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1.1 root 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 David S. Miller ([email protected])
8: */
9:
10: // #include <asm/vaddrs.h>
11:
12: /* Empirical constants... */
13: #define LINUX_OPPROM_MAGIC 0x10010407
14:
15: #ifndef __ASSEMBLY__
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: int (*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, 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: char *start_adr;
53: unsigned num_bytes;
54: };
55:
56: struct linux_mem_v0 {
57: struct linux_mlist_v0 * const *v0_totphys;
58: struct linux_mlist_v0 * const *v0_prommap;
59: struct linux_mlist_v0 * const *v0_available; /* What we can use */
60: };
61:
62: /* Arguments sent to the kernel from the boot prompt. */
63: struct linux_arguments_v0 {
64: const 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: const char *kernel_file_name;
71: void *aieee1; /* XXX */
72: };
73:
74: /* V2 and up boot things. */
75: struct linux_bootargs_v2 {
76: const char **bootpath;
77: const char **bootargs;
78: const int *fd_stdin;
79: const 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: const struct linux_nodeops *pv_nodeops;
95:
96: char **pv_bootstr;
97: struct linux_dev_v0_funcs pv_v0devops;
98:
99: const char *pv_stdin;
100: const 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, int arg0, int arg1, int arg2, int arg3, int arg4);
128: } pv_fortheval;
129:
130: const struct linux_arguments_v0 * const *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: /* Prom version 3 memory allocation */
139: char * (*v3_memalloc)(char *va, unsigned int size, unsigned int align);
140:
141: int filler[14];
142:
143: /* This one is sun4c/sun4 only. */
144: void (*pv_setctxt)(int ctxt, char *va, int pmeg);
145:
146: /* Prom version 3 Multiprocessor routines. This stuff is crazy.
147: * No joke. Calling these when there is only one cpu probably
148: * crashes the machine, have to test this. :-)
149: */
150:
151: /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context
152: * 'thiscontext' executing at address 'prog_counter'
153: */
154: int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr,
155: int thiscontext, char *prog_counter);
156:
157: /* v3_cpustop() will cause cpu 'whichcpu' to stop executing
158: * until a resume cpu call is made.
159: */
160: int (*v3_cpustop)(unsigned int whichcpu);
161:
162: /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or
163: * resume cpu call is made.
164: */
165: int (*v3_cpuidle)(unsigned int whichcpu);
166:
167: /* v3_cpuresume() will resume processor 'whichcpu' executing
168: * starting with whatever 'pc' and 'npc' were left at the
169: * last 'idle' or 'stop' call.
170: */
171: int (*v3_cpuresume)(unsigned int whichcpu);
172: };
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, const char *name);
179: int (*no_getprop)(int node, const char *name, char *val);
180: int (*no_setprop)(int node, const char *name, char *val, int len);
181: const char * (*no_nextprop)(int node, const 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) */
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