mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 04:03:58 +08:00
6fca1e17f6
Hook these platforms restart code into the new restart hook rather than using arch_reset(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
/*
|
|
* linux/arch/arm/mach-footbridge/cats-hw.c
|
|
*
|
|
* CATS machine fixup
|
|
*
|
|
* Copyright (C) 1998, 1999 Russell King, Phil Blundell
|
|
*/
|
|
#include <linux/ioport.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/screen_info.h>
|
|
#include <linux/io.h>
|
|
#include <linux/spinlock.h>
|
|
|
|
#include <asm/hardware/dec21285.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/setup.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
|
|
#include "common.h"
|
|
|
|
#define CFG_PORT 0x370
|
|
#define INDEX_PORT (CFG_PORT)
|
|
#define DATA_PORT (CFG_PORT + 1)
|
|
|
|
static int __init cats_hw_init(void)
|
|
{
|
|
if (machine_is_cats()) {
|
|
/* Set Aladdin to CONFIGURE mode */
|
|
outb(0x51, CFG_PORT);
|
|
outb(0x23, CFG_PORT);
|
|
|
|
/* Select logical device 3 */
|
|
outb(0x07, INDEX_PORT);
|
|
outb(0x03, DATA_PORT);
|
|
|
|
/* Set parallel port to DMA channel 3, ECP+EPP1.9,
|
|
enable EPP timeout */
|
|
outb(0x74, INDEX_PORT);
|
|
outb(0x03, DATA_PORT);
|
|
|
|
outb(0xf0, INDEX_PORT);
|
|
outb(0x0f, DATA_PORT);
|
|
|
|
outb(0xf1, INDEX_PORT);
|
|
outb(0x07, DATA_PORT);
|
|
|
|
/* Select logical device 4 */
|
|
outb(0x07, INDEX_PORT);
|
|
outb(0x04, DATA_PORT);
|
|
|
|
/* UART1 high speed mode */
|
|
outb(0xf0, INDEX_PORT);
|
|
outb(0x02, DATA_PORT);
|
|
|
|
/* Select logical device 5 */
|
|
outb(0x07, INDEX_PORT);
|
|
outb(0x05, DATA_PORT);
|
|
|
|
/* UART2 high speed mode */
|
|
outb(0xf0, INDEX_PORT);
|
|
outb(0x02, DATA_PORT);
|
|
|
|
/* Set Aladdin to RUN mode */
|
|
outb(0xbb, CFG_PORT);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
__initcall(cats_hw_init);
|
|
|
|
/*
|
|
* CATS uses soft-reboot by default, since
|
|
* hard reboots fail on early boards.
|
|
*/
|
|
static void __init
|
|
fixup_cats(struct tag *tags, char **cmdline, struct meminfo *mi)
|
|
{
|
|
screen_info.orig_video_lines = 25;
|
|
screen_info.orig_video_points = 16;
|
|
screen_info.orig_y = 24;
|
|
}
|
|
|
|
MACHINE_START(CATS, "Chalice-CATS")
|
|
/* Maintainer: Philip Blundell */
|
|
.atag_offset = 0x100,
|
|
.restart_mode = 's',
|
|
.fixup = fixup_cats,
|
|
.map_io = footbridge_map_io,
|
|
.init_irq = footbridge_init_irq,
|
|
.timer = &isa_timer,
|
|
.restart = footbridge_restart,
|
|
MACHINE_END
|