/* 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)
*/
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(constchar *boot_command);
/* Evaluate the forth string passed. */ void prom_feval(constchar *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.
*/ unsignedchar prom_get_idprom(char *idp_buffer, int idpbuf_size);
/* Write a buffer of characters to the console. */ void prom_console_write_buf(constchar *buf, 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, unsignedlong pc, unsignedlong 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, unsignedlong pc, unsignedlong 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, unsignedlong phys_addr, char *buf, int buflen);
/* Retain physical memory to the caller across soft resets. */ int prom_retain(constchar *name, unsignedlong size, unsignedlong align, unsignedlong *paddr);
/* Load explicit I/D TLB entries into the calling processor. */ long prom_itlb_load(unsignedlong index, unsignedlong tte_data, unsignedlong vaddr);
long prom_dtlb_load(unsignedlong index, unsignedlong tte_data, unsignedlong 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)
/* 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, constchar *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, constchar *property, char *prop_buffer, int propbuf_size);
/* Acquire an integer property. */ int prom_getint(phandle node, constchar *property);
/* Acquire an integer property, with a default value. */ int prom_getintdefault(phandle node, constchar *property, int defval);
/* Acquire a boolean property, 0=FALSE 1=TRUE. */ int prom_getbool(phandle node, constchar *prop);
/* Acquire a string property, null string on error. */ void prom_getstring(phandle node, constchar *prop, char *buf, int bufsize);
/* Does the passed node have the given "name"? YES=1 NO=0 */ int prom_nodematch(phandle thisnode, constchar *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, constchar *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, constchar *prev_property, char *buf);
/* Returns 1 if the specified node has given property. */ int prom_node_has_property(phandle node, constchar *property);
/* Returns phandle of the path specified */
phandle prom_finddevice(constchar *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, constchar *prop_name, char *prop_value, int value_size);
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