arch/arm/mach-mt8127/include/mach/env.h

   1 #ifndef __ENV_H__
   2 #define __ENV_H__
   3 /*#include "partition_define.h"*/
   4 #include <linux/errno.h>        /* error codes */
   5 #include <linux/types.h>        /* size_t */
   6 #include <linux/proc_fs.h>  /*proc*/
   7 #include <linux/ioctl.h> /*ioctl*/
   8 #include <linux/module.h>
   9
  10 #define CFG_ENV_SIZE 0x4000 //(16KB)
  11 #define CFG_ENV_OFFSET 0x20000  //(128KB)
  12
  13 #define CFG_ENV_DATA_SIZE (CFG_ENV_SIZE-sizeof(g_env.checksum)-sizeof(g_env.sig)-sizeof(g_env.sig_1))
  14 #define CFG_ENV_DATA_OFFSET (sizeof(g_env.sig))
  15 #define CFG_ENV_SIG_1_OFFSET (CFG_ENV_SIZE - sizeof(g_env.checksum)-sizeof(g_env.sig_1))
  16 #define CFG_ENV_CHECKSUM_OFFSET (CFG_ENV_SIZE - sizeof(g_env.checksum))
  17
  18 #define ENV_PART PART_MISC
  19
  20 #define ENV_SIG "ENV_v1"
  21
  22 #define DATA_FREE_SIZE_TH_DEFAULT (50*1024*1024)
  23
  24 #ifdef MTK_SHARED_SDCARD
  25
  26 #define LIMIT_SDCARD_SIZE
  27
  28 extern long long data_free_size_th;
  29 EXPORT_SYMBOL(data_free_size_th);
  30
  31 #endif
  32
  33 struct env_struct {
  34         char sig_head[8];
  35         char *env_data;
  36         char sig_tail[8];
  37         int checksum;
  38 };
  39
  40 #define ENV_MAGIC        'e'
  41 #define ENV_READ                _IOW(ENV_MAGIC, 1, int)
  42 #define ENV_WRITE               _IOW(ENV_MAGIC, 2, int)
  43
  44 struct env_ioctl {
  45         char *name;
  46         int name_len;
  47         char *value;
  48         int value_len;
  49 };
  50 //extern void env_init(loff_t env_part_addr);
  51 //#ifdef MTK_EMMC_SUPPORT
  52 //extern int eMMC_rw_x(loff_t addr,u32  *buffer, int host_num, int iswrite,u32 totalsize, int transtype, Region part);
  53 //#endif
  54 extern int set_env(char *name,char *value);
  55 extern char *get_env(const char *name);
  56
  57 #endif