From: Catalin Marinas <catalin.marinas@arm.com>
Date: Thu, 6 Nov 2008 13:23:07 +0000 (+0000)
Subject: Add HWCAP_NEON to the ARM hwcap.h file
X-Git-Tag: v2.6.29-rc1~559^2~84^2~7
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2bedbdf4148ebbe48c7a89449ab52e475a788f42;p=karo-tx-linux.git

Add HWCAP_NEON to the ARM hwcap.h file

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---

diff --git a/arch/arm/include/asm/hwcap.h b/arch/arm/include/asm/hwcap.h
index 81f4c899a555..bda489f9f017 100644
--- a/arch/arm/include/asm/hwcap.h
+++ b/arch/arm/include/asm/hwcap.h
@@ -16,6 +16,7 @@
 #define HWCAP_IWMMXT	512
 #define HWCAP_CRUNCH	1024
 #define HWCAP_THUMBEE	2048
+#define HWCAP_NEON	4096
 
 #if defined(__KERNEL__) && !defined(__ASSEMBLY__)
 /*
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 66e1a643ed14..d4dae3e9b294 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -773,6 +773,7 @@ static const char *hwcap_str[] = {
 	"iwmmxt",
 	"crunch",
 	"thumbee",
+	"neon",
 	NULL
 };
 
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index c0d2c9bb952b..67ca340a7c85 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -371,6 +371,15 @@ static int __init vfp_init(void)
 		 * in place; report VFP support to userspace.
 		 */
 		elf_hwcap |= HWCAP_VFP;
+#ifdef CONFIG_NEON
+		/*
+		 * Check for the presence of the Advanced SIMD
+		 * load/store instructions, integer and single
+		 * precision floating point operations.
+		 */
+		if ((fmrx(MVFR1) & 0x000fff00) == 0x00011100)
+			elf_hwcap |= HWCAP_NEON;
+#endif
 	}
 	return 0;
 }