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| author | Daniel Golle <daniel@makrotopia.org> | 2022-07-13 04:30:00 +0100 |
|---|---|---|
| committer | Daniel Golle <daniel@makrotopia.org> | 2022-07-13 11:38:57 +0100 |
| commit | 7659ee1e2786ccc78656362d7007e4c402c939b7 (patch) | |
| tree | 39e6a5fafa00ed5520939bc30db22fa9fa7cc5ab /package/boot/uboot-mediatek | |
| parent | 9f1d6223289b5571ddc77c0e5327ab51137199d9 (diff) | |
| download | upstream-7659ee1e2786ccc78656362d7007e4c402c939b7.tar.gz upstream-7659ee1e2786ccc78656362d7007e4c402c939b7.tar.bz2 upstream-7659ee1e2786ccc78656362d7007e4c402c939b7.zip | |
uboot-mediatek: add support for UBI EOF marker
Let U-Boot handle free space in UBI partitions by recognizing the EOF
marker OpenWrt is using as well for that purpose.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Diffstat (limited to 'package/boot/uboot-mediatek')
| -rw-r--r-- | package/boot/uboot-mediatek/patches/600-ubi-detect-eof-marker.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/package/boot/uboot-mediatek/patches/600-ubi-detect-eof-marker.patch b/package/boot/uboot-mediatek/patches/600-ubi-detect-eof-marker.patch new file mode 100644 index 0000000000..ab5a5f1611 --- /dev/null +++ b/package/boot/uboot-mediatek/patches/600-ubi-detect-eof-marker.patch @@ -0,0 +1,51 @@ +--- a/drivers/mtd/ubi/attach.c 2022-07-11 14:42:58.000000000 +0100 ++++ b/drivers/mtd/ubi/attach.c 2022-06-12 16:04:56.623658788 +0100 +@@ -802,6 +802,13 @@ + return err; + } + ++static bool ec_hdr_has_eof(struct ubi_ec_hdr *ech) ++{ ++ return ech->padding1[0] == 'E' && ++ ech->padding1[1] == 'O' && ++ ech->padding1[2] == 'F'; ++} ++ + /** + * scan_peb - scan and process UBI headers of a PEB. + * @ubi: UBI device description object +@@ -832,9 +839,21 @@ + return 0; + } + +- err = ubi_io_read_ec_hdr(ubi, pnum, ech, 0); +- if (err < 0) +- return err; ++ if (!ai->eof_found) { ++ err = ubi_io_read_ec_hdr(ubi, pnum, ech, 0); ++ if (err < 0) ++ return err; ++ ++ if (ec_hdr_has_eof(ech)) { ++ pr_notice("UBI: EOF marker found, PEBs from %d will be erased\n", ++ pnum); ++ ai->eof_found = true; ++ } ++ } ++ ++ if (ai->eof_found) ++ err = UBI_IO_FF_BITFLIPS; ++ + switch (err) { + case 0: + break; +--- a/drivers/mtd/ubi/ubi.h 2022-07-11 14:42:58.000000000 +0100 ++++ b/drivers/mtd/ubi/ubi.h 2022-06-12 16:04:56.626992171 +0100 +@@ -745,6 +745,7 @@ + int mean_ec; + uint64_t ec_sum; + int ec_count; ++ bool eof_found; + struct kmem_cache *aeb_slab_cache; + }; + |