Architecturally, there's nothing preventing compressed images from
working. Bootloaders built with support for the various compression
methods can decompress and run the kernel. In practice, many
bootloaders do not support compressed images, but kernels for those
boards should just not be compressed.
Tested on an MT7688 with U-Boot doing LZMA decompression of uImage.
Signed-off-by: George Hilliard <[email protected]>
---
arch/mips/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 4a5f5b0ee9a9..b286fbbd9699 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -619,6 +619,7 @@ config RALINK
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_SUPPORTS_MIPS16
+ select SYS_SUPPORTS_ZBOOT
select SYS_HAS_EARLY_PRINTK
select CLKDEV_LOOKUP
select ARCH_HAS_RESET_CONTROLLER
--
2.21.0
Actually, I just thought about this: do I need to do a `make
olddefconfig` for all the ralink-based defconfigs to let them choose a
default compression method? (I'm somewhat new to kernel
contributions, sorry if this is obvious.)
Thanks,
George
On Thu, Mar 21, 2019 at 8:08 AM George Hilliard
<[email protected]> wrote:
>
> Architecturally, there's nothing preventing compressed images from
> working. Bootloaders built with support for the various compression
> methods can decompress and run the kernel. In practice, many
> bootloaders do not support compressed images, but kernels for those
> boards should just not be compressed.
>
> Tested on an MT7688 with U-Boot doing LZMA decompression of uImage.
>
> Signed-off-by: George Hilliard <[email protected]>
> ---
> arch/mips/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> index 4a5f5b0ee9a9..b286fbbd9699 100644
> --- a/arch/mips/Kconfig
> +++ b/arch/mips/Kconfig
> @@ -619,6 +619,7 @@ config RALINK
> select SYS_SUPPORTS_32BIT_KERNEL
> select SYS_SUPPORTS_LITTLE_ENDIAN
> select SYS_SUPPORTS_MIPS16
> + select SYS_SUPPORTS_ZBOOT
> select SYS_HAS_EARLY_PRINTK
> select CLKDEV_LOOKUP
> select ARCH_HAS_RESET_CONTROLLER
> --
> 2.21.0
>