arch/powerpc/platforms/microwatt/setup.c

Source file repositories/reference/linux-study-clean/arch/powerpc/platforms/microwatt/setup.c

File Facts

System
Linux kernel
Corpus path
arch/powerpc/platforms/microwatt/setup.c
Extension
.c
Size
1229 bytes
Lines
62
Domain
Architecture Layer
Bucket
arch/powerpc
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/types.h>
#include <linux/kernel.h>
#include <linux/stddef.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_platform.h>

#include <asm/machdep.h>
#include <asm/time.h>
#include <asm/xics.h>
#include <asm/udbg.h>

#include "microwatt.h"

static void __init microwatt_init_IRQ(void)
{
	xics_init();
}

static int __init microwatt_populate(void)
{
	return of_platform_default_populate(NULL, NULL, NULL);
}
machine_arch_initcall(microwatt, microwatt_populate);

static int __init microwatt_probe(void)
{
	/* Main reason for having this is to start the other CPU(s) */
	if (IS_ENABLED(CONFIG_SMP))
		microwatt_init_smp();
	return 1;
}

static void __init microwatt_setup_arch(void)
{
	microwatt_rng_init();
}

static void microwatt_idle(void)
{
	if (!prep_irq_for_idle_irqsoff())
		return;

	__asm__ __volatile__ ("wait");
}

define_machine(microwatt) {
	.name			= "microwatt",
	.compatible		= "microwatt-soc",
	.probe			= microwatt_probe,
	.init_IRQ		= microwatt_init_IRQ,
	.setup_arch		= microwatt_setup_arch,
	.progress		= udbg_progress,
	.power_save		= microwatt_idle,
};

Annotation

Implementation Notes