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| author | Russell King <rmk+kernel@armlinux.org.uk> | 2016-08-19 16:24:36 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2016-08-26 15:10:19 +0100 |
| commit | c94e4ad2d5e0e5f4036cccaa0e6e773841e8f859 (patch) | |
| tree | 5cf6c39838ac6a2b6fba862978942b1bcdecb8a9 /arch/arm | |
| parent | 83809b90a6dbedbcd94fcb99c9cde9477534f3d3 (diff) | |
| download | linux-c94e4ad2d5e0e5f4036cccaa0e6e773841e8f859.tar.bz2 | |
ARM: document and update UNCACHEABLE_ADDR definitions
Document the UNCACHEABLE_ADDR definitions for footbridge and SA1100
so that we know where they're located and/or what they're accessing.
Change RiscPC to calculate the UNCACHEABLE_ADDR value from FLUSH_BASE
as that's where we locate that.
UNCACHEABLE_ADDR is used to perform an uncached access (ARMv4
terminology) necessary to force a CPU clock-switch to the memory-
speed clock, as required for entering WFI.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-footbridge/include/mach/hardware.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-rpc/include/mach/hardware.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-sa1100/include/mach/hardware.h | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm/mach-footbridge/include/mach/hardware.h b/arch/arm/mach-footbridge/include/mach/hardware.h index 02f6d7a706b1..20d5ad781fe2 100644 --- a/arch/arm/mach-footbridge/include/mach/hardware.h +++ b/arch/arm/mach-footbridge/include/mach/hardware.h @@ -59,7 +59,7 @@ #define XBUS_SWITCH_J17_11 ((*XBUS_SWITCH) & (1 << 5)) #define XBUS_SWITCH_J17_9 ((*XBUS_SWITCH) & (1 << 6)) -#define UNCACHEABLE_ADDR (ARMCSR_BASE + 0x108) +#define UNCACHEABLE_ADDR (ARMCSR_BASE + 0x108) /* CSR_ROMBASEMASK */ /* PIC irq control */ diff --git a/arch/arm/mach-rpc/include/mach/hardware.h b/arch/arm/mach-rpc/include/mach/hardware.h index 257166b21f3d..aa79fa47373a 100644 --- a/arch/arm/mach-rpc/include/mach/hardware.h +++ b/arch/arm/mach-rpc/include/mach/hardware.h @@ -40,7 +40,7 @@ #define SCREEN_END 0xdfc00000 #define SCREEN_BASE 0xdf800000 -#define UNCACHEABLE_ADDR 0xdf010000 +#define UNCACHEABLE_ADDR (FLUSH_BASE + 0x10000) /* * IO Addresses diff --git a/arch/arm/mach-sa1100/include/mach/hardware.h b/arch/arm/mach-sa1100/include/mach/hardware.h index 55c85ce7010d..d944fd7e464f 100644 --- a/arch/arm/mach-sa1100/include/mach/hardware.h +++ b/arch/arm/mach-sa1100/include/mach/hardware.h @@ -13,7 +13,7 @@ #define __ASM_ARCH_HARDWARE_H -#define UNCACHEABLE_ADDR 0xfa050000 +#define UNCACHEABLE_ADDR 0xfa050000 /* ICIP */ /* |