setup.c

linux 内核源代码

/*
 * iop13xx platform Initialization
 * Copyright (c) 2005-2006, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307 USA.
 *
 */

#include <linux/serial_8250.h>
#ifdef CONFIG_MTD_PHYSMAP
#include <linux/mtd/physmap.h>
#endif
#include <asm/mach/map.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/hardware/iop_adma.h>

#define IOP13XX_UART_XTAL 33334000
#define IOP13XX_SETUP_DEBUG 0
#define PRINTK(x...) ((void)(IOP13XX_SETUP_DEBUG && printk(x)))

/* Standard IO mapping for all IOP13XX based systems
 */
static struct map_desc iop13xx_std_desc[] __initdata = {
	{    /* mem mapped registers */
		.virtual = IOP13XX_PMMR_VIRT_MEM_BASE,
		.pfn 	 = __phys_to_pfn(IOP13XX_PMMR_PHYS_MEM_BASE),
		.length  = IOP13XX_PMMR_SIZE,
		.type	 = MT_DEVICE,
	}, { /* PCIE IO space */
		.virtual = IOP13XX_PCIE_LOWER_IO_VA,
		.pfn 	 = __phys_to_pfn(IOP13XX_PCIE_LOWER_IO_PA),
		.length  = IOP13XX_PCIX_IO_WINDOW_SIZE,
		.type	 = MT_DEVICE,
	}, { /* PCIX IO space */
		.virtual = IOP13XX_PCIX_LOWER_IO_VA,
		.pfn 	 = __phys_to_pfn(IOP13XX_PCIX_LOWER_IO_PA),
		.length  = IOP13XX_PCIX_IO_WINDOW_SIZE,
		.type	 = MT_DEVICE,
	},
};

static struct resource iop13xx_uart0_resources[] = {
	[0] = {
		.start = IOP13XX_UART0_PHYS,
		.end = IOP13XX_UART0_PHYS + 0x3f,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_IOP13XX_UART0,
		.end = IRQ_IOP13XX_UART0,
		.flags = IORESOURCE_IRQ
	}
};

static struct resource iop13xx_uart1_resources[] = {
	[0] = {
		.start = IOP13XX_UART1_PHYS,
		.end = IOP13XX_UART1_PHYS + 0x3f,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_IOP13XX_UART1,
		.end = IRQ_IOP13XX_UART1,
		.flags = IORESOURCE_IRQ
	}
};

static struct plat_serial8250_port iop13xx_uart0_data[] = {
	{
       .membase     = (char*)(IOP13XX_UART0_VIRT),
       .mapbase     = (IOP13XX_UART0_PHYS),
       .irq         = IRQ_IOP13XX_UART0,
       .uartclk     = IOP13XX_UART_XTAL,
       .regshift    = 2,
       .iotype      = UPIO_MEM,
       .flags       = UPF_SKIP_TEST,
	},
	{  },
};

static struct plat_serial8250_port iop13xx_uart1_data[] = {
	{
       .membase     = (char*)(IOP13XX_UART1_VIRT),
       .mapbase     = (IOP13XX_UART1_PHYS),
       .irq         = IRQ_IOP13XX_UART1,
       .uartclk     = IOP13XX_UART_XTAL,
       .regshift    = 2,
       .iotype      = UPIO_MEM,
       .flags       = UPF_SKIP_TEST,
	},
	{  },
};

/* The ids are fixed up later in iop13xx_platform_init */
static struct platform_device iop13xx_uart0 = {
       .name = "serial8250",
       .id = 0,
       .dev.platform_data = iop13xx_uart0_data,
       .num_resources = 2,
       .resource = iop13xx_uart0_resources,
};

static struct platform_device iop13xx_uart1 = {
       .name = "serial8250",
       .id = 0,
       .dev.platform_data = iop13xx_uart1_data,
       .num_resources = 2,
       .resource = iop13xx_uart1_resources
};

static struct resource iop13xx_i2c_0_resources[] = {
	[0] = {
		.start = IOP13XX_I2C0_PHYS,
		.end = IOP13XX_I2C0_PHYS + 0x18,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_IOP13XX_I2C_0,
		.end = IRQ_IOP13XX_I2C_0,
		.flags = IORESOURCE_IRQ
	}
};

static struct resource iop13xx_i2c_1_resources[] = {
	[0] = {
		.start = IOP13XX_I2C1_PHYS,
		.end = IOP13XX_I2C1_PHYS + 0x18,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_IOP13XX_I2C_1,
		.end = IRQ_IOP13XX_I2C_1,
		.flags = IORESOURCE_IRQ
	}
};

static struct resource iop13xx_i2c_2_resources[] = {
	[0] = {
		.start = IOP13XX_I2C2_PHYS,
		.end = IOP13XX_I2C2_PHYS + 0x18,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_IOP13XX_I2C_2,
		.end = IRQ_IOP13XX_I2C_2,
		.flags = IORESOURCE_IRQ
	}
};

/* I2C controllers. The IOP13XX uses the same block as the IOP3xx, so
 * we just use the same device name.
 */

/* The ids are fixed up later in iop13xx_platform_init */
static struct platform_device iop13xx_i2c_0_controller = {
	.name = "IOP3xx-I2C",
	.id = 0,
	.num_resources = 2,
	.resource = iop13xx_i2c_0_resources
};

static struct platform_device iop13xx_i2c_1_controller = {
	.name = "IOP3xx-I2C",
	.id = 0,
	.num_resources = 2,
	.resource = iop13xx_i2c_1_resources
};

static struct platform_device iop13xx_i2c_2_controller = {
	.name = "IOP3xx-I2C",
	.id = 0,
	.num_resources = 2,
	.resource = iop13xx_i2c_2_resources
};

#ifdef CONFIG_MTD_PHYSMAP
/* PBI Flash Device
 */
static struct physmap_flash_data iq8134x_flash_data = {
	.width = 2,
};

static struct resource iq8134x_flash_resource = {
	.start = IQ81340_FLASHBASE,
	.end   = 0,
	.flags = IORESOURCE_MEM,
};

static struct platform_device iq8134x_flash = {
	.name           = "physmap-flash",
	.id             = 0,
	.dev            = { .platform_data  = &iq8134x_flash_data, },
	.num_resources  = 1,
	.resource       = &iq8134x_flash_resource,
};

static unsigned long iq8134x_probe_flash_size(void)
{
	uint8_t __iomem *flash_addr = ioremap(IQ81340_FLASHBASE, PAGE_SIZE);
	int i;
	char query[3];
	unsigned long size = 0;
	int width = iq8134x_flash_data.width;

	if (flash_addr) {
		/* send CFI 'query' command */
		writew(0x98, flash_addr);

		/* check for CFI compliance */
		for (i = 0; i < 3 * width; i += width)
			query[i / width] = readb(flash_addr + (0x10 * width) + i);

		/* read the size */
		if (memcmp(query, "QRY", 3) == 0)
			size = 1 << readb(flash_addr + (0x27 * width));

		/* send CFI 'read array' command */
		writew(0xff, flash_addr);

		iounmap(flash_addr);
	}

	return size;
}
#endif

/* ADMA Channels */
static struct resource iop13xx_adma_0_resources[] = {
	[0] = {
		.start = IOP13XX_ADMA_PHYS_BASE(0),
		.end = IOP13XX_ADMA_UPPER_PA(0),
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_IOP13XX_ADMA0_EOT,
		.end = IRQ_IOP13XX_ADMA0_EOT,
		.flags = IORESOURCE_IRQ
	},
	[2] = {
		.start = IRQ_IOP13XX_ADMA0_EOC,
		.end = IRQ_IOP13XX_ADMA0_EOC,
		.flags = IORESOURCE_IRQ
	},
	[3] = {
		.start = IRQ_IOP13XX_ADMA0_ERR,
		.end = IRQ_IOP13XX_ADMA0_ERR,
		.flags = IORESOURCE_IRQ
	}
};

static struct resource iop13xx_adma_1_resources[] = {
	[0] = {
		.start = IOP13XX_ADMA_PHYS_BASE(1),
		.end = IOP13XX_ADMA_UPPER_PA(1),
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_IOP13XX_ADMA1_EOT,
		.end = IRQ_IOP13XX_ADMA1_EOT,
		.flags = IORESOURCE_IRQ
	},
	[2] = {
		.start = IRQ_IOP13XX_ADMA1_EOC,
		.end = IRQ_IOP13XX_ADMA1_EOC,
		.flags = IORESOURCE_IRQ
	},
	[3] = {
		.start = IRQ_IOP13XX_ADMA1_ERR,
		.end = IRQ_IOP13XX_ADMA1_ERR,
		.flags = IORESOURCE_IRQ
	}
};

static struct resource iop13xx_adma_2_resources[] = {
	[0] = {
		.start = IOP13XX_ADMA_PHYS_BASE(2),
		.end = IOP13XX_ADMA_UPPER_PA(2),
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_IOP13XX_ADMA2_EOT,
		.end = IRQ_IOP13XX_ADMA2_EOT,
		.flags = IORESOURCE_IRQ
	},
	[2] = {
		.start = IRQ_IOP13XX_ADMA2_EOC,
		.end = IRQ_IOP13XX_ADMA2_EOC,
		.flags = IORESOURCE_IRQ
	},
	[3] = {
		.start = IRQ_IOP13XX_ADMA2_ERR,
		.end = IRQ_IOP13XX_ADMA2_ERR,
		.flags = IORESOURCE_IRQ
	}
};