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252 lines
8.1 KiB
252 lines
8.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* 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 ([email protected]) |
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* Copyright (C) 1996 Jakub Jelinek ([email protected]) |
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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 phandle prom_root_node; |
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/* PROM stdout */ |
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extern int 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 phandle 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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void prom_init(void *cif_handler); |
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void prom_init_report(void); |
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/* Boot argument acquisition, returns the boot command line string. */ |
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char *prom_getbootargs(void); |
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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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void prom_reboot(const char *boot_command); |
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/* Evaluate the forth string passed. */ |
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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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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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void prom_halt(void) __attribute__ ((noreturn)); |
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/* Halt and power-off the machine. */ |
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void prom_halt_power_off(void) __attribute__ ((noreturn)); |
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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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unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size); |
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/* Write a buffer of characters to the console. */ |
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void prom_console_write_buf(const char *buf, int len); |
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/* Prom's internal routines, don't use in kernel/boot code. */ |
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__printf(1, 2) void prom_printf(const char *fmt, ...); |
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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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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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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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void prom_stopcpu_cpuid(int cpuid); |
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/* Stop the current CPU. */ |
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void prom_stopself(void); |
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/* Idle the current CPU. */ |
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void prom_idleself(void); |
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/* Resume the CPU with the passed device tree node. */ |
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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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void prom_sleepself(void); |
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/* Put the entire system to sleep. */ |
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int prom_sleepsystem(void); |
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/* Initiate a wakeup event. */ |
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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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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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int prom_retain(const char *name, unsigned long size, |
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unsigned long align, unsigned long *paddr); |
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/* Load explicit I/D TLB entries into the calling processor. */ |
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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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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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int prom_map(int mode, unsigned long size, |
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unsigned long vaddr, unsigned long paddr); |
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void prom_unmap(unsigned long size, unsigned long vaddr); |
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/* PROM device tree traversal functions... */ |
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/* Get the child node of the given node, or zero if no child exists. */ |
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phandle prom_getchild(phandle 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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phandle prom_getsibling(phandle 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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int prom_getproplen(phandle 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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int prom_getproperty(phandle 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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int prom_getint(phandle node, const char *property); |
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/* Acquire an integer property, with a default value. */ |
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int prom_getintdefault(phandle node, const char *property, int defval); |
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/* Acquire a boolean property, 0=FALSE 1=TRUE. */ |
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int prom_getbool(phandle node, const char *prop); |
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/* Acquire a string property, null string on error. */ |
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void prom_getstring(phandle node, const char *prop, char *buf, |
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int bufsize); |
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/* Does the passed node have the given "name"? YES=1 NO=0 */ |
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int prom_nodematch(phandle 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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phandle prom_searchsiblings(phandle 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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char *prom_firstprop(phandle 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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char *prom_nextprop(phandle node, const char *prev_property, char *buf); |
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/* Returns 1 if the specified node has given property. */ |
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int prom_node_has_property(phandle node, const char *property); |
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/* Returns phandle of the path specified */ |
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phandle 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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int prom_setprop(phandle node, const char *prop_name, char *prop_value, |
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int value_size); |
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phandle prom_inst2pkg(int); |
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void prom_sun4v_guest_soft_state(void); |
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int prom_ihandle2path(int handle, char *buffer, int bufsize); |
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/* Client interface level routines. */ |
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void p1275_cmd_direct(unsigned long *); |
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#endif /* !(__SPARC64_OPLIB_H) */
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