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#ifndef HW_XTENSA_BOOTPARAM
#define HW_XTENSA_BOOTPARAM
#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_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 */
#define BP_TAG_FIRST 0x7B0B /* first tag with a version number */
#define BP_TAG_LAST 0x7E0B /* last tag */
typedef struct BpTag {
uint16_t tag;
uint16_t size;
} BpTag;
static inline size_t get_tag_size(size_t data_size)
{
return data_size + sizeof(BpTag) + 4;
}
static inline ram_addr_t put_tag(ram_addr_t addr, uint16_t tag,
size_t size, const void *data)
{
BpTag bp_tag = {
.tag = tswap16(tag),
.size = tswap16((size + 3) & ~3),
};
cpu_physical_memory_write(addr, &bp_tag, sizeof(bp_tag));
addr += sizeof(bp_tag);
cpu_physical_memory_write(addr, data, size);
addr += (size + 3) & ~3;
return addr;
}
#endif
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