--- zzzz-none-000/linux-4.4.60/mm/memblock.c	2017-04-08 07:53:53.000000000 +0000
+++ hawkeye-5590-729/linux-4.4.60/mm/memblock.c	2022-03-30 14:21:53.000000000 +0000
@@ -19,6 +19,7 @@
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
 #include <linux/memblock.h>
+#include <linux/crashlog.h>
 
 #include <asm-generic/sections.h>
 #include <linux/io.h>
@@ -503,6 +504,8 @@
 	memblock_set_region_node(rgn, nid);
 	type->cnt++;
 	type->total_size += size;
+	if (type == &memblock.memory && idx == 0)
+		crashlog_init_memblock(base, size);
 }
 
 /**
@@ -536,6 +539,7 @@
 	/* special case for empty array */
 	if (type->regions[0].size == 0) {
 		WARN_ON(type->cnt != 1 || type->total_size);
+		type->start_base = base;
 		type->regions[0].base = base;
 		type->regions[0].size = size;
 		type->regions[0].flags = flags;
@@ -1457,7 +1461,7 @@
 /* lowest address */
 phys_addr_t __init_memblock memblock_start_of_DRAM(void)
 {
-	return memblock.memory.regions[0].base;
+	return memblock.memory.start_base;
 }
 
 phys_addr_t __init_memblock memblock_end_of_DRAM(void)