From: Wu Zhangjin <wuzhangjin@xxxxxxxxx> This file will obviously reduce the size of kernel image file, reduce tons of branches and enhance the performance. $ wc -c vmlinux // before 8054849 vmlinux $ wc -c vmlinux // after 7626936 vmlinux $ echo $(((8054849-7626936)/1024)) // kb 417 $ echo "(8054849-7626936)/8054849" | bc -l .05312489408553779220 Signed-off-by: Wu Zhangjin <wuzhangjin@xxxxxxxxx> --- .../asm/mach-loongson/cpu-feature-overrides.h | 58 ++++++++++++++++++++ 1 files changed, 58 insertions(+), 0 deletions(-) create mode 100644 arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h diff --git a/arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h b/arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h new file mode 100644 index 0000000..daa2ee9 --- /dev/null +++ b/arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h @@ -0,0 +1,58 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2009 Wu Zhangjin <wuzj@xxxxxxxxxx> + * Copyright (C) 2009 Philippe Vachon <philippe@xxxxxxxxx> + * Copyright (C) 2009 Zhang Le <r0bertz@xxxxxxxxxx> + * + * reference: /proc/cpuinfo, + * arch/mips/kernel/cpu-probe.c(cpu_probe_legacy), + * arch/mips/kernel/proc.c(show_cpuinfo), + * loongson2f user manual. + */ + +#ifndef __ASM_LOONGSON_CPU_FEATURE_OVERRIDES_H +#define __ASM_LOONGSON_CPU_FEATURE_OVERRIDES_H + +#define cpu_dcache_line_size() 32 +#define cpu_icache_line_size() 32 +#define cpu_scache_line_size() 32 + +#define cpu_has_32fpr 1 +#define cpu_has_3k_cache 0 +#define cpu_has_4k_cache 1 +#define cpu_has_4kex 1 +#define cpu_has_64bits 1 +#define cpu_has_cache_cdex_p 0 +#define cpu_has_cache_cdex_s 0 +#define cpu_has_counter 1 +#define cpu_has_dc_aliases 1 +#define cpu_has_divec 0 +#define cpu_has_dsp 0 +#define cpu_has_ejtag 0 +#define cpu_has_fpu 1 +#define cpu_has_ic_fills_f_dc 0 +#define cpu_has_inclusive_pcaches 1 +#define cpu_has_llsc 1 +#define cpu_has_mcheck 0 +#define cpu_has_mdmx 0 +#define cpu_has_mips16 0 +#define cpu_has_mips32r1 0 +#define cpu_has_mips32r2 0 +#define cpu_has_mips3d 0 +#define cpu_has_mips64r1 0 +#define cpu_has_mips64r2 0 +#define cpu_has_mipsmt 0 +#define cpu_has_prefetch 0 +#define cpu_has_smartmips 0 +#define cpu_has_tlb 1 +#define cpu_has_tx39_cache 0 +#define cpu_has_userlocal 0 +#define cpu_has_vce 0 +#define cpu_has_vtag_icache 0 +#define cpu_has_watch 1 +#define cpu_icache_snoops_remote_store 1 + +#endif /* __ASM_LOONGSON_CPU_FEATURE_OVERRIDES_H */ -- 1.6.2.1
