Commit 7279dc3e authored by Catalin Marinas's avatar Catalin Marinas Committed by Russell King
Browse files

[ARM] 5388/1: Add hwcap bits for VFPv3 and VFPv3D16



The VFPv3D16 is a VFPv3 CPU configuration where only 16 double registers
are present, as the VFPv2 configuration. This patch adds the
corresponding hwcap bits so that applications or debuggers have more
information about the supported features.
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 3d1228ea
......@@ -17,6 +17,8 @@
#define HWCAP_CRUNCH 1024
#define HWCAP_THUMBEE 2048
#define HWCAP_NEON 4096
#define HWCAP_VFPv3 8192
#define HWCAP_VFPv3D16 16384
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
/*
......
......@@ -779,6 +779,8 @@ static const char *hwcap_str[] = {
"crunch",
"thumbee",
"neon",
"vfpv3",
"vfpv3d16",
NULL
};
......
......@@ -476,6 +476,18 @@ static int __init vfp_init(void)
* in place; report VFP support to userspace.
*/
elf_hwcap |= HWCAP_VFP;
#ifdef CONFIG_VFPv3
if (VFP_arch >= 3) {
elf_hwcap |= HWCAP_VFPv3;
/*
* Check for VFPv3 D16. CPUs in this configuration
* only have 16 x 64bit registers.
*/
if (((fmrx(MVFR0) & MVFR0_A_SIMD_MASK)) == 1)
elf_hwcap |= HWCAP_VFPv3D16;
}
#endif
#ifdef CONFIG_NEON
/*
* Check for the presence of the Advanced SIMD
......
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