historical/m0-applesillicon.git/xnu-qemu-arm64-5.1.0/roms/skiboot/external/common/arch_flash.h
2024-01-16 11:20:27 -06:00

50 lines
1.5 KiB
C

/* Copyright 2015 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __EXTERNAL_ARCH_FLASH_H
#define __EXTERNAL_ARCH_FLASH_H
#include <getopt.h>
#include <libflash/blocklevel.h>
enum flash_access {
PNOR_DIRECT,
PNOR_MTD,
BMC_DIRECT,
BMC_MTD,
ACCESS_INVAL
};
int arch_flash_init(struct blocklevel_device **bl, const char *file,
bool keep_alive);
void arch_flash_close(struct blocklevel_device *bl, const char *file);
/* Low level functions that an architecture may support */
/*
* If called BEFORE init, then this dictates how the flash will be
* accessed.
* If called AFTER init, then this returns how the flash is being accessed.
*/
enum flash_access arch_flash_access(struct blocklevel_device *bl,
enum flash_access access);
int arch_flash_erase_chip(struct blocklevel_device *bl);
int arch_flash_4b_mode(struct blocklevel_device *bl, int set_4b);
int arch_flash_set_wrprotect(struct blocklevel_device *bl, int set);
#endif /* __EXTERNAL_ARCH_FLASH_H */