package/boot/uboot-envtools/patches/300-support-env-in-ubivol-chardev.patch

   1 From 6e2630a0fc872d0db34157972f6dc3941f6d66dd Mon Sep 17 00:00:00 2001
   2 From: Daniel Golle <daniel@makrotopia.org>
   3 Date: Mon, 19 May 2014 21:38:01 +0200
   4 Subject: [PATCH] tools/env: add support for env in ubi volume chardev
   5
   6 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
   7 ---
   8  tools/env/Makefile |  5 ++++
   9  tools/env/fw_env.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++-------
  10  2 files changed, 71 insertions(+), 10 deletions(-)
  11
  12 diff --git a/tools/env/Makefile b/tools/env/Makefile
  13 index f5368bc..526d44d 100644
  14 --- a/tools/env/Makefile
  15 +++ b/tools/env/Makefile
  16 @@ -20,6 +20,11 @@ ifeq ($(MTD_VERSION),old)
  17  HOST_EXTRACFLAGS += -DMTD_OLD
  18  endif
  19
  20 +ifeq ($(UBI),y)
  21 +HOST_EXTRACFLAGS += -DUBI
  22 +HOST_LOADLIBES = "-Wl,--gc-sections,-lubi-utils"
  23 +endif
  24 +
  25  always := fw_printenv
  26  hostprogs-y := fw_printenv_unstripped
  27
  28 diff --git a/tools/env/fw_env.c b/tools/env/fw_env.c
  29 index 30d5b03..2217a25 100644
  30 --- a/tools/env/fw_env.c
  31 +++ b/tools/env/fw_env.c
  32 @@ -29,6 +29,9 @@
  33  # include <mtd/mtd-user.h>
  34  #endif
  35
  36 +#ifdef UBI
  37 +# include <libubi.h>
  38 +#endif
  39  #include "fw_env.h"
  40
  41  #include <aes.h>
  42 @@ -809,6 +812,11 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
  43         off_t top_of_range;     /* end of the last block we may use */
  44         loff_t blockstart;      /* running start of the current block -
  45                                    MEMGETBADBLOCK needs 64 bits */
  46 +#ifdef UBI
  47 +       libubi_t *libubi = NULL;/* pointer to libubi struct */
  48 +#else
  49 +       void *libubi = NULL;
  50 +#endif
  51         int rc;
  52
  53         /*
  54 @@ -914,7 +922,30 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
  55                         continue;
  56                 }
  57
  58 -               if (mtd_type != MTD_ABSENT) {
  59 +#ifdef UBI
  60 +               if (mtd_type == MTD_UBIVOLUME) {
  61 +                       struct ubi_vol_info volinfo;
  62 +                       libubi = libubi_open();
  63 +                       if (libubi)
  64 +                               rc = ubi_get_vol_info(libubi,
  65 +                                       DEVNAME(dev_current), &volinfo);
  66 +                       if (libubi && !rc) {
  67 +                               erasesize = volinfo.leb_size;
  68 +                               int leb = blockstart / erasesize;
  69 +                               if (volinfo.type != UBI_STATIC_VOLUME)
  70 +                                       rc = ubi_leb_change_start(libubi, fd,
  71 +                                               leb, erasesize);
  72 +                               else
  73 +                                       rc = ubi_update_start(libubi, fd,
  74 +                                               erasesize);
  75 +                       }
  76 +                       if (libubi && rc) {
  77 +                               libubi_close(libubi);
  78 +                               libubi = NULL;
  79 +                       }
  80 +               }
  81 +#endif
  82 +               if (!libubi && mtd_type != MTD_ABSENT) {
  83                         erase.start = blockstart;
  84                         ioctl(fd, MEMUNLOCK, &erase);
  85                         /* These do not need an explicit erase cycle */
  86 @@ -931,7 +962,8 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
  87                         fprintf (stderr,
  88                                  "Seek error on %s: %s\n",
  89                                  DEVNAME (dev), strerror (errno));
  90 -                       return -1;
  91 +                       processed = -1;
  92 +                       goto out;
  93                 }
  94
  95  #ifdef DEBUG
  96 @@ -941,10 +973,11 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
  97                 if (write (fd, data + processed, erasesize) != erasesize) {
  98                         fprintf (stderr, "Write error on %s: %s\n",
  99                                  DEVNAME (dev), strerror (errno));
 100 -                       return -1;
 101 +                       processed = -1;
 102 +                       goto out;
 103                 }
 104
 105 -               if (mtd_type != MTD_ABSENT)
 106 +               if (!libubi && mtd_type != MTD_ABSENT)
 107                         ioctl(fd, MEMLOCK, &erase);
 108
 109                 processed  += erasesize;
 110 @@ -955,6 +988,11 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
 111         if (write_total > count)
 112                 free (data);
 113
 114 +out:
 115 +#ifdef UBI
 116 +       if (libubi)
 117 +               libubi_close(libubi);
 118 +#endif
 119         return processed;
 120  }
 121
 122 @@ -1066,12 +1104,8 @@ static int flash_read (int fd)
 123
 124         if (S_ISCHR(st.st_mode)) {
 125                 rc = ioctl(fd, MEMGETINFO, &mtdinfo);
 126 -               if (rc < 0) {
 127 -                       fprintf(stderr, "Cannot get MTD information for %s\n",
 128 -                               DEVNAME(dev_current));
 129 -                       return -1;
 130 -               }
 131 -               if (mtdinfo.type != MTD_NORFLASH &&
 132 +               if (!rc &&
 133 +                   mtdinfo.type != MTD_NORFLASH &&
 134                     mtdinfo.type != MTD_NANDFLASH &&
 135                     mtdinfo.type != MTD_DATAFLASH &&
 136                     mtdinfo.type != MTD_UBIVOLUME) {
 137 @@ -1079,6 +1113,28 @@ static int flash_read (int fd)
 138                                  mtdinfo.type, DEVNAME(dev_current));
 139                         return -1;
 140                 }
 141 +#ifdef UBI
 142 +               if (rc) {
 143 +                       libubi_t *libubi;
 144 +                       struct ubi_vol_info volinfo;
 145 +                       libubi = libubi_open();
 146 +                       if (!libubi)
 147 +                               return -ENOMEM;
 148 +
 149 +                       rc = ubi_get_vol_info(libubi, DEVNAME(dev_current),
 150 +                                               &volinfo);
 151 +                       if (rc) {
 152 +                               libubi_close(libubi);
 153 +                               return -ENODEV;
 154 +                       }
 155 +                       memset(&mtdinfo, 0, sizeof(mtdinfo));
 156 +                       mtdinfo.type = MTD_UBIVOLUME;
 157 +                       mtdinfo.size = volinfo.data_bytes;
 158 +                       mtdinfo.erasesize = volinfo.leb_size;
 159 +                       mtdinfo.writesize = volinfo.leb_size;
 160 +                       libubi_close(libubi);
 161 +               }
 162 +#endif
 163         } else {
 164                 memset(&mtdinfo, 0, sizeof(mtdinfo));
 165                 mtdinfo.type = MTD_ABSENT;
 166 --
 167 2.0.0
 168