mirror of https://gitee.com/openkylin/linux.git
342 lines
8.3 KiB
C
342 lines
8.3 KiB
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/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/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);
|
|
|
|
i8259_init(0, 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;
|
|
}
|