1 files changed, 91 insertions, 0 deletions
diff --git a/riscv/configfrag.ac b/riscv/configfrag.ac
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+dnl Configure fragment for riscv.
+
+dnl Copyright (C) 1999, 2004, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+dnl Permission to use, copy, modify and distribute this software and its
+dnl documentation is hereby granted, provided that both the copyright
+dnl notice and this permission notice appear in all copies of the
+dnl software, derivative works or modified versions, and any portions
+dnl thereof, and that both notices appear in supporting documentation.
+dnl
+dnl THE FREE SOFTWARE FOUNDATION ALLOWS FREE USE OF THIS SOFTWARE IN ITS
+dnl "AS IS" CONDITION.  THE FREE SOFTWARE FOUNDATION DISCLAIMS ANY
+dnl LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE
+dnl USE OF THIS SOFTWARE.
+
+#
+# Definitions.
+#
+
+[case $host_cpu in
+  riscv32)]
+    AM_CONDITIONAL([HOST_riscv32], [true])
+
+    CFLAGS="$CFLAGS -mcmodel=medany -march=rv64gcv"
+
+    # Some of the riscv-specific code checks for these.
+    AC_DEFINE([__ELF__], [1], [__ELF__])
+
+    # Determines the size of the CPU cache line.
+    AC_DEFINE([CPU_L1_SHIFT], [6], [CPU_L1_SHIFT])
+
+    [# Does the architecture provide machine-specific interfaces?
+    mach_machine_routines=1;;
+  *)]
+    AM_CONDITIONAL([HOST_riscv32], [false])[;;
+esac
+
+case $host_cpu in
+  riscv64)]
+    AM_CONDITIONAL([HOST_riscv64], [true])
+
+    CFLAGS="$CFLAGS -mcmodel=medany -march=rv64gcv"
+
+    # Some of the riscv-specific code checks for these.
+    AC_DEFINE([__ELF__], [1], [__ELF__])
+
+    # Determines the size of the CPU cache line.
+    AC_DEFINE([CPU_L1_SHIFT], [6], [CPU_L1_SHIFT])
+
+    [# Does the architecture provide machine-specific interfaces?
+    mach_machine_routines=1;;
+  *)]
+    AM_CONDITIONAL([HOST_riscv64], [false])[;;
+esac
+
+case $host_platform in
+  riscv)]
+    AM_CONDITIONAL([PLATFORM_riscv], [true])[;;
+  *)]
+    AM_CONDITIONAL([PLATFORM_riscv], [false])[;;
+esac]
+
+#
+# Options.
+#
+
+# The immediate console, useful for debugging early system
+# initialization.  Disabled by default.
+AC_DEFINE([ENABLE_IMMEDIATE_CONSOLE], [0], [ENABLE_IMMEDIATE_CONSOLE])
+
+AC_ARG_ENABLE([apic],
+  AS_HELP_STRING([--enable-apic], [LAPIC/IOAPIC support]))
+[if [ x"$enable_apic" = xyes ]; then]
+  AC_DEFINE([APIC], [1], [APIC support])
+  AM_CONDITIONAL([enable_apic], [true])
+[else]
+  AM_CONDITIONAL([enable_apic], [false])
+[fi]
+
+AC_ARG_WITH([_START_MAP],
+  AS_HELP_STRING([--with-_START_MAP=0x1000000], [specify kernel mapping start address]),
+  [_START_MAP="$withval"], [_START_MAP=0x1000000])
+AC_SUBST(_START_MAP)
+
+AC_CONFIG_LINKS([asm:$systype/include/asm
+                 uapi:$systype/include/uapi
+		 generated:$systype/include/generated])
+		 
+dnl Local Variables:
+dnl mode: autoconf
+dnl End: