i386: use ACPI to power off the machine

This is a mostly verbatim copy of acpihalt.c from GRUB2 with a little
bit of glue code.

* i386/Makefrag.am (libkernel_a_SOURCES): Add the new files.
* i386/grub/acpi.h: Verbatim copy from GRUB2.
* i386/grub/compiler.h: Likewise.
* i386/grub/cpu/io.h: Likewise.
* i386/grub/cpu/time.h: Likewise.
* i386/grub/cpu/types.h: Likewise.
* i386/grub/err.h: Likewise.
* i386/grub/misc.h: Likewise.
* i386/grub/mm.h: Likewise.
* i386/grub/symbol.h: Likewise.
* i386/grub/time.h: Likewise.
* i386/grub/types.h: Likewise.
* i386/i386at/acpi.c: Likewise.
* i386/i386at/acpihalt.c: Likewise.
(grub_acpi_halt): Map physical addresses.
* i386/i386at/acpihalt.h: New file.
* i386/grub/glue.h: Some glue macros.
* i386/grub/i18n.h: Stub out i18n.
* i386/i386at/grub_glue.c: Some glue code.
* i386/i386at/model_dep.c (halt_all_cpus): Use grub_acpi_halt.

1 files changed, 72 insertions, 0 deletions

diff --git a/i386/grub/cpu/io.h b/i386/grub/cpu/io.h
new file mode 100644
index 0000000..ae12a3e
--- /dev/null
+++ b/i386/grub/cpu/io.h
@@ -0,0 +1,72 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 1996,2000,2002,2007  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Based on sys/io.h from GNU libc. */
+
+#ifndef	GRUB_IO_H
+#define	GRUB_IO_H	1
+
+typedef unsigned short int grub_port_t;
+
+static __inline unsigned char
+grub_inb (unsigned short int port)
+{
+  unsigned char _v;
+
+  __asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
+  return _v;
+}
+
+static __inline unsigned short int
+grub_inw (unsigned short int port)
+{
+  unsigned short _v;
+
+  __asm__ __volatile__ ("inw %w1,%0":"=a" (_v):"Nd" (port));
+  return _v;
+}
+
+static __inline unsigned int
+grub_inl (unsigned short int port)
+{
+  unsigned int _v;
+
+  __asm__ __volatile__ ("inl %w1,%0":"=a" (_v):"Nd" (port));
+  return _v;
+}
+
+static __inline void
+grub_outb (unsigned char value, unsigned short int port)
+{
+  __asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
+}
+
+static __inline void
+grub_outw (unsigned short int value, unsigned short int port)
+{
+  __asm__ __volatile__ ("outw %w0,%w1": :"a" (value), "Nd" (port));
+
+}
+
+static __inline void
+grub_outl (unsigned int value, unsigned short int port)
+{
+  __asm__ __volatile__ ("outl %0,%w1": :"a" (value), "Nd" (port));
+}
+
+#endif /* _SYS_IO_H */