183 lines
5.9 KiB
C
183 lines
5.9 KiB
C
/*
|
|
* oplib.h: Describes the interface and available routines in the
|
|
* Linux Prom library.
|
|
*
|
|
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
|
*/
|
|
|
|
#ifndef __SPARC_OPLIB_H
|
|
#define __SPARC_OPLIB_H
|
|
|
|
#include <asm/openprom.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/compiler.h>
|
|
|
|
/* The master romvec pointer... */
|
|
extern struct linux_romvec *romvec;
|
|
|
|
/* Enumeration to describe the prom major version we have detected. */
|
|
enum prom_major_version {
|
|
PROM_V0, /* Original sun4c V0 prom */
|
|
PROM_V2, /* sun4c and early sun4m V2 prom */
|
|
PROM_V3, /* sun4m and later, up to sun4d/sun4e machines V3 */
|
|
PROM_P1275, /* IEEE compliant ISA based Sun PROM, only sun4u */
|
|
};
|
|
|
|
extern enum prom_major_version prom_vers;
|
|
/* Revision, and firmware revision. */
|
|
extern unsigned int prom_rev, prom_prev;
|
|
|
|
/* Root node of the prom device tree, this stays constant after
|
|
* initialization is complete.
|
|
*/
|
|
extern phandle prom_root_node;
|
|
|
|
/* Pointer to prom structure containing the device tree traversal
|
|
* and usage utility functions. Only prom-lib should use these,
|
|
* users use the interface defined by the library only!
|
|
*/
|
|
extern struct linux_nodeops *prom_nodeops;
|
|
|
|
/* The functions... */
|
|
|
|
/* You must call prom_init() before using any of the library services,
|
|
* preferably as early as possible. Pass it the romvec pointer.
|
|
*/
|
|
void prom_init(struct linux_romvec *rom_ptr);
|
|
|
|
/* Boot argument acquisition, returns the boot command line string. */
|
|
char *prom_getbootargs(void);
|
|
|
|
/* Miscellaneous routines, don't really fit in any category per se. */
|
|
|
|
/* Reboot the machine with the command line passed. */
|
|
void prom_reboot(char *boot_command);
|
|
|
|
/* Evaluate the forth string passed. */
|
|
void prom_feval(char *forth_string);
|
|
|
|
/* Enter the prom, with possibility of continuation with the 'go'
|
|
* command in newer proms.
|
|
*/
|
|
void prom_cmdline(void);
|
|
|
|
/* Enter the prom, with no chance of continuation for the stand-alone
|
|
* which calls this.
|
|
*/
|
|
void __noreturn prom_halt(void);
|
|
|
|
/* Set the PROM 'sync' callback function to the passed function pointer.
|
|
* When the user gives the 'sync' command at the prom prompt while the
|
|
* kernel is still active, the prom will call this routine.
|
|
*
|
|
* XXX The arguments are different on V0 vs. V2->higher proms, grrr! XXX
|
|
*/
|
|
typedef void (*sync_func_t)(void);
|
|
void prom_setsync(sync_func_t func_ptr);
|
|
|
|
/* Acquire the IDPROM of the root node in the prom device tree. This
|
|
* gets passed a buffer where you would like it stuffed. The return value
|
|
* is the format type of this idprom or 0xff on error.
|
|
*/
|
|
unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
|
|
|
|
/* Get the prom major version. */
|
|
int prom_version(void);
|
|
|
|
/* Get the prom plugin revision. */
|
|
int prom_getrev(void);
|
|
|
|
/* Get the prom firmware revision. */
|
|
int prom_getprev(void);
|
|
|
|
/* Write a buffer of characters to the console. */
|
|
void prom_console_write_buf(const char *buf, int len);
|
|
|
|
/* Prom's internal routines, don't use in kernel/boot code. */
|
|
__printf(1, 2) void prom_printf(const char *fmt, ...);
|
|
void prom_write(const char *buf, unsigned int len);
|
|
|
|
/* Multiprocessor operations... */
|
|
|
|
/* Start the CPU with the given device tree node, context table, and context
|
|
* at the passed program counter.
|
|
*/
|
|
int prom_startcpu(int cpunode, struct linux_prom_registers *context_table,
|
|
int context, char *program_counter);
|
|
|
|
/* Initialize the memory lists based upon the prom version. */
|
|
void prom_meminit(void);
|
|
|
|
/* PROM device tree traversal functions... */
|
|
|
|
/* Get the child node of the given node, or zero if no child exists. */
|
|
phandle prom_getchild(phandle parent_node);
|
|
|
|
/* Get the next sibling node of the given node, or zero if no further
|
|
* siblings exist.
|
|
*/
|
|
phandle prom_getsibling(phandle node);
|
|
|
|
/* Get the length, at the passed node, of the given property type.
|
|
* Returns -1 on error (ie. no such property at this node).
|
|
*/
|
|
int prom_getproplen(phandle thisnode, const char *property);
|
|
|
|
/* Fetch the requested property using the given buffer. Returns
|
|
* the number of bytes the prom put into your buffer or -1 on error.
|
|
*/
|
|
int __must_check prom_getproperty(phandle thisnode, const char *property,
|
|
char *prop_buffer, int propbuf_size);
|
|
|
|
/* Acquire an integer property. */
|
|
int prom_getint(phandle node, char *property);
|
|
|
|
/* Acquire an integer property, with a default value. */
|
|
int prom_getintdefault(phandle node, char *property, int defval);
|
|
|
|
/* Acquire a boolean property, 0=FALSE 1=TRUE. */
|
|
int prom_getbool(phandle node, char *prop);
|
|
|
|
/* Acquire a string property, null string on error. */
|
|
void prom_getstring(phandle node, char *prop, char *buf, int bufsize);
|
|
|
|
/* Search all siblings starting at the passed node for "name" matching
|
|
* the given string. Returns the node on success, zero on failure.
|
|
*/
|
|
phandle prom_searchsiblings(phandle node_start, char *name);
|
|
|
|
/* Returns the next property after the passed property for the given
|
|
* node. Returns null string on failure.
|
|
*/
|
|
char *prom_nextprop(phandle node, char *prev_property, char *buffer);
|
|
|
|
/* Returns phandle of the path specified */
|
|
phandle prom_finddevice(char *name);
|
|
|
|
/* Set the indicated property at the given node with the passed value.
|
|
* Returns the number of bytes of your value that the prom took.
|
|
*/
|
|
int prom_setprop(phandle node, const char *prop_name, char *prop_value,
|
|
int value_size);
|
|
|
|
phandle prom_inst2pkg(int);
|
|
|
|
/* Dorking with Bus ranges... */
|
|
|
|
/* Apply promlib probes OBIO ranges to registers. */
|
|
void prom_apply_obio_ranges(struct linux_prom_registers *obioregs, int nregs);
|
|
|
|
/* Apply ranges of any prom node (and optionally parent node as well) to registers. */
|
|
void prom_apply_generic_ranges(phandle node, phandle parent,
|
|
struct linux_prom_registers *sbusregs, int nregs);
|
|
|
|
void prom_ranges_init(void);
|
|
|
|
/* CPU probing helpers. */
|
|
int cpu_find_by_instance(int instance, phandle *prom_node, int *mid);
|
|
int cpu_find_by_mid(int mid, phandle *prom_node);
|
|
int cpu_get_hwmid(phandle prom_node);
|
|
|
|
extern spinlock_t prom_lock;
|
|
|
|
#endif /* !(__SPARC_OPLIB_H) */
|