[deliverable/linux.git] / arch / arm / mach-rpc / riscpc.c

/*
 *  linux/arch/arm/mach-rpc/riscpc.c
 *
 *  Copyright (C) 1998-2001 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  Architecture specific fixups.
 */
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/device.h>
#include <linux/serial_8250.h>
#include <linux/ata_platform.h>
#include <linux/io.h>
#include <linux/i2c.h>

#include <asm/elf.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/page.h>
#include <asm/domain.h>
#include <asm/setup.h>

#include <asm/mach/map.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>

extern void rpc_init_irq(void);

unsigned int vram_size;
unsigned int memc_ctrl_reg;
unsigned int number_mfm_drives;

static int __init parse_tag_acorn(const struct tag *tag)
{
	memc_ctrl_reg = tag->u.acorn.memc_control_reg;
	number_mfm_drives = tag->u.acorn.adfsdrives;

	switch (tag->u.acorn.vram_pages) {
	case 512:
		vram_size += PAGE_SIZE * 256;
	case 256:
		vram_size += PAGE_SIZE * 256;
	default:
		break;
	}
#if 0
	if (vram_size) {
		desc->video_start = 0x02000000;
		desc->video_end   = 0x02000000 + vram_size;
	}
#endif
	return 0;
}

__tagtable(ATAG_ACORN, parse_tag_acorn);

static struct map_desc rpc_io_desc[] __initdata = {
 	{	/* VRAM		*/
		.virtual	=  SCREEN_BASE,
		.pfn		= __phys_to_pfn(SCREEN_START),
		.length		= 	2*1048576,
		.type		= MT_DEVICE
	}, {	/* IO space	*/
		.virtual	=  (u32)IO_BASE,
		.pfn		= __phys_to_pfn(IO_START),
		.length		= 	IO_SIZE	 ,
		.type		= MT_DEVICE
	}, {	/* EASI space	*/
		.virtual	= EASI_BASE,
		.pfn		= __phys_to_pfn(EASI_START),
		.length		= EASI_SIZE,
		.type		= MT_DEVICE
	}
};

static void __init rpc_map_io(void)
{
	iotable_init(rpc_io_desc, ARRAY_SIZE(rpc_io_desc));

	/*
	 * Turn off floppy.
	 */
	writeb(0xc, PCIO_BASE + (0x3f2 << 2));

	/*
	 * RiscPC can't handle half-word loads and stores
	 */
	elf_hwcap &= ~HWCAP_HALF;
}

static struct resource acornfb_resources[] = {
	{	/* VIDC */
		.start		= 0x03400000,
		.end		= 0x035fffff,
		.flags		= IORESOURCE_MEM,
	}, {
		.start		= IRQ_VSYNCPULSE,
		.end		= IRQ_VSYNCPULSE,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device acornfb_device = {
	.name			= "acornfb",
	.id			= -1,
	.dev			= {
		.coherent_dma_mask = 0xffffffff,
	},
	.num_resources		= ARRAY_SIZE(acornfb_resources),
	.resource		= acornfb_resources,
};

static struct resource iomd_resources[] = {
	{
		.start		= 0x03200000,
		.end		= 0x0320ffff,
		.flags		= IORESOURCE_MEM,
	},
};

static struct platform_device iomd_device = {
	.name			= "iomd",
	.id			= -1,
	.num_resources		= ARRAY_SIZE(iomd_resources),
	.resource		= iomd_resources,
};

static struct platform_device kbd_device = {
	.name			= "kart",
	.id			= -1,
	.dev			= {
		.parent 	= &iomd_device.dev,
	},
};

static struct plat_serial8250_port serial_platform_data[] = {
	{
		.mapbase	= 0x03010fe0,
		.irq		= 10,
		.uartclk	= 1843200,
		.regshift	= 2,
		.iotype		= UPIO_MEM,
		.flags		= UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
	},
	{ },
};

static struct platform_device serial_device = {
	.name			= "serial8250",
	.id			= PLAT8250_DEV_PLATFORM,
	.dev			= {
		.platform_data	= serial_platform_data,
	},
};

static struct pata_platform_info pata_platform_data = {
	.ioport_shift		= 2,
};

static struct resource pata_resources[] = {
	[0] = {
		.start		= 0x030107c0,
		.end		= 0x030107df,
		.flags		= IORESOURCE_MEM,
	},
	[1] = {
		.start		= 0x03010fd8,
		.end		= 0x03010fdb,
		.flags		= IORESOURCE_MEM,
	},
	[2] = {
		.start		= IRQ_HARDDISK,
		.end		= IRQ_HARDDISK,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device pata_device = {
	.name			= "pata_platform",
	.id			= -1,
	.num_resources		= ARRAY_SIZE(pata_resources),
	.resource		= pata_resources,
	.dev			= {
		.platform_data	= &pata_platform_data,
		.coherent_dma_mask = ~0,	/* grumble */
	},
};

static struct platform_device *devs[] __initdata = {
	&iomd_device,
	&kbd_device,
	&serial_device,
	&acornfb_device,
	&pata_device,
};

static struct i2c_board_info i2c_rtc = {
	I2C_BOARD_INFO("pcf8583", 0x50)
};

static int __init rpc_init(void)
{
	i2c_register_board_info(0, &i2c_rtc, 1);
	return platform_add_devices(devs, ARRAY_SIZE(devs));
}

arch_initcall(rpc_init);

extern struct sys_timer ioc_timer;

MACHINE_START(RISCPC, "Acorn-RiscPC")
	/* Maintainer: Russell King */
	.phys_io	= 0x03000000,
	.io_pg_offst	= ((0xe0000000) >> 18) & 0xfffc,
	.boot_params	= 0x10000100,
	.reserve_lp0	= 1,
	.reserve_lp1	= 1,
	.map_io		= rpc_map_io,
	.init_irq	= rpc_init_irq,
	.timer		= &ioc_timer,
MACHINE_END
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/arch/arm/mach-rpc/riscpc.c
	3	*
	4	* Copyright (C) 1998-2001 Russell King
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* Architecture specific fixups.
	11	*/
	12	#include <linux/kernel.h>
	13	#include <linux/tty.h>
	14	#include <linux/delay.h>
	15	#include <linux/pm.h>
	16	#include <linux/init.h>
	17	#include <linux/sched.h>
	18	#include <linux/device.h>
	19	#include <linux/serial_8250.h>
0a87e3e9	20	#include <linux/ata_platform.h>
fced80c7	21	#include <linux/io.h>
531660ef	22	#include <linux/i2c.h>
1da177e4 LT	23
1da177e4 LT	24	#include <asm/elf.h>
1da177e4	25	#include <asm/mach-types.h>
a09e64fb	26	#include <mach/hardware.h>
1da177e4 LT	27	#include <asm/page.h>
	28	#include <asm/domain.h>
	29	#include <asm/setup.h>
	30
	31	#include <asm/mach/map.h>
	32	#include <asm/mach/arch.h>
	33	#include <asm/mach/time.h>
	34
	35	extern void rpc_init_irq(void);
	36
ebe2a9ff	37	unsigned int vram_size;
1da177e4 LT	38	unsigned int memc_ctrl_reg;
	39	unsigned int number_mfm_drives;
	40
	41	static int __init parse_tag_acorn(const struct tag *tag)
	42	{
	43	memc_ctrl_reg = tag->u.acorn.memc_control_reg;
	44	number_mfm_drives = tag->u.acorn.adfsdrives;
	45
	46	switch (tag->u.acorn.vram_pages) {
	47	case 512:
	48	vram_size += PAGE_SIZE * 256;
	49	case 256:
	50	vram_size += PAGE_SIZE * 256;
	51	default:
	52	break;
	53	}
	54	#if 0
	55	if (vram_size) {
	56	desc->video_start = 0x02000000;
	57	desc->video_end = 0x02000000 + vram_size;
	58	}
	59	#endif
	60	return 0;
	61	}
	62
	63	__tagtable(ATAG_ACORN, parse_tag_acorn);
	64
1da177e4	65	static struct map_desc rpc_io_desc[] __initdata = {
f9258f22 DS	66	{ /* VRAM */
	67	.virtual = SCREEN_BASE,
	68	.pfn = __phys_to_pfn(SCREEN_START),
	69	.length = 2*1048576,
	70	.type = MT_DEVICE
	71	}, { /* IO space */
	72	.virtual = (u32)IO_BASE,
	73	.pfn = __phys_to_pfn(IO_START),
	74	.length = IO_SIZE ,
	75	.type = MT_DEVICE
	76	}, { /* EASI space */
	77	.virtual = EASI_BASE,
	78	.pfn = __phys_to_pfn(EASI_START),
	79	.length = EASI_SIZE,
	80	.type = MT_DEVICE
	81	}
1da177e4 LT	82	};
	83
	84	static void __init rpc_map_io(void)
	85	{
	86	iotable_init(rpc_io_desc, ARRAY_SIZE(rpc_io_desc));
	87
	88	/*
	89	* Turn off floppy.
	90	*/
13a63ab2	91	writeb(0xc, PCIO_BASE + (0x3f2 << 2));
1da177e4 LT	92
	93	/*
	94	* RiscPC can't handle half-word loads and stores
	95	*/
	96	elf_hwcap &= ~HWCAP_HALF;
	97	}
	98
	99	static struct resource acornfb_resources[] = {
	100	{ /* VIDC */
	101	.start = 0x03400000,
	102	.end = 0x035fffff,
	103	.flags = IORESOURCE_MEM,
	104	}, {
	105	.start = IRQ_VSYNCPULSE,
	106	.end = IRQ_VSYNCPULSE,
	107	.flags = IORESOURCE_IRQ,
	108	},
	109	};
	110
	111	static struct platform_device acornfb_device = {
	112	.name = "acornfb",
	113	.id = -1,
	114	.dev = {
	115	.coherent_dma_mask = 0xffffffff,
	116	},
	117	.num_resources = ARRAY_SIZE(acornfb_resources),
	118	.resource = acornfb_resources,
	119	};
	120
	121	static struct resource iomd_resources[] = {
	122	{
	123	.start = 0x03200000,
	124	.end = 0x0320ffff,
	125	.flags = IORESOURCE_MEM,
	126	},
	127	};
	128
	129	static struct platform_device iomd_device = {
	130	.name = "iomd",
	131	.id = -1,
	132	.num_resources = ARRAY_SIZE(iomd_resources),
	133	.resource = iomd_resources,
	134	};
	135
	136	static struct platform_device kbd_device = {
	137	.name = "kart",
	138	.id = -1,
	139	.dev = {
	140	.parent = &iomd_device.dev,
	141	},
	142	};
	143
	144	static struct plat_serial8250_port serial_platform_data[] = {
	145	{
	146	.mapbase = 0x03010fe0,
	147	.irq = 10,
	148	.uartclk = 1843200,
	149	.regshift = 2,
	150	.iotype = UPIO_MEM,
	151	.flags = UPF_BOOT_AUTOCONF \| UPF_IOREMAP \| UPF_SKIP_TEST,
	152	},
	153	{ },
	154	};
	155
156	static struct platform_device serial_device = {
157	.name = "serial8250",
6df29deb	158	.id = PLAT8250_DEV_PLATFORM,
1da177e4 LT	159	.dev = {
	160	.platform_data = serial_platform_data,
	161	},
	162	};
	163
a17dba8d RK	164	static struct pata_platform_info pata_platform_data = {
	165	.ioport_shift = 2,
	166	};
	167
	168	static struct resource pata_resources[] = {
	169	[0] = {
	170	.start = 0x030107c0,
	171	.end = 0x030107df,
	172	.flags = IORESOURCE_MEM,
	173	},
	174	[1] = {
	175	.start = 0x03010fd8,
	176	.end = 0x03010fdb,
	177	.flags = IORESOURCE_MEM,
	178	},
	179	[2] = {
	180	.start = IRQ_HARDDISK,
	181	.end = IRQ_HARDDISK,
	182	.flags = IORESOURCE_IRQ,
	183	},
	184	};
	185
	186	static struct platform_device pata_device = {
	187	.name = "pata_platform",
	188	.id = -1,
	189	.num_resources = ARRAY_SIZE(pata_resources),
	190	.resource = pata_resources,
	191	.dev = {
	192	.platform_data = &pata_platform_data,
	193	.coherent_dma_mask = ~0, /* grumble */
	194	},
	195	};
	196
1da177e4 LT	197	static struct platform_device *devs[] __initdata = {
	198	&iomd_device,
	199	&kbd_device,
	200	&serial_device,
	201	&acornfb_device,
a17dba8d	202	&pata_device,
1da177e4 LT	203	};
1da177e4 LT	204
531660ef RK	205	static struct i2c_board_info i2c_rtc = {
	206	I2C_BOARD_INFO("pcf8583", 0x50)
	207	};
	208
1da177e4 LT	209	static int __init rpc_init(void)
1da177e4 LT	210	{
531660ef	211	i2c_register_board_info(0, &i2c_rtc, 1);
1da177e4 LT	212	return platform_add_devices(devs, ARRAY_SIZE(devs));
	213	}
	214
	215	arch_initcall(rpc_init);
	216
	217	extern struct sys_timer ioc_timer;
	218
	219	MACHINE_START(RISCPC, "Acorn-RiscPC")
e9dea0c6	220	/* Maintainer: Russell King */
e9dea0c6 RK	221	.phys_io = 0x03000000,
	222	.io_pg_offst = ((0xe0000000) >> 18) & 0xfffc,
	223	.boot_params = 0x10000100,
	224	.reserve_lp0 = 1,
	225	.reserve_lp1 = 1,
	226	.map_io = rpc_map_io,
	227	.init_irq = rpc_init_irq,
1da177e4 LT	228	.timer = &ioc_timer,
1da177e4 LT	229	MACHINE_END