Configs ARM_PATCH_PHYS_VIRT and AUTO_ZRELADDR are enabled as default to S3C64XX platform
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 S3C64XX 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.
Signed-off-by: panchaxari panchaxari.prasannamurthy@linaro.org Cc: Mark Brown broonie@linaro.org Cc: Tomasz Figa tomasz.figa@gmail.com Cc: Ben Dooks ben-linux@fluff.org Cc: Kukjin Kim kgene.kim@samsung.com Cc: Russell King linux@arm.linux.org.uk Cc: Linus Walleij linus.walleij@linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-kernel@vger.kernel.org
--- This is basically a Samsung SOC with ARM1176JZF-S instruction set, and has an operating frquency of 667MHz, it also has 64bit AXI bus. It supports WinCE, Linux, Android and Ubuntu.
This platform has two variants of CPU, S3C6400 and S3C6410.
This SOC is an Integrated system for Mobile Internet Device, Notebook, handheld/3G mobile devices.
Supports various types of ROM for booting (NOR/NAND Flash, OneNand, SD-card and others).
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 | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 7c6247b..ec1faea 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -731,7 +731,9 @@ config ARCH_S3C64XX bool "Samsung S3C64XX" select ARCH_HAS_CPUFREQ select ARCH_REQUIRE_GPIOLIB + select ARM_PATCH_PHYS_VIRT select ARM_VIC + select AUTO_ZRELADDR select CLKDEV_LOOKUP select CLKSRC_SAMSUNG_PWM select COMMON_CLK