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154 lines
4.0 KiB
154 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/***************************************************************************/ |
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/* |
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* nettel.c -- startup code support for the NETtel boards |
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* |
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* Copyright (C) 2009, Greg Ungerer ([email protected]) |
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*/ |
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/***************************************************************************/ |
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#include <linux/kernel.h> |
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#include <linux/param.h> |
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#include <linux/init.h> |
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#include <linux/io.h> |
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#include <linux/platform_device.h> |
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#include <asm/coldfire.h> |
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#include <asm/mcfsim.h> |
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#include <asm/nettel.h> |
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/***************************************************************************/ |
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/* |
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* Define the IO and interrupt resources of the 2 SMC9196 interfaces. |
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*/ |
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#define NETTEL_SMC0_ADDR 0x30600300 |
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#define NETTEL_SMC0_IRQ 29 |
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#define NETTEL_SMC1_ADDR 0x30600000 |
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#define NETTEL_SMC1_IRQ 27 |
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/* |
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* We need some access into the SMC9196 registers. Define those registers |
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* we will need here (including the smc91x.h doesn't seem to give us these |
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* in a simple form). |
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*/ |
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#define SMC91xx_BANKSELECT 14 |
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#define SMC91xx_BASEADDR 2 |
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#define SMC91xx_BASEMAC 4 |
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/***************************************************************************/ |
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static struct resource nettel_smc91x_0_resources[] = { |
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{ |
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.start = NETTEL_SMC0_ADDR, |
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.end = NETTEL_SMC0_ADDR + 0x20, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = NETTEL_SMC0_IRQ, |
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.end = NETTEL_SMC0_IRQ, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct resource nettel_smc91x_1_resources[] = { |
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{ |
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.start = NETTEL_SMC1_ADDR, |
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.end = NETTEL_SMC1_ADDR + 0x20, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = NETTEL_SMC1_IRQ, |
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.end = NETTEL_SMC1_IRQ, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct platform_device nettel_smc91x[] = { |
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{ |
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.name = "smc91x", |
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.id = 0, |
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.num_resources = ARRAY_SIZE(nettel_smc91x_0_resources), |
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.resource = nettel_smc91x_0_resources, |
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}, |
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{ |
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.name = "smc91x", |
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.id = 1, |
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.num_resources = ARRAY_SIZE(nettel_smc91x_1_resources), |
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.resource = nettel_smc91x_1_resources, |
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}, |
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}; |
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static struct platform_device *nettel_devices[] __initdata = { |
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&nettel_smc91x[0], |
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&nettel_smc91x[1], |
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}; |
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/***************************************************************************/ |
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static u8 nettel_macdefault[] __initdata = { |
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0x00, 0xd0, 0xcf, 0x00, 0x00, 0x01, |
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}; |
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/* |
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* Set flash contained MAC address into SMC9196 core. Make sure the flash |
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* MAC address is sane, and not an empty flash. If no good use the Moreton |
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* Bay default MAC address instead. |
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*/ |
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static void __init nettel_smc91x_setmac(unsigned int ioaddr, unsigned int flashaddr) |
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{ |
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u16 *macp; |
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macp = (u16 *) flashaddr; |
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if ((macp[0] == 0xffff) && (macp[1] == 0xffff) && (macp[2] == 0xffff)) |
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macp = (u16 *) &nettel_macdefault[0]; |
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writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT); |
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writew(macp[0], ioaddr + SMC91xx_BASEMAC); |
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writew(macp[1], ioaddr + SMC91xx_BASEMAC + 2); |
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writew(macp[2], ioaddr + SMC91xx_BASEMAC + 4); |
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} |
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/***************************************************************************/ |
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/* |
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* Re-map the address space of at least one of the SMC ethernet |
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* parts. Both parts power up decoding the same address, so we |
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* need to move one of them first, before doing anything else. |
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*/ |
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static void __init nettel_smc91x_init(void) |
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{ |
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writew(0x00ec, MCFSIM_PADDR); |
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mcf_setppdata(0, 0x0080); |
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writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT); |
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writew(0x0067, NETTEL_SMC0_ADDR + SMC91xx_BASEADDR); |
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mcf_setppdata(0x0080, 0); |
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/* Set correct chip select timing for SMC9196 accesses */ |
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writew(0x1180, MCFSIM_CSCR3); |
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/* Set the SMC interrupts to be auto-vectored */ |
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mcf_autovector(NETTEL_SMC0_IRQ); |
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mcf_autovector(NETTEL_SMC1_IRQ); |
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/* Set MAC addresses from flash for both interfaces */ |
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nettel_smc91x_setmac(NETTEL_SMC0_ADDR, 0xf0006000); |
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nettel_smc91x_setmac(NETTEL_SMC1_ADDR, 0xf0006006); |
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} |
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/***************************************************************************/ |
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static int __init init_nettel(void) |
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{ |
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nettel_smc91x_init(); |
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platform_add_devices(nettel_devices, ARRAY_SIZE(nettel_devices)); |
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return 0; |
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} |
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arch_initcall(init_nettel); |
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/***************************************************************************/
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