1 /***************************************************************************/
2
3 /*
4 * linux/arch/m68knommu/platform/520x/config.c
5 *
6 * Copyright (C) 2005, Freescale (www.freescale.com)
7 * Copyright (C) 2005, Intec Automation (mike@steroidmicros.com)
8 * Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com)
9 * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
10 */
11
12 /***************************************************************************/
13
14 #include <linux/kernel.h>
15 #include <linux/param.h>
16 #include <linux/init.h>
17 #include <linux/interrupt.h>
18 #include <linux/io.h>
19 #include <asm/machdep.h>
20 #include <asm/coldfire.h>
21 #include <asm/mcfsim.h>
22 #include <asm/mcfuart.h>
23
24 /***************************************************************************/
25
26 void coldfire_reset(void);
27
28 /***************************************************************************/
29
30 static struct mcf_platform_uart m520x_uart_platform[] = {
31 {
32 .mapbase = MCF_MBAR + MCFUART_BASE1,
33 .irq = MCFINT_VECBASE + MCFINT_UART0,
34 },
35 {
36 .mapbase = MCF_MBAR + MCFUART_BASE2,
37 .irq = MCFINT_VECBASE + MCFINT_UART1,
38 },
39 {
40 .mapbase = MCF_MBAR + MCFUART_BASE3,
41 .irq = MCFINT_VECBASE + MCFINT_UART2,
42 },
43 { },
44 };
45
46 static struct platform_device m520x_uart = {
47 .name = "mcfuart",
48 .id = 0,
49 .dev.platform_data = m520x_uart_platform,
50 };
51
52 static struct platform_device *m520x_devices[] __initdata = {
53 &m520x_uart,
54 };
55
56 /***************************************************************************/
57
58 #define INTC0 (MCF_MBAR + MCFICM_INTC0)
59
m520x_uart_init_line(int line,int irq)60 static void __init m520x_uart_init_line(int line, int irq)
61 {
62 u32 imr;
63 u16 par;
64 u8 par2;
65
66 writeb(0x03, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);
67
68 imr = readl(INTC0 + MCFINTC_IMRL);
69 imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
70 writel(imr, INTC0 + MCFINTC_IMRL);
71
72 switch (line) {
73 case 0:
74 par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
75 par |= MCF_GPIO_PAR_UART_PAR_UTXD0 |
76 MCF_GPIO_PAR_UART_PAR_URXD0;
77 writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
78 break;
79 case 1:
80 par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
81 par |= MCF_GPIO_PAR_UART_PAR_UTXD1 |
82 MCF_GPIO_PAR_UART_PAR_URXD1;
83 writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
84 break;
85 case 2:
86 par2 = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
87 par2 &= ~0x0F;
88 par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 |
89 MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
90 writeb(par2, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
91 break;
92 }
93 }
94
m520x_uarts_init(void)95 static void __init m520x_uarts_init(void)
96 {
97 const int nrlines = ARRAY_SIZE(m520x_uart_platform);
98 int line;
99
100 for (line = 0; (line < nrlines); line++)
101 m520x_uart_init_line(line, m520x_uart_platform[line].irq);
102 }
103
104 /***************************************************************************/
105
106 /*
107 * Program the vector to be an auto-vectored.
108 */
109
mcf_autovector(unsigned int vec)110 void mcf_autovector(unsigned int vec)
111 {
112 /* Everything is auto-vectored on the 520x devices */
113 }
114
115 /***************************************************************************/
116
config_BSP(char * commandp,int size)117 void __init config_BSP(char *commandp, int size)
118 {
119 mach_reset = coldfire_reset;
120 m520x_uarts_init();
121 }
122
123 /***************************************************************************/
124
init_BSP(void)125 static int __init init_BSP(void)
126 {
127 platform_add_devices(m520x_devices, ARRAY_SIZE(m520x_devices));
128 return 0;
129 }
130
131 arch_initcall(init_BSP);
132
133 /***************************************************************************/
134