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/io.h>
16 #include <linux/phy.h>
17 #include <linux/phy_fixed.h>
18 #include <asm/machdep.h>
19 #include <asm/coldfire.h>
20 #include <asm/mcfsim.h>
21 #include <asm/mcfuart.h>
22
23 /***************************************************************************/
24
25 /*
26 * Some platforms need software versions of the GPIO data registers.
27 */
28 unsigned short ppdata;
29 unsigned char ledbank = 0xff;
30
31 /***************************************************************************/
32
33 static struct mcf_platform_uart m5272_uart_platform[] = {
34 {
35 .mapbase = MCF_MBAR + MCFUART_BASE1,
36 .irq = MCF_IRQ_UART1,
37 },
38 {
39 .mapbase = MCF_MBAR + MCFUART_BASE2,
40 .irq = MCF_IRQ_UART2,
41 },
42 { },
43 };
44
45 static struct platform_device m5272_uart = {
46 .name = "mcfuart",
47 .id = 0,
48 .dev.platform_data = m5272_uart_platform,
49 };
50
51 static struct resource m5272_fec_resources[] = {
52 {
53 .start = MCF_MBAR + 0x840,
54 .end = MCF_MBAR + 0x840 + 0x1cf,
55 .flags = IORESOURCE_MEM,
56 },
57 {
58 .start = MCF_IRQ_ERX,
59 .end = MCF_IRQ_ERX,
60 .flags = IORESOURCE_IRQ,
61 },
62 {
63 .start = MCF_IRQ_ETX,
64 .end = MCF_IRQ_ETX,
65 .flags = IORESOURCE_IRQ,
66 },
67 {
68 .start = MCF_IRQ_ENTC,
69 .end = MCF_IRQ_ENTC,
70 .flags = IORESOURCE_IRQ,
71 },
72 };
73
74 static struct platform_device m5272_fec = {
75 .name = "fec",
76 .id = 0,
77 .num_resources = ARRAY_SIZE(m5272_fec_resources),
78 .resource = m5272_fec_resources,
79 };
80
81 static struct platform_device *m5272_devices[] __initdata = {
82 &m5272_uart,
83 &m5272_fec,
84 };
85
86 /***************************************************************************/
87
m5272_uart_init_line(int line,int irq)88 static void __init m5272_uart_init_line(int line, int irq)
89 {
90 u32 v;
91
92 if ((line >= 0) && (line < 2)) {
93 /* Enable the output lines for the serial ports */
94 v = readl(MCF_MBAR + MCFSIM_PBCNT);
95 v = (v & ~0x000000ff) | 0x00000055;
96 writel(v, MCF_MBAR + MCFSIM_PBCNT);
97
98 v = readl(MCF_MBAR + MCFSIM_PDCNT);
99 v = (v & ~0x000003fc) | 0x000002a8;
100 writel(v, MCF_MBAR + MCFSIM_PDCNT);
101 }
102 }
103
m5272_uarts_init(void)104 static void __init m5272_uarts_init(void)
105 {
106 const int nrlines = ARRAY_SIZE(m5272_uart_platform);
107 int line;
108
109 for (line = 0; (line < nrlines); line++)
110 m5272_uart_init_line(line, m5272_uart_platform[line].irq);
111 }
112
113 /***************************************************************************/
114
m5272_cpu_reset(void)115 static void m5272_cpu_reset(void)
116 {
117 local_irq_disable();
118 /* Set watchdog to reset, and enabled */
119 __raw_writew(0, MCF_MBAR + MCFSIM_WIRR);
120 __raw_writew(1, MCF_MBAR + MCFSIM_WRRR);
121 __raw_writew(0, MCF_MBAR + MCFSIM_WCR);
122 for (;;)
123 /* wait for watchdog to timeout */;
124 }
125
126 /***************************************************************************/
127
config_BSP(char * commandp,int size)128 void __init config_BSP(char *commandp, int size)
129 {
130 #if defined (CONFIG_MOD5272)
131 volatile unsigned char *pivrp;
132
133 /* Set base of device vectors to be 64 */
134 pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
135 *pivrp = 0x40;
136 #endif
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 mach_reset = m5272_cpu_reset;
149 }
150
151 /***************************************************************************/
152
153 /*
154 * Some 5272 based boards have the FEC ethernet diectly connected to
155 * an ethernet switch. In this case we need to use the fixed phy type,
156 * and we need to declare it early in boot.
157 */
158 static struct fixed_phy_status nettel_fixed_phy_status __initdata = {
159 .link = 1,
160 .speed = 100,
161 .duplex = 0,
162 };
163
164 /***************************************************************************/
165
init_BSP(void)166 static int __init init_BSP(void)
167 {
168 m5272_uarts_init();
169 fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status);
170 platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices));
171 return 0;
172 }
173
174 arch_initcall(init_BSP);
175
176 /***************************************************************************/
177