[PATCH CFT] ARM:SHMOBILE: Enable AUTO_ZRELADDR by default

[PATCH CFT] ARM:SHMOBILE: Enable AUTO_ZRELADDR by default

[panchaxari]

This patch enables AUTO_ZRELADDR as default config to Renasas R-Mobile and
SH-Mobile platforms.

AUTO_ZRELADDR config enables auto calculation of the decompressed kernel image
address. AUTO_ZRELADDR config is mutually exclusive to ZBOOT_ROM, and also
assumes zImage to be loaded in the first 128MiB from start of memory.

CFT::Call For Testing

Requesting maintainers of R-Mobile and SH-Mobile platforms to evaluate the
changes on the board and comment, as I dont have the board for testing, and
also requesting an ACK.

Signed-off-by: panchaxari <panchaxari.prasannamurthy@linaro.org>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <damm@opensource.se>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-sh at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
---
Below lkml link is a quoting by Russell which clears the concept of PHYS_VIRT
and ZRELADDR
---------------------------------------------------

https://lkml.org/lkml/2011/10/14/434

-------------------------------------------------
---
 arch/arm/Kconfig |    1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 8e668e2..077ef9d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -674,6 +674,7 @@ config ARCH_MSM
 config ARCH_SHMOBILE
 	bool "Renesas SH-Mobile / R-Mobile"
 	select ARM_PATCH_PHYS_VIRT
+	select AUTO_ZRELADDR
 	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
 	select HAVE_ARM_SCU if SMP
-- 
1.7.10.4

[PATCH CFT] ARM:SHMOBILE: Enable AUTO_ZRELADDR by default

[Magnus Damm]

On Thu, Jan 9, 2014 at 5:31 PM, panchaxari
<panchaxari.prasannamurthy@linaro.org> wrote:
> This patch enables AUTO_ZRELADDR as default config to Renasas R-Mobile and
> SH-Mobile platforms.
>
> AUTO_ZRELADDR config enables auto calculation of the decompressed kernel image
> address. AUTO_ZRELADDR config is mutually exclusive to ZBOOT_ROM, and also
> assumes zImage to be loaded in the first 128MiB from start of memory.
>
> CFT::Call For Testing
>
> Requesting maintainers of R-Mobile and SH-Mobile platforms to evaluate the
> changes on the board and comment, as I dont have the board for testing, and
> also requesting an ACK.
>
> Signed-off-by: panchaxari <panchaxari.prasannamurthy@linaro.org>

Thanks for the patch. I believe we enable this for the multiplatform
case already. The legacy case still supports ZBOOT_ROM and boards that
don't work with AUTO_ZRELADDR, so because of this we intentionally
don't enable it there.

What is the reason you want to add it here?

Thanks,

/ magnus

[PATCH CFT] ARM:SHMOBILE: Enable AUTO_ZRELADDR by default

[Simon Horman]

This patch does not enable AUTO_ZRELADDR by default.
It forces AUTO_ZRELADDR to be enabled to be used unless ZBOOT_ROM is enabled.

I'm not opposed to this approach but I think the changelog is misleading.


AUTO_ZRELADDR is known to work on the Genmai, Koelsch, KZM9D and Lager
boards and is enabled in their defconfigs.

I will defer to Magnus on weather he is comfortable with being
enable globally for shmobile but if not perhaps it could be selected
on a per-board or per-SoC basis.

On Thu, Jan 09, 2014 at 02:01:14PM +0530, panchaxari wrote:
> This patch enables AUTO_ZRELADDR as default config to Renasas R-Mobile and
> SH-Mobile platforms.
> 
> AUTO_ZRELADDR config enables auto calculation of the decompressed kernel image
> address. AUTO_ZRELADDR config is mutually exclusive to ZBOOT_ROM, and also
> assumes zImage to be loaded in the first 128MiB from start of memory.
> 
> CFT::Call For Testing
> 
> Requesting maintainers of R-Mobile and SH-Mobile platforms to evaluate the
> changes on the board and comment, as I dont have the board for testing, and
> also requesting an ACK.
> 
> Signed-off-by: panchaxari <panchaxari.prasannamurthy@linaro.org>

Please use your first name and last  name in the From address and
Signed-off-by line.

e.g.

Signed-off-by: Panchaxari Prasannamurthy <panchaxari.prasannamurthy@linaro.org>

> Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> Cc: Simon Horman <horms@verge.net.au>
> Cc: Magnus Damm <damm@opensource.se>
> Cc: Russell King <linux@arm.linux.org.uk>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Cc: linux-sh at vger.kernel.org
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: linux-kernel at vger.kernel.org
> ---
> Below lkml link is a quoting by Russell which clears the concept of PHYS_VIRT
> and ZRELADDR
> ---------------------------------------------------
> 
> https://lkml.org/lkml/2011/10/14/434
> 
> -------------------------------------------------
> ---
>  arch/arm/Kconfig |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 8e668e2..077ef9d 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -674,6 +674,7 @@ config ARCH_MSM
>  config ARCH_SHMOBILE
>  	bool "Renesas SH-Mobile / R-Mobile"
>  	select ARM_PATCH_PHYS_VIRT
> +	select AUTO_ZRELADDR
>  	select CLKDEV_LOOKUP
>  	select GENERIC_CLOCKEVENTS
>  	select HAVE_ARM_SCU if SMP
> -- 
> 1.7.10.4
> 
> --
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> 

[PATCH CFT] ARM:SHMOBILE: Enable AUTO_ZRELADDR by default

[Russell King - ARM Linux]

On Thu, Jan 09, 2014 at 02:01:14PM +0530, panchaxari wrote:
> This patch enables AUTO_ZRELADDR as default config to Renasas R-Mobile and
> SH-Mobile platforms.

NAK.

-- 
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Estimate before purchase was "up to 13.2Mbit".