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![]() the last value acceptable value for offset is last_usable_lba + 1 and not last_usable_lba - 1 issue found with SDCARD partition commands on u-boot 2015.10 but this part of code don't change 1- create GPT partion on all the card > gpt write mmc 0 name=test,start=0,size=0 > part list mmc 0 Partition Map for MMC device 0 -- Partition Type: EFI Part Start LBA End LBA Name Attributes Type GUID Partition GUID 1 0x00000022 0x003a9fde "test" attrs: 0x0000000000000000 type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7 type: data guid: b710eb04-45b9-e94a-8d0b-21458d596f54 => Start = 0x22*512 = 0x4400 => Size = (0x003a9fde-0x22+1) * 512 = 0x753F7A00 2- try to recreate the same partition with the next command (block size:512 bytes = 0x200) > gpt write mmc 0 name=test,start=0x4400,size=0x753F7A00 Writing GPT: Partitions layout exceds disk size > gpt write mmc 0 name=test,start=0x4400,size=0x753F7800 Writing GPT: Partitions layout exceds disk size > gpt write mmc 0 name=test,start=0x4400,size=0x753F7600 Writing GPT: success! Partition Map for MMC device 0 -- Partition Type: EFI Part Start LBA End LBA Name Attributes Type GUID Partition GUID 1 0x00000022 0x003a9fdc "test" attrs: 0x0000000000000000 type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7 type: data guid: 36ec30ef-7ca4-cd48-97cd-ea9fb95185d0 the max LBA when the size is indicated (0x003a9fdc) is lower than when u-boot compute the max allowed value with size=0 (0x003a9fde) in the code : /* partition ending lba */ if ((i == parts - 1) && (partitions[i].size == 0)) /* extend the last partition to maximuim */ gpt_e[i].ending_lba = gpt_h->last_usable_lba; else gpt_e[i].ending_lba = cpu_to_le64(offset - 1); so offset = gpt_h->last_usable_lba + 1 is acceptable ! but the test (offset >= last_usable_lba) cause the error END Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>disk: part_efi: fix check of the max partition size the last value acceptable value for offset is (last_usable_lba + 1) and not (last_usable_lba - 1) issue found with SDCARD partition commands on u-boot 2015.10 but this part of code don't change 1- I create GPT partion on all the card (start and size undefined) > gpt write mmc 0 name=test,start=0,size=0 > part list mmc 0 Partition Map for MMC device 0 -- Partition Type: EFI Part Start LBA End LBA Name Attributes Type GUID Partition GUID 1 0x00000022 0x003a9fde "test" attrs: 0x0000000000000000 type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7 type: data guid: b710eb04-45b9-e94a-8d0b-21458d596f54 => Start = 0x22*512 = 0x4400 => Size = (0x003a9fde-0x22+1) * 512 = 0x753F7A00 2- I try to recreate the same partition with the command gpt write and with start and size values (block size:512 bytes = 0x200) > gpt write mmc 0 name=test,start=0x4400,size=0x753F7A00 Writing GPT: Partitions layout exceds disk size > gpt write mmc 0 name=test,start=0x4400,size=0x753F7800 Writing GPT: Partitions layout exceds disk size > gpt write mmc 0 name=test,start=0x4400,size=0x753F7600 Writing GPT: success! I check the partition created : > part list mmc 0 Partition Map for MMC device 0 -- Partition Type: EFI Part Start LBA End LBA Name Attributes Type GUID Partition GUID 1 0x00000022 0x003a9fdc "test" attrs: 0x0000000000000000 type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7 type: data guid: 36ec30ef-7ca4-cd48-97cd-ea9fb95185d0 => but the max LBA when the size is indicated (0x003a9fdc) is lower than when u-boot compute the max allowed value with size=0 (0x003a9fde) 3- in the code, just after my patch, line 446 /* partition ending lba */ if ((i == parts - 1) && (partitions[i].size == 0)) /* extend the last partition to maximuim */ gpt_e[i].ending_lba = gpt_h->last_usable_lba; else gpt_e[i].ending_lba = cpu_to_le64(offset - 1); so offset = gpt_h->last_usable_lba + 1 is acceptable ! (it the value used when size is 0) but today the test (offset >= last_usable_lba) cause the error my patch only solve this issue END Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com> |
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.. | ||
Makefile | ||
part_amiga.c | ||
part_amiga.h | ||
part_dos.c | ||
part_dos.h | ||
part_efi.c | ||
part_iso.c | ||
part_iso.h | ||
part_mac.c | ||
part_mac.h | ||
part.c |