projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | /***************************************************************************/ |