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author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:45 +0200 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:45 +0200 |
commit | 96ae6ea0be1b902c28b3b463c27da42b41e2b63a (patch) | |
tree | fbc18761d4fa93d7b0f6dbf3496289fa32bd363a /arch/x86/boot/voyager.c | |
parent | 0530bf37cebcf22a73652937c2340bc1ebd92000 (diff) | |
download | op-kernel-dev-96ae6ea0be1b902c28b3b463c27da42b41e2b63a.zip op-kernel-dev-96ae6ea0be1b902c28b3b463c27da42b41e2b63a.tar.gz |
i386: move boot
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/boot/voyager.c')
-rw-r--r-- | arch/x86/boot/voyager.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/x86/boot/voyager.c b/arch/x86/boot/voyager.c new file mode 100644 index 0000000..61c8fe0 --- /dev/null +++ b/arch/x86/boot/voyager.c @@ -0,0 +1,46 @@ +/* -*- linux-c -*- ------------------------------------------------------- * + * + * Copyright (C) 1991, 1992 Linus Torvalds + * Copyright 2007 rPath, Inc. - All Rights Reserved + * + * This file is part of the Linux kernel, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +/* + * arch/i386/boot/voyager.c + * + * Get the Voyager config information + */ + +#include "boot.h" + +#ifdef CONFIG_X86_VOYAGER + +int query_voyager(void) +{ + u8 err; + u16 es, di; + /* Abuse the apm_bios_info area for this */ + u8 *data_ptr = (u8 *)&boot_params.apm_bios_info; + + data_ptr[0] = 0xff; /* Flag on config not found(?) */ + + asm("pushw %%es ; " + "int $0x15 ; " + "setc %0 ; " + "movw %%es, %1 ; " + "popw %%es" + : "=q" (err), "=r" (es), "=D" (di) + : "a" (0xffc0)); + + if (err) + return -1; /* Not Voyager */ + + set_fs(es); + copy_from_fs(data_ptr, di, 7); /* Table is 7 bytes apparently */ + return 0; +} + +#endif /* CONFIG_X86_VOYAGER */ |