You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
319 lines
10 KiB
319 lines
10 KiB
/* $Id: oplib.h,v 1.23 2001/12/21 00:54:31 davem Exp $
|
|
* 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 */
|
|
PROM_AP1000, /* actually no prom at all */
|
|
PROM_SUN4, /* Old sun4 proms are totally different, but we'll shoehorn it to make it fit */
|
|
};
|
|
|
|
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 int prom_root_node;
|
|
|
|
/* PROM stdin and stdout */
|
|
extern int prom_stdin, prom_stdout;
|
|
|
|
/* 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.
|
|
*/
|
|
extern void prom_init(struct linux_romvec *rom_ptr);
|
|
|
|
/* Boot argument acquisition, returns the boot command line string. */
|
|
extern char *prom_getbootargs(void);
|
|
|
|
/* Device utilities. */
|
|
|
|
/* Map and unmap devices in IO space at virtual addresses. Note that the
|
|
* virtual address you pass is a request and the prom may put your mappings
|
|
* somewhere else, so check your return value as that is where your new
|
|
* mappings really are!
|
|
*
|
|
* Another note, these are only available on V2 or higher proms!
|
|
*/
|
|
extern char *prom_mapio(char *virt_hint, int io_space, unsigned int phys_addr, unsigned int num_bytes);
|
|
extern void prom_unmapio(char *virt_addr, unsigned int num_bytes);
|
|
|
|
/* Device operations. */
|
|
|
|
/* Open the device described by the passed string. Note, that the format
|
|
* of the string is different on V0 vs. V2->higher proms. The caller must
|
|
* know what he/she is doing! Returns the device descriptor, an int.
|
|
*/
|
|
extern int prom_devopen(char *device_string);
|
|
|
|
/* Close a previously opened device described by the passed integer
|
|
* descriptor.
|
|
*/
|
|
extern int prom_devclose(int device_handle);
|
|
|
|
/* Do a seek operation on the device described by the passed integer
|
|
* descriptor.
|
|
*/
|
|
extern void prom_seek(int device_handle, unsigned int seek_hival,
|
|
unsigned int seek_lowval);
|
|
|
|
/* Machine memory configuration routine. */
|
|
|
|
/* This function returns a V0 format memory descriptor table, it has three
|
|
* entries. One for the total amount of physical ram on the machine, one
|
|
* for the amount of physical ram available, and one describing the virtual
|
|
* areas which are allocated by the prom. So, in a sense the physical
|
|
* available is a calculation of the total physical minus the physical mapped
|
|
* by the prom with virtual mappings.
|
|
*
|
|
* These lists are returned pre-sorted, this should make your life easier
|
|
* since the prom itself is way too lazy to do such nice things.
|
|
*/
|
|
extern struct linux_mem_v0 *prom_meminfo(void);
|
|
|
|
/* Miscellaneous routines, don't really fit in any category per se. */
|
|
|
|
/* Reboot the machine with the command line passed. */
|
|
extern void prom_reboot(char *boot_command);
|
|
|
|
/* Evaluate the forth string passed. */
|
|
extern void prom_feval(char *forth_string);
|
|
|
|
/* Enter the prom, with possibility of continuation with the 'go'
|
|
* command in newer proms.
|
|
*/
|
|
extern void prom_cmdline(void);
|
|
|
|
/* Enter the prom, with no chance of continuation for the stand-alone
|
|
* which calls this.
|
|
*/
|
|
extern void prom_halt(void) __attribute__ ((noreturn));
|
|
|
|
/* 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);
|
|
extern 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.
|
|
*/
|
|
extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
|
|
|
|
/* Get the prom major version. */
|
|
extern int prom_version(void);
|
|
|
|
/* Get the prom plugin revision. */
|
|
extern int prom_getrev(void);
|
|
|
|
/* Get the prom firmware revision. */
|
|
extern int prom_getprev(void);
|
|
|
|
/* Character operations to/from the console.... */
|
|
|
|
/* Non-blocking get character from console. */
|
|
extern int prom_nbgetchar(void);
|
|
|
|
/* Non-blocking put character to console. */
|
|
extern int prom_nbputchar(char character);
|
|
|
|
/* Blocking get character from console. */
|
|
extern char prom_getchar(void);
|
|
|
|
/* Blocking put character to console. */
|
|
extern void prom_putchar(char character);
|
|
|
|
/* Prom's internal routines, don't use in kernel/boot code. */
|
|
extern void prom_printf(char *fmt, ...);
|
|
extern void prom_write(const char *buf, unsigned int len);
|
|
|
|
/* Query for input device type */
|
|
|
|
enum prom_input_device {
|
|
PROMDEV_IKBD, /* input from keyboard */
|
|
PROMDEV_ITTYA, /* input from ttya */
|
|
PROMDEV_ITTYB, /* input from ttyb */
|
|
PROMDEV_IRSC, /* input from rsc */
|
|
PROMDEV_I_UNK,
|
|
};
|
|
|
|
extern enum prom_input_device prom_query_input_device(void);
|
|
|
|
/* Query for output device type */
|
|
|
|
enum prom_output_device {
|
|
PROMDEV_OSCREEN, /* to screen */
|
|
PROMDEV_OTTYA, /* to ttya */
|
|
PROMDEV_OTTYB, /* to ttyb */
|
|
PROMDEV_ORSC, /* to rsc */
|
|
PROMDEV_O_UNK,
|
|
};
|
|
|
|
extern enum prom_output_device prom_query_output_device(void);
|
|
|
|
/* Multiprocessor operations... */
|
|
|
|
/* Start the CPU with the given device tree node, context table, and context
|
|
* at the passed program counter.
|
|
*/
|
|
extern int prom_startcpu(int cpunode, struct linux_prom_registers *context_table,
|
|
int context, char *program_counter);
|
|
|
|
/* Stop the CPU with the passed device tree node. */
|
|
extern int prom_stopcpu(int cpunode);
|
|
|
|
/* Idle the CPU with the passed device tree node. */
|
|
extern int prom_idlecpu(int cpunode);
|
|
|
|
/* Re-Start the CPU with the passed device tree node. */
|
|
extern int prom_restartcpu(int cpunode);
|
|
|
|
/* PROM memory allocation facilities... */
|
|
|
|
/* Allocated at possibly the given virtual address a chunk of the
|
|
* indicated size.
|
|
*/
|
|
extern char *prom_alloc(char *virt_hint, unsigned int size);
|
|
|
|
/* Free a previously allocated chunk. */
|
|
extern void prom_free(char *virt_addr, unsigned int size);
|
|
|
|
/* Sun4/sun4c specific memory-management startup hook. */
|
|
|
|
/* Map the passed segment in the given context at the passed
|
|
* virtual address.
|
|
*/
|
|
extern void prom_putsegment(int context, unsigned long virt_addr,
|
|
int physical_segment);
|
|
|
|
|
|
/* PROM device tree traversal functions... */
|
|
|
|
#ifdef PROMLIB_INTERNAL
|
|
|
|
/* Internal version of prom_getchild. */
|
|
extern int __prom_getchild(int parent_node);
|
|
|
|
/* Internal version of prom_getsibling. */
|
|
extern int __prom_getsibling(int node);
|
|
|
|
#endif
|
|
|
|
|
|
/* Get the child node of the given node, or zero if no child exists. */
|
|
extern int prom_getchild(int parent_node);
|
|
|
|
/* Get the next sibling node of the given node, or zero if no further
|
|
* siblings exist.
|
|
*/
|
|
extern int prom_getsibling(int node);
|
|
|
|
/* Get the length, at the passed node, of the given property type.
|
|
* Returns -1 on error (ie. no such property at this node).
|
|
*/
|
|
extern int prom_getproplen(int thisnode, 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.
|
|
*/
|
|
extern int __must_check prom_getproperty(int thisnode, char *property,
|
|
char *prop_buffer, int propbuf_size);
|
|
|
|
/* Acquire an integer property. */
|
|
extern int prom_getint(int node, char *property);
|
|
|
|
/* Acquire an integer property, with a default value. */
|
|
extern int prom_getintdefault(int node, char *property, int defval);
|
|
|
|
/* Acquire a boolean property, 0=FALSE 1=TRUE. */
|
|
extern int prom_getbool(int node, char *prop);
|
|
|
|
/* Acquire a string property, null string on error. */
|
|
extern void prom_getstring(int node, char *prop, char *buf, int bufsize);
|
|
|
|
/* Does the passed node have the given "name"? YES=1 NO=0 */
|
|
extern int prom_nodematch(int thisnode, char *name);
|
|
|
|
/* Puts in buffer a prom name in the form name@x,y or name (x for which_io
|
|
* and y for first regs phys address
|
|
*/
|
|
extern int prom_getname(int node, char *buf, int buflen);
|
|
|
|
/* Search all siblings starting at the passed node for "name" matching
|
|
* the given string. Returns the node on success, zero on failure.
|
|
*/
|
|
extern int prom_searchsiblings(int node_start, char *name);
|
|
|
|
/* Return the first property type, as a string, for the given node.
|
|
* Returns a null string on error.
|
|
*/
|
|
extern char *prom_firstprop(int node, char *buffer);
|
|
|
|
/* Returns the next property after the passed property for the given
|
|
* node. Returns null string on failure.
|
|
*/
|
|
extern char *prom_nextprop(int node, char *prev_property, char *buffer);
|
|
|
|
/* Returns phandle of the path specified */
|
|
extern int prom_finddevice(char *name);
|
|
|
|
/* Returns 1 if the specified node has given property. */
|
|
extern int prom_node_has_property(int node, char *property);
|
|
|
|
/* Set the indicated property at the given node with the passed value.
|
|
* Returns the number of bytes of your value that the prom took.
|
|
*/
|
|
extern int prom_setprop(int node, char *prop_name, char *prop_value,
|
|
int value_size);
|
|
|
|
extern int prom_pathtoinode(char *path);
|
|
extern int prom_inst2pkg(int);
|
|
|
|
/* Dorking with Bus ranges... */
|
|
|
|
/* Apply promlib probes OBIO ranges to registers. */
|
|
extern 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. */
|
|
extern void prom_apply_generic_ranges(int node, int parent,
|
|
struct linux_prom_registers *sbusregs, int nregs);
|
|
|
|
/* CPU probing helpers. */
|
|
int cpu_find_by_instance(int instance, int *prom_node, int *mid);
|
|
int cpu_find_by_mid(int mid, int *prom_node);
|
|
int cpu_get_hwmid(int prom_node);
|
|
|
|
extern spinlock_t prom_lock;
|
|
|
|
#endif /* !(__SPARC_OPLIB_H) */
|
|
|