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Commit fa6667fe authored by Greg Ungerer's avatar Greg Ungerer
Browse files

m68knommu: add smc91x support for ColdFire NETtel boards 



The ColdFire based NETtel boards use the SMC9196 ethernet devices.
Switch to using a platform setup for these parts using the smc91x driver.
The init code is taken strait out of arch/m68k/include/asm/mcfsmc.h,
just cleaned up a bit.

Signed-off-by: default avatarGreg Ungerer <gerg@uclinux.org>
parent 4a1479b6

arch/m68knommu/platform/5307/Makefile

+3 −1
Original line number Original line Diff line number Diff line
@@ -15,4 +15,6 @@ 
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1

asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1





obj-y			+= config.o gpio.o

obj-y			+= config.o gpio.o

obj-$(CONFIG_NETtel)	+= nettel.o

obj-$(CONFIG_CLEOPATRA)	+= nettel.o

arch/m68knommu/platform/5307/nettel.c

0 → 100644
+153 −0
Original line number Original line Diff line number Diff line 
/***************************************************************************/



/*

 *	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, 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);



	/* Set correct chip select timing for SMC9196 accesses */

	writew(0x1180, MCF_MBAR + 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);



/***************************************************************************/