Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1304702

Re: [Question] Any restriction for the location of initramdisk?

Show all headers | View raw

Hi Jon,

2016-01-08 19:22 GMT+09:00 Jon Medhurst (Tixy) <tixy@linaro.org>:
> On Fri, 2016-01-08 at 16:16 +0900, Masahiro Yamada wrote:
>> Hi.
>>
>>
>> I know DTB should be located within the reach of the kernel
>> so that the kernel can get access to it at the early boot stage.
>> In other words, DTB should be put in the low memory area.
>>
>> Does initramdisk has the similar restriction?
>
> I assume so, as that's what Documentation/arm/Booting says ...
>
>
> 5. Load initramfs.
> ------------------
>
> Existing boot loaders:          OPTIONAL
> New boot loaders:               OPTIONAL
>
> If an initramfs is in use then, as with the dtb, it must be placed in
> a region of memory where the kernel decompressor will not overwrite it
> while also with the region which will be covered by the kernel's
> low-memory mapping.
>
> A safe location is just above the device tree blob which itself will
> be loaded just above the 128MiB boundary from the start of RAM as
> recommended above.


Uh, the document states that clearly.

Thanks!




-- 
Best Regards
Masahiro Yamada

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

[Question] Any restriction for the location of initramdisk? Masahiro Yamada <yamada.masahiro@socionext.com> - 2016-01-08 08:20 +0100
  Re: [Question] Any restriction for the location of initramdisk? "Jon Medhurst (Tixy)" <tixy@linaro.org> - 2016-01-08 11:30 +0100
    Re: [Question] Any restriction for the location of initramdisk? Masahiro Yamada <yamada.masahiro@socionext.com> - 2016-01-08 17:20 +0100

csiph-web