155 lines
4 KiB
C
155 lines
4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/***************************************************************************/
|
|
|
|
/*
|
|
* nettel.c -- startup code support for the NETtel boards
|
|
*
|
|
* Copyright (C) 2009, Greg Ungerer (gerg@snapgear.com)
|
|
*/
|
|
|
|
/***************************************************************************/
|
|
|
|
#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>
|
|
|
|
/***************************************************************************/
|
|
|
|
/*
|
|
* Define the IO and interrupt resources of the 2 SMC9196 interfaces.
|
|
*/
|
|
#define NETTEL_SMC0_ADDR 0x30600300
|
|
#define NETTEL_SMC0_IRQ 29
|
|
|
|
#define NETTEL_SMC1_ADDR 0x30600000
|
|
#define NETTEL_SMC1_IRQ 27
|
|
|
|
/*
|
|
* 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
|
|
|
|
/***************************************************************************/
|
|
|
|
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,
|
|
},
|
|
};
|
|
|
|
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,
|
|
},
|
|
};
|
|
|
|
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,
|
|
},
|
|
};
|
|
|
|
static struct platform_device *nettel_devices[] __initdata = {
|
|
&nettel_smc91x[0],
|
|
&nettel_smc91x[1],
|
|
};
|
|
|
|
/***************************************************************************/
|
|
|
|
static u8 nettel_macdefault[] __initdata = {
|
|
0x00, 0xd0, 0xcf, 0x00, 0x00, 0x01,
|
|
};
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
static void __init nettel_smc91x_setmac(unsigned int ioaddr, unsigned int flashaddr)
|
|
{
|
|
u16 *macp;
|
|
|
|
macp = (u16 *) flashaddr;
|
|
if ((macp[0] == 0xffff) && (macp[1] == 0xffff) && (macp[2] == 0xffff))
|
|
macp = (u16 *) &nettel_macdefault[0];
|
|
|
|
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);
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
static void __init nettel_smc91x_init(void)
|
|
{
|
|
writew(0x00ec, MCFSIM_PADDR);
|
|
mcf_setppdata(0, 0x0080);
|
|
writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT);
|
|
writew(0x0067, NETTEL_SMC0_ADDR + SMC91xx_BASEADDR);
|
|
mcf_setppdata(0x0080, 0);
|
|
|
|
/* Set correct chip select timing for SMC9196 accesses */
|
|
writew(0x1180, MCFSIM_CSCR3);
|
|
|
|
/* Set the SMC interrupts to be auto-vectored */
|
|
mcf_autovector(NETTEL_SMC0_IRQ);
|
|
mcf_autovector(NETTEL_SMC1_IRQ);
|
|
|
|
/* Set MAC addresses from flash for both interfaces */
|
|
nettel_smc91x_setmac(NETTEL_SMC0_ADDR, 0xf0006000);
|
|
nettel_smc91x_setmac(NETTEL_SMC1_ADDR, 0xf0006006);
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
static int __init init_nettel(void)
|
|
{
|
|
nettel_smc91x_init();
|
|
platform_add_devices(nettel_devices, ARRAY_SIZE(nettel_devices));
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(init_nettel);
|
|
|
|
/***************************************************************************/
|