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

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 <redacted>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <redacted>
Cc: Russell King <redacted>
Cc: Linus Walleij <redacted>
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

On Thu, Jan 9, 2014 at 5:31 PM, panchaxari
[off-list ref] 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 <redacted>

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

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 <redacted>

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

e.g.

Signed-off-by: Panchaxari Prasannamurthy <redacted>

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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in database were 13.1 to 19Mbit for a good line, about 7.5+ for a bad.
Estimate before purchase was "up to 13.2Mbit".