--- zzzz-none-000/linux-3.10.107/arch/cris/mm/init.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/cris/mm/init.c	2021-02-04 17:41:59.000000000 +0000
@@ -11,17 +11,16 @@
 #include <linux/gfp.h>
 #include <linux/init.h>
 #include <linux/bootmem.h>
+#include <linux/proc_fs.h>
+#include <linux/kcore.h>
 #include <asm/tlb.h>
 #include <asm/sections.h>
 
 unsigned long empty_zero_page;
+EXPORT_SYMBOL(empty_zero_page);
 
-void __init
-mem_init(void)
+void __init mem_init(void)
 {
-	int codesize, reservedpages, datasize, initsize;
-	unsigned long tmp;
-
 	BUG_ON(!mem_map);
 
 	/* max/min_low_pfn was set by setup.c
@@ -29,41 +28,41 @@
 	 *
 	 * high_memory was also set in setup.c
 	 */
+	max_mapnr = max_low_pfn - min_low_pfn;
+        free_all_bootmem();
+	mem_init_print_info(NULL);
+}
+
+/* Free a range of init pages. Virtual addresses. */
+
+void free_init_pages(const char *what, unsigned long begin, unsigned long end)
+{
+	unsigned long addr;
 
-	max_mapnr = num_physpages = max_low_pfn - min_low_pfn;
- 
-	/* this will put all memory onto the freelists */
-        totalram_pages = free_all_bootmem();
-
-	reservedpages = 0;
-	for (tmp = 0; tmp < max_mapnr; tmp++) {
-		/*
-                 * Only count reserved RAM pages
-                 */
-		if (PageReserved(mem_map + tmp))
-			reservedpages++;
+	for (addr = begin; addr < end; addr += PAGE_SIZE) {
+		ClearPageReserved(virt_to_page(addr));
+		init_page_count(virt_to_page(addr));
+		free_page(addr);
+		totalram_pages++;
 	}
 
-	codesize =  (unsigned long) &_etext - (unsigned long) &_stext;
-        datasize =  (unsigned long) &_edata - (unsigned long) &_etext;
-        initsize =  (unsigned long) &__init_end - (unsigned long) &__init_begin;
-	
-        printk(KERN_INFO
-               "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, "
-	       "%dk init)\n" ,
-	       nr_free_pages() << (PAGE_SHIFT-10),
-	       max_mapnr << (PAGE_SHIFT-10),
-	       codesize >> 10,
-	       reservedpages << (PAGE_SHIFT-10),
-	       datasize >> 10,
-	       initsize >> 10
-               );
+	printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
+}
+
+/* Free the pages occupied by initialization code. */
+
+void free_initmem(void)
+{
+	free_initmem_default(-1);
 }
 
-/* free the pages occupied by initialization code */
+/* Free the pages occupied by initrd code. */
 
-void 
-free_initmem(void)
+#ifdef CONFIG_BLK_DEV_INITRD
+void free_initrd_mem(unsigned long start, unsigned long end)
 {
-	free_initmem_default(0);
+	free_init_pages("initrd memory",
+	                start,
+	                end);
 }
+#endif