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
get_tag_size(size_t data_size)30 static inline size_t get_tag_size(size_t data_size)
31 {
32 return data_size + sizeof(BpTag) + 4;
33 }
34
put_tag(ram_addr_t addr,uint16_t tag,size_t size,const void * data)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