m68knommu: move the 528x platform code into the common ColdFire code directory
[muen/linux.git] / arch / m68k / platform / 5307 / nettel.c
1 /***************************************************************************/
2
3 /*
4  *      nettel.c -- startup code support for the NETtel boards
5  *
6  *      Copyright (C) 2009, 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/io.h>
15 #include <linux/platform_device.h>
16 #include <asm/coldfire.h>
17 #include <asm/mcfsim.h>
18 #include <asm/nettel.h>
19
20 /***************************************************************************/
21
22 /*
23  * Define the IO and interrupt resources of the 2 SMC9196 interfaces.
24  */
25 #define NETTEL_SMC0_ADDR        0x30600300
26 #define NETTEL_SMC0_IRQ         29
27
28 #define NETTEL_SMC1_ADDR        0x30600000
29 #define NETTEL_SMC1_IRQ         27
30
31 /*
32  * We need some access into the SMC9196 registers. Define those registers
33  * we will need here (including the smc91x.h doesn't seem to give us these
34  * in a simple form).
35  */
36 #define SMC91xx_BANKSELECT      14
37 #define SMC91xx_BASEADDR        2
38 #define SMC91xx_BASEMAC         4
39
40 /***************************************************************************/
41
42 static struct resource nettel_smc91x_0_resources[] = {
43         {
44                 .start          = NETTEL_SMC0_ADDR,
45                 .end            = NETTEL_SMC0_ADDR + 0x20,
46                 .flags          = IORESOURCE_MEM,
47         },
48         {
49                 .start          = NETTEL_SMC0_IRQ,
50                 .end            = NETTEL_SMC0_IRQ,
51                 .flags          = IORESOURCE_IRQ,
52         },
53 };
54
55 static struct resource nettel_smc91x_1_resources[] = {
56         {
57                 .start          = NETTEL_SMC1_ADDR,
58                 .end            = NETTEL_SMC1_ADDR + 0x20,
59                 .flags          = IORESOURCE_MEM,
60         },
61         {
62                 .start          = NETTEL_SMC1_IRQ,
63                 .end            = NETTEL_SMC1_IRQ,
64                 .flags          = IORESOURCE_IRQ,
65         },
66 };
67
68 static struct platform_device nettel_smc91x[] = {
69         {
70                 .name                   = "smc91x",
71                 .id                     = 0,
72                 .num_resources          = ARRAY_SIZE(nettel_smc91x_0_resources),
73                 .resource               = nettel_smc91x_0_resources,
74         },
75         {
76                 .name                   = "smc91x",
77                 .id                     = 1,
78                 .num_resources          = ARRAY_SIZE(nettel_smc91x_1_resources),
79                 .resource               = nettel_smc91x_1_resources,
80         },
81 };
82
83 static struct platform_device *nettel_devices[] __initdata = {
84         &nettel_smc91x[0],
85         &nettel_smc91x[1],
86 };
87
88 /***************************************************************************/
89
90 static u8 nettel_macdefault[] __initdata = {
91         0x00, 0xd0, 0xcf, 0x00, 0x00, 0x01,
92 };
93
94 /*
95  * Set flash contained MAC address into SMC9196 core. Make sure the flash
96  * MAC address is sane, and not an empty flash. If no good use the Moreton
97  * Bay default MAC address instead.
98  */
99
100 static void __init nettel_smc91x_setmac(unsigned int ioaddr, unsigned int flashaddr)
101 {
102         u16 *macp;
103
104         macp = (u16 *) flashaddr;
105         if ((macp[0] == 0xffff) && (macp[1] == 0xffff) && (macp[2] == 0xffff))
106                 macp = (u16 *) &nettel_macdefault[0];
107
108         writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT);
109         writew(macp[0], ioaddr + SMC91xx_BASEMAC);
110         writew(macp[1], ioaddr + SMC91xx_BASEMAC + 2);
111         writew(macp[2], ioaddr + SMC91xx_BASEMAC + 4);
112 }
113
114 /***************************************************************************/
115
116 /*
117  * Re-map the address space of at least one of the SMC ethernet
118  * parts. Both parts power up decoding the same address, so we
119  * need to move one of them first, before doing anything else.
120  */
121
122 static void __init nettel_smc91x_init(void)
123 {
124         writew(0x00ec, MCF_MBAR + MCFSIM_PADDR);
125         mcf_setppdata(0, 0x0080);
126         writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT);
127         writew(0x0067, NETTEL_SMC0_ADDR + SMC91xx_BASEADDR);
128         mcf_setppdata(0x0080, 0);
129
130         /* Set correct chip select timing for SMC9196 accesses */
131         writew(0x1180, MCF_MBAR + MCFSIM_CSCR3);
132
133         /* Set the SMC interrupts to be auto-vectored */
134         mcf_autovector(NETTEL_SMC0_IRQ);
135         mcf_autovector(NETTEL_SMC1_IRQ);
136
137         /* Set MAC addresses from flash for both interfaces */
138         nettel_smc91x_setmac(NETTEL_SMC0_ADDR, 0xf0006000);
139         nettel_smc91x_setmac(NETTEL_SMC1_ADDR, 0xf0006006);
140 }
141
142 /***************************************************************************/
143
144 static int __init init_nettel(void)
145 {
146         nettel_smc91x_init();
147         platform_add_devices(nettel_devices, ARRAY_SIZE(nettel_devices));
148         return 0;
149 }
150
151 arch_initcall(init_nettel);
152
153 /***************************************************************************/