linux/arch/ppc/platforms/sandpoint.c
Kumar Gala 682afbbd14 [PATCH] ppc32: Add support for MPC8245 8250 serial ports on Sandpoint
Added platform device initialization for the two 8250 style UARTs that
exist on the MPC8245.  Additionally, updated the Sandpoint code to enable
one of these UARTs if an MPC8245 is connected to it.

Signed-off-by: Matt McClintock <msm@freescale.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:24 -07:00

763 lines
20 KiB
C

/*
* 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 <linux/serial_8250.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 <asm/ppc_sys.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();
if (strncmp (cur_ppc_sys_spec->ppc_sys_name, "8245", 4) == 0)
{
bd_t *bp = (bd_t *)__res;
struct plat_serial8250_port *pdata;
pdata = (struct plat_serial8250_port *) ppc_sys_get_pdata(MPC10X_DUART);
if (pdata)
{
pdata[0].uartclk = bp->bi_busfreq;
pdata[0].membase = ioremap(pdata[0].mapbase, 0x100);
/* this disables the 2nd serial port on the DUART
* since the sandpoint does not have it connected */
pdata[1].uartclk = 0;
pdata[1].irq = 0;
pdata[1].mapbase = 0;
}
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
}