[PATCH] header for pc9800 type detection

diff --git a/include/asm-i386/pc9800.h b/include/asm-i386/pc9800.h
new file mode 100644 (file)
index 0000000..1268f35
--- /dev/null
+++ b/include/asm-i386/pc9800.h
@@ -0,0 +1,27 @@
+/*
+ *  PC-9800 machine types.
+ *
+ *  Copyright (C) 1999 TAKAI Kosuke <tak@kmc.kyoto-u.ac.jp>
+ *                     (Linux/98 Project)
+ */
+
+#ifndef _ASM_PC9800_H_
+#define _ASM_PC9800_H_
+
+#include <asm/pc9800_sca.h>
+#include <asm/types.h>
+
+#define __PC9800SCA(type, pa)  (*(type *) phys_to_virt(pa))
+#define __PC9800SCA_TEST_BIT(pa, n)    \
+       ((__PC9800SCA(u8, pa) & (1U << (n))) != 0)
+
+#define PC9800_HIGHRESO_P()    __PC9800SCA_TEST_BIT(PC9800SCA_BIOS_FLAG, 3)
+#define PC9800_8MHz_P()                __PC9800SCA_TEST_BIT(PC9800SCA_BIOS_FLAG, 7)
+
+                               /* 0x2198 is 98 21 on memory... */
+#define PC9800_9821_P()                (__PC9800SCA(u16, PC9821SCA_ROM_ID) == 0x2198)
+
+/* Note PC9821_...() are valid only when PC9800_9821_P() was true. */
+#define PC9821_IDEIF_DOUBLE_P()        __PC9800SCA_TEST_BIT(PC9821SCA_ROM_FLAG4, 4)
+
+#endif