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Commit 3932b9ca authored by Max Filippov's avatar Max Filippov
Browse files

xtensa: make PLATFORM_DEFAULT_MEM parameters configurable 



This allows using xtfpga platform with both MMU and noMMU cores.

Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent 5a0b1d78

arch/xtensa/Kconfig

+36 −0
Original line number Diff line number Diff line
@@ -319,6 +319,7 @@ config XTENSA_PLATFORM_S6105 
config XTENSA_PLATFORM_XTFPGA

	bool "XTFPGA"

	select ETHOC if ETHERNET

	select PLATFORM_WANT_DEFAULT_MEM

	select SERIAL_CONSOLE

	select XTENSA_CALIBRATE_CCOUNT

	help
@@ -405,6 +406,41 @@ source "drivers/pcmcia/Kconfig" 


source "drivers/pci/hotplug/Kconfig"



config PLATFORM_WANT_DEFAULT_MEM

	def_bool n



config DEFAULT_MEM_START

	hex "Physical address of the default memory area start"

	depends on PLATFORM_WANT_DEFAULT_MEM

	default 0x00000000 if MMU

	default 0x40000000 if !MMU

	help

	  This is a fallback start address of the default memory area, it is

	  used when no physical memory size is passed through DTB or through

	  boot parameter from bootloader.



	  In noMMU configuration the following parameters are derived from it:

	  - kernel load address;

	  - kernel entry point address;

	  - relocatable vectors base address;

	  - uBoot load address;

	  - TASK_SIZE.



	  If unsure, leave the default value here.



config DEFAULT_MEM_SIZE

	hex "Maximal size of the default memory area"

	depends on PLATFORM_WANT_DEFAULT_MEM

	default 0x04000000

	help

	  This is a fallback size of the default memory area, it is used when

	  no physical memory size is passed through DTB or through boot

	  parameter from bootloader.



	  It's also used for TASK_SIZE calculation in noMMU configuration.



	  If unsure, leave the default value here.



endmenu



menu "Executable file formats"

arch/xtensa/platforms/xtfpga/include/platform/hardware.h

+2 −2
Original line number Diff line number Diff line
@@ -17,8 +17,8 @@ 


/* Memory configuration. */



#define PLATFORM_DEFAULT_MEM_START 0x00000000

#define PLATFORM_DEFAULT_MEM_SIZE  0x04000000

#define PLATFORM_DEFAULT_MEM_START CONFIG_DEFAULT_MEM_START

#define PLATFORM_DEFAULT_MEM_SIZE  CONFIG_DEFAULT_MEM_SIZE



/* Interrupt configuration. */