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Greg Ungerer
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May 24, 2010
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/***************************************************************************/ | ||
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/* | ||
* nettel.c -- startup code support for the NETtel boards | ||
* | ||
* Copyright (C) 2009, Greg Ungerer (gerg@snapgear.com) | ||
*/ | ||
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/***************************************************************************/ | ||
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#include <linux/kernel.h> | ||
#include <linux/param.h> | ||
#include <linux/init.h> | ||
#include <linux/io.h> | ||
#include <linux/platform_device.h> | ||
#include <asm/coldfire.h> | ||
#include <asm/mcfsim.h> | ||
#include <asm/nettel.h> | ||
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/***************************************************************************/ | ||
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/* | ||
* Define the IO and interrupt resources of the 2 SMC9196 interfaces. | ||
*/ | ||
#define NETTEL_SMC0_ADDR 0x30600300 | ||
#define NETTEL_SMC0_IRQ 29 | ||
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#define NETTEL_SMC1_ADDR 0x30600000 | ||
#define NETTEL_SMC1_IRQ 27 | ||
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/* | ||
* We need some access into the SMC9196 registers. Define those registers | ||
* we will need here (including the smc91x.h doesn't seem to give us these | ||
* in a simple form). | ||
*/ | ||
#define SMC91xx_BANKSELECT 14 | ||
#define SMC91xx_BASEADDR 2 | ||
#define SMC91xx_BASEMAC 4 | ||
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/***************************************************************************/ | ||
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static struct resource nettel_smc91x_0_resources[] = { | ||
{ | ||
.start = NETTEL_SMC0_ADDR, | ||
.end = NETTEL_SMC0_ADDR + 0x20, | ||
.flags = IORESOURCE_MEM, | ||
}, | ||
{ | ||
.start = NETTEL_SMC0_IRQ, | ||
.end = NETTEL_SMC0_IRQ, | ||
.flags = IORESOURCE_IRQ, | ||
}, | ||
}; | ||
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static struct resource nettel_smc91x_1_resources[] = { | ||
{ | ||
.start = NETTEL_SMC1_ADDR, | ||
.end = NETTEL_SMC1_ADDR + 0x20, | ||
.flags = IORESOURCE_MEM, | ||
}, | ||
{ | ||
.start = NETTEL_SMC1_IRQ, | ||
.end = NETTEL_SMC1_IRQ, | ||
.flags = IORESOURCE_IRQ, | ||
}, | ||
}; | ||
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static struct platform_device nettel_smc91x[] = { | ||
{ | ||
.name = "smc91x", | ||
.id = 0, | ||
.num_resources = ARRAY_SIZE(nettel_smc91x_0_resources), | ||
.resource = nettel_smc91x_0_resources, | ||
}, | ||
{ | ||
.name = "smc91x", | ||
.id = 1, | ||
.num_resources = ARRAY_SIZE(nettel_smc91x_1_resources), | ||
.resource = nettel_smc91x_1_resources, | ||
}, | ||
}; | ||
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static struct platform_device *nettel_devices[] __initdata = { | ||
&nettel_smc91x[0], | ||
&nettel_smc91x[1], | ||
}; | ||
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/***************************************************************************/ | ||
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static u8 nettel_macdefault[] __initdata = { | ||
0x00, 0xd0, 0xcf, 0x00, 0x00, 0x01, | ||
}; | ||
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/* | ||
* Set flash contained MAC address into SMC9196 core. Make sure the flash | ||
* MAC address is sane, and not an empty flash. If no good use the Moreton | ||
* Bay default MAC address instead. | ||
*/ | ||
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static void __init nettel_smc91x_setmac(unsigned int ioaddr, unsigned int flashaddr) | ||
{ | ||
u16 *macp; | ||
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macp = (u16 *) flashaddr; | ||
if ((macp[0] == 0xffff) && (macp[1] == 0xffff) && (macp[2] == 0xffff)) | ||
macp = (u16 *) &nettel_macdefault[0]; | ||
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writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT); | ||
writew(macp[0], ioaddr + SMC91xx_BASEMAC); | ||
writew(macp[1], ioaddr + SMC91xx_BASEMAC + 2); | ||
writew(macp[2], ioaddr + SMC91xx_BASEMAC + 4); | ||
} | ||
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/***************************************************************************/ | ||
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/* | ||
* Re-map the address space of at least one of the SMC ethernet | ||
* parts. Both parts power up decoding the same address, so we | ||
* need to move one of them first, before doing anything else. | ||
*/ | ||
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static void __init nettel_smc91x_init(void) | ||
{ | ||
writew(0x00ec, MCF_MBAR + MCFSIM_PADDR); | ||
mcf_setppdata(0, 0x0080); | ||
writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT); | ||
writew(0x0067, NETTEL_SMC0_ADDR + SMC91xx_BASEADDR); | ||
mcf_setppdata(0x0080, 0); | ||
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/* Set correct chip select timing for SMC9196 accesses */ | ||
writew(0x1180, MCF_MBAR + MCFSIM_CSCR3); | ||
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/* Set the SMC interrupts to be auto-vectored */ | ||
mcf_autovector(NETTEL_SMC0_IRQ); | ||
mcf_autovector(NETTEL_SMC1_IRQ); | ||
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/* Set MAC addresses from flash for both interfaces */ | ||
nettel_smc91x_setmac(NETTEL_SMC0_ADDR, 0xf0006000); | ||
nettel_smc91x_setmac(NETTEL_SMC1_ADDR, 0xf0006006); | ||
} | ||
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/***************************************************************************/ | ||
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static int __init init_nettel(void) | ||
{ | ||
nettel_smc91x_init(); | ||
platform_add_devices(nettel_devices, ARRAY_SIZE(nettel_devices)); | ||
return 0; | ||
} | ||
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arch_initcall(init_nettel); | ||
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/***************************************************************************/ |