1 #ifndef HW_XTENSA_BOOTPARAM_H 2 #define HW_XTENSA_BOOTPARAM_H 3 4 #include "exec/cpu-common.h" 5 6 #define BP_TAG_COMMAND_LINE 0x1001 /* command line (0-terminated string)*/ 7 #define BP_TAG_INITRD 0x1002 /* ramdisk addr and size (bp_meminfo) */ 8 #define BP_TAG_MEMORY 0x1003 /* memory addr and size (bp_meminfo) */ 9 #define BP_TAG_SERIAL_BAUDRATE 0x1004 /* baud rate of current console. */ 10 #define BP_TAG_SERIAL_PORT 0x1005 /* serial device of current console */ 11 #define BP_TAG_FDT 0x1006 /* flat device tree addr */ 12 13 #define BP_TAG_FIRST 0x7B0B /* first tag with a version number */ 14 #define BP_TAG_LAST 0x7E0B /* last tag */ 15 16 typedef struct BpTag { 17 uint16_t tag; 18 uint16_t size; 19 } BpTag; 20 21 typedef struct BpMemInfo { 22 uint32_t type; 23 uint32_t start; 24 uint32_t end; 25 } BpMemInfo; 26 27 #define MEMORY_TYPE_CONVENTIONAL 0x1000 28 #define MEMORY_TYPE_NONE 0x2000 29 30 static inline size_t get_tag_size(size_t data_size) 31 { 32 return data_size + sizeof(BpTag) + 4; 33 } 34 35 static inline ram_addr_t put_tag(ram_addr_t addr, uint16_t tag, 36 size_t size, const void *data) 37 { 38 BpTag bp_tag = { 39 .tag = tswap16(tag), 40 .size = tswap16((size + 3) & ~3), 41 }; 42 43 cpu_physical_memory_write(addr, &bp_tag, sizeof(bp_tag)); 44 addr += sizeof(bp_tag); 45 cpu_physical_memory_write(addr, data, size); 46 addr += (size + 3) & ~3; 47 48 return addr; 49 } 50 51 #endif 52