Add XWAY cpu-feature-overrides.h file.

This patch adds cpu-feature-overrides.h file for the XWAY family, based in the one in FALCON. Because Amazon SE was deprecated, cpu_has_dsp and cpu_has_mips16 have been set, while cpu_has_mt has been undefined due to the lack of mt ASE in the Danube.
With this file the kernel size is reduced about 30KB in the XWAY subtarget.
Tested in a Danube based router with no problems and with a little improvement in the USB port when using mass storage devices and wireless dongles.

Signed off by: José Vázquez Fernández <ppvazquez...@gmail.com>

diff --git a/target/linux/lantiq/patches-3.10/0036-MIPS-lantiq-xway-add-cpu-feature-override.patch b/target/linux/lantiq/patches-3.10/0036-MIPS-lantiq-xway-add-cpu-feature-override.patch
new file mode 100644
index 0000000..5e9a9d2
diff -urN a/arch/mips/include/asm/mach-lantiq/xway/cpu-feature- overrides.h b/arch/mips/include/asm/mach-lantiq/xway/cpu-feature-overrides.h --- a/arch/mips/include/asm/mach-lantiq/xway/cpu-feature-overrides.h 1970-01-01 01:00:00.000000000 +0100 +++ b/arch/mips/include/asm/mach-lantiq/xway/cpu-feature-overrides.h 2014-07-01 12:37:07.790313378 +0200
@@ -0,0 +1,58 @@
+/*
+ *  Lantiq XWAY specific CPU feature overrides
+ *
+ *  Copyright (C) 2014 José Vázquez Fernández
+ *
+ *  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_XWAY_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_XWAY_CPU_FEATURE_OVERRIDES_H
+
+#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          1
+#define cpu_has_divec          1
+
+#define cpu_has_prefetch       1
+#define cpu_has_ejtag          1
+#define cpu_has_llsc           1
+
+#define cpu_has_dsp            1
+#define cpu_has_mips16         1
+#define cpu_has_dsp2           0
+#define cpu_has_mdmx           0
+#define cpu_has_mips3d         0
+#define cpu_has_smartmips      0
+#define cpu_has_vz             0
+
+#define cpu_has_mips32r1       1
+#define cpu_has_mips32r2       1
+#define cpu_has_mips64r1       0
+#define cpu_has_mips64r2       0
+
+#define cpu_has_vint           1 /* MIPSR2 vectored interrupts */
+#define cpu_has_veic           1 /* MIPSR2 external interrupt controller mode 
*/
+
+#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_dcache_line_size() 32
+#define cpu_icache_line_size() 32
+
+#endif /* __ASM_MACH_XWAY_CPU_FEATURE_OVERRIDES_H */
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