This is the stage2.c function for the device tree creation.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@78 f3766cd6-281f-0410-b1cd-43a5c92072e9

lib/stage2.c

@@ -0,0 +1,107 @@
+/*
+ * stage2 - LinuxBIOS ram based setup
+ *
+ * Copyright (C) 2000 Ron Minnich, Advanced Computing Lab, LANL
+ * rminnich@lanl.gov
+ *
+ * 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; version 2 of the License.
+ *
+ * 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
+ *
+ */
+
+/*
+This software and ancillary information (herein called SOFTWARE)
+called LinuxBIOS is made available under the terms described
+here.  The SOFTWARE has been approved for release with associated
+LA-CC Number 00-34.  Unless otherwise indicated, this SOFTWARE has
+been authored by an employee or employees of the University of
+California, operator of the Los Alamos National Laboratory under
+Contract No. W-7405-ENG-36 with the U.S. Department of Energy.  The
+U.S. Government has rights to use, reproduce, and distribute this
+SOFTWARE.  The public may copy, distribute, prepare derivative works
+and publicly display this SOFTWARE without charge, provided that this
+Notice and any statement of authorship are reproduced on all copies.
+Neither the Government nor the University makes any warranty, express
+or implied, or assumes any liability or responsibility for the use of
+this SOFTWARE.  If SOFTWARE is modified to produce derivative works,
+such modified SOFTWARE should be clearly marked, so as not to confuse
+it with the version available from LANL.
+ */
+
+
+/*
+ * C Bootstrap code for the LinuxBIOS
+ */
+
+
+#include <arch/types.h>
+#include <string.h>
+#include <lar.h>
+#include <console/loglevel.h>
+
+
+/**
+ * @brief Main function of the DRAM part of LinuxBIOS.
+ *
+ * LinuxBIOS is divided into Pre-DRAM part and DRAM part. 
+ * The phases before this part are phase 0 and phase 1.
+ * This part contains phases x through y. 
+ *
+ * 
+ * Device Enumeration:
+ *	In the dev_enumerate() phase, 
+ */
+void stage2(void)
+{
+	struct lb_memory *lb_mem;
+
+	post_code(0x20);
+	dev_init();
+
+	dev_phase1(); /* console init, also ANYTHING that has to be done before printk can be used */
+	
+	post_code(0x30);
+
+//	printk_notice("LinuxBIOS-%s%s %s booting...\n", linuxbios_version, linuxbios_extra_version, linuxbios_build);
+
+	post_code(0x40);
+
+	/* here is where weird stuff like init_timer handling should be done. This is for ANYTHING
+	  * that might have to happen before device enumeration but that needs a printk
+	  */
+	dev_phase2();
+	/* walk physical devices and add any dynamic devices to the device tree */
+	post_code(0x30);
+	dev_root_phase3();
+	post_code(0x40);
+	/* Compute and assign the bus resources. */
+	dev_phase4();
+	post_code(0x50);
+	/* Now actually enable devices on the bus */
+	dev_root_phase5(); 
+	post_code(0x60);
+	/*initialize devices on the bus */
+	dev_phase6(); 
+	
+	post_code(0x70);
+#ifdef NOT
+	/* Now that we have collected all of our information
+	 * write our configuration tables.
+	 */
+	phase8(); /* all devices up, prepare for elfboot */
+
+	elfboot(lb_mem);
+#endif
+
+}
+