[PATCH 0/2] Add support for kexec-hardboot to Nexus 7 kernel
tim.gardner at canonical.com
Wed Nov 28 12:52:41 UTC 2012
On 11/22/2012 12:45 PM, Vojtech Bocek wrote:
> These patches are for Nexus 7 kernel.
> These two patches allows Nexus 7's kernel to be booted
> via kexec-hardboot method. In short, kexec-hardboot
> is like normal exec, but does full reboot of the device,
> so that drivers are properly initialized. Normal kexec
> results into freeze on Nexus 7.
> Ported from Jens Andersen <jens.andersen at gmail.com>'s
> kernel for Asus TF201 .
>  N7 kernel: http://kernel.ubuntu.com/git?p=hwe/ubuntu-nexus7.git
>  Hardboot: http://forum.xda-developers.com/showthread.php?t=1266827
>  Original repository: http://git.io/EXpn2A
> Vojtech Bocek (2):
> UBUNTU: Enable caching and buffering of whole RAM in the decompressor
> UBUNTU: Support copying of atags in the decompressor.
> arch/arm/boot/compressed/Makefile | 3 +++
> arch/arm/boot/compressed/head.S | 50 +++++++++++++++++++++++++++++++++++++++++++++++++-
> arch/arm/boot/compressed/misc.c | 22 ++++++++++++++++++++++
> arch/arm/mach-tegra/include/mach/memory.h | 4 ++++
> 4 files changed, 78 insertions(+), 1 deletion(-)
I've asked Jani Monoses to review these patches since there is ARM
assembler in them that I'm not competent to review.
What deficiency in the boot process do these patches address ? While
kexec _is_ cool, I was under the impression that the existing N7
bootloader was sufficient to boot kernels from a variety of sources.
Tim Gardner tim.gardner at canonical.com
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