--- zzzz-none-000/linux-3.10.107/arch/xtensa/include/asm/bootparam.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/xtensa/include/asm/bootparam.h	2021-02-04 17:41:59.000000000 +0000
@@ -20,7 +20,7 @@
 #define BP_TAG_COMMAND_LINE	0x1001	/* command line (0-terminated string)*/
 #define BP_TAG_INITRD		0x1002	/* ramdisk addr and size (bp_meminfo) */
 #define BP_TAG_MEMORY		0x1003	/* memory addr and size (bp_meminfo) */
-#define BP_TAG_SERIAL_BAUSRATE	0x1004	/* baud rate of current console. */
+#define BP_TAG_SERIAL_BAUDRATE	0x1004	/* baud rate of current console. */
 #define BP_TAG_SERIAL_PORT	0x1005	/* serial device of current console */
 #define BP_TAG_FDT		0x1006	/* flat device tree addr */
 
@@ -37,23 +37,14 @@
 	unsigned long data[0];	/* data */
 } bp_tag_t;
 
-typedef struct meminfo {
+struct bp_meminfo {
 	unsigned long type;
 	unsigned long start;
 	unsigned long end;
-} meminfo_t;
-
-#define SYSMEM_BANKS_MAX 5
+};
 
 #define MEMORY_TYPE_CONVENTIONAL	0x1000
 #define MEMORY_TYPE_NONE		0x2000
 
-typedef struct sysmem_info {
-	int nr_banks;
-	meminfo_t bank[SYSMEM_BANKS_MAX];
-} sysmem_info_t;
-
-extern sysmem_info_t sysmem;
-
 #endif
 #endif