MIPS: Loongson: Register reserved memory pages

Register reserved pages for Loongson family machines.

Signed-off-by: Wu Zhangjin <[e-mail]>
Cc: Linux-MIPS <[e-mail]>
Cc: [e-mail],
Cc: [e-mail]
Cc: Zhang Le <[e-mail]>
Cc: [e-mail],
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/loongson/common/mem.c

···
 
 #include <loongson.h>
 #include <mem.h>
+#include <pci.h>
 
 void __init prom_init_memory(void)
 {
     add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
+
+    add_memory_region(memsize << 20, LOONGSON_PCI_MEM_START - (memsize <<
+			    20), BOOT_MEM_RESERVED);
 #ifdef CONFIG_64BIT
     if (highmemsize > 0)
 	add_memory_region(LOONGSON_HIGHMEM_START,
 		highmemsize << 20, BOOT_MEM_RAM);
+
+    add_memory_region(LOONGSON_PCI_MEM_END + 1, LOONGSON_HIGHMEM_START -
+		    LOONGSON_PCI_MEM_END - 1, BOOT_MEM_RESERVED);
+
 #endif /* CONFIG_64BIT */
 }