use the verbose=2 boot monitor setting to get extensive output for debugging

kernel/debug.h

@@ -82,4 +82,11 @@
 #define BOOT_VERBOSE(x)
 #endif
 
+#ifdef _SYSTEM
+#define DEBUG_PRINT(params, level) do { \
+	if (verboseboot >= (level)) kprintf params; } while (0)
+#define DEBUGBASIC(params) DEBUG_PRINT(params, VERBOSEBOOT_BASIC)
+#define DEBUGMAX(params)   DEBUG_PRINT(params, VERBOSEBOOT_MAX)
+#endif
+
 #endif /* DEBUG_H */

kernel/glo.h

@@ -47,6 +47,7 @@ EXTERN int minix_panicing;
 EXTERN int locklevel;
 EXTERN char fpu_presence;
 EXTERN char osfxsr_feature;             /* FXSAVE/FXRSTOR instructions support (SSEx) */
+EXTERN int verboseboot;			/* verbose boot, init'ed in cstart */
 #define MAGICTEST 0xC0FFEE23
 EXTERN u32_t magictest;			/* global magic number */
 

kernel/main.c

@@ -40,6 +40,8 @@ PUBLIC void main()
    /* Global value to test segment sanity. */
    magictest = MAGICTEST;
  
+   DEBUGMAX(("main()\n"));
+
   /* Clear the process table. Anounce each slot as empty and set up mappings 
    * for proc_addr() and proc_nr() macros. Do the same for the table with 
    * privilege structures for the system processes. 
@@ -75,6 +77,7 @@ PUBLIC void main()
 	int ipc_to_m, kcalls;
 
 	ip = &image[i];				/* process' attributes */
+	DEBUGMAX(("initializing %s... ", ip->proc_name));
 	rp = proc_addr(ip->proc_nr);		/* get process pointer */
 	ip->endpoint = rp->p_endpoint;		/* ipc endpoint */
 	rp->p_max_priority = ip->priority;	/* max scheduling priority */
@@ -203,15 +206,22 @@ PUBLIC void main()
 	if (rp->p_nr < 0) RTS_SET(rp, RTS_PROC_STOP);
 	RTS_UNSET(rp, RTS_SLOT_FREE); /* remove RTS_SLOT_FREE and schedule */
 	alloc_segments(rp);
+	DEBUGMAX(("done\n"));
   }
 
   /* Architecture-dependent initialization. */
+  DEBUGMAX(("arch_init()... "));
   arch_init();
+  DEBUGMAX(("done\n"));
 
   /* System and processes initialization */
+  DEBUGMAX(("system_init()... "));
   system_init();
+  DEBUGMAX(("done\n"));
   /* Initialize timers handling */
+  DEBUGMAX(("clock_init()... "));
   clock_init();
+  DEBUGMAX(("done\n"));
 
 #if SPROFILE
   sprofiling = 0;      /* we're not profiling until instructed to */
@@ -251,7 +261,9 @@ PUBLIC void main()
   FIXME("PROC check enabled");
 #endif
 
+  DEBUGMAX(("cycles_accounting_init()... "));
   cycles_accounting_init();
+  DEBUGMAX(("done\n"));
 
   restart();
   NOT_REACHABLE;

kernel/start.c

@@ -39,6 +39,12 @@ U16_t parmoff, parmsize;	/* boot parameters offset and length */
   /* Copy the boot parameters to the local buffer. */
   arch_get_params(params_buffer, sizeof(params_buffer));
 
+  /* determine verbosity */
+  if ((value = get_value(params_buffer, VERBOSEBOOTVARNAME)))
+	  verboseboot = atoi(value);
+
+  DEBUGMAX(("cstart\n"));
+
   /* Record miscellaneous information for user-space servers. */
   kinfo.nr_procs = NR_PROCS;
   kinfo.nr_tasks = NR_TASKS;
@@ -97,6 +103,7 @@ U16_t parmoff, parmsize;	/* boot parameters offset and length */
    * reload selectors and call main().
    */
 
+  DEBUGMAX(("intr_init(%d, 0)\n", INTS_MINIX));
   intr_init(INTS_MINIX, 0);
 }