projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 1da177e4 LT |
2 | /* |
| 3 | * linux/arch/arm/mach-footbridge/cats-hw.c | |
| 4 | * | |
| 5 | * CATS machine fixup | |
| 6 | * | |
| 7 | * Copyright (C) 1998, 1999 Russell King, Phil Blundell | |
| 8 | */ | |
| 9 | #include <linux/ioport.h> | |
| 10 | #include <linux/kernel.h> | |
| 11 | #include <linux/init.h> | |
| b1c495ff | 12 | #include <linux/screen_info.h> |
| fced80c7 | 13 | #include <linux/io.h> |
| 70d13e08 | 14 | #include <linux/spinlock.h> |
| 1da177e4 LT |
15 | |
| 16 | #include <asm/hardware/dec21285.h> | |
| 1da177e4 LT |
17 | #include <asm/mach-types.h> |
| 18 | #include <asm/setup.h> | |
| 19 | ||
| 20 | #include <asm/mach/arch.h> | |
| 21 | ||
| 22 | #include "common.h" | |
| 23 | ||
| 24 | #define CFG_PORT 0x370 | |
| 25 | #define INDEX_PORT (CFG_PORT) | |
| 26 | #define DATA_PORT (CFG_PORT + 1) | |
| 27 | ||
| 28 | static int __init cats_hw_init(void) | |
| 29 | { | |
| 30 | if (machine_is_cats()) { | |
| 31 | /* Set Aladdin to CONFIGURE mode */ | |
| 32 | outb(0x51, CFG_PORT); | |
| 33 | outb(0x23, CFG_PORT); | |
| 34 | ||
| 35 | /* Select logical device 3 */ | |
| 36 | outb(0x07, INDEX_PORT); | |
| 37 | outb(0x03, DATA_PORT); | |
| 38 | ||
| 39 | /* Set parallel port to DMA channel 3, ECP+EPP1.9, | |
| 40 | enable EPP timeout */ | |
| 41 | outb(0x74, INDEX_PORT); | |
| 42 | outb(0x03, DATA_PORT); | |
| 43 | ||
| 44 | outb(0xf0, INDEX_PORT); | |
| 45 | outb(0x0f, DATA_PORT); | |
| 46 | ||
| 47 | outb(0xf1, INDEX_PORT); | |
| 48 | outb(0x07, DATA_PORT); | |
| 49 | ||
| 50 | /* Select logical device 4 */ | |
| 51 | outb(0x07, INDEX_PORT); | |
| 52 | outb(0x04, DATA_PORT); | |
| 53 | ||
| 54 | /* UART1 high speed mode */ | |
| 55 | outb(0xf0, INDEX_PORT); | |
| 56 | outb(0x02, DATA_PORT); | |
| 57 | ||
| 58 | /* Select logical device 5 */ | |
| 59 | outb(0x07, INDEX_PORT); | |
| 60 | outb(0x05, DATA_PORT); | |
| 61 | ||
| 62 | /* UART2 high speed mode */ | |
| 63 | outb(0xf0, INDEX_PORT); | |
| 64 | outb(0x02, DATA_PORT); | |
| 65 | ||
| 66 | /* Set Aladdin to RUN mode */ | |
| 67 | outb(0xbb, CFG_PORT); | |
| 68 | } | |
| 69 | ||
| 70 | return 0; | |
| 71 | } | |
| 72 | ||
| 73 | __initcall(cats_hw_init); | |
| 74 | ||
| 75 | /* | |
| 76 | * CATS uses soft-reboot by default, since | |
| 77 | * hard reboots fail on early boards. | |
| 78 | */ | |
| 79 | static void __init | |
| 1c2f87c2 | 80 | fixup_cats(struct tag *tags, char **cmdline) |
| 1da177e4 | 81 | { |
| 617d1464 | 82 | #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE) |
| 3ea33510 PA |
83 | screen_info.orig_video_lines = 25; |
| 84 | screen_info.orig_video_points = 16; | |
| 85 | screen_info.orig_y = 24; | |
| 617d1464 | 86 | #endif |
| 1da177e4 LT |
87 | } |
| 88 | ||
| 89 | MACHINE_START(CATS, "Chalice-CATS") | |
| e9dea0c6 | 90 | /* Maintainer: Philip Blundell */ |
| 93ef8883 | 91 | .atag_offset = 0x100, |
| 16d6d5b0 | 92 | .reboot_mode = REBOOT_SOFT, |
| e9dea0c6 RK |
93 | .fixup = fixup_cats, |
| 94 | .map_io = footbridge_map_io, | |
| 95 | .init_irq = footbridge_init_irq, | |
| 6bb27d73 | 96 | .init_time = isa_timer_init, |
| 6fca1e17 | 97 | .restart = footbridge_restart, |
| 1da177e4 | 98 | MACHINE_END |