[PATCH 1/2] ARM: ux500: move ASIC ID remap to ITCM area
From: Linus Walleij <hidden>
Date: 2015-07-30 13:35:56
Subsystem:
arm port, arm/nomadik/ux500 architectures, the rest · Maintainers:
Russell King, Linus Walleij, Linus Torvalds
The Ux500 does not have ITCM memory so we can remap the ASIC ID at 0xfffe0000 to get that remap out of the vmalloc area. Signed-off-by: Linus Walleij <redacted> --- arch/arm/mach-ux500/db8500-regs.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-ux500/db8500-regs.h b/arch/arm/mach-ux500/db8500-regs.h
index 27399553c841..65b7a689374c 100644
--- a/arch/arm/mach-ux500/db8500-regs.h
+++ b/arch/arm/mach-ux500/db8500-regs.h@@ -182,8 +182,11 @@ */ #define U8500_IO_VIRTUAL 0xf0000000 #define U8500_IO_PHYSICAL 0xa0000000 -/* This is where we map in the ROM to check ASIC IDs */ -#define UX500_VIRT_ROM IOMEM(0xf0000000) +/* + * This is where we map in the ROM to check ASIC IDs, as the Ux500s + * do not have TCM memory, we can reuse the ITCM reserved area. + */ +#define UX500_VIRT_ROM IOMEM(0xfffe0000) /* This macro is used in assembly, so no cast */ #define IO_ADDRESS(x) \
--
2.4.3