Mikhail Kshevetskiy 6a1f8c8973 cmd: gpt: fix partition search boundaries ...

GPT disk partition with max available number (ex: /dev/mmcblk128) can't
be used from U-Boot. Here is an example:

  => mmc part

  Partition Map for mmc device 0  --   Partition Type: EFI

  Part	Start LBA	End LBA		Name
	Attributes
	Type GUID
	Partition GUID
  1	0x00001000	0x000013ff	"env1"
	attrs:	0x0000000000000000
	type:	0fc63daf-8483-4772-8e79-3d69d8477de4
	guid:	5452574f-2211-4433-5566-778899aabb02
  2	0x00001400	0x000017ff	"env2"
	attrs:	0x0000000000000000
	type:	0fc63daf-8483-4772-8e79-3d69d8477de4
	guid:	5452574f-2211-4433-5566-778899aabb03
  .................
  8	0x00158000	0x0034bfff	"apps"
	attrs:	0x0000000000000000
	type:	0fc63daf-8483-4772-8e79-3d69d8477de4
	guid:	5452574f-2211-4433-5566-778899aabb09
  128	0x00000420	0x00000fff	"fip"
	attrs:	0x0000000000000000
	type:	c12a7328-f81f-11d2-ba4b-00a0c93ec93b
	guid:	5452574f-2211-4433-5566-778899aabb01

  => gpt setenv mmc 0 fip
  error!
  => gpt setenv mmc 0 apps
  success!

The error is caused by invalid boundary checks. This patch fixes an
issue.

Fixes: 12fc1f3bb2 ("cmd: gpt: add eMMC and GPT support")
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Acked-by: Quentin Schulz <quentin.schulz@cherry.de>

2026-02-04 10:30:55 -06:00

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