diff options
Diffstat (limited to 'target/linux/ar71xx/files/arch/mips/ath79/routerboot.c')
| -rw-r--r-- | target/linux/ar71xx/files/arch/mips/ath79/routerboot.c | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/routerboot.c b/target/linux/ar71xx/files/arch/mips/ath79/routerboot.c deleted file mode 100644 index 4c0cd1314a..0000000000 --- a/target/linux/ar71xx/files/arch/mips/ath79/routerboot.c +++ /dev/null @@ -1,354 +0,0 @@ -/* - * RouterBoot helper routines - * - * Copyright (C) 2012 Gabor Juhos <juhosg@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - */ - -#define pr_fmt(fmt) "rb: " fmt - -#include <linux/kernel.h> -#include <linux/kobject.h> -#include <linux/slab.h> -#include <linux/errno.h> -#include <linux/routerboot.h> -#include <linux/rle.h> -#include <linux/lzo.h> - -#include "routerboot.h" - -#define RB_BLOCK_SIZE 0x1000 -#define RB_ART_SIZE 0x10000 -#define RB_MAGIC_ERD 0x00455244 /* extended radio data */ - -static struct rb_info rb_info; - -static u32 get_u32(void *buf) -{ - u8 *p = buf; - - return ((u32) p[3] + ((u32) p[2] << 8) + ((u32) p[1] << 16) + - ((u32) p[0] << 24)); -} - -static u16 get_u16(void *buf) -{ - u8 *p = buf; - - return (u16) p[1] + ((u16) p[0] << 8); -} - -__init int -routerboot_find_magic(u8 *buf, unsigned int buflen, u32 *offset, bool hard) -{ - u32 magic_ref = hard ? RB_MAGIC_HARD : RB_MAGIC_SOFT; - u32 magic; - u32 cur = *offset; - - while (cur < buflen) { - magic = get_u32(buf + cur); - if (magic == magic_ref) { - *offset = cur; - return 0; - } - - cur += 0x1000; - } - - return -ENOENT; -} - -__init int -routerboot_find_tag(u8 *buf, unsigned int buflen, u16 tag_id, - u8 **tag_data, u16 *tag_len) -{ - uint32_t magic; - bool align = false; - int ret; - - if (buflen < 4) - return -EINVAL; - - magic = get_u32(buf); - switch (magic) { - case RB_MAGIC_ERD: - align = true; - /* fall trough */ - case RB_MAGIC_HARD: - /* skip magic value */ - buf += 4; - buflen -= 4; - break; - - case RB_MAGIC_SOFT: - if (buflen < 8) - return -EINVAL; - - /* skip magic and CRC value */ - buf += 8; - buflen -= 8; - - break; - - default: - return -EINVAL; - } - - ret = -ENOENT; - while (buflen > 2) { - u16 id; - u16 len; - - len = get_u16(buf); - buf += 2; - buflen -= 2; - - if (buflen < 2) - break; - - id = get_u16(buf); - buf += 2; - buflen -= 2; - - if (id == RB_ID_TERMINATOR) - break; - - if (buflen < len) - break; - - if (id == tag_id) { - if (tag_len) - *tag_len = len; - if (tag_data) - *tag_data = buf; - ret = 0; - break; - } - - if (align) - len = (len + 3) / 4; - - buf += len; - buflen -= len; - } - - return ret; -} - -static inline int -rb_find_hard_cfg_tag(u16 tag_id, u8 **tag_data, u16 *tag_len) -{ - if (!rb_info.hard_cfg_data || - !rb_info.hard_cfg_size) - return -ENOENT; - - return routerboot_find_tag(rb_info.hard_cfg_data, - rb_info.hard_cfg_size, - tag_id, tag_data, tag_len); -} - -__init const char * -rb_get_board_name(void) -{ - u16 tag_len; - u8 *tag; - int err; - - err = rb_find_hard_cfg_tag(RB_ID_BOARD_NAME, &tag, &tag_len); - if (err) - return NULL; - - return tag; -} - -__init u32 -rb_get_hw_options(void) -{ - u16 tag_len; - u8 *tag; - int err; - - err = rb_find_hard_cfg_tag(RB_ID_HW_OPTIONS, &tag, &tag_len); - if (err) - return 0; - - return get_u32(tag); -} - -static void * __init -__rb_get_wlan_data(u16 id) -{ - u16 tag_len; - u8 *tag; - void *buf; - int err; - u32 magic; - size_t src_done; - size_t dst_done; - - err = rb_find_hard_cfg_tag(RB_ID_WLAN_DATA, &tag, &tag_len); - if (err) { - pr_err("no calibration data found\n"); - goto err; - } - - buf = kmalloc(RB_ART_SIZE, GFP_KERNEL); - if (buf == NULL) { - pr_err("no memory for calibration data\n"); - goto err; - } - - magic = get_u32(tag); - if (magic == RB_MAGIC_ERD) { - u8 *erd_data; - u16 erd_len; - - err = routerboot_find_tag(tag, tag_len, 0x1, - &erd_data, &erd_len); - if (err) { - pr_err("no ERD data found for id %u\n", id); - goto err_free; - } - - dst_done = RB_ART_SIZE; - err = lzo1x_decompress_safe(erd_data, erd_len, buf, &dst_done); - if (err) { - pr_err("unable to decompress calibration data %d\n", - err); - goto err_free; - } - } else { - err = rle_decode((char *) tag, tag_len, buf, RB_ART_SIZE, - &src_done, &dst_done); - if (err) { - pr_err("unable to decode calibration data\n"); - goto err_free; - } - } - - return buf; - -err_free: - kfree(buf); -err: - return NULL; -} - -__init void * -rb_get_wlan_data(void) -{ - return __rb_get_wlan_data(0); -} - -__init void * -rb_get_ext_wlan_data(u16 id) -{ - return __rb_get_wlan_data(id); -} - -__init const struct rb_info * -rb_init_info(void *data, unsigned int size) -{ - unsigned int offset; - - if (size == 0 || (size % RB_BLOCK_SIZE) != 0) - return NULL; - - for (offset = 0; offset < size; offset += RB_BLOCK_SIZE) { - u32 magic; - - magic = get_u32(data + offset); - switch (magic) { - case RB_MAGIC_HARD: - rb_info.hard_cfg_offs = offset; - break; - - case RB_MAGIC_SOFT: - rb_info.soft_cfg_offs = offset; - break; - } - } - - if (!rb_info.hard_cfg_offs) { - pr_err("could not find a valid RouterBOOT hard config\n"); - return NULL; - } - - if (!rb_info.soft_cfg_offs) { - pr_err("could not find a valid RouterBOOT soft config\n"); - return NULL; - } - - rb_info.hard_cfg_size = RB_BLOCK_SIZE; - rb_info.hard_cfg_data = kmemdup(data + rb_info.hard_cfg_offs, - RB_BLOCK_SIZE, GFP_KERNEL); - if (!rb_info.hard_cfg_data) - return NULL; - - rb_info.board_name = rb_get_board_name(); - rb_info.hw_options = rb_get_hw_options(); - - return &rb_info; -} - -#if 0 -static char *rb_ext_wlan_data; - -static ssize_t -rb_ext_wlan_data_read(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, char *buf, - loff_t off, size_t count) -{ - if (off + count > attr->size) - return -EFBIG; - - memcpy(buf, &rb_ext_wlan_data[off], count); - - return count; -} - -static const struct bin_attribute rb_ext_wlan_data_attr = { - .attr = { - .name = "ext_wlan_data", - .mode = S_IRUSR | S_IWUSR, - }, - .read = rb_ext_wlan_data_read, - .size = RB_ART_SIZE, -}; - -static int __init rb_sysfs_init(void) -{ - struct kobject *rb_kobj; - int ret; - - rb_ext_wlan_data = rb_get_ext_wlan_data(1); - if (rb_ext_wlan_data == NULL) - return -ENOENT; - - rb_kobj = kobject_create_and_add("routerboot", firmware_kobj); - if (rb_kobj == NULL) { - ret = -ENOMEM; - pr_err("unable to create sysfs entry\n"); - goto err_free_wlan_data; - } - - ret = sysfs_create_bin_file(rb_kobj, &rb_ext_wlan_data_attr); - if (ret) { - pr_err("unable to create sysfs file, %d\n", ret); - goto err_put_kobj; - } - - return 0; - -err_put_kobj: - kobject_put(rb_kobj); -err_free_wlan_data: - kfree(rb_ext_wlan_data); - return ret; -} - -late_initcall(rb_sysfs_init); -#endif |