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ipq40xx: use zImage for GL.iNet GL-B1300, GL-S1300 to shrink below 4096k

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In the "ipq40xx: switch to Kernel 5.10" discussion at GitHub,
Adrian noted [0] that these GL.iNet Conexa series devices,
GL-B1300 and GL-S1300 failed their image generation [1] as their gzipped
uImage kernel went above 4096k.

While notifying the vendor about this problem [2], I tested all U-Boot
releases from GL.iNet:
- they really fail to boot kernel above 4096k
- they don't support lzma: "Unimplemented compression type 3"
- but they boot zImage

Using zImage (xz compression) the kernel is 2909k which is
more than a megabyte away from the KERNEL_SIZE := 4096k limit.

The gzip compressed version would be 4116k.

[0]: https://github.com/openwrt/openwrt/pull/4620#issuecomment-932765776
[1]: commit 7b1fa276f5a2 ("ipq40xx: add testing support for kernel 5.10")
[2]: https://forum.gl-inet.com/t/ipq40xx-kernel-size-and-u-boot-v5-10-is-too-big-for-4-mb/17619

Signed-off-by: Szabolcs Hubai <szab.hu@gmail.com>
This commit is contained in:
Szabolcs Hubai 2021-10-10 01:32:30 +02:00 committed by Christian Lamparter
parent fe9e5fbd75
commit 81d694e30b
1 changed files with 2 additions and 2 deletions
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4
target/linux/ipq40xx/image/generic.mk
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@ -495,7 +495,7 @@ endef
TARGET_DEVICES += glinet_gl-ap1300
define Device/glinet_gl-b1300
$(call Device/FitImage)
$(call Device/FitzImage)
DEVICE_VENDOR := GL.iNet
DEVICE_MODEL := GL-B1300
BOARD_NAME := gl-b1300
@ -507,7 +507,7 @@ endef
TARGET_DEVICES += glinet_gl-b1300
define Device/glinet_gl-s1300
$(call Device/FitImage)
$(call Device/FitzImage)
DEVICE_VENDOR := GL.iNet
DEVICE_MODEL := GL-S1300
SOC := qcom-ipq4029