[PATCH] ARM: keystone2: enable initrd fixup for LPAE addressing

[Tom Rini]

On Tue, Feb 11, 2020 at 09:25:52AM +0530, Lokesh Vutla wrote:

> From: Tero Kristo <t-kristo at ti.com>
> 
> Keystone2 u-boot loads the initrd image into non-LPAE addressed memory
> but linux kernel is running in LPAE. This causes a conflict as kernel
> detects that non-memory address is passed and kernel ignores initrd.
> There is an existing fixup logic to modify the address in the proper
> configuration, but this is disabled at the moment. Enable the fixup
> by setting the env variable for this so that initrd can be used
> properly.
> 
> Signed-off-by: Tero Kristo <t-kristo at ti.com>
> Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
> ---
> - This fixes boot on k2g platforms.
> 
>  include/configs/ti_armv7_keystone2.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/configs/ti_armv7_keystone2.h b/include/configs/ti_armv7_keystone2.h
> index ba12428dbe..1b014c1022 100644
> --- a/include/configs/ti_armv7_keystone2.h
> +++ b/include/configs/ti_armv7_keystone2.h
> @@ -213,6 +213,7 @@
>  	"tftp_root=/\0"							\
>  	"nfs_root=/export\0"						\
>  	"mem_lpae=1\0"							\
> +	"uinitrd_fixup=1\0"						\
>  	"addr_ubi=0x82000000\0"						\
>  	"addr_secdb_key=0xc000000\0"					\
>  	"name_kern=zImage\0"						\

OK, hold up.  Why is any of this code needed and can't the normal
bootm_size / bootm_low / etc as documented in the README enforce these
constraints?  Thanks!

-- 
Tom
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