arch/m68k/include/asm/openprom.h

Source file repositories/reference/linux-study-clean/arch/m68k/include/asm/openprom.h

File Facts

System
Linux kernel
Corpus path
arch/m68k/include/asm/openprom.h
Extension
.h
Size
8175 bytes
Lines
314
Domain
Architecture Layer
Bucket
arch/m68k
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct linux_dev_v0_funcs {
	int (*v0_devopen)(char *device_str);
	int (*v0_devclose)(int dev_desc);
	int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
	int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
	int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf);
	int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf);
	int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
	int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
	int (*v0_seekdev)(int dev_desc, long logical_offst, int from);
};

/* V2 and later prom device operations. */
struct linux_dev_v2_funcs {
	int (*v2_inst2pkg)(int d);	/* Convert ihandle to phandle */
	char * (*v2_dumb_mem_alloc)(char *va, unsigned sz);
	void (*v2_dumb_mem_free)(char *va, unsigned sz);

	/* To map devices into virtual I/O space. */
	char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz);
	void (*v2_dumb_munmap)(char *virta, unsigned size);

	int (*v2_dev_open)(char *devpath);
	void (*v2_dev_close)(int d);
	int (*v2_dev_read)(int d, char *buf, int nbytes);
	int (*v2_dev_write)(int d, char *buf, int nbytes);
	int (*v2_dev_seek)(int d, int hi, int lo);

	/* Never issued (multistage load support) */
	void (*v2_wheee2)(void);
	void (*v2_wheee3)(void);
};

struct linux_mlist_v0 {
	struct linux_mlist_v0 *theres_more;
	char *start_adr;
	unsigned num_bytes;
};

struct linux_mem_v0 {
	struct linux_mlist_v0 **v0_totphys;
	struct linux_mlist_v0 **v0_prommap;
	struct linux_mlist_v0 **v0_available; /* What we can use */
};

/* Arguments sent to the kernel from the boot prompt. */
struct linux_arguments_v0 {
	char *argv[8];
	char args[100];
	char boot_dev[2];
	int boot_dev_ctrl;
	int boot_dev_unit;
	int dev_partition;
	char *kernel_file_name;
	void *aieee1;           /* XXX */
};

/* V2 and up boot things. */
struct linux_bootargs_v2 {
	char **bootpath;
	char **bootargs;
	int *fd_stdin;
	int *fd_stdout;
};

#if defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
struct linux_romvec {
	char		*pv_initsp;
	int		(*pv_startmon)(void);

	int		*diagberr;

	struct linux_arguments_v0 **pv_v0bootargs;
	unsigned	*pv_sun3mem;

	unsigned char	(*pv_getchar)(void);
	int		(*pv_putchar)(int ch);
	int		(*pv_nbgetchar)(void);
	int		(*pv_nbputchar)(int ch);
	unsigned char	*pv_echo;
	unsigned char	*pv_insource;
	unsigned char	*pv_outsink;

	int		(*pv_getkey)(void);
	int		(*pv_initgetkey)(void);
	unsigned int	*pv_translation;
	unsigned char	*pv_keybid;
	int		*pv_screen_x;
	int		*pv_screen_y;
	struct keybuf	*pv_keybuf;

Annotation

Implementation Notes