. made memory parsing function into a library call

(moved 'struct memory' to <minix/type.h> for this library call)
 . removed some debugging messages from pci library

lib/sysutil/env_parse.c

@@ -1,5 +1,6 @@
 #include "sysutil.h"
 #include <stdlib.h>
+#include <env.h>
 #include <string.h>
 
 
@@ -88,4 +89,53 @@ badenv:
   return -1;
 }
 
+/*=========================================================================*
+ *				env_memory_parse			   *
+ *=========================================================================*/
 
+PUBLIC int env_memory_parse(mem_chunks, maxchunks)
+struct memory *mem_chunks;	/* where to store the memory bits */
+int maxchunks;			/* how many were found */
+{
+  int i, done = 0;
+  char *s;
+  struct memory *memp;
+  char memstr[100], *end;
+
+  /* Initialize everything to zero. */
+  for (i = 0; i < maxchunks; i++) {
+	memp = &mem_chunks[i];		/* next mem chunk is stored here */
+	memp->base = memp->size = 0;
+  }
+
+  /* The available memory is determined by MINIX' boot loader as a list of 
+   * (base:size)-pairs in boothead.s. The 'memory' boot variable is set in
+   * in boot.s.  The format is "b0:s0,b1:s1,b2:s2", where b0:s0 is low mem,
+   * b1:s1 is mem between 1M and 16M, b2:s2 is mem above 16M. Pairs b1:s1 
+   * and b2:s2 are combined if the memory is adjacent. 
+   */
+  if(env_get_param("memory", memstr, sizeof(memstr)-1) != OK)
+	return -1;
+  s = memstr;
+  for (i = 0; i < maxchunks && !done; i++) {
+  	phys_bytes base = 0, size = 0, limit;
+	memp = &mem_chunks[i];		/* next mem chunk is stored here */
+	if (*s != 0) {			/* get fresh data, unless at end */	
+
+	    /* Read fresh base and expect colon as next char. */ 
+	    base = strtoul(s, &end, 0x10);		/* get number */
+	    if (end != s && *end == ':') s = ++end;	/* skip ':' */ 
+	    else *s=0;			/* terminate, should not happen */
+
+	    /* Read fresh size and expect comma or assume end. */ 
+	    size = strtoul(s, &end, 0x10);		/* get number */
+	    if (end != s && *end == ',') s = ++end;	/* skip ',' */
+	    else done = 1;
+	}
+	if (base + size <= base) continue;
+	memp->base = base;
+	memp->size = size;
+  }
+
+  return OK;
+}