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fa6667fe GU |
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 | { | |
1419ea3b | 124 | writew(0x00ec, MCFSIM_PADDR); |
fa6667fe GU |
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 */ | |
1419ea3b | 131 | writew(0x1180, MCFSIM_CSCR3); |
fa6667fe GU |
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 | /***************************************************************************/ |