1 #ifndef HW_XTENSA_BOOTPARAM 2 #define HW_XTENSA_BOOTPARAM 3 4 #define BP_TAG_COMMAND_LINE 0x1001 /* command line (0-terminated string)*/ 5 #define BP_TAG_INITRD 0x1002 /* ramdisk addr and size (bp_meminfo) */ 6 #define BP_TAG_MEMORY 0x1003 /* memory addr and size (bp_meminfo) */ 7 #define BP_TAG_SERIAL_BAUDRATE 0x1004 /* baud rate of current console. */ 8 #define BP_TAG_SERIAL_PORT 0x1005 /* serial device of current console */ 9 #define BP_TAG_FDT 0x1006 /* flat device tree addr */ 10 11 #define BP_TAG_FIRST 0x7B0B /* first tag with a version number */ 12 #define BP_TAG_LAST 0x7E0B /* last tag */ 13 14 typedef struct BpTag { 15 uint16_t tag; 16 uint16_t size; 17 } BpTag; 18 19 static inline ram_addr_t put_tag(ram_addr_t addr, uint16_t tag, 20 size_t size, const void *data) 21 { 22 BpTag bp_tag = { 23 .tag = tswap16(tag), 24 .size = tswap16((size + 3) & ~3), 25 }; 26 27 cpu_physical_memory_write(addr, &bp_tag, sizeof(bp_tag)); 28 addr += sizeof(bp_tag); 29 cpu_physical_memory_write(addr, data, size); 30 addr += (size + 3) & ~3; 31 32 return addr; 33 } 34 35 #endif 36