323 lines
10 KiB
C
323 lines
10 KiB
C
/* oplib.h: Describes the interface and available routines in the
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* Linux Prom library.
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*
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* Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
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* Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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*/
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#ifndef __SPARC64_OPLIB_H
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#define __SPARC64_OPLIB_H
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#include <asm/openprom.h>
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/* OBP version string. */
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extern char prom_version[];
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/* Root node of the prom device tree, this stays constant after
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* initialization is complete.
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*/
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extern int prom_root_node;
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/* PROM stdin and stdout */
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extern int prom_stdin, prom_stdout;
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/* /chosen node of the prom device tree, this stays constant after
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* initialization is complete.
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*/
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extern int prom_chosen_node;
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/* Helper values and strings in arch/sparc64/kernel/head.S */
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extern const char prom_peer_name[];
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extern const char prom_compatible_name[];
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extern const char prom_root_compatible[];
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extern const char prom_cpu_compatible[];
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extern const char prom_finddev_name[];
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extern const char prom_chosen_path[];
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extern const char prom_cpu_path[];
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extern const char prom_getprop_name[];
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extern const char prom_mmu_name[];
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extern const char prom_callmethod_name[];
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extern const char prom_translate_name[];
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extern const char prom_map_name[];
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extern const char prom_unmap_name[];
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extern int prom_mmu_ihandle_cache;
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extern unsigned int prom_boot_mapped_pc;
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extern unsigned int prom_boot_mapping_mode;
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extern unsigned long prom_boot_mapping_phys_high, prom_boot_mapping_phys_low;
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struct linux_mlist_p1275 {
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struct linux_mlist_p1275 *theres_more;
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unsigned long start_adr;
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unsigned long num_bytes;
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};
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struct linux_mem_p1275 {
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struct linux_mlist_p1275 **p1275_totphys;
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struct linux_mlist_p1275 **p1275_prommap;
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struct linux_mlist_p1275 **p1275_available; /* What we can use */
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};
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/* The functions... */
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/* You must call prom_init() before using any of the library services,
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* preferably as early as possible. Pass it the romvec pointer.
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*/
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extern void prom_init(void *cif_handler, void *cif_stack);
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/* Boot argument acquisition, returns the boot command line string. */
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extern char *prom_getbootargs(void);
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/* Device utilities. */
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/* Device operations. */
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/* Open the device described by the passed string. Note, that the format
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* of the string is different on V0 vs. V2->higher proms. The caller must
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* know what he/she is doing! Returns the device descriptor, an int.
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*/
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extern int prom_devopen(const char *device_string);
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/* Close a previously opened device described by the passed integer
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* descriptor.
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*/
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extern int prom_devclose(int device_handle);
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/* Do a seek operation on the device described by the passed integer
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* descriptor.
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*/
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extern void prom_seek(int device_handle, unsigned int seek_hival,
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unsigned int seek_lowval);
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/* Miscellaneous routines, don't really fit in any category per se. */
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/* Reboot the machine with the command line passed. */
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extern void prom_reboot(const char *boot_command);
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/* Evaluate the forth string passed. */
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extern void prom_feval(const char *forth_string);
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/* Enter the prom, with possibility of continuation with the 'go'
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* command in newer proms.
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*/
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extern void prom_cmdline(void);
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/* Enter the prom, with no chance of continuation for the stand-alone
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* which calls this.
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*/
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extern void prom_halt(void) __attribute__ ((noreturn));
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/* Halt and power-off the machine. */
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extern void prom_halt_power_off(void) __attribute__ ((noreturn));
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/* Set the PROM 'sync' callback function to the passed function pointer.
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* When the user gives the 'sync' command at the prom prompt while the
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* kernel is still active, the prom will call this routine.
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*
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*/
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typedef int (*callback_func_t)(long *cmd);
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extern void prom_setcallback(callback_func_t func_ptr);
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/* Acquire the IDPROM of the root node in the prom device tree. This
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* gets passed a buffer where you would like it stuffed. The return value
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* is the format type of this idprom or 0xff on error.
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*/
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extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
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/* Character operations to/from the console.... */
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/* Non-blocking get character from console. */
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extern int prom_nbgetchar(void);
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/* Non-blocking put character to console. */
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extern int prom_nbputchar(char character);
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/* Blocking get character from console. */
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extern char prom_getchar(void);
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/* Blocking put character to console. */
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extern void prom_putchar(char character);
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/* Prom's internal routines, don't use in kernel/boot code. */
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extern void prom_printf(const char *fmt, ...);
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extern void prom_write(const char *buf, unsigned int len);
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/* Multiprocessor operations... */
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#ifdef CONFIG_SMP
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/* Start the CPU with the given device tree node at the passed program
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* counter with the given arg passed in via register %o0.
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*/
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extern void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg);
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/* Start the CPU with the given cpu ID at the passed program
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* counter with the given arg passed in via register %o0.
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*/
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extern void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg);
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/* Stop the CPU with the given cpu ID. */
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extern void prom_stopcpu_cpuid(int cpuid);
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/* Stop the current CPU. */
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extern void prom_stopself(void);
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/* Idle the current CPU. */
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extern void prom_idleself(void);
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/* Resume the CPU with the passed device tree node. */
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extern void prom_resumecpu(int cpunode);
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#endif
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/* Power management interfaces. */
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/* Put the current CPU to sleep. */
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extern void prom_sleepself(void);
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/* Put the entire system to sleep. */
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extern int prom_sleepsystem(void);
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/* Initiate a wakeup event. */
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extern int prom_wakeupsystem(void);
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/* MMU and memory related OBP interfaces. */
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/* Get unique string identifying SIMM at given physical address. */
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extern int prom_getunumber(int syndrome_code,
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unsigned long phys_addr,
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char *buf, int buflen);
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/* Retain physical memory to the caller across soft resets. */
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extern unsigned long prom_retain(const char *name,
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unsigned long pa_low, unsigned long pa_high,
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long size, long align);
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/* Load explicit I/D TLB entries into the calling processor. */
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extern long prom_itlb_load(unsigned long index,
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unsigned long tte_data,
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unsigned long vaddr);
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extern long prom_dtlb_load(unsigned long index,
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unsigned long tte_data,
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unsigned long vaddr);
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/* Map/Unmap client program address ranges. First the format of
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* the mapping mode argument.
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*/
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#define PROM_MAP_WRITE 0x0001 /* Writable */
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#define PROM_MAP_READ 0x0002 /* Readable - sw */
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#define PROM_MAP_EXEC 0x0004 /* Executable - sw */
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#define PROM_MAP_LOCKED 0x0010 /* Locked, use i/dtlb load calls for this instead */
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#define PROM_MAP_CACHED 0x0020 /* Cacheable in both L1 and L2 caches */
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#define PROM_MAP_SE 0x0040 /* Side-Effects */
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#define PROM_MAP_GLOB 0x0080 /* Global */
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#define PROM_MAP_IE 0x0100 /* Invert-Endianness */
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#define PROM_MAP_DEFAULT (PROM_MAP_WRITE | PROM_MAP_READ | PROM_MAP_EXEC | PROM_MAP_CACHED)
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extern int prom_map(int mode, unsigned long size,
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unsigned long vaddr, unsigned long paddr);
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extern void prom_unmap(unsigned long size, unsigned long vaddr);
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/* PROM device tree traversal functions... */
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#ifdef PROMLIB_INTERNAL
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/* Internal version of prom_getchild. */
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extern int __prom_getchild(int parent_node);
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/* Internal version of prom_getsibling. */
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extern int __prom_getsibling(int node);
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#endif
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/* Get the child node of the given node, or zero if no child exists. */
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extern int prom_getchild(int parent_node);
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/* Get the next sibling node of the given node, or zero if no further
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* siblings exist.
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*/
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extern int prom_getsibling(int node);
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/* Get the length, at the passed node, of the given property type.
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* Returns -1 on error (ie. no such property at this node).
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*/
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extern int prom_getproplen(int thisnode, const char *property);
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/* Fetch the requested property using the given buffer. Returns
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* the number of bytes the prom put into your buffer or -1 on error.
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*/
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extern int prom_getproperty(int thisnode, const char *property,
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char *prop_buffer, int propbuf_size);
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/* Acquire an integer property. */
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extern int prom_getint(int node, const char *property);
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/* Acquire an integer property, with a default value. */
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extern int prom_getintdefault(int node, const char *property, int defval);
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/* Acquire a boolean property, 0=FALSE 1=TRUE. */
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extern int prom_getbool(int node, const char *prop);
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/* Acquire a string property, null string on error. */
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extern void prom_getstring(int node, const char *prop, char *buf, int bufsize);
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/* Does the passed node have the given "name"? YES=1 NO=0 */
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extern int prom_nodematch(int thisnode, const char *name);
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/* Search all siblings starting at the passed node for "name" matching
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* the given string. Returns the node on success, zero on failure.
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*/
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extern int prom_searchsiblings(int node_start, const char *name);
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/* Return the first property type, as a string, for the given node.
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* Returns a null string on error. Buffer should be at least 32B long.
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*/
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extern char *prom_firstprop(int node, char *buffer);
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/* Returns the next property after the passed property for the given
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* node. Returns null string on failure. Buffer should be at least 32B long.
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*/
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extern char *prom_nextprop(int node, const char *prev_property, char *buffer);
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/* Returns 1 if the specified node has given property. */
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extern int prom_node_has_property(int node, const char *property);
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/* Returns phandle of the path specified */
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extern int prom_finddevice(const char *name);
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/* Set the indicated property at the given node with the passed value.
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* Returns the number of bytes of your value that the prom took.
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*/
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extern int prom_setprop(int node, const char *prop_name, char *prop_value,
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int value_size);
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extern int prom_pathtoinode(const char *path);
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extern int prom_inst2pkg(int);
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extern int prom_service_exists(const char *service_name);
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extern void prom_sun4v_guest_soft_state(void);
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extern int prom_ihandle2path(int handle, char *buffer, int bufsize);
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/* Client interface level routines. */
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extern long p1275_cmd(const char *, long, ...);
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#if 0
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#define P1275_SIZE(x) ((((long)((x) / 32)) << 32) | (x))
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#else
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#define P1275_SIZE(x) x
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#endif
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/* We support at most 16 input and 1 output argument */
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#define P1275_ARG_NUMBER 0
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#define P1275_ARG_IN_STRING 1
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#define P1275_ARG_OUT_BUF 2
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#define P1275_ARG_OUT_32B 3
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#define P1275_ARG_IN_FUNCTION 4
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#define P1275_ARG_IN_BUF 5
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#define P1275_ARG_IN_64B 6
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#define P1275_IN(x) ((x) & 0xf)
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#define P1275_OUT(x) (((x) << 4) & 0xf0)
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#define P1275_INOUT(i,o) (P1275_IN(i)|P1275_OUT(o))
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#define P1275_ARG(n,x) ((x) << ((n)*3 + 8))
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#endif /* !(__SPARC64_OPLIB_H) */
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