[U-Boot] [PATCH v3 7/8] ARM: mx6: Change the FDT loading address to avoid overlaping
Stefano Babic
sbabic at denx.de
Fri Jan 3 15:34:52 CET 2014
On 16/12/2013 23:44, Otavio Salvador wrote:
> This patch fixes allow for the DeviceTree and initrd relocation fixing
> the boot of FSL 3.10.9-1.0.0-alpha kernel.
>
> This changes following boards:
>
> - mx6sabreauto
> - mx6sabresd
> - wandboard
> - udoo
> - nitrogen6x
> - cgtqmx6eval
>
> The reasoning, as explained by Hui Liu, is:
>
> ,----
> | The FDT blob will be placed at DDR physical addr: 0x11000000. When Linux kernel
> | Boot up, it will decompress the compressed kernel image and place the decompressed
> | kernel image at the low end of the DDR memory and start running from it. If the
> | decompressed kernel image is bigger for example than 16M, it may over written the
> | fdt blob which u-boot loaded to the DDR memory @0x11000000 with fdt_addr=0x11000000
> |
> | To expand the fdt_addr from 0x11000000 to 0x18000000, which can avoid the override
> | Since we will not likely have one kernel image larger than 128MB.
> `----
>
> Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
> ---
Applied to u-boot-imx, thanks !
Best regards,
Stefano Babic
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