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authorLinus Walleij <linus.walleij@linaro.org>2011-08-09 21:03:43 +0200
committerLinus Walleij <linus.walleij@linaro.org>2011-08-17 10:20:29 +0200
commit73285146544589424e8e1c1ebd6304d3c6231acf (patch)
treebf708ce0fad584054e6904219e58c833d02f72d0 /arch/arm/mach-u300
parent93ee7a9340d64f20295aacc3fb6a22b759323280 (diff)
downloadblackbird-obmc-linux-73285146544589424e8e1c1ebd6304d3c6231acf.tar.gz
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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: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-u300')
-rw-r--r--arch/arm/mach-u300/Kconfig38
-rw-r--r--arch/arm/mach-u300/Makefile.boot17
-rw-r--r--arch/arm/mach-u300/include/mach/memory.h22
-rw-r--r--arch/arm/mach-u300/u300.c16
4 files changed, 5 insertions, 88 deletions
diff --git a/arch/arm/mach-u300/Kconfig b/arch/arm/mach-u300/Kconfig
index 32a7b0f7e9f7..d3a9ca45ef85 100644
--- a/arch/arm/mach-u300/Kconfig
+++ b/arch/arm/mach-u300/Kconfig
@@ -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
diff --git a/arch/arm/mach-u300/Makefile.boot b/arch/arm/mach-u300/Makefile.boot
index 6fbfc6ea2d35..a06bb0deadfe 100644
--- a/arch/arm/mach-u300/Makefile.boot
+++ b/arch/arm/mach-u300/Makefile.boot
@@ -1,15 +1,4 @@
-# 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
-
+ zreladdr-y := 0x48008000
+params_phys-y := 0x48000100
# This isn't used.
-#initrd_phys-y := 0x29800000
+#initrd_phys-y := 0x48800000
diff --git a/arch/arm/mach-u300/include/mach/memory.h b/arch/arm/mach-u300/include/mach/memory.h
index 888e2e351ee1..02bd832f063e 100644
--- a/arch/arm/mach-u300/include/mach/memory.h
+++ b/arch/arm/mach-u300/include/mach/memory.h
@@ -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 PLAT_PHYS_OFFSET UL(0x48000000)
+#define BOOT_PARAMS_OFFSET (PLAT_PHYS_OFFSET + 0x100)
/*
* We enable a real big DMA buffer if need be.
diff --git a/arch/arm/mach-u300/u300.c b/arch/arm/mach-u300/u300.c
index 48b3b7f39966..25d11bac2a10 100644
--- a/arch/arm/mach-u300/u300.c
+++ b/arch/arm/mach-u300/u300.c
@@ -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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