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/*
* arch/ppc/platforms/mvme5100_setup.c
*
* Board setup routines for the Motorola MVME5100.
*
* Author: Matt Porter <mporter@mvista.com>
*
* 2001 (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/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/blk.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 <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/open_pic.h>
#include <asm/i8259.h>
#include <platforms/mvme5100.h>
#include <asm/todc.h>
#include <asm/pci-bridge.h>
#include <asm/bootinfo.h>
#include <asm/pplus.h>
extern char cmd_line[];
static u_char mvme5100_openpic_initsenses[] __initdata = {
0, /* 16: i8259 cascade (active high) */
1, /* 17: TL16C550 UART 1,2 */
1, /* 18: Enet 1 (front panel or P2) */
1, /* 19: Hawk Watchdog 1,2 */
1, /* 20: DS1621 thermal alarm */
1, /* 21: Universe II LINT0# */
1, /* 22: Universe II LINT1# */
1, /* 23: Universe II LINT2# */
1, /* 24: Universe II LINT3# */
1, /* 25: PMC1 INTA#, PMC2 INTB# */
1, /* 26: PMC1 INTB#, PMC2 INTC# */
1, /* 27: PMC1 INTC#, PMC2 INTD# */
1, /* 28: PMC1 INTD#, PMC2 INTA# */
1, /* 29: Enet 2 (front panel) */
1, /* 30: Abort Switch */
1, /* 31: RTC Alarm */
};
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
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#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 */
pplus_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);
#ifdef CONFIG_MVME5100_IPMC761_PRESENT
openpic_init(1, NUM_8259_INTERRUPTS, NULL, -1);
for(i=0; i < NUM_8259_INTERRUPTS; i++)
irq_desc[i].handler = &i8259_pic;
i8259_init(NULL);
#else
openpic_init(1, 0, NULL, -1);
#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)
{
unsigned long bat3u, bat3l;
static int mapping_set = 0;
if (!mapping_set) {
__asm__ __volatile__(
" lis %0,0xf000\n \
ori %1,%0,0x002a\n \
ori %0,%0,0x1ffe\n \
mtspr 0x21e,%0\n \
mtspr 0x21f,%1\n \
isync\n \
sync "
: "=r" (bat3u), "=r" (bat3l));
mapping_set = 1;
}
return;
}
static unsigned long __init
mvme5100_find_end_of_memory(void)
{
mvme5100_set_bat();
return pplus_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());
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;
ppc_md.progress = NULL;
}