mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-10 23:24:38 +00:00
d7a2c7ff75
To quote the author:
This little series corrects a problem I noticed with arm64 images,
where the kernel is not recognised if compression is used:
U-Boot> tftp image.fit
Using ethernet@7d580000 device
TFTP from server 192.168.4.7; our IP address is 192.168.4.147
Filename 'image.fit'.
Load address: 0x1000000
Loading: ################################################## 23 MiB
20.5 MiB/s
done
Bytes transferred = 24118272 (1700400 hex)
U-Boot> bootm
## Loading kernel from FIT Image at 01000000 ...
Using 'conf-768' configuration
Trying 'kernel' kernel subimage
Description: Linux
Type: Kernel Image (no loading done)
Compression: gzip compressed
Data Start: 0x01000120
Data Size: 13662338 Bytes = 13 MiB
Verifying Hash Integrity ... OK
Bad Linux ARM64 Image magic!
With this series:
U-Boot> tftp 20000000 image.fit
Using ethernet@7d580000 device
TFTP from server 192.168.4.7; our IP address is 192.168.4.147
Filename 'image.fit'.
Load address: 0x20000000
Loading: ################################################## 23.5 MiB
20.8 MiB/s
done
Bytes transferred = 24642560 (1780400 hex)
U-Boot> bootm 0x20000000
## Loading kernel from FIT Image at 20000000 ...
Using 'conf-768' configuration
Trying 'kernel' kernel subimage
Description: Linux
Type: Kernel Image (no loading done)
Compression: zstd compressed
Data Start: 0x20000120
Data Size: 14333475 Bytes = 13.7 MiB
Verifying Hash Integrity ... OK
Using kernel load address 80000
## Loading fdt from FIT Image at 20000000 ...
Using 'conf-768' configuration
Trying 'fdt-768' fdt subimage
Description: Raspberry Pi 4 Model B
Type: Flat Device Tree
Compression: zstd compressed
Data Start: 0x215f820c
Data Size: 9137 Bytes = 8.9 KiB
Architecture: AArch64
Verifying Hash Integrity ... OK
Uncompressing Flat Device Tree to 3aff3010
Booting using the fdt blob at 0x3aff3010
Working FDT set to 3aff3010
Uncompressing Kernel Image (no loading done) to 80000
Moving Image from 0x80000 to 0x200000, end=2b00000
Using Device Tree in place at 000000003aff3010, end 000000003afff4c4
Working FDT set to 3aff3010
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd083]
The problem is that the arm64 magic is checked before the image is
decompressed. However this is only part of it. The kernel_noload image
type doesn't work with compression, since the kernel is not loaded. So
this series deals with that by using an lmb-allocated buffer for the
uncompressed kernel.
Another issue is that the arm64 handling is done too early, before the
image is loaded. This series moves it to after loading, so that
compression can be handled.
A patch is included to show the kernel load-address, so it is easy to
see what is going on.
One annoying feature of arm64 is that the image is often copied to
another address. It might be possible for U-Boot to figure that out
earlier and decompress it to the right place, but perhaps not.
With all of this it should be possible to boot a compressed kernel on
any of the 990 arm64 boards supported by Linux, although I have only
tested two.
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|---|---|---|
| .. | ||
| android_ab.c | ||
| boot_fit.c | ||
| bootdev-uclass.c | ||
| bootflow.c | ||
| bootflow_internal.h | ||
| bootflow_menu.c | ||
| bootm.c | ||
| bootm_os.c | ||
| bootmeth-uclass.c | ||
| bootmeth_cros.c | ||
| bootmeth_cros.h | ||
| bootmeth_efi.c | ||
| bootmeth_efi_mgr.c | ||
| bootmeth_extlinux.c | ||
| bootmeth_pxe.c | ||
| bootmeth_qfw.c | ||
| bootmeth_sandbox.c | ||
| bootmeth_script.c | ||
| bootretry.c | ||
| bootstd-uclass.c | ||
| cedit.c | ||
| common_fit.c | ||
| expo.c | ||
| expo_build.c | ||
| fdt_region.c | ||
| fdt_simplefb.c | ||
| fdt_support.c | ||
| image-android-dt.c | ||
| image-android.c | ||
| image-board.c | ||
| image-cipher.c | ||
| image-fdt.c | ||
| image-fit-sig.c | ||
| image-fit.c | ||
| image-host.c | ||
| image-pre-load.c | ||
| image-sig.c | ||
| image.c | ||
| Kconfig | ||
| Makefile | ||
| prog_boot.c | ||
| pxe_utils.c | ||
| scene.c | ||
| scene_internal.h | ||
| scene_menu.c | ||
| scene_textline.c | ||
| vbe.c | ||
| vbe_request.c | ||
| vbe_simple.c | ||
| vbe_simple.h | ||
| vbe_simple_fw.c | ||
| vbe_simple_os.c | ||