1 /***************************************************************************/
2
3 /*
4 * linux/arch/m68knommu/platform/5249/config.c
5 *
6 * Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com)
7 */
8
9 /***************************************************************************/
10
11 #include <linux/kernel.h>
12 #include <linux/param.h>
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <linux/io.h>
16 #include <asm/machdep.h>
17 #include <asm/coldfire.h>
18 #include <asm/mcfsim.h>
19 #include <asm/mcfuart.h>
20
21 /***************************************************************************/
22
23 void coldfire_reset(void);
24
25 /***************************************************************************/
26
27 static struct mcf_platform_uart m5249_uart_platform[] = {
28 {
29 .mapbase = MCF_MBAR + MCFUART_BASE1,
30 .irq = 73,
31 },
32 {
33 .mapbase = MCF_MBAR + MCFUART_BASE2,
34 .irq = 74,
35 }
36 };
37
38 static struct platform_device m5249_uart = {
39 .name = "mcfuart",
40 .id = 0,
41 .dev.platform_data = m5249_uart_platform,
42 };
43
44 static struct platform_device *m5249_devices[] __initdata = {
45 &m5249_uart,
46 };
47
48 /***************************************************************************/
49
m5249_uart_init_line(int line,int irq)50 static void __init m5249_uart_init_line(int line, int irq)
51 {
52 if (line == 0) {
53 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
54 writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
55 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
56 } else if (line == 1) {
57 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
58 writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
59 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
60 }
61 }
62
m5249_uarts_init(void)63 static void __init m5249_uarts_init(void)
64 {
65 const int nrlines = ARRAY_SIZE(m5249_uart_platform);
66 int line;
67
68 for (line = 0; (line < nrlines); line++)
69 m5249_uart_init_line(line, m5249_uart_platform[line].irq);
70 }
71
72
73 /***************************************************************************/
74
mcf_autovector(unsigned int vec)75 void mcf_autovector(unsigned int vec)
76 {
77 volatile unsigned char *mbar;
78
79 if ((vec >= 25) && (vec <= 31)) {
80 mbar = (volatile unsigned char *) MCF_MBAR;
81 vec = 0x1 << (vec - 24);
82 *(mbar + MCFSIM_AVR) |= vec;
83 mcf_setimr(mcf_getimr() & ~vec);
84 }
85 }
86
87 /***************************************************************************/
88
mcf_settimericr(unsigned int timer,unsigned int level)89 void mcf_settimericr(unsigned int timer, unsigned int level)
90 {
91 volatile unsigned char *icrp;
92 unsigned int icr, imr;
93
94 if (timer <= 2) {
95 switch (timer) {
96 case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
97 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
98 }
99
100 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
101 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
102 mcf_setimr(mcf_getimr() & ~imr);
103 }
104 }
105
106 /***************************************************************************/
107
config_BSP(char * commandp,int size)108 void __init config_BSP(char *commandp, int size)
109 {
110 mcf_setimr(MCFSIM_IMR_MASKALL);
111 mach_reset = coldfire_reset;
112 }
113
114 /***************************************************************************/
115
init_BSP(void)116 static int __init init_BSP(void)
117 {
118 m5249_uarts_init();
119 platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices));
120 return 0;
121 }
122
123 arch_initcall(init_BSP);
124
125 /***************************************************************************/
126