Commit 73285146 authored by Linus Walleij's avatar Linus Walleij
Browse files

mach-u300: retire odd singlemem variant 



The U300 had a special variant where a memory was shared
between two CPU:s and only one part of memory was
accessible for the kernel. However it is now seriously
legacy and only create problems for kernel consolidation,
so let's retire it.

Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 93ee7a93

arch/arm/mach-u300/Kconfig

+0 −38
Original line number Diff line number Diff line
@@ -48,25 +48,6 @@ config MACH_U300_BS365 


endchoice



choice

	prompt "Memory configuration"

	default MACH_U300_SINGLE_RAM

	---help---

	You have to config the kernel according to the physical memory

	configuration.



config MACH_U300_SINGLE_RAM

	bool "Single RAM"

	help

		Select this if you want support for Single RAM phones.



config MACH_U300_DUAL_RAM

	bool "Dual RAM"

	help

		Select this if you want support for Dual RAM phones.

		This is two RAM memories on different EMIFs.

endchoice



config U300_DEBUG

	bool "Debug support for U300"

	depends on PM
@@ -93,25 +74,6 @@ config MACH_U300_SPIDUMMY 
		you don't need it. Selecting this will activate the

		SPI framework and ARM PL022 support.



comment "All the settings below must match the bootloader's settings"



config MACH_U300_ACCESS_MEM_SIZE

       int "Access CPU memory allocation"

       range 7 25

       depends on MACH_U300_SINGLE_RAM

       default 13

       help

		How much memory in MiB that the Access side CPU has allocated



config MACH_U300_2MB_ALIGNMENT_FIX

       bool "2MiB alignment fix"

       depends on MACH_U300_SINGLE_RAM

       default y

       help

		If yes and the Access side CPU has allocated an odd size in

		MiB, this fix gives you one MiB extra that would otherwise be

		lost due to Linux 2 MiB alignment policy.



endmenu



endif

arch/arm/mach-u300/Makefile.boot

+3 −14
Original line number Diff line number Diff line 
# Note: the following conditions must always be true:

#   ZRELADDR == virt_to_phys(TEXTADDR)

#   PARAMS_PHYS must be within 4MB of ZRELADDR

#   INITRD_PHYS must be in RAM



ifdef CONFIG_MACH_U300_SINGLE_RAM

     zreladdr-y	:= 0x28E08000

  params_phys-y	:= 0x28E00100

else

   zreladdr-y	:= 0x48008000

params_phys-y	:= 0x48000100

endif



# This isn't used.

#initrd_phys-y	:= 0x29800000
 
#initrd_phys-y	:= 0x48800000

arch/arm/mach-u300/include/mach/memory.h

+2 −20
Original line number Diff line number Diff line
@@ -13,26 +13,8 @@ 
#ifndef __MACH_MEMORY_H

#define __MACH_MEMORY_H



#ifdef CONFIG_MACH_U300_DUAL_RAM



#define PLAT_PHYS_OFFSET	UL(0x48000000)

#define BOOT_PARAMS_OFFSET	(PHYS_OFFSET + 0x100)



#else



#ifdef CONFIG_MACH_U300_2MB_ALIGNMENT_FIX

#define PLAT_PHYS_OFFSET (0x28000000 + \

	     (CONFIG_MACH_U300_ACCESS_MEM_SIZE - \

	     (CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024)

#else

#define PLAT_PHYS_OFFSET (0x28000000 + \

	     (CONFIG_MACH_U300_ACCESS_MEM_SIZE +	\

	     (CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024)

#endif

#define BOOT_PARAMS_OFFSET (0x28000000 + \

	    (CONFIG_MACH_U300_ACCESS_MEM_SIZE +		\

	    (CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024 + 0x100)

#endif

#define BOOT_PARAMS_OFFSET	(PLAT_PHYS_OFFSET + 0x100)



/*

 * We enable a real big DMA buffer if need be.

arch/arm/mach-u300/u300.c

+0 −16
Original line number Diff line number Diff line
@@ -23,21 +23,6 @@ 
#include <asm/mach/arch.h>

#include <asm/memory.h>



static void __init u300_reserve(void)

{

	/*

	 * U300 - This platform family can share physical memory

	 * between two ARM cpus, one running Linux and the other

	 * running another OS.

	 */

#ifdef CONFIG_MACH_U300_SINGLE_RAM

#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && \

	CONFIG_MACH_U300_2MB_ALIGNMENT_FIX

        memblock_reserve(PHYS_OFFSET, 0x00100000);

#endif

#endif

}



static void __init u300_init_machine(void)

{

	u300_init_devices();
@@ -63,7 +48,6 @@ MACHINE_START(U300, MACH_U300_STRING) 
	/* Maintainer: Linus Walleij <linus.walleij@stericsson.com> */

	.boot_params	= BOOT_PARAMS_OFFSET,

	.map_io		= u300_map_io,

	.reserve	= u300_reserve,

	.init_irq	= u300_init_irq,

	.timer		= &u300_timer,

	.init_machine	= u300_init_machine,

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