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linux-headers-6.8.0-83
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oplib_32.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * 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 */ }; 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 phandle prom_root_node; /* 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. */ void prom_init(struct linux_romvec *rom_ptr); /* 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(char *boot_command); /* Evaluate the forth string passed. */ void prom_feval(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 __noreturn prom_halt(void); /* 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); 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. */ unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size); /* Get the prom major version. */ int prom_version(void); /* Get the prom plugin revision. */ int prom_getrev(void); /* Get the prom firmware revision. */ int prom_getprev(void); /* 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... */ /* Start the CPU with the given device tree node, context table, and context * at the passed program counter. */ int prom_startcpu(int cpunode, struct linux_prom_registers *context_table, int context, char *program_counter); /* Initialize the memory lists based upon the prom version. */ void prom_meminit(void); /* 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 __must_check prom_getproperty(phandle thisnode, const char *property, char *prop_buffer, int propbuf_size); /* Acquire an integer property. */ int prom_getint(phandle node, char *property); /* Acquire an integer property, with a default value. */ int prom_getintdefault(phandle node, char *property, int defval); /* Acquire a boolean property, 0=FALSE 1=TRUE. */ int prom_getbool(phandle node, char *prop); /* Acquire a string property, null string on error. */ void prom_getstring(phandle node, char *prop, char *buf, int bufsize); /* 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, char *name); /* Returns the next property after the passed property for the given * node. Returns null string on failure. */ char *prom_nextprop(phandle node, char *prev_property, char *buffer); /* Returns phandle of the path specified */ phandle prom_finddevice(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); /* Dorking with Bus ranges... */ /* Apply promlib probes OBIO ranges to registers. */ 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. */ void prom_apply_generic_ranges(phandle node, phandle parent, struct linux_prom_registers *sbusregs, int nregs); void prom_ranges_init(void); /* CPU probing helpers. */ int cpu_find_by_instance(int instance, phandle *prom_node, int *mid); int cpu_find_by_mid(int mid, phandle *prom_node); int cpu_get_hwmid(phandle prom_node); extern spinlock_t prom_lock; #endif /* !(__SPARC_OPLIB_H) */
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