include/asm-sparc/openprom.h

Name: Public Git Hosting - davej-history.git/blob - include/asm-sparc/openprom.h
Rating: 4.8 (6836 reviews)
 1 /* $Id: openprom.h,v 1.20 1997/04/10 06:41:06 davem Exp $ */
 2 #ifndef __SPARC_OPENPROM_H
 3 #define __SPARC_OPENPROM_H
 4
 5 /* openprom.h: Prom structures and defines for access to the OPENBOOT
 6  * prom routines and data areas.
 7  *
 8  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
 9  */
 10
 11 /* Empirical constants... */
 12 #define KADB_DEBUGGER_BEGVM 0xffc00000/* Where kern debugger is in virt-mem */
 13 #define LINUX_OPPROM_BEGVM 0xffd00000
 14 #define LINUX_OPPROM_ENDVM 0xfff00000
 15 #define LINUX_OPPROM_MAGIC 0x10010407
 16
 17 #ifndef __ASSEMBLY__
 18 /* V0 prom device operations. */
 19 struct linux_dev_v0_funcs {
 20 int(*v0_devopen)(char*device_str);
 21 int(*v0_devclose)(int dev_desc);
 22 int(*v0_rdblkdev)(int dev_desc,int num_blks,int blk_st,char*buf);
 23 int(*v0_wrblkdev)(int dev_desc,int num_blks,int blk_st,char*buf);
 24 int(*v0_wrnetdev)(int dev_desc,int num_bytes,char*buf);
 25 int(*v0_rdnetdev)(int dev_desc,int num_bytes,char*buf);
 26 int(*v0_rdchardev)(int dev_desc,int num_bytes,int dummy,char*buf);
 27 int(*v0_wrchardev)(int dev_desc,int num_bytes,int dummy,char*buf);
 28 int(*v0_seekdev)(int dev_desc,long logical_offst,int from);
 29 };
 30
 31 /* V2 and later prom device operations. */
 32 struct linux_dev_v2_funcs {
 33 int(*v2_inst2pkg)(int d);/* Convert ihandle to phandle */
 34 char* (*v2_dumb_mem_alloc)(char*va,unsigned sz);
 35 void(*v2_dumb_mem_free)(char*va,unsigned sz);
 36
 37 /* To map devices into virtual I/O space. */
 38 char* (*v2_dumb_mmap)(char*virta,int which_io,unsigned paddr,unsigned sz);
 39 void(*v2_dumb_munmap)(char*virta,unsigned size);
 40
 41 int(*v2_dev_open)(char*devpath);
 42 void(*v2_dev_close)(int d);
 43 int(*v2_dev_read)(int d,char*buf,int nbytes);
 44 int(*v2_dev_write)(int d,char*buf,int nbytes);
 45 int(*v2_dev_seek)(int d,int hi,int lo);
 46
 47 /* Never issued (multistage load support) */
 48 void(*v2_wheee2)(void);
 49 void(*v2_wheee3)(void);
 50 };
 51
 52 struct linux_mlist_v0 {
 53 struct linux_mlist_v0 *theres_more;
 54 char*start_adr;
 55 unsigned num_bytes;
 56 };
 57
 58 struct linux_mem_v0 {
 59 struct linux_mlist_v0 **v0_totphys;
 60 struct linux_mlist_v0 **v0_prommap;
 61 struct linux_mlist_v0 **v0_available;/* What we can use */
 62 };
 63
 64 /* Arguments sent to the kernel from the boot prompt. */
 65 struct linux_arguments_v0 {
 66 char*argv[8];
 67 char args[100];
 68 char boot_dev[2];
 69 int boot_dev_ctrl;
 70 int boot_dev_unit;
 71 int dev_partition;
 72 char*kernel_file_name;
 73 void*aieee1;/* XXX */
 74 };
 75
 76 /* V2 and up boot things. */
 77 struct linux_bootargs_v2 {
 78 char**bootpath;
 79 char**bootargs;
 80 int*fd_stdin;
 81 int*fd_stdout;
 82 };
 83
 84 /* The top level PROM vector. */
 85 struct linux_romvec {
 86 /* Version numbers. */
 87 unsigned int pv_magic_cookie;
 88 unsigned int pv_romvers;
 89 unsigned int pv_plugin_revision;
 90 unsigned int pv_printrev;
 91
 92 /* Version 0 memory descriptors. */
 93 struct linux_mem_v0 pv_v0mem;
 94
 95 /* Node operations. */
 96 struct linux_nodeops *pv_nodeops;
 97
 98 char**pv_bootstr;
 99 struct linux_dev_v0_funcs pv_v0devops;
 100
 101 char*pv_stdin;
 102 char*pv_stdout;
 103 #define PROMDEV_KBD 0/* input from keyboard */
 104 #define PROMDEV_SCREEN 0/* output to screen */
 105 #define PROMDEV_TTYA 1/* in/out to ttya */
 106 #define PROMDEV_TTYB 2/* in/out to ttyb */
 107
 108 /* Blocking getchar/putchar. NOT REENTRANT! (grr) */
 109 int(*pv_getchar)(void);
 110 void(*pv_putchar)(int ch);
 111
 112 /* Non-blocking variants. */
 113 int(*pv_nbgetchar)(void);
 114 int(*pv_nbputchar)(int ch);
 115
 116 void(*pv_putstr)(char*str,int len);
 117
 118 /* Miscellany. */
 119 void(*pv_reboot)(char*bootstr);
 120 void(*pv_printf)(__const__ char*fmt, ...);
 121 void(*pv_abort)(void);
 122  __volatile__ int*pv_ticks;
 123 void(*pv_halt)(void);
 124 void(**pv_synchook)(void);
 125
 126 /* Evaluate a forth string, not different proto for V0 and V2->up. */
 127 union{
 128 void(*v0_eval)(int len,char*str);
 129 void(*v2_eval)(char*str);
 130 } pv_fortheval;
 131
 132 struct linux_arguments_v0 **pv_v0bootargs;
 133
 134 /* Get ether address. */
 135 unsigned int(*pv_enaddr)(int d,char*enaddr);
 136
 137 struct linux_bootargs_v2 pv_v2bootargs;
 138 struct linux_dev_v2_funcs pv_v2devops;
 139
 140 int filler[15];
 141
 142 /* This one is sun4c/sun4 only. */
 143 void(*pv_setctxt)(int ctxt,char*va,int pmeg);
 144
 145 /* Prom version 3 Multiprocessor routines. This stuff is crazy.
 146  * No joke. Calling these when there is only one cpu probably
 147  * crashes the machine, have to test this. :-)
 148  */
 149
 150 /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context
 151  * 'thiscontext' executing at address 'prog_counter'
 152  */
 153 int(*v3_cpustart)(unsigned int whichcpu,int ctxtbl_ptr,
 154 int thiscontext,char*prog_counter);
 155
 156 /* v3_cpustop() will cause cpu 'whichcpu' to stop executing
 157  * until a resume cpu call is made.
 158  */
 159 int(*v3_cpustop)(unsigned int whichcpu);
 160
 161 /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or
 162  * resume cpu call is made.
 163  */
 164 int(*v3_cpuidle)(unsigned int whichcpu);
 165
 166 /* v3_cpuresume() will resume processor 'whichcpu' executing
 167  * starting with whatever 'pc' and 'npc' were left at the
 168  * last 'idle' or 'stop' call.
 169  */
 170 int(*v3_cpuresume)(unsigned int whichcpu);
 171 };
 172
 173 /* Routines for traversing the prom device tree. */
 174 struct linux_nodeops {
 175 int(*no_nextnode)(int node);
 176 int(*no_child)(int node);
 177 int(*no_proplen)(int node,char*name);
 178 int(*no_getprop)(int node,char*name,char*val);
 179 int(*no_setprop)(int node,char*name,char*val,int len);
 180 char* (*no_nextprop)(int node,char*name);
 181 };
 182
 183 /* More fun PROM structures for device probing. */
 184 #define PROMREG_MAX 16
 185 #define PROMVADDR_MAX 16
 186 #define PROMINTR_MAX 15
 187
 188 struct linux_prom_registers {
 189 unsigned int which_io;/* is this in OBIO space? */
 190 unsigned int phys_addr;/* The physical address of this register */
 191 unsigned int reg_size;/* How many bytes does this register take up? */
 192 };
 193
 194 struct linux_prom_irqs {
 195 int pri;/* IRQ priority */
 196 int vector;/* This is foobar, what does it do? */
 197 };
 198
 199 /* Element of the "ranges" vector */
 200 struct linux_prom_ranges {
 201 unsigned int ot_child_space;
 202 unsigned int ot_child_base;/* Bus feels this */
 203 unsigned int ot_parent_space;
 204 unsigned int ot_parent_base;/* CPU looks from here */
 205 unsigned int or_size;
 206 };
 207
 208 #endif/* !(__ASSEMBLY__) */
 209
 210 #endif/* !(__SPARC_OPENPROM_H) */