1#ifndef __SPARC_OPENPROM_H 2#define __SPARC_OPENPROM_H 3 4/* openprom.h: Prom structures and defines for access to the OPENBOOT 5 * prom routines and data areas. 6 * 7 * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu) 8 */ 9 10/* Empirical constants... */ 11#define LINUX_OPPROM_MAGIC 0x10010407 12 13#ifndef __ASSEMBLY__ 14/* V0 prom device operations. */ 15struct linux_dev_v0_funcs { 16 int (*v0_devopen)(char *device_str); 17 int (*v0_devclose)(int dev_desc); 18 int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); 19 int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); 20 int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf); 21 int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf); 22 int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf); 23 int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf); 24 int (*v0_seekdev)(int dev_desc, long logical_offst, int from); 25}; 26 27/* V2 and later prom device operations. */ 28struct linux_dev_v2_funcs { 29 int (*v2_inst2pkg)(int d); /* Convert ihandle to phandle */ 30 char * (*v2_dumb_mem_alloc)(char *va, unsigned sz); 31 void (*v2_dumb_mem_free)(char *va, unsigned sz); 32 33 /* To map devices into virtual I/O space. */ 34 char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz); 35 void (*v2_dumb_munmap)(char *virta, unsigned size); 36 37 int (*v2_dev_open)(char *devpath); 38 void (*v2_dev_close)(int d); 39 int (*v2_dev_read)(int d, char *buf, int nbytes); 40 int (*v2_dev_write)(int d, const char *buf, int nbytes); 41 int (*v2_dev_seek)(int d, int hi, int lo); 42 43 /* Never issued (multistage load support) */ 44 void (*v2_wheee2)(void); 45 void (*v2_wheee3)(void); 46}; 47 48struct linux_mlist_v0 { 49 struct linux_mlist_v0 *theres_more; 50 unsigned int start_adr; 51 unsigned num_bytes; 52}; 53 54struct linux_mem_v0 { 55 struct linux_mlist_v0 **v0_totphys; 56 struct linux_mlist_v0 **v0_prommap; 57 struct linux_mlist_v0 **v0_available; /* What we can use */ 58}; 59 60/* Arguments sent to the kernel from the boot prompt. */ 61struct linux_arguments_v0 { 62 char *argv[8]; 63 char args[100]; 64 char boot_dev[2]; 65 int boot_dev_ctrl; 66 int boot_dev_unit; 67 int dev_partition; 68 char *kernel_file_name; 69 void *aieee1; 70}; 71 72/* V2 and up boot things. */ 73struct linux_bootargs_v2 { 74 char **bootpath; 75 char **bootargs; 76 int *fd_stdin; 77 int *fd_stdout; 78}; 79 80/* The top level PROM vector. */ 81struct linux_romvec { 82 /* Version numbers. */ 83 unsigned int pv_magic_cookie; 84 unsigned int pv_romvers; 85 unsigned int pv_plugin_revision; 86 unsigned int pv_printrev; 87 88 /* Version 0 memory descriptors. */ 89 struct linux_mem_v0 pv_v0mem; 90 91 /* Node operations. */ 92 struct linux_nodeops *pv_nodeops; 93 94 char **pv_bootstr; 95 struct linux_dev_v0_funcs pv_v0devops; 96 97 char *pv_stdin; 98 char *pv_stdout; 99#define PROMDEV_KBD 0 /* input from keyboard */ 100#define PROMDEV_SCREEN 0 /* output to screen */ 101#define PROMDEV_TTYA 1 /* in/out to ttya */ 102#define PROMDEV_TTYB 2 /* in/out to ttyb */ 103 104 /* Blocking getchar/putchar. NOT REENTRANT! (grr) */ 105 int (*pv_getchar)(void); 106 void (*pv_putchar)(int ch); 107 108 /* Non-blocking variants. */ 109 int (*pv_nbgetchar)(void); 110 int (*pv_nbputchar)(int ch); 111 112 void (*pv_putstr)(char *str, int len); 113 114 /* Miscellany. */ 115 void (*pv_reboot)(char *bootstr); 116 void (*pv_printf)(__const__ char *fmt, ...); 117 void (*pv_abort)(void); 118 __volatile__ int *pv_ticks; 119 void (*pv_halt)(void); 120 void (**pv_synchook)(void); 121 122 /* Evaluate a forth string, not different proto for V0 and V2->up. */ 123 union { 124 void (*v0_eval)(int len, char *str); 125 void (*v2_eval)(char *str); 126 } pv_fortheval; 127 128 struct linux_arguments_v0 **pv_v0bootargs; 129 130 /* Get ether address. */ 131 unsigned int (*pv_enaddr)(int d, char *enaddr); 132 133 struct linux_bootargs_v2 pv_v2bootargs; 134 struct linux_dev_v2_funcs pv_v2devops; 135 136 int filler[15]; 137 138 /* This one is sun4c/sun4 only. */ 139 void (*pv_setctxt)(int ctxt, char *va, int pmeg); 140 141 /* Prom version 3 Multiprocessor routines. This stuff is crazy. 142 * No joke. Calling these when there is only one cpu probably 143 * crashes the machine, have to test this. :-) 144 */ 145 146 /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context 147 * 'thiscontext' executing at address 'prog_counter' 148 */ 149 int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr, 150 int thiscontext, char *prog_counter); 151 152 /* v3_cpustop() will cause cpu 'whichcpu' to stop executing 153 * until a resume cpu call is made. 154 */ 155 int (*v3_cpustop)(unsigned int whichcpu); 156 157 /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or 158 * resume cpu call is made. 159 */ 160 int (*v3_cpuidle)(unsigned int whichcpu); 161 162 /* v3_cpuresume() will resume processor 'whichcpu' executing 163 * starting with whatever 'pc' and 'npc' were left at the 164 * last 'idle' or 'stop' call. 165 */ 166 int (*v3_cpuresume)(unsigned int whichcpu); 167}; 168 169/* Routines for traversing the prom device tree. */ 170struct linux_nodeops { 171 int (*no_nextnode)(int node); 172 int (*no_child)(int node); 173 int (*no_proplen)(int node, const char *name); 174 int (*no_getprop)(int node, const char *name, char *val); 175 int (*no_setprop)(int node, const char *name, char *val, int len); 176 char * (*no_nextprop)(int node, char *name); 177}; 178 179/* More fun PROM structures for device probing. */ 180#if defined(__sparc__) && defined(__arch64__) 181#define PROMREG_MAX 24 182#define PROMVADDR_MAX 16 183#define PROMINTR_MAX 32 184#else 185#define PROMREG_MAX 16 186#define PROMVADDR_MAX 16 187#define PROMINTR_MAX 15 188#endif 189 190struct linux_prom_registers { 191 unsigned int which_io; /* hi part of physical address */ 192 unsigned int phys_addr; /* The physical address of this register */ 193 unsigned int reg_size; /* How many bytes does this register take up? */ 194}; 195 196struct linux_prom64_registers { 197 unsigned long phys_addr; 198 unsigned long reg_size; 199}; 200 201struct linux_prom_irqs { 202 int pri; /* IRQ priority */ 203 int vector; /* This is foobar, what does it do? */ 204}; 205 206/* Element of the "ranges" vector */ 207struct linux_prom_ranges { 208 unsigned int ot_child_space; 209 unsigned int ot_child_base; /* Bus feels this */ 210 unsigned int ot_parent_space; 211 unsigned int ot_parent_base; /* CPU looks from here */ 212 unsigned int or_size; 213}; 214 215/* 216 * Ranges and reg properties are a bit different for PCI. 217 */ 218#if defined(__sparc__) && defined(__arch64__) 219struct linux_prom_pci_registers { 220 unsigned int phys_hi; 221 unsigned int phys_mid; 222 unsigned int phys_lo; 223 224 unsigned int size_hi; 225 unsigned int size_lo; 226}; 227#else 228struct linux_prom_pci_registers { 229 /* 230 * We don't know what information this field contain. 231 * We guess, PCI device function is in bits 15:8 232 * So, ... 233 */ 234 unsigned int which_io; /* Let it be which_io */ 235 236 unsigned int phys_hi; 237 unsigned int phys_lo; 238 239 unsigned int size_hi; 240 unsigned int size_lo; 241}; 242 243#endif 244 245struct linux_prom_pci_ranges { 246 unsigned int child_phys_hi; /* Only certain bits are encoded here. */ 247 unsigned int child_phys_mid; 248 unsigned int child_phys_lo; 249 250 unsigned int parent_phys_hi; 251 unsigned int parent_phys_lo; 252 253 unsigned int size_hi; 254 unsigned int size_lo; 255}; 256 257struct linux_prom_pci_intmap { 258 unsigned int phys_hi; 259 unsigned int phys_mid; 260 unsigned int phys_lo; 261 262 unsigned int interrupt; 263 264 int cnode; 265 unsigned int cinterrupt; 266}; 267 268struct linux_prom_pci_intmask { 269 unsigned int phys_hi; 270 unsigned int phys_mid; 271 unsigned int phys_lo; 272 unsigned int interrupt; 273}; 274 275#endif /* !(__ASSEMBLY__) */ 276 277#endif /* !(__SPARC_OPENPROM_H) */ 278