init.c File Reference

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/log2.h>
#include <asm/mmu_context.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/cacheflush.h>
#include <asm/cache.h>
#include <asm/elf.h>
#include <asm/io.h>
#include <asm/smp.h>
#include <asm/sh_bios.h>
#include <asm/setup.h>

Go to the source code of this file.

Macros
#define	cpu_has_fpu   0
#define	cpu_has_dsp   0
#define	onchip_setup(x)
#define	speculative_execution_init()   do { } while (0)
#define	expmask_init()   do { } while (0)
#define	cache_init()   do { } while (0)
#define	CSHAPE(totalsize, linesize, assoc)   ((totalsize & ~0xff) | (linesize << 4) | assoc)
#define	CACHE_DESC_SHAPE(desc)   CSHAPE((desc).way_size * (desc).ways, ilog2((desc).linesz), (desc).ways)

Functions
	onchip_setup (fpu)
	onchip_setup (dsp)
void	__attribute__ ((weak))
asmlinkage void __cpuinit	cpu_init (void)

Macro Definition Documentation

#define CACHE_DESC_SHAPE

(

desc

)

CSHAPE((desc).way_size * (desc).ways, ilog2((desc).linesz), (desc).ways)

Definition at line 202 of file init.c.

#define cache_init

(

void

)

do { } while (0)

Definition at line 196 of file init.c.

#define cpu_has_dsp   0

Definition at line 38 of file init.c.

#define cpu_has_fpu   0

Definition at line 32 of file init.c.

#define CSHAPE	(		totalsize,
			linesize,
			assoc
	)		((totalsize & ~0xff) | (linesize << 4) | assoc)

Definition at line 199 of file init.c.

#define expmask_init

(

)

do { } while (0)

Definition at line 98 of file init.c.

#define onchip_setup

(

x

)

Value:

static int x##_disabled __cpuinitdata = !cpu_has_##x;   \
                            \
static int __cpuinit x##_setup(char *opts)          \
{                           \
    x##_disabled = 1;               \
    return 1;                   \
}                           \
__setup("no" __stringify(x), x##_setup);

Definition at line 45 of file init.c.

#define speculative_execution_init

(

)

do { } while (0)

Definition at line 72 of file init.c.

Function Documentation

void __attribute__ ( (weak)  )

read

Definition at line 102 of file init.c.

asmlinkage void __cpuinit cpu_init

(

void

)

cpu_init

This is our initial entry point for each CPU, and is invoked on the boot CPU prior to calling start_kernel(). For SMP, a combination of this and start_secondary() will bring up each processor to a ready state prior to hand forking the idle loop.

We do all of the basic processor init here, including setting up the caches, FPU, DSP, etc. By the time start_kernel() is hit (and subsequently platform_setup()) things like determining the CPU subtype and initial configuration will all be done.

Each processor family is still responsible for doing its own probing and cache configuration in cpu_probe().

Definition at line 298 of file init.c.

onchip_setup

(

fpu

)

onchip_setup

(

dsp

)