sgiarcs.h

来自「umon bootloader source code, support mip」· C头文件 代码 · 共 550 行 · 第 1/2 页

	struct param {
#ifdef __MIPSEL__
		unsigned short size;
		unsigned char lsize;
		unsigned char bsize;
#else /* !(__MIPSEL__) */
		unsigned char bsize;
		unsigned char lsize;
		unsigned short size;
#endif
	} info;
	unsigned long allinfo;
};

/* Configuration data. */
struct linux_cdata {
	char *name;
	int mlen;
	enum linux_devtypes type;
};

/* Common SGI ARCS firmware file descriptors. */
#define SGIPROM_STDIN     0
#define SGIPROM_STDOUT    1

/* Common SGI ARCS firmware file types. */
#define SGIPROM_ROFILE    0x01  /* read-only file */
#define SGIPROM_HFILE     0x02  /* hidden file */
#define SGIPROM_SFILE     0x04  /* System file */
#define SGIPROM_AFILE     0x08  /* Archive file */
#define SGIPROM_DFILE     0x10  /* Directory file */
#define SGIPROM_DELFILE   0x20  /* Deleted file */

/* SGI ARCS boot record information. */
struct sgi_partition {
	unsigned char flag;
#define SGIPART_UNUSED 0x00
#define SGIPART_ACTIVE 0x80

	unsigned char shead, ssect, scyl; /* unused */
	unsigned char systype; /* OS type, Irix or NT */
	unsigned char ehead, esect, ecyl; /* unused */
	unsigned char rsect0, rsect1, rsect2, rsect3;
	unsigned char tsect0, tsect1, tsect2, tsect3;
};

#define SGIBBLOCK_MAGIC   0xaa55
#define SGIBBLOCK_MAXPART 0x0004

struct sgi_bootblock {
	unsigned char _unused[446];
	struct sgi_partition partitions[SGIBBLOCK_MAXPART];
	unsigned short magic;
};

/* BIOS parameter block. */
struct sgi_bparm_block {
	unsigned short bytes_sect;    /* bytes per sector */
	unsigned char  sect_clust;    /* sectors per cluster */
	unsigned short sect_resv;     /* reserved sectors */
	unsigned char  nfats;         /* # of allocation tables */
	unsigned short nroot_dirents; /* # of root directory entries */
	unsigned short sect_volume;   /* sectors in volume */
	unsigned char  media_type;    /* media descriptor */
	unsigned short sect_fat;      /* sectors per allocation table */
	unsigned short sect_track;    /* sectors per track */
	unsigned short nheads;        /* # of heads */
	unsigned short nhsects;       /* # of hidden sectors */
};

struct sgi_bsector {
	unsigned char   jmpinfo[3];
	unsigned char   manuf_name[8];
	struct sgi_bparm_block info;
};

/* Debugging block used with SGI symmon symbolic debugger. */
#define SMB_DEBUG_MAGIC   0xfeeddead
struct linux_smonblock {
	unsigned long   magic;
	void            (*handler)(void);  /* Breakpoint routine. */
	unsigned long   dtable_base;       /* Base addr of dbg table. */
	int             (*printf)(const char *fmt, ...);
	unsigned long   btable_base;       /* Breakpoint table. */
	unsigned long   mpflushreqs;       /* SMP cache flush request list. */
	unsigned long   ntab;              /* Name table. */
	unsigned long   stab;              /* Symbol table. */
	int             smax;              /* Max # of symbols. */
};

/*
 * Macros for calling a 32-bit ARC implementation from 64-bit code
 */

#if defined(CONFIG_MIPS64) && defined(CONFIG_ARC32)

#define __arc_clobbers							\
	"$2","$3" /* ... */, "$8","$9","$10","$11",			\
	"$12","$13","$14","$15","$16","$24","$25","$31"

#define ARC_CALL0(dest)							\
({	long __res;							\
	long __vec = (long) romvec->dest;				\
	__asm__ __volatile__(						\
	"dsubu\t$29, 32\n\t"						\
	"jalr\t%1\n\t"							\
	"daddu\t$29, 32\n\t"						\
	"move\t%0, $2"							\
	: "=r" (__res), "=r" (__vec)					\
	: "1" (__vec)							\
	: __arc_clobbers, "$4","$5","$6","$7");				\
	(unsigned long) __res;						\
})

#define ARC_CALL1(dest,a1)						\
({	long __res;							\
	register signed int __a1 __asm__("$4") = (int) (long) (a1);	\
	long __vec = (long) romvec->dest;				\
	__asm__ __volatile__(						\
	"dsubu\t$29, 32\n\t"						\
	"jalr\t%1\n\t"							\
	"daddu\t$29, 32\n\t"						\
	"move\t%0, $2"							\
	: "=r" (__res), "=r" (__vec)					\
	: "1" (__vec), "r" (__a1)					\
	: __arc_clobbers, "$5","$6","$7");				\
	(unsigned long) __res;						\
})

#define ARC_CALL2(dest,a1,a2)						\
({	long __res;							\
	register signed int __a1 __asm__("$4") = (int) (long) (a1);	\
	register signed int __a2 __asm__("$5") = (int) (long) (a2);	\
	long __vec = (long) romvec->dest;				\
	__asm__ __volatile__(						\
	"dsubu\t$29, 32\n\t"						\
	"jalr\t%1\n\t"							\
	"daddu\t$29, 32\n\t"						\
	"move\t%0, $2"							\
	: "=r" (__res), "=r" (__vec)					\
	: "1" (__vec), "r" (__a1), "r" (__a2)				\
	: __arc_clobbers, "$6","$7");					\
	__res;								\
})

#define ARC_CALL3(dest,a1,a2,a3)					\
({	long __res;							\
	register signed int __a1 __asm__("$4") = (int) (long) (a1);	\
	register signed int __a2 __asm__("$5") = (int) (long) (a2);	\
	register signed int __a3 __asm__("$6") = (int) (long) (a3);	\
	long __vec = (long) romvec->dest;				\
	__asm__ __volatile__(						\
	"dsubu\t$29, 32\n\t"						\
	"jalr\t%1\n\t"							\
	"daddu\t$29, 32\n\t"						\
	"move\t%0, $2"							\
	: "=r" (__res), "=r" (__vec)					\
	: "1" (__vec), "r" (__a1), "r" (__a2), "r" (__a3)		\
	: __arc_clobbers, "$7");					\
	__res;								\
})

#define ARC_CALL4(dest,a1,a2,a3,a4)					\
({	long __res;							\
	register signed int __a1 __asm__("$4") = (int) (long) (a1);	\
	register signed int __a2 __asm__("$5") = (int) (long) (a2);	\
	register signed int __a3 __asm__("$6") = (int) (long) (a3);	\
	register signed int __a4 __asm__("$7") = (int) (long) (a4);	\
	long __vec = (long) romvec->dest;				\
	__asm__ __volatile__(						\
	"dsubu\t$29, 32\n\t"						\
	"jalr\t%1\n\t"							\
	"daddu\t$29, 32\n\t"						\
	"move\t%0, $2"							\
	: "=r" (__res), "=r" (__vec)					\
	: "1" (__vec), "r" (__a1), "r" (__a2), "r" (__a3), 		\
	  "r" (__a4)							\
	: __arc_clobbers);						\
	__res;								\
})

#define ARC_CALL5(dest,a1,a2,a3,a4,a5)					\
({	long __res;							\
	register signed int __a1 __asm__("$4") = (int) (long) (a1);	\
	register signed int __a2 __asm__("$5") = (int) (long) (a2);	\
	register signed int __a3 __asm__("$6") = (int) (long) (a3);	\
	register signed int __a4 __asm__("$7") = (int) (long) (a4);	\
	register signed int __a5 = (a5);				\
	long __vec = (long) romvec->dest;				\
	__asm__ __volatile__(						\
	"dsubu\t$29, 32\n\t"						\
	"sw\t%7, 16($29)\n\t"						\
	"jalr\t%1\n\t"							\
	"daddu\t$29, 32\n\t"						\
	"move\t%0, $2"							\
	: "=r" (__res), "=r" (__vec)					\
	: "1" (__vec),							\
	  "r" (__a1), "r" (__a2), "r" (__a3), "r" (__a4),		\
	  "r" (__a5)							\
	: __arc_clobbers);						\
	__res;								\
})

#endif /* defined(CONFIG_MIPS64) && defined(CONFIG_ARC32) */

#if (defined(CONFIG_MIPS32) && defined(CONFIG_ARC32)) ||		\
    (defined(CONFIG_MIPS64) && defined(CONFIG_ARC64))

#define ARC_CALL0(dest)							\
({	long __res;							\
	long (*__vec)(void) = (void *) romvec->dest;			\
									\
	__res = __vec();						\
	__res;								\
})

#define ARC_CALL1(dest,a1)						\
({	long __res;							\
	long __a1 = (long) (a1);					\
	long (*__vec)(long) = (void *) romvec->dest;			\
									\
	__res = __vec(__a1);						\
	__res;								\
})

#define ARC_CALL2(dest,a1,a2)						\
({	long __res;							\
	long __a1 = (long) (a1);					\
	long __a2 = (long) (a2);					\
	long (*__vec)(long, long) = (void *) romvec->dest;		\
									\
	__res = __vec(__a1, __a2);					\
	__res;								\
})

#define ARC_CALL3(dest,a1,a2,a3)					\
({	long __res;							\
	long __a1 = (long) (a1);					\
	long __a2 = (long) (a2);					\
	long __a3 = (long) (a3);					\
	long (*__vec)(long, long, long)	= (void *) romvec->dest;	\
									\
	__res = __vec(__a1, __a2, __a3);				\
	__res;								\
})

#define ARC_CALL4(dest,a1,a2,a3,a4)					\
({	long __res;							\
	long __a1 = (long) (a1);					\
	long __a2 = (long) (a2);					\
	long __a3 = (long) (a3);					\
	long __a4 = (long) (a4);					\
	long (*__vec)(long, long, long, long) = (void *) romvec->dest;	\
									\
	__res = __vec(__a1, __a2, __a3, __a4);				\
	__res;								\
})

#define ARC_CALL5(dest,a1,a2,a3,a4,a5)					\
({	long __res;							\
	long __a1 = (long) (a1);					\
	long __a2 = (long) (a2);					\
	long __a3 = (long) (a3);					\
	long __a4 = (long) (a4);					\
	long __a5 = (long) (a5);					\
	long (*__vec)(long, long, long, long, long);			\
	__vec = (void *) romvec->dest;					\
									\
	__res = __vec(__a1, __a2, __a3, __a4, __a5);			\
	__res;								\
})
#endif /* both kernel and ARC either 32-bit or 64-bit */

#endif /* _ASM_SGIARCS_H */