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authorRalf Baechle <ralf@linux-mips.org>2005-09-03 15:56:11 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:06:04 -0700
commit07119621e62de0a2c8db6e4896e762c498bfdd17 (patch)
treec62dd52e8072235c8148e7f31b16ed30c5e45343 /include
parent7901c7998267d9d8c3f1b226a8c8cfd7f8e48a01 (diff)
downloadop-kernel-dev-07119621e62de0a2c8db6e4896e762c498bfdd17.zip
op-kernel-dev-07119621e62de0a2c8db6e4896e762c498bfdd17.tar.gz
[PATCH] mips: add support for Qemu system architecture
Add support for the virtual MIPS system that is emulated by Qemu. See http://www.linux-mips.org/wiki/Qemu for a detailed current status. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/asm-mips/mach-qemu/cpu-feature-overrides.h31
-rw-r--r--include/asm-mips/mach-qemu/param.h13
-rw-r--r--include/asm-mips/qemu.h24
3 files changed, 68 insertions, 0 deletions
diff --git a/include/asm-mips/mach-qemu/cpu-feature-overrides.h b/include/asm-mips/mach-qemu/cpu-feature-overrides.h
new file mode 100644
index 0000000..f4e370e
--- /dev/null
+++ b/include/asm-mips/mach-qemu/cpu-feature-overrides.h
@@ -0,0 +1,31 @@
+/*
+ * 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) 2003 Ralf Baechle
+ */
+#ifndef __ASM_MACH_QEMU_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_QEMU_CPU_FEATURE_OVERRIDES_H
+
+/*
+ * QEMU only comes with a hazard-free MIPS32 processor, so things are easy.
+ */
+#define cpu_has_mips16 0
+#define cpu_has_divec 0
+#define cpu_has_cache_cdex_p 0
+#define cpu_has_prefetch 0
+#define cpu_has_mcheck 0
+#define cpu_has_ejtag 0
+
+#define cpu_has_llsc 1
+#define cpu_has_vtag_icache 0
+#define cpu_has_dc_aliases (PAGE_SIZE < 0x4000)
+#define cpu_has_ic_fills_f_dc 0
+
+#define cpu_has_dsp 0
+
+#define cpu_has_nofpuex 0
+#define cpu_has_64bits 0
+
+#endif /* __ASM_MACH_QEMU_CPU_FEATURE_OVERRIDES_H */
diff --git a/include/asm-mips/mach-qemu/param.h b/include/asm-mips/mach-qemu/param.h
new file mode 100644
index 0000000..cb30ee4
--- /dev/null
+++ b/include/asm-mips/mach-qemu/param.h
@@ -0,0 +1,13 @@
+/*
+ * 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) 2005 by Ralf Baechle
+ */
+#ifndef __ASM_MACH_QEMU_PARAM_H
+#define __ASM_MACH_QEMU_PARAM_H
+
+#define HZ 100 /* Internal kernel timer frequency */
+
+#endif /* __ASM_MACH_QEMU_PARAM_H */
diff --git a/include/asm-mips/qemu.h b/include/asm-mips/qemu.h
new file mode 100644
index 0000000..905c395
--- /dev/null
+++ b/include/asm-mips/qemu.h
@@ -0,0 +1,24 @@
+/*
+ * 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) 2005 by Ralf Baechle (ralf@linux-mips.org)
+ */
+#ifndef __ASM_QEMU_H
+#define __ASM_QEMU_H
+
+/*
+ * Interrupt numbers
+ */
+#define Q_PIC_IRQ_BASE 0
+#define Q_COUNT_COMPARE_IRQ 16
+
+/*
+ * Qemu clock rate. Unlike on real MIPS this has no relation to the
+ * instruction issue rate, so the choosen value is pure fiction, just needs
+ * to match the value in Qemu itself.
+ */
+#define QEMU_C0_COUNTER_CLOCK 100000000
+
+#endif /* __ASM_QEMU_H */
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