arch/m68k/coldfire/amcore.c

Source file repositories/reference/linux-study-clean/arch/m68k/coldfire/amcore.c

File Facts

System
Linux kernel
Corpus path
arch/m68k/coldfire/amcore.c
Extension
.c
Size
3319 bytes
Lines
157
Domain
Architecture Layer
Bucket
arch/m68k
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/dm9000.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>

#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/io.h>

#if IS_ENABLED(CONFIG_DM9000)

#define DM9000_IRQ	25
#define DM9000_ADDR	0x30000000

/*
 * DEVICES and related device RESOURCES
 */
static struct resource dm9000_resources[] = {
	/* physical address of the address register (CMD [A2] to 0)*/
	[0] = {
		.start  = DM9000_ADDR,
		.end    = DM9000_ADDR,
		.flags  = IORESOURCE_MEM,
	},
	/*
	 * physical address of the data register (CMD [A2] to 1),
	 * driver wants a range >=4 to assume a 32bit data bus
	 */
	[1] = {
		.start  = DM9000_ADDR + 4,
		.end    = DM9000_ADDR + 7,
		.flags  = IORESOURCE_MEM,
	},
	/* IRQ line the device's interrupt pin is connected to */
	[2] = {
		.start  = DM9000_IRQ,
		.end    = DM9000_IRQ,
		.flags  = IORESOURCE_IRQ,
	},
};

static struct dm9000_plat_data dm9000_platdata = {
	.flags		= DM9000_PLATF_32BITONLY,
};

static struct platform_device dm9000_device = {
	.name           = "dm9000",
	.id             = 0,
	.num_resources  = ARRAY_SIZE(dm9000_resources),
	.resource       = dm9000_resources,
	.dev = {
		.platform_data = &dm9000_platdata,
	}
};
#endif

static void __init dm9000_pre_init(void)
{
	/* Set the dm9000 interrupt to be auto-vectored */
	mcf_autovector(DM9000_IRQ);
}

/*
 * Partitioning of parallel NOR flash (39VF3201B)
 */
static struct mtd_partition amcore_partitions[] = {
	{
		.name	= "U-Boot (128K)",
		.size	= 0x20000,
		.offset	= 0x0
	},
	{
		.name	= "Kernel+ROMfs (2994K)",
		.size	= 0x2E0000,
		.offset	= MTDPART_OFS_APPEND
	},
	{
		.name	= "Flash Free Space (1024K)",
		.size	= MTDPART_SIZ_FULL,
		.offset	= MTDPART_OFS_APPEND
	}
};

static struct physmap_flash_data flash_data = {

Annotation

Implementation Notes