1 files changed, 40 insertions, 0 deletions
diff --git a/include/asm-i386/mach-default/setup_arch_post.h b/include/asm-i386/mach-default/setup_arch_post.h
new file mode 100644
index 000000000000..2fc4888721f6
--- /dev/null
+++ b/include/asm-i386/mach-default/setup_arch_post.h
@@ -0,0 +1,40 @@
+/**
+ * machine_specific_memory_setup - Hook for machine specific memory setup.
+ *
+ * Description:
+ *	This is included late in kernel/setup.c so that it can make
+ *	use of all of the static functions.
+ **/
+
+static char * __init machine_specific_memory_setup(void)
+{
+	char *who;
+
+
+	who = "BIOS-e820";
+
+	/*
+	 * Try to copy the BIOS-supplied E820-map.
+	 *
+	 * Otherwise fake a memory map; one section from 0k->640k,
+	 * the next section from 1mb->appropriate_mem_k
+	 */
+	sanitize_e820_map(E820_MAP, &E820_MAP_NR);
+	if (copy_e820_map(E820_MAP, E820_MAP_NR) < 0) {
+		unsigned long mem_size;
+
+		/* compare results from other methods and take the greater */
+		if (ALT_MEM_K < EXT_MEM_K) {
+			mem_size = EXT_MEM_K;
+			who = "BIOS-88";
+		} else {
+			mem_size = ALT_MEM_K;
+			who = "BIOS-e801";
+		}
+
+		e820.nr_map = 0;
+		add_memory_region(0, LOWMEMSIZE(), E820_RAM);
+		add_memory_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
+  	}
+	return who;
+}