are enabled. */
+ SANDPOINT_87308_SELECT_DEV(0x07); /* Select GPIO logical device */
+ SANDPOINT_87308_CFG_OUTB(0x60, 0x07); /* Base address 0x700 */
+ SANDPOINT_87308_CFG_OUTB(0x61, 0x00);
+ SANDPOINT_87308_CFG_OUTB(0x30, 0x01); /* Enable */
+
+ /* Now, set pin 7 to output and pin 6 to input. */
+ outb((inb(0x701) | 0x80) & 0xbf, 0x701);
+ /* Set push-pull output */
+ outb(inb(0x702) | 0x80, 0x702);
+ /* Set pull-up on input */
+ outb(inb(0x703) | 0x40, 0x703);
+ /* Set output high and check */
+ x = inb(0x700);
+ outb(x | 0x80, 0x700);
+ x = inb(0x700);
+ sandpoint_is_x2 = ! (x & 0x40);
+ if (ppc_md.progress && sandpoint_is_x2)
+ ppc_md.progress("High output says X2", 0);
+ /* Set output low and check */
+ outb(x & 0x7f, 0x700);
+ sandpoint_is_x2 |= inb(0x700) & 0x40;
+ if (ppc_md.progress && sandpoint_is_x2)
+ ppc_md.progress("Low output says X2", 0);
+ if (ppc_md.progress && ! sandpoint_is_x2)
+ ppc_md.progress("Sandpoint is X3", 0);
+}
+
+/*
+ * Fix IDE interrupts.
+ */
+static int __init
+sandpoint_fix_winbond_83553(void)
+{
+ /* Make some 8259 interrupt level sensitive */
+ outb(0xe0, 0x4d0);
+ outb(0xde, 0x4d1);
+
+ return 0;
+}
+
+arch_initcall(sandpoint_fix_winbond_83553);
+
+/*
+ * Initialize the ISA devices on the Nat'l PC87308VUL SuperIO chip.
+ */
+static int __init
+sandpoint_setup_natl_87308(void)
+{
+ u_char reg;
+
+ /*
+ * Enable all the devices on the Super I/O chip.
+ */
+ SANDPOINT_87308_SELECT_DEV(0x00); /* Select kbd logical device */
+ SANDPOINT_87308_CFG_OUTB(0xf0, 0x00); /* Set KBC clock to 8 Mhz */
+ SANDPOINT_87308_DEV_ENABLE(0x00); /* Enable keyboard */
+ SANDPOINT_87308_DEV_ENABLE(0x01); /* Enable mouse */
+ SANDPOINT_87308_DEV_ENABLE(0x02); /* Enable rtc */
+ SANDPOINT_87308_DEV_ENABLE(0x03); /* Enable fdc (floppy) */
+ SANDPOINT_87308_DEV_ENABLE(0x04); /* Enable parallel */
+ SANDPOINT_87308_DEV_ENABLE(0x05); /* Enable UART 2 */
+ SANDPOINT_87308_CFG_OUTB(0xf0, 0x82); /* Enable bank select regs */
+ SANDPOINT_87308_DEV_ENABLE(0x06); /* Enable UART 1 */
+ SANDPOINT_87308_CFG_OUTB(0xf0, 0x82); /* Enable bank select regs */
+
+ /* 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! */
+
+ return 0;
+}
+
+arch_initcall(sandpoint_setup_natl_87308);
+
+static int __init
+sandpoint_request_io(void)
+{
+ 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");
+
+ return 0;
+}
+
+arch_initcall(sandpoint_request_io);
+
+/*
+ * Interrupt setup and service. Interrrupts on the Sandpoint come
+ * from the four PCI slots plus the 8259 in the Winbond Super I/O (SIO).
+ * The 8259 is cascaded from EPIC IRQ0, IRQ1-4 map to PCI slots 1-4,
+ * IDE is on EPIC 7 and 8.
+ */
+static void __init
+sandpoint_init_IRQ(void)
+{
+ int i;
+
+ OpenPIC_InitSenses = sandpoint_openpic_initsenses;
+ OpenPIC_NumInitSenses = sizeof(sandpoint_openpic_initsenses);
+
+ mpc10x_set_openpic();
+ openpic_hookup_cascade(sandpoint_is_x2 ? 17 : NUM_8259_INTERRUPTS, "82c59 cascade",
+ i8259_irq);
+
+ /*
+ * openpic_init() has set up irq_desc[16-31] to be openpic
+ * interrupts. We need to set irq_desc[0-15] to be i8259
+ * interrupts.
+ */
+ for(i=0; i < NUM_8259_INTERRUPTS; i++)
+ irq_desc[i].handler = &i8259_pic;
+
+ /*
+ * The EPIC allows for a read in the range of 0xFEF00000 ->
+ * 0xFEFFFFFF to generate a PCI interrupt-acknowledge transaction.
+ */
+ i8259_init(0xfef00000);
+}
+
+static u32
+sandpoint_irq_canonicalize(u32 irq)
+{
+ if (irq == 2)
+ return 9;
+ else
+ return irq;
+}
+
+static unsigned long __init
+sandpoint_find_end_of_memory(void)
+{
+ bd_t *bp = (bd_t *)__res;
+
+ if (bp->bi_memsize)
+ return bp->bi_memsize;
+
+ /* DINK32 13.0 correctly initalizes things, so iff you use
+ * this you _should_ be able to change this instead of a
+ * hardcoded value. */
+#if 0
+ return mpc10x_get_mem_size(MPC10X_MEM_MAP_B);
+#else
+ return 32*1024*1024;
+#endif
+}
+
+static void __init
+sandpoint_map_io(void)
+{
+ io_block_mapping(0xfe000000, 0xfe000000, 0x02000000, _PAGE_IO);
+}
+
+static void
+sandpoint_restart(char *cmd)
+{
+ local_irq_disable();
+
+ /* Set exception prefix high - to the firmware */
+ _nmask_and_or_msr(0, MSR_IP);
+
+ /* Reset system via Port 92 */
+ outb(0x00, 0x92);
+ outb(0x01, 0x92);
+ for(;;); /* Spin until reset happens */
+}
+
+static void
+sandpoint_power_off(void)
+{
+ local_irq_disable();
+ for(;;); /* No way to shut power off with software */
+ /* NOTREACHED */
+}
+
+static void
+sandpoint_halt(void)
+{
+ sandpoint_power_off();
+ /* NOTREACHED */
+}
+
+static int
+sandpoint_show_cpuinfo(struct seq_file *m)
+{
+ seq_printf(m, "vendor\t\t: Motorola SPS\n");
+ seq_printf(m, "machine\t\t: Sandpoint\n");
+
+ return 0;
+}
+
+#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
+/*
+ * IDE support.
+ */
+static int sandpoint_ide_ports_known = 0;
+static unsigned long sandpoint_ide_regbase[MAX_HWIFS];
+static unsigned long sandpoint_ide_ctl_regbase[MAX_HWIFS];
+static unsigned long sandpoint_idedma_regbase;
+
+static void
+sandpoint_ide_probe(void)
+{
+ struct pci_dev *pdev = pci_get_device(PCI_VENDOR_ID_WINBOND,
+ PCI_DEVICE_ID_WINBOND_82C105, NULL);
+
+ if (pdev) {
+ sandpoint_ide_regbase[0]=pdev->resource[0].start;
+ sandpoint_ide_regbase[1]=pdev->resource[2].start;
+ sandpoint_ide_ctl_regbase[0]=pdev->resource[1].start;
+ sandpoint_ide_ctl_regbase[1]=pdev->resource[3].start;
+ sandpoint_idedma_regbase=pdev->resource[4].start;
+ pci_dev_put(pdev);
+ }
+
+ sandpoint_ide_ports_known = 1;
+}
+
+static int
+sandpoint_ide_default_irq(unsigned long base)
+{
+ if (sandpoint_ide_ports_known == 0)
+ sandpoint_ide_probe();
+
+ if (base == sandpoint_ide_regbase[0])
+ return SANDPOINT_IDE_INT0;
+ else if (base == sandpoint_ide_regbase[1])
+ return SANDPOINT_IDE_INT1;
+ else
+ return 0;
+}
+
+static unsigned long
+sandpoint_ide_default_io_base(int index)
+{
+ if (sandpoint_ide_ports_known == 0)
+ sandpoint_ide_probe();
+
+ return sandpoint_ide_regbase[index];
+}
+
+static void __init
+sandpoint_ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
+ unsigned long ctrl_port, int *irq)
+{
+ unsigned long reg = data_port;
+ uint alt_status_base;
+ int i;
+
+ for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
+ hw->io_ports[i] = reg++;
+ }
+
+ if (data_port == sandpoint_ide_regbase[0]) {
+ alt_status_base = sandpoint_ide_ctl_regbase[0] + 2;
+ hw->irq = 14;
+ }
+ else if (data_port == sandpoint_ide_regbase[1]) {
+ alt_status_base = sandpoint_ide_ctl_regbase[1] + 2;
+ hw->irq = 15;
+ }
+ else {
+ alt_status_base = 0;
+ hw->irq = 0;
+ }
+
+ if (ctrl_port) {
+ hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
+ } else {
+ hw->io_ports[IDE_CONTROL_OFFSET] = alt_status_base;
+ }
+
+ if (irq != NULL) {
+ *irq = hw->irq;
+ }
+}
+#endif
+
+/*
+ * Set BAT 3 to map 0xf8000000 to end of physical memory space 1-to-1.
+ */
+static __inline__ void
+sandpoint_set_bat(void)
+{
+ unsigned long bat3u, bat3l;
+
+ __asm__ __volatile__(
+ " lis %0,0xf800\n \
+ ori %1,%0,0x002a\n \
+ ori %0,%0,0x0ffe\n \
+ mtspr 0x21e,%0\n \
+ mtspr 0x21f,%1\n \
+ isync\n \
+ sync "
+ : "=r" (bat3u), "=r" (bat3l));
+}
+
+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());
+
+ /* ASSUMPTION: If both r3 (bd_t pointer) and r6 (cmdline pointer)
+ * are non-zero, then we should use the board info from the bd_t
+ * structure and the cmdline pointed to by r6 instead of the
+ * information from birecs, if any. Otherwise, use the information
+ * from birecs as discovered by the preceeding call to
+ * parse_bootinfo(). This rule should work with both PPCBoot, which
+ * uses a bd_t board info structure, and the kernel boot wrapper,
+ * which uses birecs.
+ */
+ if (r3 && r6) {
+ /* copy board info structure */
+ memcpy( (void *)__res,(void *)(r3+KERNELBASE), sizeof(bd_t) );
+ /* copy command line */
+ *(char *)(r7+KERNELBASE) = 0;
+ strcpy(cmd_line, (char *)(r6+KERNELBASE));
+ }
+
+#ifdef CONFIG_BLK_DEV_INITRD
+ /* take care of initrd if we have one */
+ if (r4) {
+ initrd_start = r4 + KERNELBASE;
+ initrd_end = r5 + KERNELBASE;
+ }
+#endif /* CONFIG_BLK_DEV_INITRD */
+
+ /* Map in board regs, etc. */
+ sandpoint_set_bat();
+
+ isa_io_base = MPC10X_MAPB_ISA_IO_BASE;
+ isa_mem_base = MPC10X_MAPB_ISA_MEM_BASE;
+ pci_dram_offset = MPC10X_MAPB_DRAM_OFFSET;
+ ISA_DMA_THRESHOLD = 0x00ffffff;
+ DMA_MODE_READ = 0x44;
+ DMA_MODE_WRITE = 0x48;
+
+ ppc_md.setup_arch = sandpoint_setup_arch;
+ ppc_md.show_cpuinfo = sandpoint_show_cpuinfo;
+ ppc_md.irq_canonicalize = sandpoint_irq_canonicalize;
+ ppc_md.init_IRQ = sandpoint_init_IRQ;
+ ppc_md.get_irq = openpic_get_irq;
+
+ ppc_md.restart = sandpoint_restart;
+ ppc_md.power_off = sandpoint_power_off;
+ ppc_md.halt = sandpoint_halt;
+
+ ppc_md.find_end_of_memory = sandpoint_find_end_of_memory;
+ ppc_md.setup_io_mappings = sandpoint_map_io;
+
+ TODC_INIT(TODC_TYPE_PC97307, 0x70, 0x00, 0x71, 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_mc146818_read_val;
+ ppc_md.nvram_write_val = todc_mc146818_write_val;
+
+#ifdef CONFIG_KGDB
+ ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
+#endif
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+ ppc_md.progress = gen550_progress;
+#endif
+
+#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
+ ppc_ide_md.default_irq = sandpoint_ide_default_irq;
+ ppc_ide_md.default_io_base = sandpoint_ide_default_io_base;
+ ppc_ide_md.ide_init_hwif = sandpoint_ide_init_hwif_ports;
+#endif
+}