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5 files changed, 717 insertions, 0 deletions
diff --git a/target/linux/generic/files/drivers/platform/mikrotik/Kconfig b/target/linux/generic/files/drivers/platform/mikrotik/Kconfig new file mode 100644 index 0000000000..195a1e8fd3 --- /dev/null +++ b/target/linux/generic/files/drivers/platform/mikrotik/Kconfig @@ -0,0 +1,18 @@ +menuconfig MIKROTIK + bool "Platform support for MikroTik RouterBoard virtual devices" + default n + depends on MTD + select LZO_DECOMPRESS + help + Say Y here to get to see options for the MikroTik RouterBoard platform. + This option alone does not add any kernel code. + + +if MIKROTIK + +config MIKROTIK_RB_SYSFS + tristate "RouterBoot sysfs support" + help + This driver exposes RouterBoot configuration in sysfs. + +endif # MIKROTIK diff --git a/target/linux/generic/files/drivers/platform/mikrotik/Makefile b/target/linux/generic/files/drivers/platform/mikrotik/Makefile new file mode 100644 index 0000000000..4d50ede9ff --- /dev/null +++ b/target/linux/generic/files/drivers/platform/mikrotik/Makefile @@ -0,0 +1,4 @@ +# +# Makefile for MikroTik RouterBoard platform specific drivers +# +obj-$(CONFIG_MIKROTIK_RB_SYSFS) += routerboot.o rb_hardconfig.o diff --git a/target/linux/generic/files/drivers/platform/mikrotik/rb_hardconfig.c b/target/linux/generic/files/drivers/platform/mikrotik/rb_hardconfig.c new file mode 100644 index 0000000000..0aa8cb189a --- /dev/null +++ b/target/linux/generic/files/drivers/platform/mikrotik/rb_hardconfig.c @@ -0,0 +1,481 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for MikroTik RouterBoot hard config. + * + * Copyright (C) 2020 Thibaut VARÈNE <hacks+kernel@slashdirt.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. + * + * This driver exposes the data encoded in the "hard_config" flash segment of + * MikroTik RouterBOARDs devices. It presents the data in a sysfs folder + * named "hard_config". The WLAN calibration data is available on demand via + * the 'wlan_data' sysfs file in that folder. + * + * This driver permanently allocates a chunk of RAM as large as the hard_config + * MTD partition, although it is technically possible to operate entirely from + * the MTD device without using a local buffer (except when requesting WLAN + * calibration data), at the cost of a performance penalty. + * + * Some constant defines extracted from routerboot.{c,h} by Gabor Juhos + * <juhosg@openwrt.org> + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/kobject.h> +#include <linux/bitops.h> +#include <linux/string.h> +#include <linux/mtd/mtd.h> +#include <linux/sysfs.h> +#include <linux/lzo.h> + +#include "routerboot.h" + +#define RB_HARDCONFIG_VER "0.01" +#define RB_HC_PR_PFX "[rb_hardconfig] " + +/* ID values for hardware settings */ +#define RB_ID_FLASH_INFO 0x03 +#define RB_ID_MAC_ADDRESS_PACK 0x04 +#define RB_ID_BOARD_PRODUCT_CODE 0x05 +#define RB_ID_BIOS_VERSION 0x06 +#define RB_ID_SDRAM_TIMINGS 0x08 +#define RB_ID_DEVICE_TIMINGS 0x09 +#define RB_ID_SOFTWARE_ID 0x0A +#define RB_ID_SERIAL_NUMBER 0x0B +#define RB_ID_MEMORY_SIZE 0x0D +#define RB_ID_MAC_ADDRESS_COUNT 0x0E +#define RB_ID_HW_OPTIONS 0x15 +#define RB_ID_WLAN_DATA 0x16 +#define RB_ID_BOARD_IDENTIFIER 0x17 +#define RB_ID_PRODUCT_NAME 0x21 +#define RB_ID_DEFCONF 0x26 + +/* Bit definitions for hardware options */ +#define RB_HW_OPT_NO_UART BIT(0) +#define RB_HW_OPT_HAS_VOLTAGE BIT(1) +#define RB_HW_OPT_HAS_USB BIT(2) +#define RB_HW_OPT_HAS_ATTINY BIT(3) +#define RB_HW_OPT_NO_NAND BIT(14) +#define RB_HW_OPT_HAS_LCD BIT(15) +#define RB_HW_OPT_HAS_POE_OUT BIT(16) +#define RB_HW_OPT_HAS_uSD BIT(17) +#define RB_HW_OPT_HAS_SIM BIT(18) +#define RB_HW_OPT_HAS_SFP BIT(20) +#define RB_HW_OPT_HAS_WIFI BIT(21) +#define RB_HW_OPT_HAS_TS_FOR_ADC BIT(22) +#define RB_HW_OPT_HAS_PLC BIT(29) + +static struct kobject *hc_kobj; +static u8 *hc_buf; // ro buffer after init(): no locking required +static size_t hc_buflen; + +/* Array of known hw_options bits with human-friendly parsing */ +static struct hc_hwopt { + const u32 bit; + const char *str; +} const hc_hwopts[] = { + { + .bit = RB_HW_OPT_NO_UART, + .str = "no UART\t\t", + }, { + .bit = RB_HW_OPT_HAS_VOLTAGE, + .str = "has Vreg\t", + }, { + .bit = RB_HW_OPT_HAS_USB, + .str = "has usb\t\t", + }, { + .bit = RB_HW_OPT_HAS_ATTINY, + .str = "has ATtiny\t", + }, { + .bit = RB_HW_OPT_NO_NAND, + .str = "no NAND\t\t", + }, { + .bit = RB_HW_OPT_HAS_LCD, + .str = "has LCD\t\t", + }, { + .bit = RB_HW_OPT_HAS_POE_OUT, + .str = "has POE out\t", + }, { + .bit = RB_HW_OPT_HAS_uSD, + .str = "has MicroSD\t", + }, { + .bit = RB_HW_OPT_HAS_SIM, + .str = "has SIM\t\t", + }, { + .bit = RB_HW_OPT_HAS_SFP, + .str = "has SFP\t\t", + }, { + .bit = RB_HW_OPT_HAS_WIFI, + .str = "has WiFi\t", + }, { + .bit = RB_HW_OPT_HAS_TS_FOR_ADC, + .str = "has TS ADC\t", + }, { + .bit = RB_HW_OPT_HAS_PLC, + .str = "has PLC\t\t", + }, +}; + +static ssize_t hc_tag_show_string(const u8 *pld, u16 pld_len, char *buf) +{ + return snprintf(buf, pld_len+1, "%s\n", pld); +} + +static ssize_t hc_tag_show_u32(const u8 *pld, u16 pld_len, char *buf) +{ + char *out = buf; + u32 data; // cpu-endian + + /* Caller ensures pld_len > 0 */ + if (pld_len % sizeof(data)) + return -EINVAL; + + data = *(u32 *)pld; + + do { + out += sprintf(out, "0x%08x\n", data); + data++; + } while ((pld_len -= sizeof(data))); + + return out - buf; +} + +/* + * The MAC is stored network-endian on all devices, in 2 32-bit segments: + * <XX:XX:XX:XX> <XX:XX:00:00>. Kernel print has us covered. + */ +static ssize_t hc_tag_show_mac(const u8 *pld, u16 pld_len, char *buf) +{ + if (8 != pld_len) + return -EINVAL; + + return sprintf(buf, "%pM\n", pld); +} + +/* + * Print HW options in a human readable way: + * The raw number and in decoded form + */ +static ssize_t hc_tag_show_hwoptions(const u8 *pld, u16 pld_len, char *buf) +{ + char *out = buf; + u32 data; // cpu-endian + int i; + + if (sizeof(data) != pld_len) + return -EINVAL; + + data = *(u32 *)pld; + out += sprintf(out, "raw\t\t: 0x%08x\n\n", data); + + for (i = 0; i < ARRAY_SIZE(hc_hwopts); i++) + out += sprintf(out, "%s: %s\n", hc_hwopts[i].str, + (data & hc_hwopts[i].bit) ? "true" : "false"); + + return out - buf; +} + +static ssize_t hc_wlan_data_bin_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, char *buf, + loff_t off, size_t count); + +static struct hc_wlan_attr { + struct bin_attribute battr; + u16 pld_ofs; + u16 pld_len; +} hc_wlandata_battr = { + .battr = __BIN_ATTR(wlan_data, S_IRUSR, hc_wlan_data_bin_read, NULL, 0), +}; + +static ssize_t hc_attr_show(struct kobject *kobj, struct kobj_attribute *attr, + char *buf); + +/* Array of known tags to publish in sysfs */ +static struct hc_attr { + const u16 tag_id; + ssize_t (* const tshow)(const u8 *pld, u16 pld_len, char *buf); + struct kobj_attribute kattr; + u16 pld_ofs; + u16 pld_len; +} hc_attrs[] = { + { + .tag_id = RB_ID_FLASH_INFO, + .tshow = hc_tag_show_u32, + .kattr = __ATTR(flash_info, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_MAC_ADDRESS_PACK, + .tshow = hc_tag_show_mac, + .kattr = __ATTR(mac_base, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_BOARD_PRODUCT_CODE, + .tshow = hc_tag_show_string, + .kattr = __ATTR(board_product_code, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_BIOS_VERSION, + .tshow = hc_tag_show_string, + .kattr = __ATTR(booter_version, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_SERIAL_NUMBER, + .tshow = hc_tag_show_string, + .kattr = __ATTR(board_serial, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_MEMORY_SIZE, + .tshow = hc_tag_show_u32, + .kattr = __ATTR(mem_size, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_MAC_ADDRESS_COUNT, + .tshow = hc_tag_show_u32, + .kattr = __ATTR(mac_count, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_HW_OPTIONS, + .tshow = hc_tag_show_hwoptions, + .kattr = __ATTR(hw_options, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_WLAN_DATA, + .tshow = NULL, + }, { + .tag_id = RB_ID_BOARD_IDENTIFIER, + .tshow = hc_tag_show_string, + .kattr = __ATTR(board_identifier, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_PRODUCT_NAME, + .tshow = hc_tag_show_string, + .kattr = __ATTR(product_name, S_IRUSR, hc_attr_show, NULL), + }, { + .tag_id = RB_ID_DEFCONF, + .tshow = hc_tag_show_string, + .kattr = __ATTR(defconf, S_IRUSR, hc_attr_show, NULL), + } +}; + +/* + * If the RB_ID_WLAN_DATA payload starts with RB_MAGIC_ERD, then past + * that magic number the payload itself contains a routerboot tag node + * locating the LZO-compressed calibration data at id 0x1. + */ +static int hc_wlan_data_unpack_erd(const u8 *inbuf, size_t inlen, + void *outbuf, size_t *outlen) +{ + u16 lzo_ofs, lzo_len; + int ret; + + /* Find embedded tag */ + ret = routerboot_tag_find(inbuf, inlen, 0x1, // always id 1 + &lzo_ofs, &lzo_len); + if (ret) { + pr_debug(RB_HC_PR_PFX "ERD data not found\n"); + goto fail; + } + + if (lzo_len > inlen) { + pr_debug(RB_HC_PR_PFX "Invalid ERD data length\n"); + ret = -EINVAL; + goto fail; + } + + ret = lzo1x_decompress_safe(inbuf+lzo_ofs, lzo_len, outbuf, outlen); + if (ret) + pr_debug(RB_HC_PR_PFX "LZO decompression error (%d)\n", ret); + +fail: + return ret; +} + +static int hc_wlan_data_unpack(const size_t tofs, size_t tlen, + void *outbuf, size_t *outlen) +{ + const u8 *lbuf; + u32 magic; + int ret; + + /* Caller ensure tlen > 0. tofs is aligned */ + if ((tofs + tlen) > hc_buflen) + return -EIO; + + lbuf = hc_buf + tofs; + magic = *(u32 *)lbuf; + + ret = -ENODATA; + switch (magic) { + case RB_MAGIC_ERD: + /* Skip magic */ + lbuf += sizeof(magic); + tlen -= sizeof(magic); + ret = hc_wlan_data_unpack_erd(lbuf, tlen, outbuf, outlen); + break; + default: + /* + * If the RB_ID_WLAN_DATA payload doesn't start with a + * magic number, the payload itself is the raw RLE-encoded + * calibration data. + */ + ret = routerboot_rle_decode(lbuf, tlen, outbuf, outlen); + if (ret) + pr_debug(RB_HC_PR_PFX "RLE decoding error (%d)\n", ret); + break; + } + + return ret; +} + +static ssize_t hc_attr_show(struct kobject *kobj, struct kobj_attribute *attr, + char *buf) +{ + struct hc_attr *hc_attr; + const u8 *pld; + u16 pld_len; + + hc_attr = container_of(attr, typeof(*hc_attr), kattr); + + if (!hc_attr->pld_len) + return -ENOENT; + + pld = hc_buf + hc_attr->pld_ofs; + pld_len = hc_attr->pld_len; + + return hc_attr->tshow(pld, pld_len, buf); +} + +/* + * This function will allocate and free memory every time it is called. This + * is not the fastest way to do this, but since the data is rarely read (mainly + * at boot time to load wlan caldata), this makes it possible to save memory for + * the system. + */ +static ssize_t hc_wlan_data_bin_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, char *buf, + loff_t off, size_t count) +{ + struct hc_wlan_attr *hc_wattr; + size_t outlen; + void *outbuf; + int ret; + + hc_wattr = container_of(attr, typeof(*hc_wattr), battr); + + if (!hc_wattr->pld_len) + return -ENOENT; + + outlen = RB_ART_SIZE; + + /* Don't bother unpacking if the source is already too large */ + if (hc_wattr->pld_len > outlen) + return -EFBIG; + + outbuf = kmalloc(outlen, GFP_KERNEL); + if (!outbuf) + return -ENOMEM; + + ret = hc_wlan_data_unpack(hc_wattr->pld_ofs, hc_wattr->pld_len, outbuf, &outlen); + if (ret) { + kfree(outbuf); + return ret; + } + + if (off >= outlen) { + kfree(outbuf); + return 0; + } + + if (off + count > outlen) + count = outlen - off; + + memcpy(buf, outbuf + off, count); + + kfree(outbuf); + return count; +} + +int __init rb_hardconfig_init(struct kobject *rb_kobj) +{ + struct mtd_info *mtd; + size_t bytes_read, buflen; + const u8 *buf; + int i, ret; + u32 magic; + + // TODO allow override + mtd = get_mtd_device_nm(RB_MTD_HARD_CONFIG); + if (IS_ERR(mtd)) + return -ENODEV; + + hc_buflen = mtd->size; + hc_buf = kmalloc(hc_buflen, GFP_KERNEL); + if (!hc_buf) + return -ENOMEM; + + ret = mtd_read(mtd, 0, hc_buflen, &bytes_read, hc_buf); + + if (bytes_read != hc_buflen) { + ret = -EIO; + goto fail; + } + + /* Check we have what we expect */ + magic = *(const u32 *)hc_buf; + if (RB_MAGIC_HARD != magic) { + ret = -EINVAL; + goto fail; + } + + /* Skip magic */ + buf = hc_buf + sizeof(magic); + buflen = hc_buflen - sizeof(magic); + + /* Populate sysfs */ + ret = -ENOMEM; + hc_kobj = kobject_create_and_add(RB_MTD_HARD_CONFIG, rb_kobj); + if (!hc_kobj) + goto fail; + + /* Locate and publish all known tags */ + for (i = 0; i < ARRAY_SIZE(hc_attrs); i++) { + ret = routerboot_tag_find(buf, buflen, hc_attrs[i].tag_id, + &hc_attrs[i].pld_ofs, &hc_attrs[i].pld_len); + if (ret) { + hc_attrs[i].pld_ofs = hc_attrs[i].pld_len = 0; + continue; + } + + /* Account for skipped magic */ + hc_attrs[i].pld_ofs += sizeof(magic); + + /* Special case RB_ID_WLAN_DATA to prep and create the binary attribute */ + if ((RB_ID_WLAN_DATA == hc_attrs[i].tag_id) && hc_attrs[i].pld_len) { + hc_wlandata_battr.pld_ofs = hc_attrs[i].pld_ofs; + hc_wlandata_battr.pld_len = hc_attrs[i].pld_len; + + ret = sysfs_create_bin_file(hc_kobj, &hc_wlandata_battr.battr); + if (ret) + pr_err(RB_HC_PR_PFX "Could not create %s sysfs entry (%d)\n", + hc_wlandata_battr.battr.attr.name, ret); + } + /* All other tags are published via standard attributes */ + else { + ret = sysfs_create_file(hc_kobj, &hc_attrs[i].kattr.attr); + if (ret) + pr_err(RB_HC_PR_PFX "Could not create %s sysfs entry (%d)\n", + hc_attrs[i].kattr.attr.name, ret); + } + } + + pr_info("MikroTik RouterBOARD hardware configuration sysfs driver v" RB_HARDCONFIG_VER "\n"); + + return 0; + +fail: + kfree(hc_buf); + return ret; +} + +void __exit rb_hardconfig_exit(void) +{ + kobject_put(hc_kobj); + kfree(hc_buf); +} diff --git a/target/linux/generic/files/drivers/platform/mikrotik/routerboot.c b/target/linux/generic/files/drivers/platform/mikrotik/routerboot.c new file mode 100644 index 0000000000..172db02533 --- /dev/null +++ b/target/linux/generic/files/drivers/platform/mikrotik/routerboot.c @@ -0,0 +1,183 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for MikroTik RouterBoot flash data. Common routines. + * + * Copyright (C) 2020 Thibaut VARÈNE <hacks+kernel@slashdirt.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. + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sysfs.h> + +#include "routerboot.h" + +static struct kobject *rb_kobj; + +/** + * routerboot_tag_find() - Locate a given tag in routerboot config data. + * @bufhead: the buffer to look into. Must start with a tag node. + * @buflen: size of bufhead + * @tag_id: the tag identifier to look for + * @pld_ofs: will be updated with tag payload offset in bufhead, if tag found + * @pld_len: will be updated with tag payload size, if tag found + * + * This incarnation of tag_find() does only that: it finds a specific routerboot + * tag node in the input buffer. Routerboot tag nodes are u32 values: + * - The low nibble is the tag identification number, + * - The high nibble is the tag payload length (node excluded) in bytes. + * The payload immediately follows the tag node. Tag nodes are 32bit-aligned. + * The returned pld_ofs will always be aligned. pld_len may not end on 32bit + * boundary (the only known case is when parsing ERD data). + * The nodes are cpu-endian on the flash media. The payload is cpu-endian when + * applicable. Tag nodes are not ordered (by ID) on flash. + * + * Return: 0 on success (tag found) or errno + */ +int routerboot_tag_find(const u8 *bufhead, const size_t buflen, const u16 tag_id, + u16 *pld_ofs, u16 *pld_len) +{ + const u32 *datum, *bufend; + u32 node; + u16 id, len; + int ret; + + if (!bufhead || !tag_id) + return -EINVAL; + + ret = -ENOENT; + datum = (const u32 *)bufhead; + bufend = (const u32 *)(bufhead + buflen); + + while (datum < bufend) { + node = *datum++; + + /* Tag list ends with null node */ + if (!node) + break; + + id = node & 0xFFFF; + len = node >> 16; + + if (tag_id == id) { + if (datum >= bufend) + break; + + if (pld_ofs) + *pld_ofs = (u16)((u8 *)datum - bufhead); + if (pld_len) + *pld_len = len; + + ret = 0; + break; + } + + /* + * The only known situation where len may not end on 32bit + * boundary is within ERD data. Since we're only extracting + * one tag (the first and only one) from that data, we should + * never need to forcefully ALIGN(). Do it anyway, this is not a + * performance path. + */ + len = ALIGN(len, sizeof(*datum)); + datum += len / sizeof(*datum); + } + + return ret; +} + +/** + * routerboot_rle_decode() - Simple RLE (MikroTik variant) decoding routine. + * @in: input buffer to decode + * @inlen: size of in + * @out: output buffer to write decoded data to + * @outlen: pointer to out size when function is called, will be updated with + * size of decoded output on return + * + * MikroTik's variant of RLE operates as follows, considering a signed run byte: + * - positive run => classic RLE + * - negative run => the next -<run> bytes must be copied verbatim + * The API is matched to the lzo1x routines for convenience. + * + * NB: The output buffer cannot overlap with the input buffer. + * + * Return: 0 on success or errno + */ +int routerboot_rle_decode(const u8 *in, size_t inlen, u8 *out, size_t *outlen) +{ + int ret, run, nbytes; // use native types for speed + u8 byte; + + if (!in || (inlen < 2) || !out) + return -EINVAL; + + ret = -ENOSPC; + nbytes = 0; + while (inlen >= 2) { + run = *in++; + inlen--; + + /* Verbatim copies */ + if (run & 0x80) { + /* Invert run byte sign */ + run = ~run & 0xFF; + run++; + + if (run > inlen) + goto fail; + + inlen -= run; + + nbytes += run; + if (nbytes > *outlen) + goto fail; + + /* Basic memcpy */ + while (run-- > 0) + *out++ = *in++; + } + /* Stream of half-words RLE: <run><byte>. run == 0 is ignored */ + else { + byte = *in++; + inlen--; + + nbytes += run; + if (nbytes > *outlen) + goto fail; + + while (run-- > 0) + *out++ = byte; + } + } + + ret = 0; +fail: + *outlen = nbytes; + return ret; +} + +static int __init routerboot_init(void) +{ + rb_kobj = kobject_create_and_add("mikrotik", firmware_kobj); + if (!rb_kobj) + return -ENOMEM; + + return rb_hardconfig_init(rb_kobj); +} + +static void __exit routerboot_exit(void) +{ + rb_hardconfig_exit(); + kobject_put(rb_kobj); // recursive afaict +} + +module_init(routerboot_init); +module_exit(routerboot_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("MikroTik RouterBoot sysfs support"); +MODULE_AUTHOR("Thibaut VARENE"); diff --git a/target/linux/generic/files/drivers/platform/mikrotik/routerboot.h b/target/linux/generic/files/drivers/platform/mikrotik/routerboot.h new file mode 100644 index 0000000000..d2ca41fb1b --- /dev/null +++ b/target/linux/generic/files/drivers/platform/mikrotik/routerboot.h @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Common definitions for MikroTik RouterBoot data. + * + * Copyright (C) 2020 Thibaut VARÈNE <hacks+kernel@slashdirt.org> + */ + + +#ifndef _ROUTERBOOT_H_ +#define _ROUTERBOOT_H_ + +#include <linux/types.h> + +// these magic values are stored in cpu-endianness on flash +#define RB_MAGIC_HARD (('H') | ('a' << 8) | ('r' << 16) | ('d' << 24)) +#define RB_MAGIC_SOFT (('S') | ('o' << 8) | ('f' << 16) | ('t' << 24)) +#define RB_MAGIC_LZOR (('L') | ('Z' << 8) | ('O' << 16) | ('R' << 24)) +#define RB_MAGIC_ERD (('E' << 16) | ('R' << 8) | ('D')) + +#define RB_ART_SIZE 0x10000 + +#define RB_MTD_HARD_CONFIG "hard_config" +#define RB_MTD_SOFT_CONFIG "soft_config" + +int routerboot_tag_find(const u8 *bufhead, const size_t buflen, const u16 tag_id, u16 *pld_ofs, u16 *pld_len); +int routerboot_rle_decode(const u8 *in, size_t inlen, u8 *out, size_t *outlen); + +int __init rb_hardconfig_init(struct kobject *rb_kobj); +void __exit rb_hardconfig_exit(void); + +#endif /* _ROUTERBOOT_H_ */ |