arch/powerpc/boot/ops.h

Source file repositories/reference/linux-study-clean/arch/powerpc/boot/ops.h

File Facts

System
Linux kernel
Corpus path
arch/powerpc/boot/ops.h
Extension
.h
Size
7437 bytes
Lines
260
Domain
Architecture Layer
Bucket
arch/powerpc
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 platform_ops {
	void	(*fixups)(void);
	void	(*image_hdr)(const void *);
	void *	(*malloc)(unsigned long size);
	void	(*free)(void *ptr);
	void *	(*realloc)(void *ptr, unsigned long size);
	void	(*exit)(void);
	void *	(*vmlinux_alloc)(unsigned long size);
	void  	(*kentry)(unsigned long fdt_addr, void *vmlinux_addr);
};
extern struct platform_ops platform_ops;

/* Device Tree operations */
struct dt_ops {
	void *	(*finddevice)(const char *name);
	int	(*getprop)(const void *phandle, const char *name, void *buf,
			const int buflen);
	int	(*setprop)(const void *phandle, const char *name,
			const void *buf, const int buflen);
	int (*del_node)(const void *phandle);
	void *(*get_parent)(const void *phandle);
	/* The node must not already exist. */
	void *(*create_node)(const void *parent, const char *name);
	void *(*find_node_by_prop_value)(const void *prev,
	                                 const char *propname,
	                                 const char *propval, int proplen);
	void *(*find_node_by_compatible)(const void *prev,
	                                 const char *compat);
	unsigned long (*finalize)(void);
	char *(*get_path)(const void *phandle, char *buf, int len);
};
extern struct dt_ops dt_ops;

/* Console operations */
struct console_ops {
	int	(*open)(void);
	void	(*write)(const char *buf, int len);
	void	(*edit_cmdline)(char *buf, int len, unsigned int getline_timeout);
	void	(*close)(void);
	void	*data;
};
extern struct console_ops console_ops;

/* Serial console operations */
struct serial_console_data {
	int		(*open)(void);
	void		(*putc)(unsigned char c);
	unsigned char	(*getc)(void);
	u8		(*tstc)(void);
	void		(*close)(void);
};

struct loader_info {
	void *promptr;
	unsigned long initrd_addr, initrd_size;
	char *cmdline;
	int cmdline_len;
};
extern struct loader_info loader_info;

void start(void);
void fdt_init(void *blob);
int serial_console_init(void);
int ns16550_console_init(void *devp, struct serial_console_data *scdp);
int cpm_console_init(void *devp, struct serial_console_data *scdp);
int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp);
int opal_console_init(void *devp, struct serial_console_data *scdp);
void *simple_alloc_init(char *base, unsigned long heap_size,
			unsigned long granularity, unsigned long max_allocs);
extern void flush_cache(void *, unsigned long);
int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size);
int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr);
int dt_is_compatible(void *node, const char *compat);
void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize);
int dt_get_virtual_reg(void *node, void **addr, int nres);

static inline void *finddevice(const char *name)
{
	return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL;
}

static inline int getprop(void *devp, const char *name, void *buf, int buflen)
{
	return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1;
}

static inline int setprop(void *devp, const char *name,
                          const void *buf, int buflen)
{
	return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1;

Annotation

Implementation Notes