1 /***************************************************************************/
2
3 /*
4 * linux/arch/m68knommu/platform/5272/config.c
5 *
6 * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
7 * Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com)
8 */
9
10 /***************************************************************************/
11
12 #include <linux/kernel.h>
13 #include <linux/param.h>
14 #include <linux/init.h>
15 #include <linux/interrupt.h>
16 #include <linux/io.h>
17 #include <asm/machdep.h>
18 #include <asm/coldfire.h>
19 #include <asm/mcfsim.h>
20 #include <asm/mcfuart.h>
21
22 /***************************************************************************/
23
24 void coldfire_reset(void);
25
26 extern unsigned int mcf_timervector;
27 extern unsigned int mcf_profilevector;
28 extern unsigned int mcf_timerlevel;
29
30 /***************************************************************************/
31
32 /*
33 * Some platforms need software versions of the GPIO data registers.
34 */
35 unsigned short ppdata;
36 unsigned char ledbank = 0xff;
37
38 /***************************************************************************/
39
40 static struct mcf_platform_uart m5272_uart_platform[] = {
41 {
42 .mapbase = MCF_MBAR + MCFUART_BASE1,
43 .irq = 73,
44 },
45 {
46 .mapbase = MCF_MBAR + MCFUART_BASE2,
47 .irq = 74,
48 },
49 { },
50 };
51
52 static struct platform_device m5272_uart = {
53 .name = "mcfuart",
54 .id = 0,
55 .dev.platform_data = m5272_uart_platform,
56 };
57
58 static struct platform_device *m5272_devices[] __initdata = {
59 &m5272_uart,
60 };
61
62 /***************************************************************************/
63
m5272_uart_init_line(int line,int irq)64 static void __init m5272_uart_init_line(int line, int irq)
65 {
66 u32 v;
67
68 if ((line >= 0) && (line < 2)) {
69 v = (line) ? 0x0e000000 : 0xe0000000;
70 writel(v, MCF_MBAR + MCFSIM_ICR2);
71
72 /* Enable the output lines for the serial ports */
73 v = readl(MCF_MBAR + MCFSIM_PBCNT);
74 v = (v & ~0x000000ff) | 0x00000055;
75 writel(v, MCF_MBAR + MCFSIM_PBCNT);
76
77 v = readl(MCF_MBAR + MCFSIM_PDCNT);
78 v = (v & ~0x000003fc) | 0x000002a8;
79 writel(v, MCF_MBAR + MCFSIM_PDCNT);
80 }
81 }
82
m5272_uarts_init(void)83 static void __init m5272_uarts_init(void)
84 {
85 const int nrlines = ARRAY_SIZE(m5272_uart_platform);
86 int line;
87
88 for (line = 0; (line < nrlines); line++)
89 m5272_uart_init_line(line, m5272_uart_platform[line].irq);
90 }
91
92 /***************************************************************************/
93
mcf_disableall(void)94 void mcf_disableall(void)
95 {
96 volatile unsigned long *icrp;
97
98 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
99 icrp[0] = 0x88888888;
100 icrp[1] = 0x88888888;
101 icrp[2] = 0x88888888;
102 icrp[3] = 0x88888888;
103 }
104
105 /***************************************************************************/
106
mcf_autovector(unsigned int vec)107 void mcf_autovector(unsigned int vec)
108 {
109 /* Everything is auto-vectored on the 5272 */
110 }
111
112 /***************************************************************************/
113
mcf_settimericr(int timer,int level)114 void mcf_settimericr(int timer, int level)
115 {
116 volatile unsigned long *icrp;
117
118 if ((timer >= 1 ) && (timer <= 4)) {
119 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
120 *icrp = (0x8 | level) << ((4 - timer) * 4);
121 }
122 }
123
124 /***************************************************************************/
125
config_BSP(char * commandp,int size)126 void __init config_BSP(char *commandp, int size)
127 {
128 #if defined (CONFIG_MOD5272)
129 volatile unsigned char *pivrp;
130
131 /* Set base of device vectors to be 64 */
132 pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
133 *pivrp = 0x40;
134 #endif
135
136 mcf_disableall();
137
138 #if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
139 /* Copy command line from FLASH to local buffer... */
140 memcpy(commandp, (char *) 0xf0004000, size);
141 commandp[size-1] = 0;
142 #elif defined(CONFIG_CANCam)
143 /* Copy command line from FLASH to local buffer... */
144 memcpy(commandp, (char *) 0xf0010000, size);
145 commandp[size-1] = 0;
146 #endif
147
148 mcf_timervector = 69;
149 mcf_profilevector = 70;
150 mach_reset = coldfire_reset;
151 }
152
153 /***************************************************************************/
154
init_BSP(void)155 static int __init init_BSP(void)
156 {
157 m5272_uarts_init();
158 platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices));
159 return 0;
160 }
161
162 arch_initcall(init_BSP);
163
164 /***************************************************************************/
165