arch/sh/boards/mach-se/7780/setup.c

Source file repositories/reference/linux-study-clean/arch/sh/boards/mach-se/7780/setup.c

File Facts

System: Linux kernel
Corpus path: arch/sh/boards/mach-se/7780/setup.c
Extension: .c
Size: 2889 bytes
Lines: 112
Domain: Architecture Layer
Bucket: arch/sh
Inferred role: Architecture Layer: exported/initcall integration point
Status: integration 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.

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

linux/init.h
linux/platform_device.h
asm/machvec.h
mach-se/mach/se7780.h
asm/io.h
asm/heartbeat.h

Detected Declarations

function se7780_devices_setup
function se7780_setup
module init se7780_devices_setup

Annotated Snippet

device_initcall(se7780_devices_setup);

#define GPIO_PHCR        0xFFEA000E
#define GPIO_PMSELR      0xFFEA0080
#define GPIO_PECR        0xFFEA0008

static void __init se7780_setup(char **cmdline_p)
{
	/* "SH-Linux" on LED Display */
	__raw_writew( 'S' , PA_LED_DISP + (DISP_SEL0_ADDR << 1) );
	__raw_writew( 'H' , PA_LED_DISP + (DISP_SEL1_ADDR << 1) );
	__raw_writew( '-' , PA_LED_DISP + (DISP_SEL2_ADDR << 1) );
	__raw_writew( 'L' , PA_LED_DISP + (DISP_SEL3_ADDR << 1) );
	__raw_writew( 'i' , PA_LED_DISP + (DISP_SEL4_ADDR << 1) );
	__raw_writew( 'n' , PA_LED_DISP + (DISP_SEL5_ADDR << 1) );
	__raw_writew( 'u' , PA_LED_DISP + (DISP_SEL6_ADDR << 1) );
	__raw_writew( 'x' , PA_LED_DISP + (DISP_SEL7_ADDR << 1) );

	printk(KERN_INFO "Hitachi UL Solutions Engine 7780SE03 support.\n");

	/*
	 * PCI REQ/GNT setting
	 *   REQ0/GNT0 -> USB
	 *   REQ1/GNT1 -> PC Card
	 *   REQ2/GNT2 -> Serial ATA
	 *   REQ3/GNT3 -> PCI slot
	 */
	__raw_writew(0x0213, FPGA_REQSEL);

	/* GPIO setting */
	__raw_writew(0x0000, GPIO_PECR);
	__raw_writew(__raw_readw(GPIO_PHCR)&0xfff3, GPIO_PHCR);
	__raw_writew(0x0c00, GPIO_PMSELR);

	/* iVDR Power ON */
	__raw_writew(0x0001, FPGA_IVDRPW);
}

/*
 * The Machine Vector
 */
static struct sh_machine_vector mv_se7780 __initmv = {
	.mv_name                = "Solution Engine 7780" ,
	.mv_setup               = se7780_setup ,
	.mv_init_irq		= init_se7780_IRQ,
};

Annotation

Immediate include surface: `linux/init.h`, `linux/platform_device.h`, `asm/machvec.h`, `mach-se/mach/se7780.h`, `asm/io.h`, `asm/heartbeat.h`.
Detected declarations: `function se7780_devices_setup`, `function se7780_setup`, `module init se7780_devices_setup`.
Atlas domain: Architecture Layer / arch/sh.
Implementation status: integration implementation candidate.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.