arch/sparc/include/asm/oplib_64.h

   1 /* oplib.h:  Describes the interface and available routines in the
   2  *           Linux Prom library.
   3  *
   4  * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
   5  * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
   6  */
   7
   8 #ifndef __SPARC64_OPLIB_H
   9 #define __SPARC64_OPLIB_H
  10
  11 #include <asm/openprom.h>
  12
  13 /* OBP version string. */
  14 extern char prom_version[];
  15
  16 /* Root node of the prom device tree, this stays constant after
  17  * initialization is complete.
  18  */
  19 extern phandle prom_root_node;
  20
  21 /* PROM stdout */
  22 extern int prom_stdout;
  23
  24 /* /chosen node of the prom device tree, this stays constant after
  25  * initialization is complete.
  26  */
  27 extern phandle prom_chosen_node;
  28
  29 /* Helper values and strings in arch/sparc64/kernel/head.S */
  30 extern const char prom_peer_name[];
  31 extern const char prom_compatible_name[];
  32 extern const char prom_root_compatible[];
  33 extern const char prom_cpu_compatible[];
  34 extern const char prom_finddev_name[];
  35 extern const char prom_chosen_path[];
  36 extern const char prom_cpu_path[];
  37 extern const char prom_getprop_name[];
  38 extern const char prom_mmu_name[];
  39 extern const char prom_callmethod_name[];
  40 extern const char prom_translate_name[];
  41 extern const char prom_map_name[];
  42 extern const char prom_unmap_name[];
  43 extern int prom_mmu_ihandle_cache;
  44 extern unsigned int prom_boot_mapped_pc;
  45 extern unsigned int prom_boot_mapping_mode;
  46 extern unsigned long prom_boot_mapping_phys_high, prom_boot_mapping_phys_low;
  47
  48 struct linux_mlist_p1275 {
  49         struct linux_mlist_p1275 *theres_more;
  50         unsigned long start_adr;
  51         unsigned long num_bytes;
  52 };
  53
  54 struct linux_mem_p1275 {
  55         struct linux_mlist_p1275 **p1275_totphys;
  56         struct linux_mlist_p1275 **p1275_prommap;
  57         struct linux_mlist_p1275 **p1275_available; /* What we can use */
  58 };
  59
  60 /* The functions... */
  61
  62 /* You must call prom_init() before using any of the library services,
  63  * preferably as early as possible.  Pass it the romvec pointer.
  64  */
  65 extern void prom_init(void *cif_handler, void *cif_stack);
  66
  67 /* Boot argument acquisition, returns the boot command line string. */
  68 extern char *prom_getbootargs(void);
  69
  70 /* Miscellaneous routines, don't really fit in any category per se. */
  71
  72 /* Reboot the machine with the command line passed. */
  73 extern void prom_reboot(const char *boot_command);
  74
  75 /* Evaluate the forth string passed. */
  76 extern void prom_feval(const char *forth_string);
  77
  78 /* Enter the prom, with possibility of continuation with the 'go'
  79  * command in newer proms.
  80  */
  81 extern void prom_cmdline(void);
  82
  83 /* Enter the prom, with no chance of continuation for the stand-alone
  84  * which calls this.
  85  */
  86 extern void prom_halt(void) __attribute__ ((noreturn));
  87
  88 /* Halt and power-off the machine. */
  89 extern void prom_halt_power_off(void) __attribute__ ((noreturn));
  90
  91 /* Acquire the IDPROM of the root node in the prom device tree.  This
  92  * gets passed a buffer where you would like it stuffed.  The return value
  93  * is the format type of this idprom or 0xff on error.
  94  */
  95 extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
  96
  97 /* Write a buffer of characters to the console. */
  98 extern void prom_console_write_buf(const char *buf, int len);
  99
 100 /* Prom's internal routines, don't use in kernel/boot code. */
 101 extern __printf(1, 2) void prom_printf(const char *fmt, ...);
 102 extern void prom_write(const char *buf, unsigned int len);
 103
 104 /* Multiprocessor operations... */
 105 #ifdef CONFIG_SMP
 106 /* Start the CPU with the given device tree node at the passed program
 107  * counter with the given arg passed in via register %o0.
 108  */
 109 extern void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg);
 110
 111 /* Start the CPU with the given cpu ID at the passed program
 112  * counter with the given arg passed in via register %o0.
 113  */
 114 extern void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg);
 115
 116 /* Stop the CPU with the given cpu ID.  */
 117 extern void prom_stopcpu_cpuid(int cpuid);
 118
 119 /* Stop the current CPU. */
 120 extern void prom_stopself(void);
 121
 122 /* Idle the current CPU. */
 123 extern void prom_idleself(void);
 124
 125 /* Resume the CPU with the passed device tree node. */
 126 extern void prom_resumecpu(int cpunode);
 127 #endif
 128
 129 /* Power management interfaces. */
 130
 131 /* Put the current CPU to sleep. */
 132 extern void prom_sleepself(void);
 133
 134 /* Put the entire system to sleep. */
 135 extern int prom_sleepsystem(void);
 136
 137 /* Initiate a wakeup event. */
 138 extern int prom_wakeupsystem(void);
 139
 140 /* MMU and memory related OBP interfaces. */
 141
 142 /* Get unique string identifying SIMM at given physical address. */
 143 extern int prom_getunumber(int syndrome_code,
 144                            unsigned long phys_addr,
 145                            char *buf, int buflen);
 146
 147 /* Retain physical memory to the caller across soft resets. */
 148 extern int prom_retain(const char *name, unsigned long size,
 149                        unsigned long align, unsigned long *paddr);
 150
 151 /* Load explicit I/D TLB entries into the calling processor. */
 152 extern long prom_itlb_load(unsigned long index,
 153                            unsigned long tte_data,
 154                            unsigned long vaddr);
 155
 156 extern long prom_dtlb_load(unsigned long index,
 157                            unsigned long tte_data,
 158                            unsigned long vaddr);
 159
 160 /* Map/Unmap client program address ranges.  First the format of
 161  * the mapping mode argument.
 162  */
 163 #define PROM_MAP_WRITE  0x0001 /* Writable */
 164 #define PROM_MAP_READ   0x0002 /* Readable - sw */
 165 #define PROM_MAP_EXEC   0x0004 /* Executable - sw */
 166 #define PROM_MAP_LOCKED 0x0010 /* Locked, use i/dtlb load calls for this instead */
 167 #define PROM_MAP_CACHED 0x0020 /* Cacheable in both L1 and L2 caches */
 168 #define PROM_MAP_SE     0x0040 /* Side-Effects */
 169 #define PROM_MAP_GLOB   0x0080 /* Global */
 170 #define PROM_MAP_IE     0x0100 /* Invert-Endianness */
 171 #define PROM_MAP_DEFAULT (PROM_MAP_WRITE | PROM_MAP_READ | PROM_MAP_EXEC | PROM_MAP_CACHED)
 172
 173 extern int prom_map(int mode, unsigned long size,
 174                     unsigned long vaddr, unsigned long paddr);
 175 extern void prom_unmap(unsigned long size, unsigned long vaddr);
 176
 177
 178 /* PROM device tree traversal functions... */
 179
 180 /* Get the child node of the given node, or zero if no child exists. */
 181 extern phandle prom_getchild(phandle parent_node);
 182
 183 /* Get the next sibling node of the given node, or zero if no further
 184  * siblings exist.
 185  */
 186 extern phandle prom_getsibling(phandle node);
 187
 188 /* Get the length, at the passed node, of the given property type.
 189  * Returns -1 on error (ie. no such property at this node).
 190  */
 191 extern int prom_getproplen(phandle thisnode, const char *property);
 192
 193 /* Fetch the requested property using the given buffer.  Returns
 194  * the number of bytes the prom put into your buffer or -1 on error.
 195  */
 196 extern int prom_getproperty(phandle thisnode, const char *property,
 197                             char *prop_buffer, int propbuf_size);
 198
 199 /* Acquire an integer property. */
 200 extern int prom_getint(phandle node, const char *property);
 201
 202 /* Acquire an integer property, with a default value. */
 203 extern int prom_getintdefault(phandle node, const char *property, int defval);
 204
 205 /* Acquire a boolean property, 0=FALSE 1=TRUE. */
 206 extern int prom_getbool(phandle node, const char *prop);
 207
 208 /* Acquire a string property, null string on error. */
 209 extern void prom_getstring(phandle node, const char *prop, char *buf,
 210                            int bufsize);
 211
 212 /* Does the passed node have the given "name"? YES=1 NO=0 */
 213 extern int prom_nodematch(phandle thisnode, const char *name);
 214
 215 /* Search all siblings starting at the passed node for "name" matching
 216  * the given string.  Returns the node on success, zero on failure.
 217  */
 218 extern phandle prom_searchsiblings(phandle node_start, const char *name);
 219
 220 /* Return the first property type, as a string, for the given node.
 221  * Returns a null string on error. Buffer should be at least 32B long.
 222  */
 223 extern char *prom_firstprop(phandle node, char *buffer);
 224
 225 /* Returns the next property after the passed property for the given
 226  * node.  Returns null string on failure. Buffer should be at least 32B long.
 227  */
 228 extern char *prom_nextprop(phandle node, const char *prev_property, char *buf);
 229
 230 /* Returns 1 if the specified node has given property. */
 231 extern int prom_node_has_property(phandle node, const char *property);
 232
 233 /* Returns phandle of the path specified */
 234 extern phandle prom_finddevice(const char *name);
 235
 236 /* Set the indicated property at the given node with the passed value.
 237  * Returns the number of bytes of your value that the prom took.
 238  */
 239 extern int prom_setprop(phandle node, const char *prop_name, char *prop_value,
 240                         int value_size);
 241
 242 extern phandle prom_inst2pkg(int);
 243 extern void prom_sun4v_guest_soft_state(void);
 244
 245 extern int prom_ihandle2path(int handle, char *buffer, int bufsize);
 246
 247 /* Client interface level routines. */
 248 extern void p1275_cmd_direct(unsigned long *);
 249
 250 #endif /* !(__SPARC64_OPLIB_H) */