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/*
* Setup pointers to hardware dependand routines.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1996, 1997 by Ralf Baechle
*/
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/mm.h>
#include <asm/bootinfo.h>
#include <asm/keyboard.h>
#include <asm/irq.h>
#include <asm/jazz.h>
#include <asm/ptrace.h>
#include <asm/reboot.h>
#include <asm/vector.h>
#include <asm/io.h>
#include <asm/pgtable.h>
/*
* Initial irq handlers.
*/
static void no_action(int cpl, void *dev_id, struct pt_regs *regs) { }
/*
* IRQ2 is cascade interrupt to second interrupt controller
*/
static struct irqaction irq2 = { no_action, 0, 0, "cascade", NULL, NULL};
extern asmlinkage void jazz_handle_int(void);
extern asmlinkage void jazz_fd_cacheflush(const void *addr, size_t size);
extern struct feature jazz_feature;
extern void jazz_keyboard_setup(void);
extern void jazz_machine_restart(char *command);
extern void jazz_machine_halt(void);
extern void jazz_machine_power_off(void);
void (*board_time_init)(struct irqaction *irq);
__initfunc(static void jazz_time_init(struct irqaction *irq))
{
/* set the clock to 100 Hz */
r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
setup_x86_irq(0, irq);
}
__initfunc(static void jazz_irq_setup(void))
{
set_except_vector(0, jazz_handle_int);
r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
JAZZ_IE_ETHERNET |
JAZZ_IE_SCSI |
JAZZ_IE_SERIAL1 |
JAZZ_IE_SERIAL2 |
JAZZ_IE_PARALLEL |
JAZZ_IE_FLOPPY);
r4030_read_reg16(JAZZ_IO_IRQ_SOURCE); /* clear pending IRQs */
r4030_read_reg32(JAZZ_R4030_INVAL_ADDR); /* clear error bits */
set_cp0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
/* set the clock to 100 Hz */
r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
request_region(0x20, 0x20, "pic1");
request_region(0xa0, 0x20, "pic2");
setup_x86_irq(2, &irq2);
}
__initfunc(void jazz_setup(void))
{
tag *atag;
/*
* we just check if a tag_screen_info can be gathered
* in setup_arch(), if yes we don't proceed futher...
*/
atag = bi_TagFind(tag_screen_info);
if (!atag) {
/*
* If no, we try to find the tag_arc_displayinfo which is
* always created by Milo for an ARC box (for now Milo only
* works on ARC boxes :) -Stoned.
*/
atag = bi_TagFind(tag_arcdisplayinfo);
if (atag) {
screen_info.orig_x =
((mips_arc_DisplayInfo*)TAGVALPTR(atag))->cursor_x;
screen_info.orig_y =
((mips_arc_DisplayInfo*)TAGVALPTR(atag))->cursor_y;
screen_info.orig_video_cols =
((mips_arc_DisplayInfo*)TAGVALPTR(atag))->columns;
screen_info.orig_video_lines =
((mips_arc_DisplayInfo*)TAGVALPTR(atag))->lines;
}
}
add_wired_entry (0x02000017, 0x03c00017, 0xe0000000, PM_64K);
add_wired_entry (0x02400017, 0x02440017, 0xe2000000, PM_16M);
add_wired_entry (0x01800017, 0x01000017, 0xe4000000, PM_4M);
irq_setup = jazz_irq_setup;
fd_cacheflush = jazz_fd_cacheflush;
keyboard_setup = jazz_keyboard_setup;
feature = &jazz_feature; // Will go away
port_base = JAZZ_PORT_BASE;
isa_slot_offset = 0xe3000000;
request_region(0x00,0x20,"dma1");
request_region(0x40,0x20,"timer");
request_region(0x80,0x10,"dma page reg");
request_region(0xc0,0x20,"dma2");
board_time_init = jazz_time_init;
/* The RTC is outside the port address space */
_machine_restart = jazz_machine_restart;
_machine_halt = jazz_machine_halt;
_machine_power_off = jazz_machine_power_off;
}
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