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 #include <linux/of.h> 15 16 /* V0 prom device operations. */ 17 struct linux_dev_v0_funcs { 18 int (*v0_devopen)(char *device_str); 19 int (*v0_devclose)(int dev_desc); 20 int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); 21 int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); 22 int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf); 23 int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf); 24 int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf); 25 int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf); 26 int (*v0_seekdev)(int dev_desc, long logical_offst, int from); 27 }; 28 29 /* V2 and later prom device operations. */ 30 struct linux_dev_v2_funcs { 31 phandle (*v2_inst2pkg)(int d); /* Convert ihandle to phandle */ 32 char * (*v2_dumb_mem_alloc)(char *va, unsigned sz); 33 void (*v2_dumb_mem_free)(char *va, unsigned sz); 34 35 /* To map devices into virtual I/O space. */ 36 char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz); 37 void (*v2_dumb_munmap)(char *virta, unsigned size); 38 39 int (*v2_dev_open)(char *devpath); 40 void (*v2_dev_close)(int d); 41 int (*v2_dev_read)(int d, char *buf, int nbytes); 42 int (*v2_dev_write)(int d, const char *buf, int nbytes); 43 int (*v2_dev_seek)(int d, int hi, int lo); 44 45 /* Never issued (multistage load support) */ 46 void (*v2_wheee2)(void); 47 void (*v2_wheee3)(void); 48 }; 49 50 struct linux_mlist_v0 { 51 struct linux_mlist_v0 *theres_more; 52 unsigned int start_adr; 53 unsigned num_bytes; 54 }; 55 56 struct linux_mem_v0 { 57 struct linux_mlist_v0 **v0_totphys; 58 struct linux_mlist_v0 **v0_prommap; 59 struct linux_mlist_v0 **v0_available; /* What we can use */ 60 }; 61 62 /* Arguments sent to the kernel from the boot prompt. */ 63 struct linux_arguments_v0 { 64 char *argv[8]; 65 char args[100]; 66 char boot_dev[2]; 67 int boot_dev_ctrl; 68 int boot_dev_unit; 69 int dev_partition; 70 char *kernel_file_name; 71 void *aieee1; /* XXX */ 72 }; 73 74 /* V2 and up boot things. */ 75 struct linux_bootargs_v2 { 76 char **bootpath; 77 char **bootargs; 78 int *fd_stdin; 79 int *fd_stdout; 80 }; 81 82 /* The top level PROM vector. */ 83 struct linux_romvec { 84 /* Version numbers. */ 85 unsigned int pv_magic_cookie; 86 unsigned int pv_romvers; 87 unsigned int pv_plugin_revision; 88 unsigned int pv_printrev; 89 90 /* Version 0 memory descriptors. */ 91 struct linux_mem_v0 pv_v0mem; 92 93 /* Node operations. */ 94 struct linux_nodeops *pv_nodeops; 95 96 char **pv_bootstr; 97 struct linux_dev_v0_funcs pv_v0devops; 98 99 char *pv_stdin; 100 char *pv_stdout; 101 #define PROMDEV_KBD 0 /* input from keyboard */ 102 #define PROMDEV_SCREEN 0 /* output to screen */ 103 #define PROMDEV_TTYA 1 /* in/out to ttya */ 104 #define PROMDEV_TTYB 2 /* in/out to ttyb */ 105 106 /* Blocking getchar/putchar. NOT REENTRANT! (grr) */ 107 int (*pv_getchar)(void); 108 void (*pv_putchar)(int ch); 109 110 /* Non-blocking variants. */ 111 int (*pv_nbgetchar)(void); 112 int (*pv_nbputchar)(int ch); 113 114 void (*pv_putstr)(char *str, int len); 115 116 /* Miscellany. */ 117 void (*pv_reboot)(char *bootstr); 118 void (*pv_printf)(__const__ char *fmt, ...); 119 void (*pv_abort)(void); 120 __volatile__ int *pv_ticks; 121 void (*pv_halt)(void); 122 void (**pv_synchook)(void); 123 124 /* Evaluate a forth string, not different proto for V0 and V2->up. */ 125 union { 126 void (*v0_eval)(int len, char *str); 127 void (*v2_eval)(char *str); 128 } pv_fortheval; 129 130 struct linux_arguments_v0 **pv_v0bootargs; 131 132 /* Get ether address. */ 133 unsigned int (*pv_enaddr)(int d, char *enaddr); 134 135 struct linux_bootargs_v2 pv_v2bootargs; 136 struct linux_dev_v2_funcs pv_v2devops; 137 138 int filler[15]; 139 140 /* This one is sun4c/sun4 only. */ 141 void (*pv_setctxt)(int ctxt, char *va, int pmeg); 142 143 /* Prom version 3 Multiprocessor routines. This stuff is crazy. 144 * No joke. Calling these when there is only one cpu probably 145 * crashes the machine, have to test this. :-) 146 */ 147 148 /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context 149 * 'thiscontext' executing at address 'prog_counter' 150 */ 151 int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr, 152 int thiscontext, char *prog_counter); 153 154 /* v3_cpustop() will cause cpu 'whichcpu' to stop executing 155 * until a resume cpu call is made. 156 */ 157 int (*v3_cpustop)(unsigned int whichcpu); 158 159 /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or 160 * resume cpu call is made. 161 */ 162 int (*v3_cpuidle)(unsigned int whichcpu); 163 164 /* v3_cpuresume() will resume processor 'whichcpu' executing 165 * starting with whatever 'pc' and 'npc' were left at the 166 * last 'idle' or 'stop' call. 167 */ 168 int (*v3_cpuresume)(unsigned int whichcpu); 169 }; 170 171 /* Routines for traversing the prom device tree. */ 172 struct linux_nodeops { 173 phandle (*no_nextnode)(phandle node); 174 phandle (*no_child)(phandle node); 175 int (*no_proplen)(phandle node, const char *name); 176 int (*no_getprop)(phandle node, const char *name, char *val); 177 int (*no_setprop)(phandle node, const char *name, char *val, int len); 178 char * (*no_nextprop)(phandle node, char *name); 179 }; 180 181 /* More fun PROM structures for device probing. */ 182 #if defined(__sparc__) && defined(__arch64__) 183 #define PROMREG_MAX 24 184 #define PROMVADDR_MAX 16 185 #define PROMINTR_MAX 32 186 #else 187 #define PROMREG_MAX 16 188 #define PROMVADDR_MAX 16 189 #define PROMINTR_MAX 15 190 #endif 191 192 struct linux_prom_registers { 193 unsigned int which_io; /* hi part of physical address */ 194 unsigned int phys_addr; /* The physical address of this register */ 195 unsigned int reg_size; /* How many bytes does this register take up? */ 196 }; 197 198 struct linux_prom64_registers { 199 unsigned long phys_addr; 200 unsigned long reg_size; 201 }; 202 203 struct linux_prom_irqs { 204 int pri; /* IRQ priority */ 205 int vector; /* This is foobar, what does it do? */ 206 }; 207 208 /* Element of the "ranges" vector */ 209 struct linux_prom_ranges { 210 unsigned int ot_child_space; 211 unsigned int ot_child_base; /* Bus feels this */ 212 unsigned int ot_parent_space; 213 unsigned int ot_parent_base; /* CPU looks from here */ 214 unsigned int or_size; 215 }; 216 217 /* 218 * Ranges and reg properties are a bit different for PCI. 219 */ 220 #if defined(__sparc__) && defined(__arch64__) 221 struct linux_prom_pci_registers { 222 unsigned int phys_hi; 223 unsigned int phys_mid; 224 unsigned int phys_lo; 225 226 unsigned int size_hi; 227 unsigned int size_lo; 228 }; 229 #else 230 struct linux_prom_pci_registers { 231 /* 232 * We don't know what information this field contain. 233 * We guess, PCI device function is in bits 15:8 234 * So, ... 235 */ 236 unsigned int which_io; /* Let it be which_io */ 237 238 unsigned int phys_hi; 239 unsigned int phys_lo; 240 241 unsigned int size_hi; 242 unsigned int size_lo; 243 }; 244 245 #endif 246 247 struct linux_prom_pci_ranges { 248 unsigned int child_phys_hi; /* Only certain bits are encoded here. */ 249 unsigned int child_phys_mid; 250 unsigned int child_phys_lo; 251 252 unsigned int parent_phys_hi; 253 unsigned int parent_phys_lo; 254 255 unsigned int size_hi; 256 unsigned int size_lo; 257 }; 258 259 struct linux_prom_pci_intmap { 260 unsigned int phys_hi; 261 unsigned int phys_mid; 262 unsigned int phys_lo; 263 264 unsigned int interrupt; 265 266 int cnode; 267 unsigned int cinterrupt; 268 }; 269 270 struct linux_prom_pci_intmask { 271 unsigned int phys_hi; 272 unsigned int phys_mid; 273 unsigned int phys_lo; 274 unsigned int interrupt; 275 }; 276 277 #endif /* !(__ASSEMBLY__) */ 278 279 #endif /* !(__SPARC_OPENPROM_H) */ 280