components: emit the RAM hull as a single bounded range

sysfs_devicetree_memory and sysfs_firmware_memmap emitted the hull's low
edge as a base record and its high edge as a separate top record, so one
bounded measurement reached the engine as two independent records of the
same (phys, ram) region. Emit a single kasld_result_range when both edges
are known; the low-edge-only case still emits a bare base.

Author: bcoles

src/components/sysfs_devicetree_memory.c

@@ -230,11 +230,13 @@ int main(void) {
   kasld_info("device tree: %d memory region(s)", count);
 
   kasld_info("lowest DRAM start:  0x%016lx", lo);
-  kasld_result_base(KASLD_TYPE_PHYS, REGION_RAM, lo, NULL, CONF_PARSED);
-
   if (hi && hi != lo) {
     kasld_info("highest DRAM end:   0x%016lx", hi);
-    kasld_result_top(KASLD_TYPE_PHYS, REGION_RAM, hi, NULL, CONF_PARSED);
+    /* Both edges known: one bounded range (validated lo <= hi at the source).
+     */
+    kasld_result_range(KASLD_TYPE_PHYS, REGION_RAM, lo, hi, NULL, CONF_PARSED);
+  } else {
+    kasld_result_base(KASLD_TYPE_PHYS, REGION_RAM, lo, NULL, CONF_PARSED);
   }
 
 #ifdef phys_to_directmap_virt

src/components/sysfs_firmware_memmap.c

@@ -130,11 +130,13 @@ int main(void) {
   kasld_info("firmware memmap: %d System RAM entries", count);
 
   kasld_info("lowest System RAM start:  0x%016lx", lo);
-  kasld_result_base(KASLD_TYPE_PHYS, REGION_RAM, lo, NULL, CONF_PARSED);
-
   if (hi && hi != lo) {
     kasld_info("highest System RAM end:   0x%016lx", hi);
-    kasld_result_top(KASLD_TYPE_PHYS, REGION_RAM, hi, NULL, CONF_PARSED);
+    /* Both edges known: one bounded range (validated lo <= hi at the source).
+     */
+    kasld_result_range(KASLD_TYPE_PHYS, REGION_RAM, lo, hi, NULL, CONF_PARSED);
+  } else {
+    kasld_result_base(KASLD_TYPE_PHYS, REGION_RAM, lo, NULL, CONF_PARSED);
   }
 
 #ifdef phys_to_directmap_virt

tests/test_sysfs_devicetree_memory.c

@@ -138,8 +138,9 @@ static void test_complete_map_emits_hull_and_extents(void) {
   rm_memory_node("memory@0");
   rm_memory_node("memory@1");
 
-  assert(strstr(cap, "ram pos=base conf=parsed lo=0x40000000") != NULL);
-  assert(strstr(cap, "ram pos=top conf=parsed hi=0xa0000000") != NULL);
+  /* Both edges known → a single bounded range (pos=base carrying lo and hi). */
+  assert(strstr(cap, "ram pos=base conf=parsed lo=0x40000000 hi=0xa0000000") !=
+         NULL);
   assert(strstr(cap, "ram pos=extent") != NULL);
 }
 
@@ -166,8 +167,8 @@ static void test_overflow_emits_hull_only(void) {
   rm_memory_node("memory@0");
   rm_memory_node("memory@1");
 
-  assert(strstr(cap, "ram pos=base") != NULL);
-  assert(strstr(cap, "ram pos=top") != NULL);
+  /* Hull only, as a bounded range (pos=base with both edges); no covering. */
+  assert(strstr(cap, "ram pos=base conf=parsed lo=0x40000000 hi=") != NULL);
   assert(strstr(cap, "ram pos=extent") == NULL);
 }