target/linux/bcm53xx/patches-4.14/900-mtd-bcm47xxpart-add-device-specific-workarounds.patch

   1 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   2 Subject: [PATCH] mtd: bcm47xxpart: add device specific workarounds
   3 MIME-Version: 1.0
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   6
   7 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
   8 ---
   9
  10 --- a/drivers/mtd/bcm47xxpart.c
  11 +++ b/drivers/mtd/bcm47xxpart.c
  12 @@ -15,6 +15,7 @@
  13  #include <linux/slab.h>
  14  #include <linux/mtd/mtd.h>
  15  #include <linux/mtd/partitions.h>
  16 +#include <linux/of.h>
  17
  18  #include <uapi/linux/magic.h>
  19
  20 @@ -134,6 +135,36 @@ static int bcm47xxpart_parse(struct mtd_
  21                         break;
  22                 }
  23
  24 +               /*
  25 +                * Device specific workarounds (hacks). We should use DT to
  26 +                * define partitions but we need a working TRX firmware splitter
  27 +                * first.
  28 +                */
  29 +               if (of_machine_is_compatible("asus,rt-ac87u") && offset == 0x7ec0000) {
  30 +                       /*
  31 +                        * "asus" partition uses JFFS2 which we don't detect and
  32 +                        * we don't want to as this could affect other devices.
  33 +                        */
  34 +                       bcm47xxpart_add_part(&parts[curr_part++], "asus", offset, MTD_WRITEABLE);
  35 +                       continue;
  36 +               } else  if (of_machine_is_compatible("tplink,archer-c5-v2") && offset == 0xe40000) {
  37 +                       /*
  38 +                        * There is a whole set of partitions (not even listed
  39 +                        * by original firmware): "default-mac", "pin",
  40 +                        * "partition-table", etc.
  41 +                        */
  42 +                       bcm47xxpart_add_part(&parts[curr_part++], "tplink", offset, MTD_WRITEABLE);
  43 +                       continue;
  44 +               } else  if (of_machine_is_compatible("tplink,archer-c9-v1") && offset == 0xe40000) {
  45 +                       /*
  46 +                        * There is a whole set of partitions (not even listed
  47 +                        * by original firmware): "default-mac", "pin",
  48 +                        * "partition-table", etc.
  49 +                        */
  50 +                       bcm47xxpart_add_part(&parts[curr_part++], "tplink", offset, MTD_WRITEABLE);
  51 +                       continue;
  52 +               }
  53 +
  54                 /* Read beginning of the block */
  55                 err = mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ,
  56                                &bytes_read, (uint8_t *)buf);