arch/mips/cobalt/setup.c

Source file repositories/reference/linux-study-clean/arch/mips/cobalt/setup.c

File Facts

System
Linux kernel
Corpus path
arch/mips/cobalt/setup.c
Extension
.c
Size
2716 bytes
Lines
117
Domain
Architecture Layer
Bucket
arch/mips
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/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/memblock.h>
#include <linux/pm.h>

#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/setup.h>
#include <asm/gt64120.h>

#include <cobalt.h>

const char *get_system_type(void)
{
	switch (cobalt_board_id) {
		case COBALT_BRD_ID_QUBE1:
			return "Cobalt Qube";
		case COBALT_BRD_ID_RAQ1:
			return "Cobalt RaQ";
		case COBALT_BRD_ID_QUBE2:
			return "Cobalt Qube2";
		case COBALT_BRD_ID_RAQ2:
			return "Cobalt RaQ2";
	}
	return "MIPS Cobalt";
}

/*
 * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
 * keyboard controller is never used.
 * Also PCI-ISA bridge DMA controller is never used.
 */
static struct resource cobalt_reserved_resources[] = {
	{	/* dma1 */
		.start	= 0x00,
		.end	= 0x1f,
		.name	= "reserved",
		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
	},
	{	/* keyboard */
		.start	= 0x60,
		.end	= 0x6f,
		.name	= "reserved",
		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
	},
	{	/* dma page reg */
		.start	= 0x80,
		.end	= 0x8f,
		.name	= "reserved",
		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
	},
	{	/* dma2 */
		.start	= 0xc0,
		.end	= 0xdf,
		.name	= "reserved",
		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
	},
};

void __init plat_mem_setup(void)
{
	int i;

	_machine_restart = cobalt_machine_restart;
	_machine_halt = cobalt_machine_halt;
	pm_power_off = cobalt_machine_halt;

	set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));

	/* I/O port resource */
	ioport_resource.end = 0x01ffffff;

	/* These resources have been reserved by VIA SuperI/O chip. */
	for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
		request_resource(&ioport_resource, cobalt_reserved_resources + i);
}

/*
 * Prom init. We read our one and only communication with the firmware.
 * Grab the amount of installed memory.
 * Better boot loaders (CoLo) pass a command line too :-)
 */

void __init prom_init(void)
{
	unsigned long memsz;
	int argc, i;
	char **argv;

Annotation

Implementation Notes