2 files changed, 293 insertions, 0 deletions
diff --git a/linux/dev/init/main.c b/linux/dev/init/main.c
new file mode 100644
index 0000000..6d85395
--- /dev/null
+++ b/linux/dev/init/main.c
@@ -0,0 +1,261 @@
+/*
+ * Linux initialization.
+ *
+ * Copyright (C) 1996 The University of Utah and the Computer Systems
+ * Laboratory at the University of Utah (CSL)
+ *
+ * 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, 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, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *      Author: Shantanu Goel, University of Utah CSL
+ */
+
+/*
+ *  linux/init/main.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+#include <sys/types.h>
+
+#include <mach/vm_param.h>
+#include <mach/vm_prot.h>
+#include <mach/machine.h>
+
+#include <vm/vm_page.h>
+#include <kern/kalloc.h>
+
+#include <machine/spl.h>
+#include <machine/pmap.h>
+#include <machine/vm_param.h>
+#include <machine/model_dep.h>
+
+#define MACH_INCLUDE
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <linux/dev/glue/glue.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+
+/*
+ * Timing loop count.
+ */
+unsigned long loops_per_sec = 1;
+
+#if defined(__SMP__) && defined(__i386__)
+unsigned long smp_loops_per_tick = 1000000;
+#endif
+
+/*
+ * End of physical memory.
+ */
+unsigned long high_memory;
+
+/*
+ * Flag to indicate auto-configuration is in progress.
+ */
+int linux_auto_config = 1;
+
+/*
+ * Hard drive parameters obtained from the BIOS.
+ */
+struct drive_info_struct
+{
+  char dummy[32];
+} drive_info;
+
+/*
+ * Forward declarations.
+ */
+static void calibrate_delay (void);
+
+/*
+ * Amount of contiguous memory to allocate for initialization.
+ */
+#define CONTIG_ALLOC (512 * 1024)
+
+/*
+ * Initialize Linux drivers.
+ */
+void
+linux_init (void)
+{
+  int addr;
+  unsigned long memory_start, memory_end;
+  vm_page_t pages;
+
+  /*
+   * Initialize memory size.
+   */
+  high_memory = vm_page_seg_end(VM_PAGE_SEL_DIRECTMAP);
+  init_IRQ ();
+  linux_sched_init ();
+
+  /*
+   * Set loop count.
+   */
+  calibrate_delay ();
+
+  /*
+   * Initialize drive info.
+   */
+  addr = *((unsigned *) phystokv (0x104));
+  memcpy (&drive_info,
+	  (void *) ((addr & 0xffff) + ((addr >> 12) & 0xffff0)), 16);
+  addr = *((unsigned *) phystokv (0x118));
+  memcpy ((char *) &drive_info + 16,
+	  (void *) ((addr & 0xffff) + ((addr >> 12) & 0xffff0)), 16);
+
+  /*
+   * Initialize Linux memory allocator.
+   */
+  linux_kmem_init ();
+
+  /*
+   * Allocate contiguous memory below 16 MB.
+   */
+  memory_start = alloc_contig_mem (CONTIG_ALLOC, 16 * 1024 * 1024, 0, &pages);
+  if (memory_start == 0)
+    panic ("linux_init: alloc_contig_mem failed");
+  memory_end = memory_start + CONTIG_ALLOC;
+
+  /*
+   * Initialize PCI bus.
+   */
+  memory_start = pci_init (memory_start, memory_end);
+
+  if (memory_start > memory_end)
+    panic ("linux_init: ran out memory");
+
+  /*
+   * Initialize devices.
+   */
+#ifdef CONFIG_INET
+  linux_net_emulation_init ();
+#endif
+
+  device_setup ();
+
+#ifdef CONFIG_PCMCIA
+  /* 
+   * Initialize pcmcia.
+   */
+  pcmcia_init ();
+#endif
+
+  restore_IRQ ();
+
+  linux_auto_config = 0;
+}
+
+#ifndef NBPW
+#define NBPW 32
+#endif
+
+/*
+ * Allocate contiguous memory with the given constraints.
+ */
+unsigned long
+alloc_contig_mem (unsigned size, unsigned limit,
+		  unsigned mask, vm_page_t * pages)
+{
+  vm_page_t p;
+
+  p = vm_page_grab_contig(size, VM_PAGE_SEL_DMA);
+
+  if (p == NULL)
+    return 0;
+
+  if (pages)
+    *pages = p;
+
+  return phystokv(vm_page_to_pa(p));
+}
+
+/*
+ * Free memory allocated by alloc_contig_mem.
+ */
+void
+free_contig_mem (vm_page_t pages, unsigned size)
+{
+  vm_page_free_contig(pages, size);
+}
+
+/* This is the number of bits of precision for the loops_per_second.  Each
+ * bit takes on average 1.5/HZ seconds.  This (like the original) is a little
+ * better than 1%
+ */
+#define LPS_PREC 8
+
+static void
+calibrate_delay (void)
+{
+  int ticks;
+  int loopbit;
+  int lps_precision = LPS_PREC;
+
+  loops_per_sec = (1 << 12);
+
+#ifndef MACH
+  printk ("Calibrating delay loop.. ");
+#endif
+  while (loops_per_sec <<= 1)
+    {
+      /* wait for "start of" clock tick */
+      ticks = jiffies;
+      while (ticks == jiffies)
+	/* nothing */ ;
+      /* Go .. */
+      ticks = jiffies;
+      __delay (loops_per_sec);
+      ticks = jiffies - ticks;
+      if (ticks)
+	break;
+    }
+
+  /* Do a binary approximation to get loops_per_second set to equal one clock
+   * (up to lps_precision bits)
+   */
+  loops_per_sec >>= 1;
+  loopbit = loops_per_sec;
+  while (lps_precision-- && (loopbit >>= 1))
+    {
+      loops_per_sec |= loopbit;
+      ticks = jiffies;
+      while (ticks == jiffies);
+      ticks = jiffies;
+      __delay (loops_per_sec);
+      if (jiffies != ticks)	/* longer than 1 tick */
+	loops_per_sec &= ~loopbit;
+    }
+
+  /* finally, adjust loops per second in terms of seconds instead of clocks */
+  loops_per_sec *= HZ;
+  /* Round the value and print it */
+#ifndef MACH
+  printk ("ok - %lu.%02lu BogoMIPS\n",
+	  (loops_per_sec + 2500) / 500000,
+	  ((loops_per_sec + 2500) / 5000) % 100);
+#endif
+
+#if defined(__SMP__) && defined(__i386__)
+  smp_loops_per_tick = loops_per_sec / 400;
+#endif
+}
diff --git a/linux/dev/init/version.c b/linux/dev/init/version.c
new file mode 100644
index 0000000..1989483
--- /dev/null
+++ b/linux/dev/init/version.c
@@ -0,0 +1,32 @@
+/*
+ *  linux/version.c
+ *
+ *  Copyright (C) 1992  Theodore Ts'o
+ *
+ *  May be freely distributed as part of Linux.
+ */
+
+#define MACH_INCLUDE
+#include <linux/config.h>
+#include <linux/utsname.h>
+#include <linux/version.h>
+#include <linux/compile.h>
+
+/* make the "checkconfig" script happy: we really need to include config.h */
+#ifdef CONFIG_BOGUS
+#endif
+
+#define version(a) Version_ ## a
+#define version_string(a) version(a)
+
+int version_string (LINUX_VERSION_CODE) = 0;
+
+struct new_utsname system_utsname =
+{
+  UTS_SYSNAME, UTS_NODENAME, UTS_RELEASE, UTS_VERSION,
+  UTS_MACHINE, UTS_DOMAINNAME
+};
+
+const char *linux_banner =
+"Linux version " UTS_RELEASE " (" LINUX_COMPILE_BY "@"
+LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n";