diff options
Diffstat (limited to 'arch/nds32/kernel/setup.c')
| -rw-r--r-- | arch/nds32/kernel/setup.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/nds32/kernel/setup.c b/arch/nds32/kernel/setup.c index eacc79024879..d7f5657bc638 100644 --- a/arch/nds32/kernel/setup.c +++ b/arch/nds32/kernel/setup.c @@ -15,6 +15,7 @@ #include <asm/proc-fns.h> #include <asm/cache_info.h> #include <asm/elf.h> +#include <asm/fpu.h> #include <nds32_intrinsic.h> #define HWCAP_MFUSR_PC 0x000001 @@ -40,6 +41,7 @@ #define HWCAP_DX_REGS 0x100000 unsigned long cpu_id, cpu_rev, cpu_cfgid; +bool has_fpu = false; char cpu_series; char *endianness = NULL; @@ -136,6 +138,11 @@ static void __init dump_cpu_info(int cpu) (aliasing_num - 1) << PAGE_SHIFT; } #endif +#ifdef CONFIG_FPU + /* Disable fpu and enable when it is used. */ + if (has_fpu) + disable_fpu(); +#endif } static void __init setup_cpuinfo(void) @@ -180,9 +187,10 @@ static void __init setup_cpuinfo(void) if (cpu_cfgid & 0x0004) elf_hwcap |= HWCAP_EXT2; - if (cpu_cfgid & 0x0008) + if (cpu_cfgid & 0x0008) { elf_hwcap |= HWCAP_FPU; - + has_fpu = true; + } if (cpu_cfgid & 0x0010) elf_hwcap |= HWCAP_STRING; |