| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * 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) |
| { |
| #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE) |
| screen_info.orig_video_lines = 25; |
| screen_info.orig_video_points = 16; |
| screen_info.orig_y = 24; |
| #endif |
| } |
| |
| MACHINE_START(CATS, "Chalice-CATS") |
| /* Maintainer: Philip Blundell */ |
| .atag_offset = 0x100, |
| .reboot_mode = REBOOT_SOFT, |
| .fixup = fixup_cats, |
| .map_io = footbridge_map_io, |
| .init_irq = footbridge_init_irq, |
| .init_time = isa_timer_init, |
| .restart = footbridge_restart, |
| MACHINE_END |