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-rw-r--r--arch/i386/boot/apm.c98
1 files changed, 0 insertions, 98 deletions
diff --git a/arch/i386/boot/apm.c b/arch/i386/boot/apm.c
deleted file mode 100644
index eab50c55a3a5..000000000000
--- a/arch/i386/boot/apm.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/* -*- linux-c -*- ------------------------------------------------------- *
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright 2007 rPath, Inc. - All Rights Reserved
- *
- * Original APM BIOS checking by Stephen Rothwell, May 1994
- * (sfr@canb.auug.org.au)
- *
- * 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/apm.c
- *
- * Get APM BIOS information
- */
-
-#include "boot.h"
-
-#if defined(CONFIG_APM) || defined(CONFIG_APM_MODULE)
-
-int query_apm_bios(void)
-{
- u16 ax, bx, cx, dx, di;
- u32 ebx, esi;
- u8 err;
-
- /* APM BIOS installation check */
- ax = 0x5300;
- bx = cx = 0;
- asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp ; setc %0"
- : "=d" (err), "+a" (ax), "+b" (bx), "+c" (cx)
- : : "esi", "edi");
-
- if (err)
- return -1; /* No APM BIOS */
-
- if (bx != 0x504d) /* "PM" signature */
- return -1;
-
- if (!(cx & 0x02)) /* 32 bits supported? */
- return -1;
-
- /* Disconnect first, just in case */
- ax = 0x5304;
- bx = 0;
- asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp"
- : "+a" (ax), "+b" (bx)
- : : "ecx", "edx", "esi", "edi");
-
- /* Paranoia */
- ebx = esi = 0;
- cx = dx = di = 0;
-
- /* 32-bit connect */
- asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp ; setc %6"
- : "=a" (ax), "+b" (ebx), "+c" (cx), "+d" (dx),
- "+S" (esi), "+D" (di), "=m" (err)
- : "a" (0x5303));
-
- boot_params.apm_bios_info.cseg = ax;
- boot_params.apm_bios_info.offset = ebx;
- boot_params.apm_bios_info.cseg_16 = cx;
- boot_params.apm_bios_info.dseg = dx;
- boot_params.apm_bios_info.cseg_len = (u16)esi;
- boot_params.apm_bios_info.cseg_16_len = esi >> 16;
- boot_params.apm_bios_info.dseg_len = di;
-
- if (err)
- return -1;
-
- /* Redo the installation check as the 32-bit connect;
- some BIOSes return different flags this way... */
-
- ax = 0x5300;
- bx = cx = 0;
- asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp ; setc %0"
- : "=d" (err), "+a" (ax), "+b" (bx), "+c" (cx)
- : : "esi", "edi");
-
- if (err || bx != 0x504d) {
- /* Failure with 32-bit connect, try to disconect and ignore */
- ax = 0x5304;
- bx = 0;
- asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp"
- : "+a" (ax), "+b" (bx)
- : : "ecx", "edx", "esi", "edi");
- return -1;
- }
-
- boot_params.apm_bios_info.version = ax;
- boot_params.apm_bios_info.flags = cx;
- return 0;
-}
-
-#endif