override CPU features to save ~125KB of kernel memory

SVN-Revision: 11050

target/linux/atheros/files/include/asm-mips/mach-atheros/cpu-feature-overrides.h

@@ -0,0 +1,84 @@
+/*
+ *  Atheros SoC specific CPU feature overrides
+ *
+ *  Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  This file was derived from: include/asm-mips/cpu-features.h
+ *	Copyright (C) 2003, 2004 Ralf Baechle
+ *	Copyright (C) 2004 Maciej W. Rozycki
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 2 as published
+ *  by the Free Software Foundation.
+ *
+ */
+#ifndef __ASM_MACH_ATHEROS_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_ATHEROS_CPU_FEATURE_OVERRIDES_H
+
+/*
+ * The ATHEROS SoCs have MIPS 4Kc/4KEc core.
+ */
+#define cpu_has_tlb			1
+#define cpu_has_4kex			1
+#define cpu_has_3k_cache		0
+#define cpu_has_4k_cache		1
+#define cpu_has_tx39_cache		0
+#define cpu_has_sb1_cache		0
+#define cpu_has_fpu			0
+#define cpu_has_32fpr			0
+#define cpu_has_counter			1
+/* #define cpu_has_watch		? */
+/* #define cpu_has_divec		? */
+/* #define cpu_has_vce			? */
+/* #define cpu_has_cache_cdex_p		? */
+/* #define cpu_has_cache_cdex_s		? */
+/* #define cpu_has_prefetch		? */
+/* #define cpu_has_mcheck		? */
+#define cpu_has_ejtag			1
+
+#if !defined(CONFIG_ATHEROS_AR5312)
+#  define cpu_has_llsc			1
+#else
+/*
+ * The MIPS 4Kc V0.9 core in the AR5312/AR2312 have problems with the
+ * ll/sc instructions.
+ */
+#  define cpu_has_llsc			0
+#endif
+
+#define cpu_has_mips16			0
+#define cpu_has_mdmx			0
+#define cpu_has_mips3d			0
+#define cpu_has_smartmips		0
+
+/* #define cpu_has_vtag_icache		? */
+/* #define cpu_has_dc_aliases		? */
+/* #define cpu_has_ic_fills_f_dc	? */
+/* #define cpu_has_pindexed_dcache	? */
+
+/* #define cpu_icache_snoops_remote_store	? */
+
+#define cpu_has_mips32r1		1
+
+#if !defined(CONFIG_ATHEROS_5312)
+#  define cpu_has_mips32r2		1
+#endif
+
+#define cpu_has_mips64r1		0
+#define cpu_has_mips64r2		0
+
+#define cpu_has_dsp			0
+#define cpu_has_mipsmt			0
+
+/* #define cpu_has_nofpuex		? */
+#define cpu_has_64bits			0
+#define cpu_has_64bit_zero_reg		0
+#define cpu_has_64bit_gp_regs		0
+#define cpu_has_64bit_addresses		0
+
+/* #define cpu_has_inclusive_pcaches	? */
+
+/* #define cpu_dcache_line_size()	? */
+/* #define cpu_icache_line_size()	? */
+
+#endif /* __ASM_MACH_ATHEROS_CPU_FEATURE_OVERRIDES_H */