1 /* $Id: openprom.h,v 1.24 2000/06/04 06:23:53 anton 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 #include <asm/vaddrs.h> 12 13 /* Empirical constants... */ 14 #define LINUX_OPPROM_MAGIC 0x10010407 15 16 #ifndef __ASSEMBLY__ 17 /* V0 prom device operations. */ 18 struct linux_dev_v0_funcs { 19 int (*v0_devopen)(char *device_str); 20 int (*v0_devclose)(int dev_desc); 21 int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); 22 int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); 23 int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf); 24 int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf); 25 int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf); 26 int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf); 27 int (*v0_seekdev)(int dev_desc, long logical_offst, int from); 28 }; 29 30 /* V2 and later prom device operations. */ 31 struct linux_dev_v2_funcs { 32 int (*v2_inst2pkg)(int d); /* Convert ihandle to phandle */ 33 char * (*v2_dumb_mem_alloc)(char *va, unsigned sz); 34 void (*v2_dumb_mem_free)(char *va, unsigned sz); 35 36 /* To map devices into virtual I/O space. */ 37 char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz); 38 void (*v2_dumb_munmap)(char *virta, unsigned size); 39 40 int (*v2_dev_open)(char *devpath); 41 void (*v2_dev_close)(int d); 42 int (*v2_dev_read)(int d, char *buf, int nbytes); 43 int (*v2_dev_write)(int d, char *buf, int nbytes); 44 int (*v2_dev_seek)(int d, int hi, int lo); 45 46 /* Never issued (multistage load support) */ 47 void (*v2_wheee2)(void); 48 void (*v2_wheee3)(void); 49 }; 50 51 struct linux_mlist_v0 { 52 struct linux_mlist_v0 *theres_more; 53 char *start_adr; 54 unsigned num_bytes; 55 }; 56 57 struct linux_mem_v0 { 58 struct linux_mlist_v0 **v0_totphys; 59 struct linux_mlist_v0 **v0_prommap; 60 struct linux_mlist_v0 **v0_available; /* What we can use */ 61 }; 62 63 /* Arguments sent to the kernel from the boot prompt. */ 64 struct linux_arguments_v0 { 65 char *argv[8]; 66 char args[100]; 67 char boot_dev[2]; 68 int boot_dev_ctrl; 69 int boot_dev_unit; 70 int dev_partition; 71 char *kernel_file_name; 72 void *aieee1; /* XXX */ 73 }; 74 75 /* V2 and up boot things. */ 76 struct linux_bootargs_v2 { 77 char **bootpath; 78 char **bootargs; 79 int *fd_stdin; 80 int *fd_stdout; 81 }; 82 83 /* The top level PROM vector. */ 84 struct linux_romvec { 85 /* Version numbers. */ 86 unsigned int pv_magic_cookie; 87 unsigned int pv_romvers; 88 unsigned int pv_plugin_revision; 89 unsigned int pv_printrev; 90 91 /* Version 0 memory descriptors. */ 92 struct linux_mem_v0 pv_v0mem; 93 94 /* Node operations. */ 95 struct linux_nodeops *pv_nodeops; 96 97 char **pv_bootstr; 98 struct linux_dev_v0_funcs pv_v0devops; 99 100 char *pv_stdin; 101 char *pv_stdout; 102 #define PROMDEV_KBD 0 /* input from keyboard */ 103 #define PROMDEV_SCREEN 0 /* output to screen */ 104 #define PROMDEV_TTYA 1 /* in/out to ttya */ 105 #define PROMDEV_TTYB 2 /* in/out to ttyb */ 106 107 /* Blocking getchar/putchar. NOT REENTRANT! (grr) */ 108 int (*pv_getchar)(void); 109 void (*pv_putchar)(int ch); 110 111 /* Non-blocking variants. */ 112 int (*pv_nbgetchar)(void); 113 int (*pv_nbputchar)(int ch); 114 115 void (*pv_putstr)(char *str, int len); 116 117 /* Miscellany. */ 118 void (*pv_reboot)(char *bootstr); 119 void (*pv_printf)(__const__ char *fmt, ...); 120 void (*pv_abort)(void); 121 __volatile__ int *pv_ticks; 122 void (*pv_halt)(void); 123 void (**pv_synchook)(void); 124 125 /* Evaluate a forth string, not different proto for V0 and V2->up. */ 126 union { 127 void (*v0_eval)(int len, char *str); 128 void (*v2_eval)(char *str); 129 } pv_fortheval; 130 131 struct linux_arguments_v0 **pv_v0bootargs; 132 133 /* Get ether address. */ 134 unsigned int (*pv_enaddr)(int d, char *enaddr); 135 136 struct linux_bootargs_v2 pv_v2bootargs; 137 struct linux_dev_v2_funcs pv_v2devops; 138 139 int filler[15]; 140 141 /* This one is sun4c/sun4 only. */ 142 void (*pv_setctxt)(int ctxt, char *va, int pmeg); 143 144 /* Prom version 3 Multiprocessor routines. This stuff is crazy. 145 * No joke. Calling these when there is only one cpu probably 146 * crashes the machine, have to test this. :-) 147 */ 148 149 /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context 150 * 'thiscontext' executing at address 'prog_counter' 151 */ 152 int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr, 153 int thiscontext, char *prog_counter); 154 155 /* v3_cpustop() will cause cpu 'whichcpu' to stop executing 156 * until a resume cpu call is made. 157 */ 158 int (*v3_cpustop)(unsigned int whichcpu); 159 160 /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or 161 * resume cpu call is made. 162 */ 163 int (*v3_cpuidle)(unsigned int whichcpu); 164 165 /* v3_cpuresume() will resume processor 'whichcpu' executing 166 * starting with whatever 'pc' and 'npc' were left at the 167 * last 'idle' or 'stop' call. 168 */ 169 int (*v3_cpuresume)(unsigned int whichcpu); 170 }; 171 172 extern struct linux_romvec *romvec; 173 174 /* Routines for traversing the prom device tree. */ 175 struct linux_nodeops { 176 int (*no_nextnode)(int node); 177 int (*no_child)(int node); 178 int (*no_proplen)(int node, char *name); 179 int (*no_getprop)(int node, char *name, char *val); 180 int (*no_setprop)(int node, char *name, char *val, int len); 181 char * (*no_nextprop)(int node, char *name); 182 }; 183 184 /* More fun PROM structures for device probing. */ 185 #define PROMREG_MAX 16 186 #define PROMVADDR_MAX 16 187 #define PROMINTR_MAX 15 188 189 struct linux_prom_registers { 190 unsigned int which_io; /* is this in OBIO space? */ 191 unsigned int phys_addr; /* The physical address of this register */ 192 unsigned int reg_size; /* How many bytes does this register take up? */ 193 }; 194 195 struct linux_prom_irqs { 196 int pri; /* IRQ priority */ 197 int vector; /* This is foobar, what does it do? */ 198 }; 199 200 /* Element of the "ranges" vector */ 201 struct linux_prom_ranges { 202 unsigned int ot_child_space; 203 unsigned int ot_child_base; /* Bus feels this */ 204 unsigned int ot_parent_space; 205 unsigned int ot_parent_base; /* CPU looks from here */ 206 unsigned int or_size; 207 }; 208 209 /* Ranges and reg properties are a bit different for PCI. */ 210 struct linux_prom_pci_registers { 211 /* 212 * We don't know what information this field contain. 213 * We guess, PCI device function is in bits 15:8 214 * So, ... 215 */ 216 unsigned int which_io; /* Let it be which_io */ 217 218 unsigned int phys_hi; 219 unsigned int phys_lo; 220 221 unsigned int size_hi; 222 unsigned int size_lo; 223 }; 224 225 struct linux_prom_pci_ranges { 226 unsigned int child_phys_hi; /* Only certain bits are encoded here. */ 227 unsigned int child_phys_mid; 228 unsigned int child_phys_lo; 229 230 unsigned int parent_phys_hi; 231 unsigned int parent_phys_lo; 232 233 unsigned int size_hi; 234 unsigned int size_lo; 235 }; 236 237 struct linux_prom_pci_assigned_addresses { 238 unsigned int which_io; 239 240 unsigned int phys_hi; 241 unsigned int phys_lo; 242 243 unsigned int size_hi; 244 unsigned int size_lo; 245 }; 246 247 struct linux_prom_ebus_ranges { 248 unsigned int child_phys_hi; 249 unsigned int child_phys_lo; 250 251 unsigned int parent_phys_hi; 252 unsigned int parent_phys_mid; 253 unsigned int parent_phys_lo; 254 255 unsigned int size; 256 }; 257 258 #endif /* !(__ASSEMBLY__) */ 259 260 #endif /* !(__SPARC_OPENPROM_H) */ 261