Commit aea731c8 authored by Max Filippov's avatar Max Filippov
Browse files

xtensa: rework {CONFIG,PLATFORM}_DEFAULT_MEM_START 



Drop PLATFORM_DEFAULT_MEM_START from the platform/hardware.h headers.
Provide definition of CONFIG_DEFAULT_MEM_START always, allow changing it
only in noMMU configurations when PLATFORM_WANT_DEFAULT_MEM is selected.
Change prompt and description so that it's clear that it controls
PAGE_OFFSET and PHYS_OFFSET.

Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent f79e4d5f

arch/xtensa/Kconfig

+7 −8
Original line number Diff line number Diff line
@@ -530,14 +530,13 @@ 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 0x60000000 if !MMU

	help

	  This is the base address of the default memory area.

	  Default memory area has platform-specific meaning, it may be used

	  for e.g. early cache initialization.

	hex

	prompt "PAGE_OFFSET/PHYS_OFFSET" if !MMU && PLATFORM_WANT_DEFAULT_MEM

	default 0x60000000 if PLATFORM_WANT_DEFAULT_MEM

	default 0x00000000

	help

	  This is the base address used for both PAGE_OFFSET and PHYS_OFFSET

	  in noMMU configurations.



	  If unsure, leave the default value here.

arch/xtensa/include/asm/page.h

+2 −3
Original line number Diff line number Diff line
@@ -14,7 +14,6 @@ 
#include <asm/processor.h>

#include <asm/types.h>

#include <asm/cache.h>

#include <platform/hardware.h>

#include <asm/kmem_layout.h>



/*
@@ -31,8 +30,8 @@ 
#define MAX_LOW_PFN	(PHYS_PFN(XCHAL_KSEG_PADDR) + \

			 PHYS_PFN(XCHAL_KSEG_SIZE))

#else

#define PAGE_OFFSET	PLATFORM_DEFAULT_MEM_START

#define PHYS_OFFSET	PLATFORM_DEFAULT_MEM_START

#define PAGE_OFFSET	_AC(CONFIG_DEFAULT_MEM_START, UL)

#define PHYS_OFFSET	_AC(CONFIG_DEFAULT_MEM_START, UL)

#define MAX_LOW_PFN	PHYS_PFN(0xfffffffful)

#endif

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

+0 −10
Original line number Diff line number Diff line
@@ -15,14 +15,4 @@ 
#ifndef _XTENSA_PLATFORM_ISS_HARDWARE_H

#define _XTENSA_PLATFORM_ISS_HARDWARE_H



/*

 * Memory configuration.

 */



#define PLATFORM_DEFAULT_MEM_START	0x00000000



/*

 * Interrupt configuration.

 */



#endif /* _XTENSA_PLATFORM_ISS_HARDWARE_H */

arch/xtensa/platforms/xt2000/include/platform/hardware.h

+0 −6
Original line number Diff line number Diff line
@@ -17,12 +17,6 @@ 


#include <variant/core.h>



/* 

 * Memory configuration.

 */



#define PLATFORM_DEFAULT_MEM_START 0x00000000



/*

 * Number of platform IRQs

 */

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

+0 −4
Original line number Diff line number Diff line
@@ -17,10 +17,6 @@ 
#ifndef __XTENSA_XTAVNET_HARDWARE_H

#define __XTENSA_XTAVNET_HARDWARE_H



/* Memory configuration. */



#define PLATFORM_DEFAULT_MEM_START __XTENSA_UL(CONFIG_DEFAULT_MEM_START)



/* Interrupt configuration. */



#define PLATFORM_NR_IRQS	0

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