1// SPDX-License-Identifier: GPL-2.0
 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>
12#include <linux/screen_info.h>
13#include <linux/io.h>
14#include <linux/spinlock.h>
15
16#include <asm/hardware/dec21285.h>
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
28static 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 */
79static void __init
80fixup_cats(struct tag *tags, char **cmdline)
81{
82#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
83	screen_info.orig_video_lines  = 25;
84	screen_info.orig_video_points = 16;
85	screen_info.orig_y = 24;
86#endif
87}
88
89MACHINE_START(CATS, "Chalice-CATS")
90	/* Maintainer: Philip Blundell */
91	.atag_offset	= 0x100,
92	.reboot_mode	= REBOOT_SOFT,
93	.fixup		= fixup_cats,
94	.map_io		= footbridge_map_io,
95	.init_irq	= footbridge_init_irq,
96	.init_time	= isa_timer_init,
97	.restart	= footbridge_restart,
98MACHINE_END

 1// SPDX-License-Identifier: GPL-2.0
 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>
12#include <linux/screen_info.h>
13#include <linux/io.h>
14#include <linux/spinlock.h>
15
16#include <asm/hardware/dec21285.h>
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
28static 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 */
79static void __init
80fixup_cats(struct tag *tags, char **cmdline)
81{
82#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
83	screen_info.orig_video_lines  = 25;
84	screen_info.orig_video_points = 16;
85	screen_info.orig_y = 24;
86#endif
87}
88
89MACHINE_START(CATS, "Chalice-CATS")
90	/* Maintainer: Philip Blundell */
91	.atag_offset	= 0x100,
92	.reboot_mode	= REBOOT_SOFT,
93	.fixup		= fixup_cats,
94	.map_io		= footbridge_map_io,
95	.init_irq	= footbridge_init_irq,
96	.init_time	= isa_timer_init,
97	.restart	= footbridge_restart,
98MACHINE_END