arch/xtensa/include/asm/platform.h

Source file repositories/reference/linux-study-clean/arch/xtensa/include/asm/platform.h

File Facts

System
Linux kernel
Corpus path
arch/xtensa/include/asm/platform.h
Extension
.h
Size
1128 bytes
Lines
47
Domain
Architecture Layer
Bucket
arch/xtensa
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

#ifndef _XTENSA_PLATFORM_H
#define _XTENSA_PLATFORM_H

#include <linux/types.h>
#include <asm/bootparam.h>

/*
 * platform_init is called before the mmu is initialized to give the
 * platform a early hook-up. bp_tag_t is a list of configuration tags
 * passed from the boot-loader.
 */
extern void platform_init(bp_tag_t*);

/*
 * platform_setup is called from setup_arch with a pointer to the command-line
 * string.
 */
extern void platform_setup (char **);

/*
 * platform_idle is called from the idle function.
 */
extern void platform_idle (void);

/*
 * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
 */
extern void platform_calibrate_ccount (void);

/*
 * Flush and reset the mmu, simulate a processor reset, and
 * jump to the reset vector.
 */
void cpu_reset(void) __attribute__((noreturn));

#endif	/* _XTENSA_PLATFORM_H */

Annotation

Implementation Notes