On Fri, Dec 13, 2013 at 2:28 PM, panchaxari
<panchaxari.prasannamurthy@xxxxxxxxxx> wrote:
> Configs ARM_PATCH_PHYS_VIRT and AUTO_ZRELADDR are enabled as default
> to platform S3C24XX.
>
> Introduction of PHYS_VIRT config as default would enable phy-to-virt and
> virt-to-phy translation function at boot and module loading time
> and enforce dynamic reallocation of memory. AUTO_ZRELADDR config would
> enable calculation of kernel load address at run time.
>
> PHYS_VIRT config is mutually exclusive to XIP_KERNEL, XIP_KERNEL is used in
> systems with NOR flash devices, and ZRELADDR config is mutually exclusive
> to ZBOOT_ROM.
>
> CFT::Call For Testing
>
> Requesting maintainers of S3C24XX platforms to evaluate the changes on the
> board and comment, as I dont have the board for testing and also requesting
> an ACK the changes.
Hi,
I guess AUTO_ZRELADDR will break S2RAM on h1940/rx1950 and rx3715
machines. Those machines require reservation of 4k at 0x30003000 and
4k at 0x30081000, because bootloader
will corrupt these areas on resume. See .reserve callback in
arch/arm/mach-s3c24xx/mach-{h1940,rx1950,rx3715}
Regards
Vasily
>
> Signed-off-by: panchaxari <panchaxari.prasannamurthy@xxxxxxxxxx>
> Cc: Heiko Stuebner <heiko@xxxxxxxxx>
> Cc: Ben Dooks <ben-linux@xxxxxxxxx>
> Cc: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
> Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
> Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-samsung-soc@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
>
> ---
> S3C24XX is basically a Samsung SOC with ARM920T instruction set, and has
> an operating frquency of 203MHz, it also has enhanced MMU architecture
> to support WinCE, EPOC 32 and Linux.
>
> This SOC is an Integrated system for hand-held devices and general
> embedded systems.
>
> Supports various types of ROM for booting (NOR/NAND Flash, EEPROM, and others).
> Supports 8 memory banks, 128M for each bank, with a total of 1GB.
> ---
> arch/arm/Kconfig | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 32acacb..ec1faea 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -708,6 +708,8 @@ config ARCH_S3C24XX
> bool "Samsung S3C24XX SoCs"
> select ARCH_HAS_CPUFREQ
> select ARCH_REQUIRE_GPIOLIB
> + select ARM_PATCH_PHYS_VIRT
> + select AUTO_ZRELADDR
> select CLKDEV_LOOKUP
> select CLKSRC_SAMSUNG_PWM
> select GENERIC_CLOCKEVENTS
> --
> 1.7.10.4
>
>
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