Add an include file which contains the register definitions for the

Intel 440BX northbridge (Closes #39).

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Richard Smith <smithbone@gmail.com>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2495 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/northbridge/intel/i440bx/i440bx.h

@@ -0,0 +1,81 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/* 
+ * Datasheet:
+ *   - Name: Intel 440BX AGPset: 82443BX Host Bridge/Controller
+ *   - URL: http://www.intel.com/design/chipsets/datashts/290633.htm
+ *   - PDF: http://www.intel.com/design/chipsets/datashts/29063301.pdf
+ *   - Order Number: 290633-001
+ */
+
+/*
+ * Host-to-PCI Bridge Registers.
+ * The values in parenthesis are the default values as per datasheet.
+ * Any addresses between 0x00 and 0xff not listed below are either
+ * Reserved or Intel Reserved and should not be touched.
+ */ 
+#define VID     0x00 /* Vendor Identification (0x8086). */
+#define DID     0x02 /* Device Identification (0x7190/0x7192). */
+#define PCICMD  0x04 /* PCI Command Register (0x006). */
+#define PCISTS  0x06 /* PCI Status Register (0x0210/0x0200). */
+#define RID     0x08 /* Revision Identification (0x00/0x01/0x02). */
+#define SUBC    0x0a /* Sub-Class Code (0x00). */
+#define BCC     0x0b /* Base Class Code (0x06). */
+#define MLT     0x0d /* Master Latency Timer (0x00). */
+#define HDR     0x0e /* Header Type (0x00). */
+#define APBASE  0x10 /* Aperture Base Configuration (0x00000008). */
+#define SVID    0x2c /* Subsystem Vendor Identification (0x0000). */
+#define SID     0x2e /* Subsystem Identification (0x0000). */
+#define CAPPTR  0x34 /* Capabilities Pointer (0xa0/0x00. */
+#define NBXCFG  0x50 /* 440BX Configuration (0x0000:00S0_0000_000S_0S00b). */
+#define DRAMC   0x57 /* DRAM Control (00S0_0000b). */
+#define DRAMT   0x58 /* DRAM Timing (0x03). */
+#define PAM     0x59 /* Programmable Attribute Map, 7 registers (0x00). */
+#define DRB     0x60 /* DRAM Row Boundary, 8 registers (0x01). */
+#define FDHC    0x68 /* Fixed SDRAM Hole Control (0x00). */
+#define MBSC    0x69 /* Memory Buffer Strength Control (0x0000-0000-0000). */
+#define SMRAM   0x72 /* System Management RAM Control (0x02). */
+#define ESMRAMC 0x73 /* Extended System Management RAM Control (0x38). */
+#define RPS     0x74 /* SDRAM Row Page Size (0x0000). */
+#define SDRAMC  0x76 /* SDRAM Control Register (0x0000). */
+#define PGPOL   0x78 /* Paging Policy Register (0x00). */
+#define PMCR    0x7a /* Power Management Control Register (0000_S0S0b). */
+#define SCRR    0x7b /* Suspend CBR Refresh Rate Register (0x0038). */
+#define EAP     0x80 /* Error Address Pointer Register (0x00000000). */
+#define ERRCMD  0x90 /* Error Command Register (0x80). */
+#define ERRSTS  0x91 /* Error Status (0x0000). */
+// TODO: AGP stuff.
+#define MBFS    0xca /* Memory Buffer Frequency Select (0x000000). */
+#define BSPAD   0xd0 /* BIOS Scratch Pad (0x000..000). */
+#define DWTC    0xe0 /* DRAM Write Thermal Throttling Control (0x000..000). */
+#define DRTC    0xe8 /* DRAM Read Thermal Throttling Control (0x000..000). */
+#define BUFFC   0xf0 /* Buffer Control Register (0x0000). */
+
+/* For convenience: */
+#define DRB0    0x60
+#define DRB1    0x61
+#define DRB2    0x62
+#define DRB3    0x63
+#define DRB4    0x64
+#define DRB5    0x65
+#define DRB6    0x66
+#define DRB7    0x67
+