summaryrefslogtreecommitdiffstats
path: root/arch/m68knommu/platform/68VZ328/config.c
blob: 8abe0f6e7235b8e9984adca29f5d90ada099dde8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
/***************************************************************************/

/*
 *  linux/arch/m68knommu/platform/68VZ328/config.c
 *
 *  Copyright (C) 1993 Hamish Macdonald
 *  Copyright (C) 1999 D. Jeff Dionne
 *  Copyright (C) 2001 Georges Menie, Ken Desmet
 *
 * 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.
 */

/***************************************************************************/

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/console.h>
#include <linux/kd.h>
#include <linux/netdevice.h>
#include <linux/interrupt.h>

#include <asm/setup.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/machdep.h>
#include <asm/MC68VZ328.h>
#include <asm/bootstd.h>

#ifdef CONFIG_INIT_LCD
#include "bootlogo.h"
#endif

/***************************************************************************/

void m68328_timer_init(irq_handler_t timer_routine);
void m68328_timer_tick(void);
unsigned long m68328_timer_gettimeoffset(void);
void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec);

/***************************************************************************/
/*                        Init Drangon Engine hardware                     */
/***************************************************************************/
#if defined(CONFIG_DRAGEN2)

static void m68vz328_reset(void)
{
	local_irq_disable();

#ifdef CONFIG_INIT_LCD
	PBDATA |= 0x20;				/* disable CCFL light */
	PKDATA |= 0x4;				/* disable LCD controller */
	LCKCON = 0;
#endif

	__asm__ __volatile__(
		"reset\n\t"
		"moveal #0x04000000, %a0\n\t"
		"moveal 0(%a0), %sp\n\t"
		"moveal 4(%a0), %a0\n\t"
		"jmp (%a0)"
	);
}

static void init_hardware(char *command, int size)
{
#ifdef CONFIG_DIRECT_IO_ACCESS
	SCR = 0x10;					/* allow user access to internal registers */
#endif

	/* CSGB Init */
	CSGBB = 0x4000;
	CSB = 0x1a1;

	/* CS8900 init */
	/* PK3: hardware sleep function pin, active low */
	PKSEL |= PK(3);				/* select pin as I/O */
	PKDIR |= PK(3);				/* select pin as output */
	PKDATA |= PK(3);			/* set pin high */

	/* PF5: hardware reset function pin, active high */
	PFSEL |= PF(5);				/* select pin as I/O */
	PFDIR |= PF(5);				/* select pin as output */
	PFDATA &= ~PF(5);			/* set pin low */

	/* cs8900 hardware reset */
	PFDATA |= PF(5);
	{ int i; for (i = 0; i < 32000; ++i); }
	PFDATA &= ~PF(5);

	/* INT1 enable (cs8900 IRQ) */
	PDPOL &= ~PD(1);			/* active high signal */
	PDIQEG &= ~PD(1);
	PDIRQEN |= PD(1);			/* IRQ enabled */

#ifdef CONFIG_68328_SERIAL_UART2
	/* Enable RXD TXD port bits to enable UART2 */
	PJSEL &= ~(PJ(5) | PJ(4));
#endif

#ifdef CONFIG_INIT_LCD
	/* initialize LCD controller */
	LSSA = (long) screen_bits;
	LVPW = 0x14;
	LXMAX = 0x140;
	LYMAX = 0xef;
	LRRA = 0;
	LPXCD = 3;
	LPICF = 0x08;
	LPOLCF = 0;
	LCKCON = 0x80;
	PCPDEN = 0xff;
	PCSEL = 0;

	/* Enable LCD controller */
	PKDIR |= 0x4;
	PKSEL |= 0x4;
	PKDATA &= ~0x4;

	/* Enable CCFL backlighting circuit */
	PBDIR |= 0x20;
	PBSEL |= 0x20;
	PBDATA &= ~0x20;

	/* contrast control register */
	PFDIR |= 0x1;
	PFSEL &= ~0x1;
	PWMR = 0x037F;
#endif
}

/***************************************************************************/
/*                      Init RT-Control uCdimm hardware                    */
/***************************************************************************/
#elif defined(CONFIG_UCDIMM)

static void m68vz328_reset(void)
{
	local_irq_disable();
	asm volatile (
		"moveal #0x10c00000, %a0;\n\t"
		"moveb #0, 0xFFFFF300;\n\t"
		"moveal 0(%a0), %sp;\n\t"
		"moveal 4(%a0), %a0;\n\t"
		"jmp (%a0);\n"
	);
}

unsigned char *cs8900a_hwaddr;
static int errno;

_bsc0(char *, getserialnum)
_bsc1(unsigned char *, gethwaddr, int, a)
_bsc1(char *, getbenv, char *, a)

static void init_hardware(char *command, int size)
{
	char *p;

	printk(KERN_INFO "uCdimm serial string [%s]\n", getserialnum());
	p = cs8900a_hwaddr = gethwaddr(0);
	printk(KERN_INFO "uCdimm hwaddr %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
		p[0], p[1], p[2], p[3], p[4], p[5]);
	p = getbenv("APPEND");
	if (p)
		strcpy(p, command);
	else
		command[0] = 0;
}

/***************************************************************************/
#else

static void m68vz328_reset(void)
{
}

static void init_hardware(char *command, int size)
{
}

/***************************************************************************/
#endif
/***************************************************************************/

void config_BSP(char *command, int size)
{
	printk(KERN_INFO "68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");

#if defined(CONFIG_BOOTPARAM)
	strncpy(command, CONFIG_BOOTPARAM_STRING, size);
	command[size-1] = 0;
#else
	memset(command, 0, size);
#endif

	init_hardware(command, size);

	mach_sched_init = (void *) m68328_timer_init;
	mach_tick = m68328_timer_tick;
	mach_gettimeoffset = m68328_timer_gettimeoffset;
	mach_gettod = m68328_timer_gettod;
	mach_reset = m68vz328_reset;
}

/***************************************************************************/