1 /***************************************************************************/
2
3 /*
4 * linux/arch/m68knommu/platform/68VZ328/config.c
5 *
6 * Copyright (C) 1993 Hamish Macdonald
7 * Copyright (C) 1999 D. Jeff Dionne
8 * Copyright (C) 2001 Georges Menie, Ken Desmet
9 *
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file COPYING in the main directory of this archive
12 * for more details.
13 */
14
15 /***************************************************************************/
16
17 #include <linux/types.h>
18 #include <linux/kernel.h>
19 #include <linux/kd.h>
20 #include <linux/netdevice.h>
21 #include <linux/interrupt.h>
22 #include <linux/irq.h>
23
24 #include <asm/system.h>
25 #include <asm/pgtable.h>
26 #include <asm/machdep.h>
27 #include <asm/MC68VZ328.h>
28 #include <asm/bootstd.h>
29
30 #ifdef CONFIG_INIT_LCD
31 #include "bootlogo.h"
32 #endif
33
34 /***************************************************************************/
35
36 void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec);
37
38 /***************************************************************************/
39 /* Init Drangon Engine hardware */
40 /***************************************************************************/
41 #if defined(CONFIG_DRAGEN2)
42
m68vz328_reset(void)43 static void m68vz328_reset(void)
44 {
45 local_irq_disable();
46
47 #ifdef CONFIG_INIT_LCD
48 PBDATA |= 0x20; /* disable CCFL light */
49 PKDATA |= 0x4; /* disable LCD controller */
50 LCKCON = 0;
51 #endif
52
53 __asm__ __volatile__(
54 "reset\n\t"
55 "moveal #0x04000000, %a0\n\t"
56 "moveal 0(%a0), %sp\n\t"
57 "moveal 4(%a0), %a0\n\t"
58 "jmp (%a0)"
59 );
60 }
61
init_hardware(char * command,int size)62 static void init_hardware(char *command, int size)
63 {
64 #ifdef CONFIG_DIRECT_IO_ACCESS
65 SCR = 0x10; /* allow user access to internal registers */
66 #endif
67
68 /* CSGB Init */
69 CSGBB = 0x4000;
70 CSB = 0x1a1;
71
72 /* CS8900 init */
73 /* PK3: hardware sleep function pin, active low */
74 PKSEL |= PK(3); /* select pin as I/O */
75 PKDIR |= PK(3); /* select pin as output */
76 PKDATA |= PK(3); /* set pin high */
77
78 /* PF5: hardware reset function pin, active high */
79 PFSEL |= PF(5); /* select pin as I/O */
80 PFDIR |= PF(5); /* select pin as output */
81 PFDATA &= ~PF(5); /* set pin low */
82
83 /* cs8900 hardware reset */
84 PFDATA |= PF(5);
85 { int i; for (i = 0; i < 32000; ++i); }
86 PFDATA &= ~PF(5);
87
88 /* INT1 enable (cs8900 IRQ) */
89 PDPOL &= ~PD(1); /* active high signal */
90 PDIQEG &= ~PD(1);
91 PDIRQEN |= PD(1); /* IRQ enabled */
92
93 #ifdef CONFIG_INIT_LCD
94 /* initialize LCD controller */
95 LSSA = (long) screen_bits;
96 LVPW = 0x14;
97 LXMAX = 0x140;
98 LYMAX = 0xef;
99 LRRA = 0;
100 LPXCD = 3;
101 LPICF = 0x08;
102 LPOLCF = 0;
103 LCKCON = 0x80;
104 PCPDEN = 0xff;
105 PCSEL = 0;
106
107 /* Enable LCD controller */
108 PKDIR |= 0x4;
109 PKSEL |= 0x4;
110 PKDATA &= ~0x4;
111
112 /* Enable CCFL backlighting circuit */
113 PBDIR |= 0x20;
114 PBSEL |= 0x20;
115 PBDATA &= ~0x20;
116
117 /* contrast control register */
118 PFDIR |= 0x1;
119 PFSEL &= ~0x1;
120 PWMR = 0x037F;
121 #endif
122 }
123
124 /***************************************************************************/
125 /* Init RT-Control uCdimm hardware */
126 /***************************************************************************/
127 #elif defined(CONFIG_UCDIMM)
128
m68vz328_reset(void)129 static void m68vz328_reset(void)
130 {
131 local_irq_disable();
132 asm volatile (
133 "moveal #0x10c00000, %a0;\n\t"
134 "moveb #0, 0xFFFFF300;\n\t"
135 "moveal 0(%a0), %sp;\n\t"
136 "moveal 4(%a0), %a0;\n\t"
137 "jmp (%a0);\n"
138 );
139 }
140
141 unsigned char *cs8900a_hwaddr;
142 static int errno;
143
_bsc0(char *,getserialnum)144 _bsc0(char *, getserialnum)
145 _bsc1(unsigned char *, gethwaddr, int, a)
146 _bsc1(char *, getbenv, char *, a)
147
148 static void init_hardware(char *command, int size)
149 {
150 char *p;
151
152 printk(KERN_INFO "uCdimm serial string [%s]\n", getserialnum());
153 p = cs8900a_hwaddr = gethwaddr(0);
154 printk(KERN_INFO "uCdimm hwaddr %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
155 p[0], p[1], p[2], p[3], p[4], p[5]);
156 p = getbenv("APPEND");
157 if (p)
158 strcpy(p, command);
159 else
160 command[0] = 0;
161 }
162
163 /***************************************************************************/
164 #else
165
m68vz328_reset(void)166 static void m68vz328_reset(void)
167 {
168 }
169
init_hardware(char * command,int size)170 static void init_hardware(char *command, int size)
171 {
172 }
173
174 /***************************************************************************/
175 #endif
176 /***************************************************************************/
177
config_BSP(char * command,int size)178 void config_BSP(char *command, int size)
179 {
180 printk(KERN_INFO "68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
181
182 init_hardware(command, size);
183
184 mach_gettod = m68328_timer_gettod;
185 mach_reset = m68vz328_reset;
186 }
187
188 /***************************************************************************/
189