1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 /* 2 /*
3 * misc.c: Miscellaneous prom functions that 3 * misc.c: Miscellaneous prom functions that don't belong
4 * anywhere else. 4 * anywhere else.
5 * 5 *
6 * Copyright (C) 1995 David S. Miller (davem@c 6 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
7 */ 7 */
8 8
9 #include <linux/types.h> 9 #include <linux/types.h>
10 #include <linux/kernel.h> 10 #include <linux/kernel.h>
11 #include <linux/sched.h> 11 #include <linux/sched.h>
12 #include <asm/sun3-head.h> 12 #include <asm/sun3-head.h>
13 #include <asm/idprom.h> 13 #include <asm/idprom.h>
14 #include <asm/openprom.h> 14 #include <asm/openprom.h>
15 #include <asm/oplib.h> 15 #include <asm/oplib.h>
16 #include <asm/movs.h> 16 #include <asm/movs.h>
17 17
18 /* Reset and reboot the machine with the comma 18 /* Reset and reboot the machine with the command 'bcommand'. */
19 void 19 void
20 prom_reboot(char *bcommand) 20 prom_reboot(char *bcommand)
21 { 21 {
22 unsigned long flags; 22 unsigned long flags;
23 local_irq_save(flags); 23 local_irq_save(flags);
24 (*(romvec->pv_reboot))(bcommand); 24 (*(romvec->pv_reboot))(bcommand);
25 local_irq_restore(flags); 25 local_irq_restore(flags);
26 } 26 }
27 27
28 /* Drop into the prom, with the chance to cont 28 /* Drop into the prom, with the chance to continue with the 'go'
29 * prom command. 29 * prom command.
30 */ 30 */
31 void 31 void
32 prom_cmdline(void) 32 prom_cmdline(void)
33 { 33 {
34 } 34 }
35 35
36 /* Drop into the prom, but completely terminat 36 /* Drop into the prom, but completely terminate the program.
37 * No chance of continuing. 37 * No chance of continuing.
38 */ 38 */
39 void 39 void
40 prom_halt(void) 40 prom_halt(void)
41 { 41 {
42 unsigned long flags; 42 unsigned long flags;
43 again: 43 again:
44 local_irq_save(flags); 44 local_irq_save(flags);
45 (*(romvec->pv_halt))(); 45 (*(romvec->pv_halt))();
46 local_irq_restore(flags); 46 local_irq_restore(flags);
47 goto again; /* PROM is out to get me - 47 goto again; /* PROM is out to get me -DaveM */
48 } 48 }
49 49
50 typedef void (*sfunc_t)(void); 50 typedef void (*sfunc_t)(void);
51 51
52 /* Get the idprom and stuff it into buffer 'id 52 /* Get the idprom and stuff it into buffer 'idbuf'. Returns the
53 * format type. 'num_bytes' is the number of 53 * format type. 'num_bytes' is the number of bytes that your idbuf
54 * has space for. Returns 0xff on error. 54 * has space for. Returns 0xff on error.
55 */ 55 */
56 unsigned char 56 unsigned char
57 prom_get_idprom(char *idbuf, int num_bytes) 57 prom_get_idprom(char *idbuf, int num_bytes)
58 { 58 {
59 int i, oldsfc; 59 int i, oldsfc;
60 GET_SFC(oldsfc); 60 GET_SFC(oldsfc);
61 SET_SFC(FC_CONTROL); 61 SET_SFC(FC_CONTROL);
62 for(i=0;i<num_bytes; i++) 62 for(i=0;i<num_bytes; i++)
63 { 63 {
64 /* There is a problem with the 64 /* There is a problem with the GET_CONTROL_BYTE
65 macro; defining the extra vari 65 macro; defining the extra variable
66 gets around it. 66 gets around it.
67 */ 67 */
68 int c; 68 int c;
69 GET_CONTROL_BYTE(SUN3_IDPROM_B 69 GET_CONTROL_BYTE(SUN3_IDPROM_BASE + i, c);
70 idbuf[i] = c; 70 idbuf[i] = c;
71 } 71 }
72 SET_SFC(oldsfc); 72 SET_SFC(oldsfc);
73 return idbuf[0]; 73 return idbuf[0];
74 } 74 }
75 75
76 /* Get the major prom version number. */ 76 /* Get the major prom version number. */
77 int 77 int
78 prom_version(void) 78 prom_version(void)
79 { 79 {
80 return romvec->pv_romvers; 80 return romvec->pv_romvers;
81 } 81 }
82 82
83 /* Get the prom plugin-revision. */ 83 /* Get the prom plugin-revision. */
84 int 84 int
85 prom_getrev(void) 85 prom_getrev(void)
86 { 86 {
87 return prom_rev; 87 return prom_rev;
88 } 88 }
89 89
90 /* Get the prom firmware print revision. */ 90 /* Get the prom firmware print revision. */
91 int 91 int
92 prom_getprev(void) 92 prom_getprev(void)
93 { 93 {
94 return prom_prev; 94 return prom_prev;
95 } 95 }
96 96
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