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authorPeter Tyser <ptyser@xes-inc.com>2010-04-12 22:28:04 -0500
committerWolfgang Denk <wd@denx.de>2010-04-13 09:13:03 +0200
commitea0364f1bbfed1e3ea711147420875cf338fe77a (patch)
tree15c051bc4d2e94c1661c73e1b87c22c7beda7c24 /lib_i386/realmode.c
parent89f39e177e7b0152aa1d3152baa25d986e36cdcf (diff)
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Move lib_$ARCH directories to arch/$ARCH/lib
Also move lib_$ARCH/config.mk to arch/$ARCH/config.mk This change is intended to clean up the top-level directory structure and more closely mimic Linux's directory organization. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'lib_i386/realmode.c')
-rw-r--r--lib_i386/realmode.c100
1 files changed, 0 insertions, 100 deletions
diff --git a/lib_i386/realmode.c b/lib_i386/realmode.c
deleted file mode 100644
index 3c3c1fc..0000000
--- a/lib_i386/realmode.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program 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 2 of
- * the License, or (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/ptrace.h>
-#include <asm/realmode.h>
-
-
-#define REALMODE_BASE ((char*)0x7c0)
-#define REALMODE_MAILBOX ((char*)0xe00)
-
-
-extern ulong _i386boot_realmode;
-extern ulong _i386boot_realmode_size;
-extern char realmode_enter;
-
-int realmode_setup(void)
-{
- ulong i386boot_realmode = (ulong)&_i386boot_realmode;
- ulong i386boot_realmode_size = (ulong)&_i386boot_realmode_size;
-
- /* copy the realmode switch code */
- if (i386boot_realmode_size > (REALMODE_MAILBOX-REALMODE_BASE)) {
- printf("realmode switch too large (%ld bytes, max is %d)\n",
- i386boot_realmode_size, (REALMODE_MAILBOX-REALMODE_BASE));
- return -1;
- }
-
- memcpy(REALMODE_BASE, (void*)i386boot_realmode, i386boot_realmode_size);
- asm("wbinvd\n");
-
- return 0;
-}
-
-int enter_realmode(u16 seg, u16 off, struct pt_regs *in, struct pt_regs *out)
-{
-
- /* setup out thin bios emulation */
- if (bios_setup()) {
- return -1;
- }
-
- if (realmode_setup()) {
- return -1;
- }
-
- in->eip = off;
- in->xcs = seg;
- if (3>(in->esp & 0xffff)) {
- printf("Warning: entering realmode with sp < 4 will fail\n");
- }
-
- memcpy(REALMODE_MAILBOX, in, sizeof(struct pt_regs));
- asm("wbinvd\n");
-
- __asm__ volatile (
- "lcall $0x20,%0\n" : : "i" (&realmode_enter) );
-
- asm("wbinvd\n");
- memcpy(out, REALMODE_MAILBOX, sizeof(struct pt_regs));
-
- return out->eax;
-}
-
-
-/* This code is supposed to access a realmode interrupt
- * it does currently not work for me */
-int enter_realmode_int(u8 lvl, struct pt_regs *in, struct pt_regs *out)
-{
- /* place two instructions at 0x700 */
- writeb(0xcd, 0x700); /* int $lvl */
- writeb(lvl, 0x701);
- writeb(0xcb, 0x702); /* lret */
- asm("wbinvd\n");
-
- enter_realmode(0x00, 0x700, in, out);
-
- return out->eflags&1;
-}