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Diffstat (limited to 'arch/sparc/include/asm/oplib_64.h')
| -rw-r--r-- | arch/sparc/include/asm/oplib_64.h | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h new file mode 100644 index 000000000..a67abebd4 --- /dev/null +++ b/arch/sparc/include/asm/oplib_64.h @@ -0,0 +1,252 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* oplib.h: Describes the interface and available routines in the + * Linux Prom library. + * + * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net) + * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + */ + +#ifndef __SPARC64_OPLIB_H +#define __SPARC64_OPLIB_H + +#include <asm/openprom.h> + +/* OBP version string. */ +extern char prom_version[]; + +/* Root node of the prom device tree, this stays constant after + * initialization is complete. + */ +extern phandle prom_root_node; + +/* PROM stdout */ +extern int prom_stdout; + +/* /chosen node of the prom device tree, this stays constant after + * initialization is complete. + */ +extern phandle prom_chosen_node; + +/* Helper values and strings in arch/sparc64/kernel/head.S */ +extern const char prom_peer_name[]; +extern const char prom_compatible_name[]; +extern const char prom_root_compatible[]; +extern const char prom_cpu_compatible[]; +extern const char prom_finddev_name[]; +extern const char prom_chosen_path[]; +extern const char prom_cpu_path[]; +extern const char prom_getprop_name[]; +extern const char prom_mmu_name[]; +extern const char prom_callmethod_name[]; +extern const char prom_translate_name[]; +extern const char prom_map_name[]; +extern const char prom_unmap_name[]; +extern int prom_mmu_ihandle_cache; +extern unsigned int prom_boot_mapped_pc; +extern unsigned int prom_boot_mapping_mode; +extern unsigned long prom_boot_mapping_phys_high, prom_boot_mapping_phys_low; + +struct linux_mlist_p1275 { + struct linux_mlist_p1275 *theres_more; + unsigned long start_adr; + unsigned long num_bytes; +}; + +struct linux_mem_p1275 { + struct linux_mlist_p1275 **p1275_totphys; + struct linux_mlist_p1275 **p1275_prommap; + struct linux_mlist_p1275 **p1275_available; /* What we can use */ +}; + +/* 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(void *cif_handler); +void prom_init_report(void); + +/* 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(const char *boot_command); + +/* Evaluate the forth string passed. */ +void prom_feval(const 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 prom_halt(void) __attribute__ ((noreturn)); + +/* Halt and power-off the machine. */ +void prom_halt_power_off(void) __attribute__ ((noreturn)); + +/* 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); + +/* 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... */ +#ifdef CONFIG_SMP +/* Start the CPU with the given device tree node at the passed program + * counter with the given arg passed in via register %o0. + */ +void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg); + +/* Start the CPU with the given cpu ID at the passed program + * counter with the given arg passed in via register %o0. + */ +void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg); + +/* Stop the CPU with the given cpu ID. */ +void prom_stopcpu_cpuid(int cpuid); + +/* Stop the current CPU. */ +void prom_stopself(void); + +/* Idle the current CPU. */ +void prom_idleself(void); + +/* Resume the CPU with the passed device tree node. */ +void prom_resumecpu(int cpunode); +#endif + +/* Power management interfaces. */ + +/* Put the current CPU to sleep. */ +void prom_sleepself(void); + +/* Put the entire system to sleep. */ +int prom_sleepsystem(void); + +/* Initiate a wakeup event. */ +int prom_wakeupsystem(void); + +/* MMU and memory related OBP interfaces. */ + +/* Get unique string identifying SIMM at given physical address. */ +int prom_getunumber(int syndrome_code, + unsigned long phys_addr, + char *buf, int buflen); + +/* Retain physical memory to the caller across soft resets. */ +int prom_retain(const char *name, unsigned long size, + unsigned long align, unsigned long *paddr); + +/* Load explicit I/D TLB entries into the calling processor. */ +long prom_itlb_load(unsigned long index, + unsigned long tte_data, + unsigned long vaddr); + +long prom_dtlb_load(unsigned long index, + unsigned long tte_data, + unsigned long vaddr); + +/* Map/Unmap client program address ranges. First the format of + * the mapping mode argument. + */ +#define PROM_MAP_WRITE 0x0001 /* Writable */ +#define PROM_MAP_READ 0x0002 /* Readable - sw */ +#define PROM_MAP_EXEC 0x0004 /* Executable - sw */ +#define PROM_MAP_LOCKED 0x0010 /* Locked, use i/dtlb load calls for this instead */ +#define PROM_MAP_CACHED 0x0020 /* Cacheable in both L1 and L2 caches */ +#define PROM_MAP_SE 0x0040 /* Side-Effects */ +#define PROM_MAP_GLOB 0x0080 /* Global */ +#define PROM_MAP_IE 0x0100 /* Invert-Endianness */ +#define PROM_MAP_DEFAULT (PROM_MAP_WRITE | PROM_MAP_READ | PROM_MAP_EXEC | PROM_MAP_CACHED) + +int prom_map(int mode, unsigned long size, + unsigned long vaddr, unsigned long paddr); +void prom_unmap(unsigned long size, unsigned long vaddr); + + +/* 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 prom_getproperty(phandle thisnode, const char *property, + char *prop_buffer, int propbuf_size); + +/* Acquire an integer property. */ +int prom_getint(phandle node, const char *property); + +/* Acquire an integer property, with a default value. */ +int prom_getintdefault(phandle node, const char *property, int defval); + +/* Acquire a boolean property, 0=FALSE 1=TRUE. */ +int prom_getbool(phandle node, const char *prop); + +/* Acquire a string property, null string on error. */ +void prom_getstring(phandle node, const char *prop, char *buf, + int bufsize); + +/* Does the passed node have the given "name"? YES=1 NO=0 */ +int prom_nodematch(phandle thisnode, const char *name); + +/* 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, const char *name); + +/* Return the first property type, as a string, for the given node. + * Returns a null string on error. Buffer should be at least 32B long. + */ +char *prom_firstprop(phandle node, char *buffer); + +/* Returns the next property after the passed property for the given + * node. Returns null string on failure. Buffer should be at least 32B long. + */ +char *prom_nextprop(phandle node, const char *prev_property, char *buf); + +/* Returns 1 if the specified node has given property. */ +int prom_node_has_property(phandle node, const char *property); + +/* Returns phandle of the path specified */ +phandle prom_finddevice(const 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); +void prom_sun4v_guest_soft_state(void); + +int prom_ihandle2path(int handle, char *buffer, int bufsize); + +/* Client interface level routines. */ +void p1275_cmd_direct(unsigned long *); + +#endif /* !(__SPARC64_OPLIB_H) */ |