[deliverable/linux.git] / arch / m68knommu / platform / 528x / config.c

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

/*
 *	linux/arch/m68knommu/platform/528x/config.c
 *
 *	Sub-architcture dependant initialization code for the Freescale
 *	5280, 5281 and 5282 CPUs.
 *
 *	Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
 *	Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
 */

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

#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>

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

static struct mcf_platform_uart m528x_uart_platform[] = {
	{
		.mapbase	= MCF_MBAR + MCFUART_BASE1,
		.irq		= MCFINT_VECBASE + MCFINT_UART0,
	},
	{
		.mapbase 	= MCF_MBAR + MCFUART_BASE2,
		.irq		= MCFINT_VECBASE + MCFINT_UART0 + 1,
	},
	{
		.mapbase 	= MCF_MBAR + MCFUART_BASE3,
		.irq		= MCFINT_VECBASE + MCFINT_UART0 + 2,
	},
	{ },
};

static struct platform_device m528x_uart = {
	.name			= "mcfuart",
	.id			= 0,
	.dev.platform_data	= m528x_uart_platform,
};

static struct resource m528x_fec_resources[] = {
	{
		.start		= MCF_MBAR + 0x1000,
		.end		= MCF_MBAR + 0x1000 + 0x7ff,
		.flags		= IORESOURCE_MEM,
	},
	{
		.start		= 64 + 23,
		.end		= 64 + 23,
		.flags		= IORESOURCE_IRQ,
	},
	{
		.start		= 64 + 27,
		.end		= 64 + 27,
		.flags		= IORESOURCE_IRQ,
	},
	{
		.start		= 64 + 29,
		.end		= 64 + 29,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device m528x_fec = {
	.name			= "fec",
	.id			= 0,
	.num_resources		= ARRAY_SIZE(m528x_fec_resources),
	.resource		= m528x_fec_resources,
};


static struct platform_device *m528x_devices[] __initdata = {
	&m528x_uart,
	&m528x_fec,
};

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

static void __init m528x_uart_init_line(int line, int irq)
{
	u8 port;

	if ((line < 0) || (line > 2))
		return;

	/* make sure PUAPAR is set for UART0 and UART1 */
	if (line < 2) {
		port = readb(MCF_MBAR + MCF5282_GPIO_PUAPAR);
		port |= (0x03 << (line * 2));
		writeb(port, MCF_MBAR + MCF5282_GPIO_PUAPAR);
	}
}

static void __init m528x_uarts_init(void)
{
	const int nrlines = ARRAY_SIZE(m528x_uart_platform);
	int line;

	for (line = 0; (line < nrlines); line++)
		m528x_uart_init_line(line, m528x_uart_platform[line].irq);
}

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

static void __init m528x_fec_init(void)
{
	u16 v16;

	/* Set multi-function pins to ethernet mode for fec0 */
	v16 = readw(MCF_IPSBAR + 0x100056);
	writew(v16 | 0xf00, MCF_IPSBAR + 0x100056);
	writeb(0xc0, MCF_IPSBAR + 0x100058);
}

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

static void m528x_cpu_reset(void)
{
	local_irq_disable();
	__raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
}

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

#ifdef CONFIG_WILDFIRE
void wildfire_halt(void)
{
	writeb(0, 0x30000007);
	writeb(0x2, 0x30000007);
}
#endif

#ifdef CONFIG_WILDFIREMOD
void wildfiremod_halt(void)
{
	printk(KERN_INFO "WildFireMod hibernating...\n");

	/* Set portE.5 to Digital IO */
	MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));

	/* Make portE.5 an output */
	MCF5282_GPIO_DDRE |= (1 << 5);

	/* Now toggle portE.5 from low to high */
	MCF5282_GPIO_PORTE &= ~(1 << 5);
	MCF5282_GPIO_PORTE |= (1 << 5);

	printk(KERN_EMERG "Failed to hibernate. Halting!\n");
}
#endif

void __init config_BSP(char *commandp, int size)
{
#ifdef CONFIG_WILDFIRE
	mach_halt = wildfire_halt;
#endif
#ifdef CONFIG_WILDFIREMOD
	mach_halt = wildfiremod_halt;
#endif
}

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

static int __init init_BSP(void)
{
	mach_reset = m528x_cpu_reset;
	m528x_uarts_init();
	m528x_fec_init();
	platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices));
	return 0;
}

arch_initcall(init_BSP);

/***************************************************************************/
Commit	Line	Data
1da177e4 LT	1	/***************************************************************************/
	2
	3	/*
	4	* linux/arch/m68knommu/platform/528x/config.c
	5	*
980f9235 GU	6	* Sub-architcture dependant initialization code for the Freescale
980f9235 GU	7	* 5280, 5281 and 5282 CPUs.
1da177e4 LT	8	*
	9	* Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
	10	* Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
	11	*/
	12
	13	/***************************************************************************/
	14
1da177e4	15	#include <linux/kernel.h>
1da177e4 LT	16	#include <linux/param.h>
1da177e4 LT	17	#include <linux/init.h>
eb49e907	18	#include <linux/platform_device.h>
eb49e907	19	#include <linux/io.h>
1da177e4 LT	20	#include <asm/machdep.h>
	21	#include <asm/coldfire.h>
	22	#include <asm/mcfsim.h>
eb49e907	23	#include <asm/mcfuart.h>
1da177e4 LT	24
	25	/***************************************************************************/
	26
eb49e907 GU	27	static struct mcf_platform_uart m528x_uart_platform[] = {
	28	{
	29	.mapbase = MCF_MBAR + MCFUART_BASE1,
	30	.irq = MCFINT_VECBASE + MCFINT_UART0,
	31	},
	32	{
	33	.mapbase = MCF_MBAR + MCFUART_BASE2,
	34	.irq = MCFINT_VECBASE + MCFINT_UART0 + 1,
	35	},
	36	{
	37	.mapbase = MCF_MBAR + MCFUART_BASE3,
	38	.irq = MCFINT_VECBASE + MCFINT_UART0 + 2,
	39	},
	40	{ },
1da177e4 LT	41	};
1da177e4 LT	42
eb49e907 GU	43	static struct platform_device m528x_uart = {
	44	.name = "mcfuart",
	45	.id = 0,
	46	.dev.platform_data = m528x_uart_platform,
	47	};
	48
ffba3f48 GU	49	static struct resource m528x_fec_resources[] = {
	50	{
	51	.start = MCF_MBAR + 0x1000,
	52	.end = MCF_MBAR + 0x1000 + 0x7ff,
	53	.flags = IORESOURCE_MEM,
	54	},
	55	{
	56	.start = 64 + 23,
	57	.end = 64 + 23,
	58	.flags = IORESOURCE_IRQ,
	59	},
	60	{
	61	.start = 64 + 27,
	62	.end = 64 + 27,
	63	.flags = IORESOURCE_IRQ,
	64	},
	65	{
	66	.start = 64 + 29,
	67	.end = 64 + 29,
	68	.flags = IORESOURCE_IRQ,
	69	},
	70	};
	71
	72	static struct platform_device m528x_fec = {
	73	.name = "fec",
	74	.id = 0,
	75	.num_resources = ARRAY_SIZE(m528x_fec_resources),
	76	.resource = m528x_fec_resources,
	77	};
	78
	79
eb49e907 GU	80	static struct platform_device *m528x_devices[] __initdata = {
eb49e907 GU	81	&m528x_uart,
ffba3f48	82	&m528x_fec,
eb49e907 GU	83	};
	84
	85	/***************************************************************************/
	86
eb49e907 GU	87	static void __init m528x_uart_init_line(int line, int irq)
	88	{
	89	u8 port;
eb49e907 GU	90
	91	if ((line < 0) \|\| (line > 2))
	92	return;
	93
eb49e907 GU	94	/* make sure PUAPAR is set for UART0 and UART1 */
	95	if (line < 2) {
	96	port = readb(MCF_MBAR + MCF5282_GPIO_PUAPAR);
	97	port \|= (0x03 << (line * 2));
	98	writeb(port, MCF_MBAR + MCF5282_GPIO_PUAPAR);
	99	}
	100	}
	101
	102	static void __init m528x_uarts_init(void)
	103	{
	104	const int nrlines = ARRAY_SIZE(m528x_uart_platform);
	105	int line;
	106
	107	for (line = 0; (line < nrlines); line++)
	108	m528x_uart_init_line(line, m528x_uart_platform[line].irq);
	109	}
1da177e4 LT	110
	111	/***************************************************************************/
	112
ffba3f48 GU	113	static void __init m528x_fec_init(void)
ffba3f48 GU	114	{
ffba3f48 GU	115	u16 v16;
ffba3f48 GU	116
ffba3f48 GU	117	/* Set multi-function pins to ethernet mode for fec0 */
	118	v16 = readw(MCF_IPSBAR + 0x100056);
	119	writew(v16 \| 0xf00, MCF_IPSBAR + 0x100056);
	120	writeb(0xc0, MCF_IPSBAR + 0x100058);
	121	}
	122
	123	/***************************************************************************/
	124
dd65b1de GU	125	static void m528x_cpu_reset(void)
	126	{
	127	local_irq_disable();
	128	__raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
	129	}
	130
	131	/***************************************************************************/
	132
188a9a48 SB	133	#ifdef CONFIG_WILDFIRE
	134	void wildfire_halt(void)
	135	{
	136	writeb(0, 0x30000007);
	137	writeb(0x2, 0x30000007);
	138	}
	139	#endif
	140
	141	#ifdef CONFIG_WILDFIREMOD
	142	void wildfiremod_halt(void)
	143	{
	144	printk(KERN_INFO "WildFireMod hibernating...\n");
	145
	146	/* Set portE.5 to Digital IO */
	147	MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));
	148
	149	/* Make portE.5 an output */
	150	MCF5282_GPIO_DDRE \|= (1 << 5);
	151
	152	/* Now toggle portE.5 from low to high */
	153	MCF5282_GPIO_PORTE &= ~(1 << 5);
	154	MCF5282_GPIO_PORTE \|= (1 << 5);
	155
	156	printk(KERN_EMERG "Failed to hibernate. Halting!\n");
	157	}
	158	#endif
	159
eb49e907	160	void __init config_BSP(char *commandp, int size)
1da177e4	161	{
188a9a48 SB	162	#ifdef CONFIG_WILDFIRE
	163	mach_halt = wildfire_halt;
	164	#endif
	165	#ifdef CONFIG_WILDFIREMOD
	166	mach_halt = wildfiremod_halt;
	167	#endif
1da177e4 LT	168	}
	169
	170	/***************************************************************************/
eb49e907 GU	171
	172	static int __init init_BSP(void)
	173	{
dd65b1de	174	mach_reset = m528x_cpu_reset;
eb49e907	175	m528x_uarts_init();
ffba3f48	176	m528x_fec_init();
eb49e907 GU	177	platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices));
	178	return 0;
	179	}
	180
	181	arch_initcall(init_BSP);
	182
	183	/***************************************************************************/