#ifndef LINUXBIOS_TABLES_H#define LINUXBIOS_TABLES_H #include <stdint.h> /* The linuxbios table information is for conveying information * from the firmware to the loaded OS image.  Primarily this * is expected to be information that cannot be discovered by * other means, such as quering the hardware directly. * * All of the information should be Position Independent Data.   * That is it should be safe to relocated any of the information * without it's meaning/correctnes changing.   For table that * can reasonably be used on multiple architectures the data * size should be fixed.  This should ease the transition between * 32 bit and 64 bit architectures etc. * * The completeness test for the information in this table is: * - Can all of the hardware be detected? * - Are the per motherboard constants available? * - Is there enough to allow a kernel to run that was written before *   a particular motherboard is constructed? (Assuming the kernel *   has drivers for all of the hardware but it does not have *   assumptions on how the hardware is connected together). * * With this test it should be straight forward to determine if a * table entry is required or not.  This should remove much of the * long term compatibility burden as table entries which are * irrelevant or have been replaced by better alternatives may be * dropped.  Of course it is polite and expidite to include extra * table entries and be backwards compatible, but it is not required. */  struct lb_header{	uint8_t  signature[4]; /* LBIO */	uint32_t header_bytes;	uint32_t header_checksum;	uint32_t table_bytes;	uint32_t table_checksum;	uint32_t table_entries;}; /* Every entry in the boot enviroment list will correspond to a boot * info record.  Encoding both type and size.  The type is obviously * so you can tell what it is.  The size allows you to skip that * boot enviroment record if you don't know what it easy.  This allows * forward compatibility with records not yet defined. */struct lb_record {	uint32_t tag;		/* tag ID */	uint32_t size;		/* size of record (in bytes) */}; #define LB_TAG_UNUSED	0x0000 #define LB_TAG_MEMORY	0x0001 struct lb_memory_range {	uint64_t start;	uint64_t size;	uint32_t type;#define LB_MEM_RAM      1#define LB_MEM_RESERVED 2	}; struct lb_memory {	uint32_t tag;	uint32_t size;	struct lb_memory_range map[0];}; #define LB_TAG_HWRPB	0x0002struct lb_hwrpb {	uint32_t tag;	uint32_t size;	uint64_t hwrpb;}; #endif /* LINUXBIOS_TABLES_H */