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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/sparc/include/asm/oplib_32.h | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/sparc/include/asm/oplib_32.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/oplib_32.h b/arch/sparc/include/asm/oplib_32.h new file mode 100644 index 0000000000..d1cf3a27a4 --- /dev/null +++ b/arch/sparc/include/asm/oplib_32.h @@ -0,0 +1,184 @@ +/* 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) */ |