f36e710e2d
This driver exposes the data encoded in the "soft_config" flash segment of MikroTik RouterBOARDs devices. It presents the data in a sysfs folder named "soft_config" through a set of human-and-machine-parseable attributes. Changes can be discarded by writing 0 to the 'commit' attribute, or they can be committed to flash storage by writing 1. This driver does not reuse any of the existing code previously found in the "rbcfg" utility and makes this utility obsolete by providing a clean sysfs interface. Like "rbcfg", this driver requires 4K_SECTORS support since the flash partition in which these parameters are stored is typically 4KB in size. Tested-by: Koen Vandeputte <koen.vandeputte@ncentric.com> Tested-by: Roger Pueyo Centelles <roger.pueyo@guifi.net> Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Common definitions for MikroTik RouterBoot data.
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*
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* Copyright (C) 2020 Thibaut VARÈNE <hacks+kernel@slashdirt.org>
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*/
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#ifndef _ROUTERBOOT_H_
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#define _ROUTERBOOT_H_
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#include <linux/types.h>
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// these magic values are stored in cpu-endianness on flash
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#define RB_MAGIC_HARD (('H') | ('a' << 8) | ('r' << 16) | ('d' << 24))
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#define RB_MAGIC_SOFT (('S') | ('o' << 8) | ('f' << 16) | ('t' << 24))
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#define RB_MAGIC_LZOR (('L') | ('Z' << 8) | ('O' << 16) | ('R' << 24))
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#define RB_MAGIC_ERD (('E' << 16) | ('R' << 8) | ('D'))
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#define RB_ART_SIZE 0x10000
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#define RB_MTD_HARD_CONFIG "hard_config"
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#define RB_MTD_SOFT_CONFIG "soft_config"
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int routerboot_tag_find(const u8 *bufhead, const size_t buflen, const u16 tag_id, u16 *pld_ofs, u16 *pld_len);
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int routerboot_rle_decode(const u8 *in, size_t inlen, u8 *out, size_t *outlen);
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int __init rb_hardconfig_init(struct kobject *rb_kobj);
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void __exit rb_hardconfig_exit(void);
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int __init rb_softconfig_init(struct kobject *rb_kobj);
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void __exit rb_softconfig_exit(void);
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ssize_t routerboot_tag_show_string(const u8 *pld, u16 pld_len, char *buf);
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#endif /* _ROUTERBOOT_H_ */
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