1 /***************************************************************************/
2
3 /*
4 * linux/arch/m68knommu/platform/5206/config.c
5 *
6 * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
7 * Copyright (C) 2000-2001, Lineo Inc. (www.lineo.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 /***************************************************************************/
27
28 static struct mcf_platform_uart m5206_uart_platform[] = {
29 {
30 .mapbase = MCF_MBAR + MCFUART_BASE1,
31 .irq = 73,
32 },
33 {
34 .mapbase = MCF_MBAR + MCFUART_BASE2,
35 .irq = 74,
36 },
37 { },
38 };
39
40 static struct platform_device m5206_uart = {
41 .name = "mcfuart",
42 .id = 0,
43 .dev.platform_data = m5206_uart_platform,
44 };
45
46 static struct platform_device *m5206_devices[] __initdata = {
47 &m5206_uart,
48 };
49
50 /***************************************************************************/
51
m5206_uart_init_line(int line,int irq)52 static void __init m5206_uart_init_line(int line, int irq)
53 {
54 if (line == 0) {
55 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
56 writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
57 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
58 } else if (line == 1) {
59 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
60 writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
61 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
62 }
63 }
64
m5206_uarts_init(void)65 static void __init m5206_uarts_init(void)
66 {
67 const int nrlines = ARRAY_SIZE(m5206_uart_platform);
68 int line;
69
70 for (line = 0; (line < nrlines); line++)
71 m5206_uart_init_line(line, m5206_uart_platform[line].irq);
72 }
73
74 /***************************************************************************/
75
mcf_autovector(unsigned int vec)76 void mcf_autovector(unsigned int vec)
77 {
78 volatile unsigned char *mbar;
79 unsigned char icr;
80
81 if ((vec >= 25) && (vec <= 31)) {
82 vec -= 25;
83 mbar = (volatile unsigned char *) MCF_MBAR;
84 icr = MCFSIM_ICR_AUTOVEC | (vec << 3);
85 *(mbar + MCFSIM_ICR1 + vec) = icr;
86 vec = 0x1 << (vec + 1);
87 mcf_setimr(mcf_getimr() & ~vec);
88 }
89 }
90
91 /***************************************************************************/
92
mcf_settimericr(unsigned int timer,unsigned int level)93 void mcf_settimericr(unsigned int timer, unsigned int level)
94 {
95 volatile unsigned char *icrp;
96 unsigned int icr, imr;
97
98 if (timer <= 2) {
99 switch (timer) {
100 case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
101 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
102 }
103
104 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
105 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
106 mcf_setimr(mcf_getimr() & ~imr);
107 }
108 }
109
110 /***************************************************************************/
111
config_BSP(char * commandp,int size)112 void __init config_BSP(char *commandp, int size)
113 {
114 mcf_setimr(MCFSIM_IMR_MASKALL);
115 mach_reset = coldfire_reset;
116 }
117
118 /***************************************************************************/
119
init_BSP(void)120 static int __init init_BSP(void)
121 {
122 m5206_uarts_init();
123 platform_add_devices(m5206_devices, ARRAY_SIZE(m5206_devices));
124 return 0;
125 }
126
127 arch_initcall(init_BSP);
128
129 /***************************************************************************/
130