U-Boot: First variable in auxiliary environment can not be imported

[wkz]

Current Behavior

At boot, U-Boot will import a small set of variables from /mnt/aux/uboot.env, primarily to determine the boot order. It seems like the first KEY=val pair in this file can not be imported.

Device 1

ethact is the first variable in the serialized environment file, and can not be imported, while the following variable can be:

(ixboot) load ${devtype} ${devnum}:${auxpart} ${loadaddr} /uboot.env
(ixboot) md.b ${loadaddr} 100
00800000: 2b 44 23 14 65 74 68 61 63 74 3d 65 32 38 00 42  +D#.ethact=e28.B
00800010: 4f 4f 54 5f 6e 65 74 5f 4c 45 46 54 3d 33 00 42  OOT_net_LEFT=3.B
00800020: 4f 4f 54 5f 70 72 69 6d 61 72 79 5f 4c 45 46 54  OOT_primary_LEFT
00800030: 3d 33 00 42 4f 4f 54 5f 73 65 63 6f 6e 64 61 72  =3.BOOT_secondar
00800040: 79 5f 4c 45 46 54 3d 33 00 42 4f 4f 54 5f 4f 52  y_LEFT=3.BOOT_OR
00800050: 44 45 52 3d 6e 65 74 00 00 64 61 72 79 20 6e 65  DER=net..dary ne
00800060: 74 00 00 63 74 3d 65 32 38 00 00 ff ff ff ff ff  t..ct=e28.......
00800070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
00800080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
00800090: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
(ixboot) setenv ethact FOOBARNOTSET
(ixboot) env import -b ${loadaddr} ${filesize} ethact
(ixboot) printenv ethact
ethact=FOOBARNOTSET
(ixboot) setenv BOOT_net_LEFT FOOBARNOTSET
(ixboot) env import -b ${loadaddr} ${filesize} BOOT_net_LEFT
(ixboot) printenv BOOT_net_LEFT
BOOT_net_LEFT=3

Device 2

On this system, the order of the two is reversed, and now BOOT_net_LEFT can not be imported, since it now is the first variable in the file:

(ixboot) load ${devtype} ${devnum}:${auxpart} ${loadaddr} /uboot.env
16384 bytes read in 9 ms (1.7 MiB/s)
(ixboot) md.b ${loadaddr} 100
00800000: 9e 0d 03 13 42 4f 4f 54 5f 6e 65 74 5f 4c 45 46  ....BOOT_net_LEF
00800010: 54 3d 31 00 65 74 68 61 63 74 3d 65 32 38 00 42  T=1.ethact=e28.B
00800020: 4f 4f 54 5f 73 65 63 6f 6e 64 61 72 79 5f 4c 45  OOT_secondary_LE
00800030: 46 54 3d 33 00 42 4f 4f 54 5f 70 72 69 6d 61 72  FT=3.BOOT_primar
00800040: 79 5f 4c 45 46 54 3d 33 00 42 4f 4f 54 5f 4f 52  y_LEFT=3.BOOT_OR
00800050: 44 45 52 3d 6e 65 74 00 00 72 79 20 6e 65 74 00  DER=net..ry net.
00800060: 00 00 00 72 79 00 00 65 74 00 00 ff ff ff ff ff  ...ry..et.......
00800070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
00800080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
00800090: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
008000f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
(ixboot) setenv ethact FOOBARNOTSET
(ixboot) env import -b ${loadaddr} ${filesize} ethact
(ixboot) printenv ethact
ethact=e28
(ixboot) setenv BOOT_net_LEFT FOOBARNOTSET
(ixboot) env import -b ${loadaddr} ${filesize} BOOT_net_LEFT
(ixboot) printenv BOOT_net_LEFT
BOOT_net_LEFT=FOOBARNOTSET

Expected Behavior

The first variable should also be possible to import.

Steps To Reproduce

No response

Additional information

No response