From 7a8e9bed17d7924a9c5c4699b1f6a3a0359524ed Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Sat, 31 May 2003 18:35:21 +0000
Subject: * Patch by Marc Singer, 29 May 2003:   Fixed rarp boot method for
 IA32 and other little-endian CPUs.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

* Patch by Marc Singer, 28 May 2003:
  Added port I/O commands.

* Patch by Matthew McClintock, 28 May 2003
  - cpu/mpc824x/start.S: fix relocation code when booting from RAM
  - minor patches for utx8245

* Patch by Daniel Engström, 28 May 2003:
  x86 update

* Patch by Dave Ellis, 9 May 2003 + 27 May 2003:
  add nand flash support to SXNI855T configuration
  fix/extend nand flash support:
  - fix 'nand erase' command so does not erase bad blocks
  - fix 'nand write' command so does not write to bad blocks
  - fix nand_probe() so handles no flash detected properly
  - add doc/README.nand
  - add .jffs2 and .oob options to nand read/write
  - add 'nand bad' command to list bad blocks
  - add 'clean' option to 'nand erase' to write JFFS2 clean markers
  - make NAND read/write faster

* Patch by Rune Torgersen, 23 May 2003:
  Update for MPC8266ADS board
---
 lib_i386/bios.h | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 lib_i386/bios.h

(limited to 'lib_i386/bios.h')

diff --git a/lib_i386/bios.h b/lib_i386/bios.h
new file mode 100644
index 0000000000..876fe31b26
--- /dev/null
+++ b/lib_i386/bios.h
@@ -0,0 +1,94 @@
+/*
+ * (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
+ */
+
+#ifndef _BIOS_H_
+#define _BIOS_H_
+
+#define OFFS_ES      0     /* 16bit */
+#define OFFS_GS      2     /* 16bit */
+#define OFFS_DS      4     /* 16bit */
+#define OFFS_EDI     6     /* 32bit */
+#define OFFS_DI      6     /* low 16 bits of EDI */   
+#define OFFS_ESI     10    /* 32bit */
+#define OFFS_SI      10    /* low 16 bits of ESI */   
+#define OFFS_EBP     14    /* 32bit */
+#define OFFS_BP      14    /* low 16 bits of EBP */
+#define OFFS_ESP     18    /* 32bit */
+#define OFFS_SP      18    /* low 16 bits of ESP */
+#define OFFS_EBX     22    /* 32bit */
+#define OFFS_BX      22    /* low 16 bits of EBX */
+#define OFFS_BL      22    /* low  8 bits of BX */
+#define OFFS_BH      23    /* high 8 bits of BX */
+#define OFFS_EDX     26    /* 32bit */
+#define OFFS_DX      26    /* low 16 bits of EBX */
+#define OFFS_DL      26    /* low  8 bits of BX */
+#define OFFS_DH      27    /* high 8 bits of BX */
+#define OFFS_ECX     30    /* 32bit */
+#define OFFS_CX      30    /* low 16 bits of EBX */
+#define OFFS_CL      30    /* low  8 bits of BX */
+#define OFFS_CH      31    /* high 8 bits of BX */
+#define OFFS_EAX     34    /* 32bit */
+#define OFFS_AX      34    /* low 16 bits of EBX */
+#define OFFS_AL      34    /* low  8 bits of BX */
+#define OFFS_AH      35    /* high 8 bits of BX */
+#define OFFS_VECTOR  38    /* 16bit */
+#define OFFS_IP      40    /* 16bit */
+#define OFFS_CS      42    /* 16bit */
+#define OFFS_FLAGS   44    /* 16bit */   
+
+#define SEGMENT      0x40
+#define STACK	     0x800  			/* stack at 0x40:0x800 -> 0x800 */
+
+/* save general registers */
+/* save some segments     */
+/* save callers stack segment .. */
+/* ... in gs */
+	/* setup my segments */ 
+	/* setup BIOS stackpointer */ 
+	
+#define MAKE_BIOS_STACK \
+	pushal		; \
+	pushw	%ds	; \
+	pushw	%gs	; \
+	pushw	%es	; \
+	pushw	%ss	; \
+	popw	%gs	; \
+	movw	$SEGMENT,%ax ; \
+	movw	%ax,%ds	; \
+	movw	%ax,%es	; \
+	movw	%ax,%ss	; \
+	movw	%sp,%bp	; \
+	movw	$STACK,%sp
+
+#define RESTORE_CALLERS_STACK \
+	pushw	%gs     ;			/* restore callers stack segment */ \
+	popw	%ss     ; \
+	movw	%bp,%sp	;			/* restore stackpointer */ \
+		\
+	popw	%es	;			/* restore segment selectors */ \
+	popw	%gs     ; \
+	popw	%ds     ; \
+		\
+	popal					/* restore GP registers */ 
+
+#endif
-- 
cgit v1.2.1