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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc/prom
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/sparc/prom')
-rw-r--r--arch/sparc/prom/Makefile9
-rw-r--r--arch/sparc/prom/bootstr.c63
-rw-r--r--arch/sparc/prom/console.c220
-rw-r--r--arch/sparc/prom/devmap.c54
-rw-r--r--arch/sparc/prom/devops.c89
-rw-r--r--arch/sparc/prom/init.c95
-rw-r--r--arch/sparc/prom/memory.c216
-rw-r--r--arch/sparc/prom/misc.c139
-rw-r--r--arch/sparc/prom/mp.c121
-rw-r--r--arch/sparc/prom/palloc.c44
-rw-r--r--arch/sparc/prom/printf.c46
-rw-r--r--arch/sparc/prom/ranges.c118
-rw-r--r--arch/sparc/prom/segment.c29
-rw-r--r--arch/sparc/prom/sun4prom.c161
-rw-r--r--arch/sparc/prom/tree.c364
15 files changed, 1768 insertions, 0 deletions
diff --git a/arch/sparc/prom/Makefile b/arch/sparc/prom/Makefile
new file mode 100644
index 000000000000..2b217ee40703
--- /dev/null
+++ b/arch/sparc/prom/Makefile
@@ -0,0 +1,9 @@
1# $Id: Makefile,v 1.8 2000/12/15 00:41:22 davem Exp $
2# Makefile for the Sun Boot PROM interface library under
3# Linux.
4#
5
6lib-y := bootstr.o devmap.o devops.o init.o memory.o misc.o mp.o \
7 palloc.o ranges.o segment.o console.o printf.o tree.o
8
9lib-$(CONFIG_SUN4) += sun4prom.o
diff --git a/arch/sparc/prom/bootstr.c b/arch/sparc/prom/bootstr.c
new file mode 100644
index 000000000000..cfdeac2788d1
--- /dev/null
+++ b/arch/sparc/prom/bootstr.c
@@ -0,0 +1,63 @@
1/* $Id: bootstr.c,v 1.20 2000/02/08 20:24:23 davem Exp $
2 * bootstr.c: Boot string/argument acquisition from the PROM.
3 *
4 * Copyright(C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 */
6
7#include <linux/string.h>
8#include <asm/oplib.h>
9#include <asm/sun4prom.h>
10#include <linux/init.h>
11
12#define BARG_LEN 256
13static char barg_buf[BARG_LEN] = { 0 };
14static char fetched __initdata = 0;
15
16extern linux_sun4_romvec *sun4_romvec;
17
18char * __init
19prom_getbootargs(void)
20{
21 int iter;
22 char *cp, *arg;
23
24 /* This check saves us from a panic when bootfd patches args. */
25 if (fetched) {
26 return barg_buf;
27 }
28
29 switch(prom_vers) {
30 case PROM_V0:
31 case PROM_SUN4:
32 cp = barg_buf;
33 /* Start from 1 and go over fd(0,0,0)kernel */
34 for(iter = 1; iter < 8; iter++) {
35 arg = (*(romvec->pv_v0bootargs))->argv[iter];
36 if(arg == 0) break;
37 while(*arg != 0) {
38 /* Leave place for space and null. */
39 if(cp >= barg_buf + BARG_LEN-2){
40 /* We might issue a warning here. */
41 break;
42 }
43 *cp++ = *arg++;
44 }
45 *cp++ = ' ';
46 }
47 *cp = 0;
48 break;
49 case PROM_V2:
50 case PROM_V3:
51 /*
52 * V3 PROM cannot supply as with more than 128 bytes
53 * of an argument. But a smart bootstrap loader can.
54 */
55 strlcpy(barg_buf, *romvec->pv_v2bootargs.bootargs, sizeof(barg_buf));
56 break;
57 default:
58 break;
59 }
60
61 fetched = 1;
62 return barg_buf;
63}
diff --git a/arch/sparc/prom/console.c b/arch/sparc/prom/console.c
new file mode 100644
index 000000000000..4e6e41d3291d
--- /dev/null
+++ b/arch/sparc/prom/console.c
@@ -0,0 +1,220 @@
1/* $Id: console.c,v 1.25 2001/10/30 04:54:22 davem Exp $
2 * console.c: Routines that deal with sending and receiving IO
3 * to/from the current console device using the PROM.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1998 Pete Zaitcev <zaitcev@yahoo.com>
7 */
8
9#include <linux/types.h>
10#include <linux/kernel.h>
11#include <linux/sched.h>
12#include <asm/openprom.h>
13#include <asm/sun4prom.h>
14#include <asm/oplib.h>
15#include <asm/system.h>
16#include <linux/string.h>
17
18extern void restore_current(void);
19
20static char con_name_jmc[] = "/obio/su@"; /* "/obio/su@0,3002f8"; */
21#define CON_SIZE_JMC (sizeof(con_name_jmc))
22
23/* Non blocking get character from console input device, returns -1
24 * if no input was taken. This can be used for polling.
25 */
26int
27prom_nbgetchar(void)
28{
29 static char inc;
30 int i = -1;
31 unsigned long flags;
32
33 spin_lock_irqsave(&prom_lock, flags);
34 switch(prom_vers) {
35 case PROM_V0:
36 case PROM_SUN4:
37 i = (*(romvec->pv_nbgetchar))();
38 break;
39 case PROM_V2:
40 case PROM_V3:
41 if( (*(romvec->pv_v2devops).v2_dev_read)(*romvec->pv_v2bootargs.fd_stdin , &inc, 0x1) == 1) {
42 i = inc;
43 } else {
44 i = -1;
45 }
46 break;
47 default:
48 i = -1;
49 break;
50 };
51 restore_current();
52 spin_unlock_irqrestore(&prom_lock, flags);
53 return i; /* Ugh, we could spin forever on unsupported proms ;( */
54}
55
56/* Non blocking put character to console device, returns -1 if
57 * unsuccessful.
58 */
59int
60prom_nbputchar(char c)
61{
62 static char outc;
63 unsigned long flags;
64 int i = -1;
65
66 spin_lock_irqsave(&prom_lock, flags);
67 switch(prom_vers) {
68 case PROM_V0:
69 case PROM_SUN4:
70 i = (*(romvec->pv_nbputchar))(c);
71 break;
72 case PROM_V2:
73 case PROM_V3:
74 outc = c;
75 if( (*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout, &outc, 0x1) == 1)
76 i = 0;
77 else
78 i = -1;
79 break;
80 default:
81 i = -1;
82 break;
83 };
84 restore_current();
85 spin_unlock_irqrestore(&prom_lock, flags);
86 return i; /* Ugh, we could spin forever on unsupported proms ;( */
87}
88
89/* Blocking version of get character routine above. */
90char
91prom_getchar(void)
92{
93 int character;
94 while((character = prom_nbgetchar()) == -1) ;
95 return (char) character;
96}
97
98/* Blocking version of put character routine above. */
99void
100prom_putchar(char c)
101{
102 while(prom_nbputchar(c) == -1) ;
103 return;
104}
105
106/* Query for input device type */
107enum prom_input_device
108prom_query_input_device(void)
109{
110 unsigned long flags;
111 int st_p;
112 char propb[64];
113 char *p;
114 int propl;
115
116 switch(prom_vers) {
117 case PROM_V0:
118 case PROM_V2:
119 case PROM_SUN4:
120 default:
121 switch(*romvec->pv_stdin) {
122 case PROMDEV_KBD: return PROMDEV_IKBD;
123 case PROMDEV_TTYA: return PROMDEV_ITTYA;
124 case PROMDEV_TTYB: return PROMDEV_ITTYB;
125 default:
126 return PROMDEV_I_UNK;
127 };
128 case PROM_V3:
129 spin_lock_irqsave(&prom_lock, flags);
130 st_p = (*romvec->pv_v2devops.v2_inst2pkg)(*romvec->pv_v2bootargs.fd_stdin);
131 restore_current();
132 spin_unlock_irqrestore(&prom_lock, flags);
133 if(prom_node_has_property(st_p, "keyboard"))
134 return PROMDEV_IKBD;
135 if (prom_getproperty(st_p, "name", propb, sizeof(propb)) != -1) {
136 if(strncmp(propb, "keyboard", sizeof("serial")) == 0)
137 return PROMDEV_IKBD;
138 }
139 if (prom_getproperty(st_p, "device_type", propb, sizeof(propb)) != -1) {
140 if(strncmp(propb, "serial", sizeof("serial")))
141 return PROMDEV_I_UNK;
142 }
143 propl = prom_getproperty(prom_root_node, "stdin-path", propb, sizeof(propb));
144 if(propl > 2) {
145 p = propb;
146 while(*p) p++; p -= 2;
147 if(p[0] == ':') {
148 if(p[1] == 'a')
149 return PROMDEV_ITTYA;
150 else if(p[1] == 'b')
151 return PROMDEV_ITTYB;
152 }
153 }
154 return PROMDEV_I_UNK;
155 }
156}
157
158/* Query for output device type */
159
160enum prom_output_device
161prom_query_output_device(void)
162{
163 unsigned long flags;
164 int st_p;
165 char propb[64];
166 char *p;
167 int propl;
168
169 switch(prom_vers) {
170 case PROM_V0:
171 case PROM_SUN4:
172 switch(*romvec->pv_stdin) {
173 case PROMDEV_SCREEN: return PROMDEV_OSCREEN;
174 case PROMDEV_TTYA: return PROMDEV_OTTYA;
175 case PROMDEV_TTYB: return PROMDEV_OTTYB;
176 };
177 break;
178 case PROM_V2:
179 case PROM_V3:
180 spin_lock_irqsave(&prom_lock, flags);
181 st_p = (*romvec->pv_v2devops.v2_inst2pkg)(*romvec->pv_v2bootargs.fd_stdout);
182 restore_current();
183 spin_unlock_irqrestore(&prom_lock, flags);
184 propl = prom_getproperty(st_p, "device_type", propb, sizeof(propb));
185 if (propl == sizeof("display") &&
186 strncmp("display", propb, sizeof("display")) == 0)
187 {
188 return PROMDEV_OSCREEN;
189 }
190 if(prom_vers == PROM_V3) {
191 if(propl >= 0 &&
192 strncmp("serial", propb, sizeof("serial")) != 0)
193 return PROMDEV_O_UNK;
194 propl = prom_getproperty(prom_root_node, "stdout-path",
195 propb, sizeof(propb));
196 if(propl == CON_SIZE_JMC &&
197 strncmp(propb, con_name_jmc, CON_SIZE_JMC) == 0)
198 return PROMDEV_OTTYA;
199 if(propl > 2) {
200 p = propb;
201 while(*p) p++; p-= 2;
202 if(p[0]==':') {
203 if(p[1] == 'a')
204 return PROMDEV_OTTYA;
205 else if(p[1] == 'b')
206 return PROMDEV_OTTYB;
207 }
208 }
209 } else {
210 switch(*romvec->pv_stdin) {
211 case PROMDEV_TTYA: return PROMDEV_OTTYA;
212 case PROMDEV_TTYB: return PROMDEV_OTTYB;
213 };
214 }
215 break;
216 default:
217 ;
218 };
219 return PROMDEV_O_UNK;
220}
diff --git a/arch/sparc/prom/devmap.c b/arch/sparc/prom/devmap.c
new file mode 100644
index 000000000000..eb12073578ad
--- /dev/null
+++ b/arch/sparc/prom/devmap.c
@@ -0,0 +1,54 @@
1/* $Id: devmap.c,v 1.7 2000/08/26 02:38:03 anton Exp $
2 * promdevmap.c: Map device/IO areas to virtual addresses.
3 *
4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 */
6
7#include <linux/types.h>
8#include <linux/kernel.h>
9#include <linux/sched.h>
10
11#include <asm/openprom.h>
12#include <asm/oplib.h>
13
14extern void restore_current(void);
15
16/* Just like the routines in palloc.c, these should not be used
17 * by the kernel at all. Bootloader facility mainly. And again,
18 * this is only available on V2 proms and above.
19 */
20
21/* Map physical device address 'paddr' in IO space 'ios' of size
22 * 'num_bytes' to a virtual address, with 'vhint' being a hint to
23 * the prom as to where you would prefer the mapping. We return
24 * where the prom actually mapped it.
25 */
26char *
27prom_mapio(char *vhint, int ios, unsigned int paddr, unsigned int num_bytes)
28{
29 unsigned long flags;
30 char *ret;
31
32 spin_lock_irqsave(&prom_lock, flags);
33 if((num_bytes == 0) || (paddr == 0)) ret = (char *) 0x0;
34 else
35 ret = (*(romvec->pv_v2devops.v2_dumb_mmap))(vhint, ios, paddr,
36 num_bytes);
37 restore_current();
38 spin_unlock_irqrestore(&prom_lock, flags);
39 return ret;
40}
41
42/* Unmap an IO/device area that was mapped using the above routine. */
43void
44prom_unmapio(char *vaddr, unsigned int num_bytes)
45{
46 unsigned long flags;
47
48 if(num_bytes == 0x0) return;
49 spin_lock_irqsave(&prom_lock, flags);
50 (*(romvec->pv_v2devops.v2_dumb_munmap))(vaddr, num_bytes);
51 restore_current();
52 spin_unlock_irqrestore(&prom_lock, flags);
53 return;
54}
diff --git a/arch/sparc/prom/devops.c b/arch/sparc/prom/devops.c
new file mode 100644
index 000000000000..61919b54f6cc
--- /dev/null
+++ b/arch/sparc/prom/devops.c
@@ -0,0 +1,89 @@
1/* $Id: devops.c,v 1.13 2000/08/26 02:38:03 anton Exp $
2 * devops.c: Device operations using the PROM.
3 *
4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 */
6#include <linux/types.h>
7#include <linux/kernel.h>
8#include <linux/sched.h>
9
10#include <asm/openprom.h>
11#include <asm/oplib.h>
12
13extern void restore_current(void);
14
15/* Open the device described by the string 'dstr'. Returns the handle
16 * to that device used for subsequent operations on that device.
17 * Returns -1 on failure.
18 */
19int
20prom_devopen(char *dstr)
21{
22 int handle;
23 unsigned long flags;
24 spin_lock_irqsave(&prom_lock, flags);
25 switch(prom_vers) {
26 case PROM_V0:
27 handle = (*(romvec->pv_v0devops.v0_devopen))(dstr);
28 if(handle == 0) handle = -1;
29 break;
30 case PROM_V2:
31 case PROM_V3:
32 handle = (*(romvec->pv_v2devops.v2_dev_open))(dstr);
33 break;
34 default:
35 handle = -1;
36 break;
37 };
38 restore_current();
39 spin_unlock_irqrestore(&prom_lock, flags);
40
41 return handle;
42}
43
44/* Close the device described by device handle 'dhandle'. */
45int
46prom_devclose(int dhandle)
47{
48 unsigned long flags;
49 spin_lock_irqsave(&prom_lock, flags);
50 switch(prom_vers) {
51 case PROM_V0:
52 (*(romvec->pv_v0devops.v0_devclose))(dhandle);
53 break;
54 case PROM_V2:
55 case PROM_V3:
56 (*(romvec->pv_v2devops.v2_dev_close))(dhandle);
57 break;
58 default:
59 break;
60 };
61 restore_current();
62 spin_unlock_irqrestore(&prom_lock, flags);
63 return 0;
64}
65
66/* Seek to specified location described by 'seekhi' and 'seeklo'
67 * for device 'dhandle'.
68 */
69void
70prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
71{
72 unsigned long flags;
73 spin_lock_irqsave(&prom_lock, flags);
74 switch(prom_vers) {
75 case PROM_V0:
76 (*(romvec->pv_v0devops.v0_seekdev))(dhandle, seekhi, seeklo);
77 break;
78 case PROM_V2:
79 case PROM_V3:
80 (*(romvec->pv_v2devops.v2_dev_seek))(dhandle, seekhi, seeklo);
81 break;
82 default:
83 break;
84 };
85 restore_current();
86 spin_unlock_irqrestore(&prom_lock, flags);
87
88 return;
89}
diff --git a/arch/sparc/prom/init.c b/arch/sparc/prom/init.c
new file mode 100644
index 000000000000..b83409c81916
--- /dev/null
+++ b/arch/sparc/prom/init.c
@@ -0,0 +1,95 @@
1/* $Id: init.c,v 1.14 2000/01/29 01:09:12 anton Exp $
2 * init.c: Initialize internal variables used by the PROM
3 * library functions.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
7 */
8
9#include <linux/config.h>
10#include <linux/kernel.h>
11#include <linux/init.h>
12
13#include <asm/openprom.h>
14#include <asm/oplib.h>
15#include <asm/sun4prom.h>
16
17struct linux_romvec *romvec;
18enum prom_major_version prom_vers;
19unsigned int prom_rev, prom_prev;
20linux_sun4_romvec *sun4_romvec;
21
22/* The root node of the prom device tree. */
23int prom_root_node;
24
25int prom_stdin, prom_stdout;
26
27/* Pointer to the device tree operations structure. */
28struct linux_nodeops *prom_nodeops;
29
30/* You must call prom_init() before you attempt to use any of the
31 * routines in the prom library. It returns 0 on success, 1 on
32 * failure. It gets passed the pointer to the PROM vector.
33 */
34
35extern void prom_meminit(void);
36extern void prom_ranges_init(void);
37
38void __init prom_init(struct linux_romvec *rp)
39{
40#ifdef CONFIG_SUN4
41 extern struct linux_romvec *sun4_prom_init(void);
42 rp = sun4_prom_init();
43#endif
44 romvec = rp;
45
46 switch(romvec->pv_romvers) {
47 case 0:
48 prom_vers = PROM_V0;
49 break;
50 case 2:
51 prom_vers = PROM_V2;
52 break;
53 case 3:
54 prom_vers = PROM_V3;
55 break;
56 case 40:
57 prom_vers = PROM_SUN4;
58 break;
59 default:
60 prom_printf("PROMLIB: Bad PROM version %d\n",
61 romvec->pv_romvers);
62 prom_halt();
63 break;
64 };
65
66 prom_rev = romvec->pv_plugin_revision;
67 prom_prev = romvec->pv_printrev;
68 prom_nodeops = romvec->pv_nodeops;
69
70 prom_root_node = prom_getsibling(0);
71 if((prom_root_node == 0) || (prom_root_node == -1))
72 prom_halt();
73
74 if((((unsigned long) prom_nodeops) == 0) ||
75 (((unsigned long) prom_nodeops) == -1))
76 prom_halt();
77
78 if(prom_vers == PROM_V2 || prom_vers == PROM_V3) {
79 prom_stdout = *romvec->pv_v2bootargs.fd_stdout;
80 prom_stdin = *romvec->pv_v2bootargs.fd_stdin;
81 }
82
83 prom_meminit();
84
85 prom_ranges_init();
86
87#ifndef CONFIG_SUN4
88 /* SUN4 prints this in sun4_prom_init */
89 printk("PROMLIB: Sun Boot Prom Version %d Revision %d\n",
90 romvec->pv_romvers, prom_rev);
91#endif
92
93 /* Initialization successful. */
94 return;
95}
diff --git a/arch/sparc/prom/memory.c b/arch/sparc/prom/memory.c
new file mode 100644
index 000000000000..46aa51afec14
--- /dev/null
+++ b/arch/sparc/prom/memory.c
@@ -0,0 +1,216 @@
1/* $Id: memory.c,v 1.15 2000/01/29 01:09:12 anton Exp $
2 * memory.c: Prom routine for acquiring various bits of information
3 * about RAM on the machine, both virtual and physical.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1997 Michael A. Griffith (grif@acm.org)
7 */
8
9#include <linux/config.h>
10#include <linux/kernel.h>
11#include <linux/init.h>
12
13#include <asm/openprom.h>
14#include <asm/sun4prom.h>
15#include <asm/oplib.h>
16
17/* This routine, for consistency, returns the ram parameters in the
18 * V0 prom memory descriptor format. I choose this format because I
19 * think it was the easiest to work with. I feel the religious
20 * arguments now... ;) Also, I return the linked lists sorted to
21 * prevent paging_init() upset stomach as I have not yet written
22 * the pepto-bismol kernel module yet.
23 */
24
25struct linux_prom_registers prom_reg_memlist[64];
26struct linux_prom_registers prom_reg_tmp[64];
27
28struct linux_mlist_v0 prom_phys_total[64];
29struct linux_mlist_v0 prom_prom_taken[64];
30struct linux_mlist_v0 prom_phys_avail[64];
31
32struct linux_mlist_v0 *prom_ptot_ptr = prom_phys_total;
33struct linux_mlist_v0 *prom_ptak_ptr = prom_prom_taken;
34struct linux_mlist_v0 *prom_pavl_ptr = prom_phys_avail;
35
36struct linux_mem_v0 prom_memlist;
37
38
39/* Internal Prom library routine to sort a linux_mlist_v0 memory
40 * list. Used below in initialization.
41 */
42static void __init
43prom_sortmemlist(struct linux_mlist_v0 *thislist)
44{
45 int swapi = 0;
46 int i, mitr, tmpsize;
47 char *tmpaddr;
48 char *lowest;
49
50 for(i=0; thislist[i].theres_more != 0; i++) {
51 lowest = thislist[i].start_adr;
52 for(mitr = i+1; thislist[mitr-1].theres_more != 0; mitr++)
53 if(thislist[mitr].start_adr < lowest) {
54 lowest = thislist[mitr].start_adr;
55 swapi = mitr;
56 }
57 if(lowest == thislist[i].start_adr) continue;
58 tmpaddr = thislist[swapi].start_adr;
59 tmpsize = thislist[swapi].num_bytes;
60 for(mitr = swapi; mitr > i; mitr--) {
61 thislist[mitr].start_adr = thislist[mitr-1].start_adr;
62 thislist[mitr].num_bytes = thislist[mitr-1].num_bytes;
63 }
64 thislist[i].start_adr = tmpaddr;
65 thislist[i].num_bytes = tmpsize;
66 }
67
68 return;
69}
70
71/* Initialize the memory lists based upon the prom version. */
72void __init prom_meminit(void)
73{
74 int node = 0;
75 unsigned int iter, num_regs;
76 struct linux_mlist_v0 *mptr; /* ptr for traversal */
77
78 switch(prom_vers) {
79 case PROM_V0:
80 /* Nice, kind of easier to do in this case. */
81 /* First, the total physical descriptors. */
82 for(mptr = (*(romvec->pv_v0mem.v0_totphys)), iter=0;
83 mptr; mptr=mptr->theres_more, iter++) {
84 prom_phys_total[iter].start_adr = mptr->start_adr;
85 prom_phys_total[iter].num_bytes = mptr->num_bytes;
86 prom_phys_total[iter].theres_more = &prom_phys_total[iter+1];
87 }
88 prom_phys_total[iter-1].theres_more = 0x0;
89 /* Second, the total prom taken descriptors. */
90 for(mptr = (*(romvec->pv_v0mem.v0_prommap)), iter=0;
91 mptr; mptr=mptr->theres_more, iter++) {
92 prom_prom_taken[iter].start_adr = mptr->start_adr;
93 prom_prom_taken[iter].num_bytes = mptr->num_bytes;
94 prom_prom_taken[iter].theres_more = &prom_prom_taken[iter+1];
95 }
96 prom_prom_taken[iter-1].theres_more = 0x0;
97 /* Last, the available physical descriptors. */
98 for(mptr = (*(romvec->pv_v0mem.v0_available)), iter=0;
99 mptr; mptr=mptr->theres_more, iter++) {
100 prom_phys_avail[iter].start_adr = mptr->start_adr;
101 prom_phys_avail[iter].num_bytes = mptr->num_bytes;
102 prom_phys_avail[iter].theres_more = &prom_phys_avail[iter+1];
103 }
104 prom_phys_avail[iter-1].theres_more = 0x0;
105 /* Sort all the lists. */
106 prom_sortmemlist(prom_phys_total);
107 prom_sortmemlist(prom_prom_taken);
108 prom_sortmemlist(prom_phys_avail);
109 break;
110 case PROM_V2:
111 case PROM_V3:
112 /* Grrr, have to traverse the prom device tree ;( */
113 node = prom_getchild(prom_root_node);
114 node = prom_searchsiblings(node, "memory");
115 num_regs = prom_getproperty(node, "available",
116 (char *) prom_reg_memlist,
117 sizeof(prom_reg_memlist));
118 num_regs = (num_regs/sizeof(struct linux_prom_registers));
119 for(iter=0; iter<num_regs; iter++) {
120 prom_phys_avail[iter].start_adr =
121 (char *) prom_reg_memlist[iter].phys_addr;
122 prom_phys_avail[iter].num_bytes =
123 (unsigned long) prom_reg_memlist[iter].reg_size;
124 prom_phys_avail[iter].theres_more =
125 &prom_phys_avail[iter+1];
126 }
127 prom_phys_avail[iter-1].theres_more = 0x0;
128
129 num_regs = prom_getproperty(node, "reg",
130 (char *) prom_reg_memlist,
131 sizeof(prom_reg_memlist));
132 num_regs = (num_regs/sizeof(struct linux_prom_registers));
133 for(iter=0; iter<num_regs; iter++) {
134 prom_phys_total[iter].start_adr =
135 (char *) prom_reg_memlist[iter].phys_addr;
136 prom_phys_total[iter].num_bytes =
137 (unsigned long) prom_reg_memlist[iter].reg_size;
138 prom_phys_total[iter].theres_more =
139 &prom_phys_total[iter+1];
140 }
141 prom_phys_total[iter-1].theres_more = 0x0;
142
143 node = prom_getchild(prom_root_node);
144 node = prom_searchsiblings(node, "virtual-memory");
145 num_regs = prom_getproperty(node, "available",
146 (char *) prom_reg_memlist,
147 sizeof(prom_reg_memlist));
148 num_regs = (num_regs/sizeof(struct linux_prom_registers));
149
150 /* Convert available virtual areas to taken virtual
151 * areas. First sort, then convert.
152 */
153 for(iter=0; iter<num_regs; iter++) {
154 prom_prom_taken[iter].start_adr =
155 (char *) prom_reg_memlist[iter].phys_addr;
156 prom_prom_taken[iter].num_bytes =
157 (unsigned long) prom_reg_memlist[iter].reg_size;
158 prom_prom_taken[iter].theres_more =
159 &prom_prom_taken[iter+1];
160 }
161 prom_prom_taken[iter-1].theres_more = 0x0;
162
163 prom_sortmemlist(prom_prom_taken);
164
165 /* Finally, convert. */
166 for(iter=0; iter<num_regs; iter++) {
167 prom_prom_taken[iter].start_adr =
168 prom_prom_taken[iter].start_adr +
169 prom_prom_taken[iter].num_bytes;
170 prom_prom_taken[iter].num_bytes =
171 prom_prom_taken[iter+1].start_adr -
172 prom_prom_taken[iter].start_adr;
173 }
174 prom_prom_taken[iter-1].num_bytes =
175 0xffffffff - (unsigned long) prom_prom_taken[iter-1].start_adr;
176
177 /* Sort the other two lists. */
178 prom_sortmemlist(prom_phys_total);
179 prom_sortmemlist(prom_phys_avail);
180 break;
181
182 case PROM_SUN4:
183#ifdef CONFIG_SUN4
184 /* how simple :) */
185 prom_phys_total[0].start_adr = 0x0;
186 prom_phys_total[0].num_bytes = *(sun4_romvec->memorysize);
187 prom_phys_total[0].theres_more = 0x0;
188 prom_prom_taken[0].start_adr = 0x0;
189 prom_prom_taken[0].num_bytes = 0x0;
190 prom_prom_taken[0].theres_more = 0x0;
191 prom_phys_avail[0].start_adr = 0x0;
192 prom_phys_avail[0].num_bytes = *(sun4_romvec->memoryavail);
193 prom_phys_avail[0].theres_more = 0x0;
194#endif
195 break;
196
197 default:
198 break;
199 };
200
201 /* Link all the lists into the top-level descriptor. */
202 prom_memlist.v0_totphys=&prom_ptot_ptr;
203 prom_memlist.v0_prommap=&prom_ptak_ptr;
204 prom_memlist.v0_available=&prom_pavl_ptr;
205
206 return;
207}
208
209/* This returns a pointer to our libraries internal v0 format
210 * memory descriptor.
211 */
212struct linux_mem_v0 *
213prom_meminfo(void)
214{
215 return &prom_memlist;
216}
diff --git a/arch/sparc/prom/misc.c b/arch/sparc/prom/misc.c
new file mode 100644
index 000000000000..c840c2062342
--- /dev/null
+++ b/arch/sparc/prom/misc.c
@@ -0,0 +1,139 @@
1/* $Id: misc.c,v 1.18 2000/08/26 02:38:03 anton Exp $
2 * misc.c: Miscellaneous prom functions that don't belong
3 * anywhere else.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 */
7
8#include <linux/config.h>
9#include <linux/types.h>
10#include <linux/kernel.h>
11#include <linux/sched.h>
12#include <asm/openprom.h>
13#include <asm/oplib.h>
14#include <asm/auxio.h>
15#include <asm/system.h>
16
17extern void restore_current(void);
18
19DEFINE_SPINLOCK(prom_lock);
20
21/* Reset and reboot the machine with the command 'bcommand'. */
22void
23prom_reboot(char *bcommand)
24{
25 unsigned long flags;
26 spin_lock_irqsave(&prom_lock, flags);
27 (*(romvec->pv_reboot))(bcommand);
28 /* Never get here. */
29 restore_current();
30 spin_unlock_irqrestore(&prom_lock, flags);
31}
32
33/* Forth evaluate the expression contained in 'fstring'. */
34void
35prom_feval(char *fstring)
36{
37 unsigned long flags;
38 if(!fstring || fstring[0] == 0)
39 return;
40 spin_lock_irqsave(&prom_lock, flags);
41 if(prom_vers == PROM_V0)
42 (*(romvec->pv_fortheval.v0_eval))(strlen(fstring), fstring);
43 else
44 (*(romvec->pv_fortheval.v2_eval))(fstring);
45 restore_current();
46 spin_unlock_irqrestore(&prom_lock, flags);
47}
48
49/* We want to do this more nicely some day. */
50extern void (*prom_palette)(int);
51
52/* Drop into the prom, with the chance to continue with the 'go'
53 * prom command.
54 */
55void
56prom_cmdline(void)
57{
58 extern void install_obp_ticker(void);
59 extern void install_linux_ticker(void);
60 unsigned long flags;
61
62 if(!serial_console && prom_palette)
63 prom_palette (1);
64 spin_lock_irqsave(&prom_lock, flags);
65 install_obp_ticker();
66 (*(romvec->pv_abort))();
67 restore_current();
68 install_linux_ticker();
69 spin_unlock_irqrestore(&prom_lock, flags);
70#ifdef CONFIG_SUN_AUXIO
71 set_auxio(AUXIO_LED, 0);
72#endif
73 if(!serial_console && prom_palette)
74 prom_palette (0);
75}
76
77/* Drop into the prom, but completely terminate the program.
78 * No chance of continuing.
79 */
80void
81prom_halt(void)
82{
83 unsigned long flags;
84again:
85 spin_lock_irqsave(&prom_lock, flags);
86 (*(romvec->pv_halt))();
87 /* Never get here. */
88 restore_current();
89 spin_unlock_irqrestore(&prom_lock, flags);
90 goto again; /* PROM is out to get me -DaveM */
91}
92
93typedef void (*sfunc_t)(void);
94
95/* Set prom sync handler to call function 'funcp'. */
96void
97prom_setsync(sfunc_t funcp)
98{
99 if(!funcp) return;
100 *romvec->pv_synchook = funcp;
101}
102
103/* Get the idprom and stuff it into buffer 'idbuf'. Returns the
104 * format type. 'num_bytes' is the number of bytes that your idbuf
105 * has space for. Returns 0xff on error.
106 */
107unsigned char
108prom_get_idprom(char *idbuf, int num_bytes)
109{
110 int len;
111
112 len = prom_getproplen(prom_root_node, "idprom");
113 if((len>num_bytes) || (len==-1)) return 0xff;
114 if(!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
115 return idbuf[0];
116
117 return 0xff;
118}
119
120/* Get the major prom version number. */
121int
122prom_version(void)
123{
124 return romvec->pv_romvers;
125}
126
127/* Get the prom plugin-revision. */
128int
129prom_getrev(void)
130{
131 return prom_rev;
132}
133
134/* Get the prom firmware print revision. */
135int
136prom_getprev(void)
137{
138 return prom_prev;
139}
diff --git a/arch/sparc/prom/mp.c b/arch/sparc/prom/mp.c
new file mode 100644
index 000000000000..92fe3739fdb8
--- /dev/null
+++ b/arch/sparc/prom/mp.c
@@ -0,0 +1,121 @@
1/* $Id: mp.c,v 1.12 2000/08/26 02:38:03 anton Exp $
2 * mp.c: OpenBoot Prom Multiprocessor support routines. Don't call
3 * these on a UP or else you will halt and catch fire. ;)
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 */
7
8#include <linux/types.h>
9#include <linux/kernel.h>
10#include <linux/sched.h>
11
12#include <asm/openprom.h>
13#include <asm/oplib.h>
14
15extern void restore_current(void);
16
17/* Start cpu with prom-tree node 'cpunode' using context described
18 * by 'ctable_reg' in context 'ctx' at program counter 'pc'.
19 *
20 * XXX Have to look into what the return values mean. XXX
21 */
22int
23prom_startcpu(int cpunode, struct linux_prom_registers *ctable_reg, int ctx, char *pc)
24{
25 int ret;
26 unsigned long flags;
27
28 spin_lock_irqsave(&prom_lock, flags);
29 switch(prom_vers) {
30 case PROM_V0:
31 case PROM_V2:
32 default:
33 ret = -1;
34 break;
35 case PROM_V3:
36 ret = (*(romvec->v3_cpustart))(cpunode, (int) ctable_reg, ctx, pc);
37 break;
38 };
39 restore_current();
40 spin_unlock_irqrestore(&prom_lock, flags);
41
42 return ret;
43}
44
45/* Stop CPU with device prom-tree node 'cpunode'.
46 * XXX Again, what does the return value really mean? XXX
47 */
48int
49prom_stopcpu(int cpunode)
50{
51 int ret;
52 unsigned long flags;
53
54 spin_lock_irqsave(&prom_lock, flags);
55 switch(prom_vers) {
56 case PROM_V0:
57 case PROM_V2:
58 default:
59 ret = -1;
60 break;
61 case PROM_V3:
62 ret = (*(romvec->v3_cpustop))(cpunode);
63 break;
64 };
65 restore_current();
66 spin_unlock_irqrestore(&prom_lock, flags);
67
68 return ret;
69}
70
71/* Make CPU with device prom-tree node 'cpunode' idle.
72 * XXX Return value, anyone? XXX
73 */
74int
75prom_idlecpu(int cpunode)
76{
77 int ret;
78 unsigned long flags;
79
80 spin_lock_irqsave(&prom_lock, flags);
81 switch(prom_vers) {
82 case PROM_V0:
83 case PROM_V2:
84 default:
85 ret = -1;
86 break;
87 case PROM_V3:
88 ret = (*(romvec->v3_cpuidle))(cpunode);
89 break;
90 };
91 restore_current();
92 spin_unlock_irqrestore(&prom_lock, flags);
93
94 return ret;
95}
96
97/* Resume the execution of CPU with nodeid 'cpunode'.
98 * XXX Come on, somebody has to know... XXX
99 */
100int
101prom_restartcpu(int cpunode)
102{
103 int ret;
104 unsigned long flags;
105
106 spin_lock_irqsave(&prom_lock, flags);
107 switch(prom_vers) {
108 case PROM_V0:
109 case PROM_V2:
110 default:
111 ret = -1;
112 break;
113 case PROM_V3:
114 ret = (*(romvec->v3_cpuresume))(cpunode);
115 break;
116 };
117 restore_current();
118 spin_unlock_irqrestore(&prom_lock, flags);
119
120 return ret;
121}
diff --git a/arch/sparc/prom/palloc.c b/arch/sparc/prom/palloc.c
new file mode 100644
index 000000000000..84ce8bc54473
--- /dev/null
+++ b/arch/sparc/prom/palloc.c
@@ -0,0 +1,44 @@
1/* $Id: palloc.c,v 1.4 1996/04/25 06:09:48 davem Exp $
2 * palloc.c: Memory allocation from the Sun PROM.
3 *
4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 */
6
7#include <asm/openprom.h>
8#include <asm/oplib.h>
9
10/* You should not call these routines after memory management
11 * has been initialized in the kernel, if fact you should not
12 * use these if at all possible in the kernel. They are mainly
13 * to be used for a bootloader for temporary allocations which
14 * it will free before jumping into the kernel it has loaded.
15 *
16 * Also, these routines don't work on V0 proms, only V2 and later.
17 */
18
19/* Allocate a chunk of memory of size 'num_bytes' giving a suggestion
20 * of virtual_hint as the preferred virtual base address of this chunk.
21 * There are no guarantees that you will get the allocation, or that
22 * the prom will abide by your "hint". So check your return value.
23 */
24char *
25prom_alloc(char *virtual_hint, unsigned int num_bytes)
26{
27 if(prom_vers == PROM_V0) return (char *) 0x0;
28 if(num_bytes == 0x0) return (char *) 0x0;
29 return (*(romvec->pv_v2devops.v2_dumb_mem_alloc))(virtual_hint, num_bytes);
30}
31
32/* Free a previously allocated chunk back to the prom at virtual address
33 * 'vaddr' of size 'num_bytes'. NOTE: This vaddr is not the hint you
34 * used for the allocation, but the virtual address the prom actually
35 * returned to you. They may be have been the same, they may have not,
36 * doesn't matter.
37 */
38void
39prom_free(char *vaddr, unsigned int num_bytes)
40{
41 if((prom_vers == PROM_V0) || (num_bytes == 0x0)) return;
42 (*(romvec->pv_v2devops.v2_dumb_mem_free))(vaddr, num_bytes);
43 return;
44}
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf.c
new file mode 100644
index 000000000000..dc8b598bedbb
--- /dev/null
+++ b/arch/sparc/prom/printf.c
@@ -0,0 +1,46 @@
1/*
2 * printf.c: Internal prom library printf facility.
3 *
4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (c) 2002 Pete Zaitcev (zaitcev@yahoo.com)
6 *
7 * We used to warn all over the code: DO NOT USE prom_printf(),
8 * and yet people do. Anton's banking code was outputing banks
9 * with prom_printf for most of the 2.4 lifetime. Since an effective
10 * stick is not available, we deployed a carrot: an early printk
11 * through PROM by means of -p boot option. This ought to fix it.
12 * USE printk; if you need, deploy -p.
13 */
14
15#include <linux/kernel.h>
16
17#include <asm/openprom.h>
18#include <asm/oplib.h>
19
20static char ppbuf[1024];
21
22void
23prom_write(const char *buf, unsigned int n)
24{
25 char ch;
26
27 while (n != 0) {
28 --n;
29 if ((ch = *buf++) == '\n')
30 prom_putchar('\r');
31 prom_putchar(ch);
32 }
33}
34
35void
36prom_printf(char *fmt, ...)
37{
38 va_list args;
39 int i;
40
41 va_start(args, fmt);
42 i = vscnprintf(ppbuf, sizeof(ppbuf), fmt, args);
43 va_end(args);
44
45 prom_write(ppbuf, i);
46}
diff --git a/arch/sparc/prom/ranges.c b/arch/sparc/prom/ranges.c
new file mode 100644
index 000000000000..a2920323c900
--- /dev/null
+++ b/arch/sparc/prom/ranges.c
@@ -0,0 +1,118 @@
1/* $Id: ranges.c,v 1.15 2001/12/19 00:29:51 davem Exp $
2 * ranges.c: Handle ranges in newer proms for obio/sbus.
3 *
4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 */
7
8#include <linux/init.h>
9#include <asm/openprom.h>
10#include <asm/oplib.h>
11#include <asm/types.h>
12#include <asm/sbus.h>
13#include <asm/system.h>
14
15struct linux_prom_ranges promlib_obio_ranges[PROMREG_MAX];
16int num_obio_ranges;
17
18/* Adjust register values based upon the ranges parameters. */
19static void
20prom_adjust_regs(struct linux_prom_registers *regp, int nregs,
21 struct linux_prom_ranges *rangep, int nranges)
22{
23 int regc, rngc;
24
25 for (regc = 0; regc < nregs; regc++) {
26 for (rngc = 0; rngc < nranges; rngc++)
27 if (regp[regc].which_io == rangep[rngc].ot_child_space)
28 break; /* Fount it */
29 if (rngc == nranges) /* oops */
30 prom_printf("adjust_regs: Could not find range with matching bus type...\n");
31 regp[regc].which_io = rangep[rngc].ot_parent_space;
32 regp[regc].phys_addr -= rangep[rngc].ot_child_base;
33 regp[regc].phys_addr += rangep[rngc].ot_parent_base;
34 }
35}
36
37void
38prom_adjust_ranges(struct linux_prom_ranges *ranges1, int nranges1,
39 struct linux_prom_ranges *ranges2, int nranges2)
40{
41 int rng1c, rng2c;
42
43 for(rng1c=0; rng1c < nranges1; rng1c++) {
44 for(rng2c=0; rng2c < nranges2; rng2c++)
45 if(ranges1[rng1c].ot_parent_space == ranges2[rng2c].ot_child_space &&
46 ranges1[rng1c].ot_parent_base >= ranges2[rng2c].ot_child_base &&
47 ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base > 0U)
48 break;
49 if(rng2c == nranges2) /* oops */
50 prom_printf("adjust_ranges: Could not find matching bus type...\n");
51 else if (ranges1[rng1c].ot_parent_base + ranges1[rng1c].or_size > ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size)
52 ranges1[rng1c].or_size =
53 ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base;
54 ranges1[rng1c].ot_parent_space = ranges2[rng2c].ot_parent_space;
55 ranges1[rng1c].ot_parent_base += ranges2[rng2c].ot_parent_base;
56 }
57}
58
59/* Apply probed obio ranges to registers passed, if no ranges return. */
60void
61prom_apply_obio_ranges(struct linux_prom_registers *regs, int nregs)
62{
63 if(num_obio_ranges)
64 prom_adjust_regs(regs, nregs, promlib_obio_ranges, num_obio_ranges);
65}
66
67void __init prom_ranges_init(void)
68{
69 int node, obio_node;
70 int success;
71
72 num_obio_ranges = 0;
73
74 /* Check for obio and sbus ranges. */
75 node = prom_getchild(prom_root_node);
76 obio_node = prom_searchsiblings(node, "obio");
77
78 if(obio_node) {
79 success = prom_getproperty(obio_node, "ranges",
80 (char *) promlib_obio_ranges,
81 sizeof(promlib_obio_ranges));
82 if(success != -1)
83 num_obio_ranges = (success/sizeof(struct linux_prom_ranges));
84 }
85
86 if(num_obio_ranges)
87 prom_printf("PROMLIB: obio_ranges %d\n", num_obio_ranges);
88
89 return;
90}
91
92void
93prom_apply_generic_ranges (int node, int parent, struct linux_prom_registers *regs, int nregs)
94{
95 int success;
96 int num_ranges;
97 struct linux_prom_ranges ranges[PROMREG_MAX];
98
99 success = prom_getproperty(node, "ranges",
100 (char *) ranges,
101 sizeof (ranges));
102 if (success != -1) {
103 num_ranges = (success/sizeof(struct linux_prom_ranges));
104 if (parent) {
105 struct linux_prom_ranges parent_ranges[PROMREG_MAX];
106 int num_parent_ranges;
107
108 success = prom_getproperty(parent, "ranges",
109 (char *) parent_ranges,
110 sizeof (parent_ranges));
111 if (success != -1) {
112 num_parent_ranges = (success/sizeof(struct linux_prom_ranges));
113 prom_adjust_ranges (ranges, num_ranges, parent_ranges, num_parent_ranges);
114 }
115 }
116 prom_adjust_regs(regs, nregs, ranges, num_ranges);
117 }
118}
diff --git a/arch/sparc/prom/segment.c b/arch/sparc/prom/segment.c
new file mode 100644
index 000000000000..09d6460165ab
--- /dev/null
+++ b/arch/sparc/prom/segment.c
@@ -0,0 +1,29 @@
1/* $Id: segment.c,v 1.7 2000/08/26 02:38:03 anton Exp $
2 * segment.c: Prom routine to map segments in other contexts before
3 * a standalone is completely mapped. This is for sun4 and
4 * sun4c architectures only.
5 *
6 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
7 */
8
9#include <linux/types.h>
10#include <linux/kernel.h>
11#include <linux/sched.h>
12#include <asm/openprom.h>
13#include <asm/oplib.h>
14
15extern void restore_current(void);
16
17/* Set physical segment 'segment' at virtual address 'vaddr' in
18 * context 'ctx'.
19 */
20void
21prom_putsegment(int ctx, unsigned long vaddr, int segment)
22{
23 unsigned long flags;
24 spin_lock_irqsave(&prom_lock, flags);
25 (*(romvec->pv_setctxt))(ctx, (char *) vaddr, segment);
26 restore_current();
27 spin_unlock_irqrestore(&prom_lock, flags);
28 return;
29}
diff --git a/arch/sparc/prom/sun4prom.c b/arch/sparc/prom/sun4prom.c
new file mode 100644
index 000000000000..69ca735f0d4e
--- /dev/null
+++ b/arch/sparc/prom/sun4prom.c
@@ -0,0 +1,161 @@
1/*
2 * Copyright (C) 1996 The Australian National University.
3 * Copyright (C) 1996 Fujitsu Laboratories Limited
4 * Copyright (C) 1997 Michael A. Griffith (grif@acm.org)
5 * Copyright (C) 1997 Sun Weenie (ko@ko.reno.nv.us)
6 * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
7 *
8 * This software may be distributed under the terms of the Gnu
9 * Public License version 2 or later
10 *
11 * fake a really simple Sun prom for the SUN4
12 */
13
14#include <linux/kernel.h>
15#include <linux/string.h>
16#include <asm/oplib.h>
17#include <asm/idprom.h>
18#include <asm/machines.h>
19#include <asm/sun4prom.h>
20#include <asm/asi.h>
21#include <asm/contregs.h>
22#include <linux/init.h>
23
24static struct linux_romvec sun4romvec;
25static struct idprom sun4_idprom;
26
27struct property {
28 char *name;
29 char *value;
30 int length;
31};
32
33struct node {
34 int level;
35 struct property *properties;
36};
37
38struct property null_properties = { NULL, NULL, -1 };
39
40struct property root_properties[] = {
41 {"device_type", "cpu", 4},
42 {"idprom", (char *)&sun4_idprom, sizeof(struct idprom)},
43 {NULL, NULL, -1}
44};
45
46struct node nodes[] = {
47 { 0, &null_properties },
48 { 0, root_properties },
49 { -1,&null_properties }
50};
51
52
53static int no_nextnode(int node)
54{
55 if (nodes[node].level == nodes[node+1].level)
56 return node+1;
57 return -1;
58}
59
60static int no_child(int node)
61{
62 if (nodes[node].level == nodes[node+1].level-1)
63 return node+1;
64 return -1;
65}
66
67static struct property *find_property(int node,char *name)
68{
69 struct property *prop = &nodes[node].properties[0];
70 while (prop && prop->name) {
71 if (strcmp(prop->name,name) == 0) return prop;
72 prop++;
73 }
74 return NULL;
75}
76
77static int no_proplen(int node,char *name)
78{
79 struct property *prop = find_property(node,name);
80 if (prop) return prop->length;
81 return -1;
82}
83
84static int no_getprop(int node,char *name,char *value)
85{
86 struct property *prop = find_property(node,name);
87 if (prop) {
88 memcpy(value,prop->value,prop->length);
89 return 1;
90 }
91 return -1;
92}
93
94static int no_setprop(int node,char *name,char *value,int len)
95{
96 return -1;
97}
98
99static char *no_nextprop(int node,char *name)
100{
101 struct property *prop = find_property(node,name);
102 if (prop) return prop[1].name;
103 return NULL;
104}
105
106static struct linux_nodeops sun4_nodeops = {
107 no_nextnode,
108 no_child,
109 no_proplen,
110 no_getprop,
111 no_setprop,
112 no_nextprop
113};
114
115static int synch_hook;
116
117struct linux_romvec * __init sun4_prom_init(void)
118{
119 int i;
120 unsigned char x;
121 char *p;
122
123 p = (char *)&sun4_idprom;
124 for (i = 0; i < sizeof(sun4_idprom); i++) {
125 __asm__ __volatile__ ("lduba [%1] %2, %0" : "=r" (x) :
126 "r" (AC_IDPROM + i), "i" (ASI_CONTROL));
127 *p++ = x;
128 }
129
130 memset(&sun4romvec,0,sizeof(sun4romvec));
131
132 sun4_romvec = (linux_sun4_romvec *) SUN4_PROM_VECTOR;
133
134 sun4romvec.pv_romvers = 40;
135 sun4romvec.pv_nodeops = &sun4_nodeops;
136 sun4romvec.pv_reboot = sun4_romvec->reboot;
137 sun4romvec.pv_abort = sun4_romvec->abortentry;
138 sun4romvec.pv_halt = sun4_romvec->exittomon;
139 sun4romvec.pv_synchook = (void (**)(void))&synch_hook;
140 sun4romvec.pv_setctxt = sun4_romvec->setcxsegmap;
141 sun4romvec.pv_v0bootargs = sun4_romvec->bootParam;
142 sun4romvec.pv_nbgetchar = sun4_romvec->mayget;
143 sun4romvec.pv_nbputchar = sun4_romvec->mayput;
144 sun4romvec.pv_stdin = sun4_romvec->insource;
145 sun4romvec.pv_stdout = sun4_romvec->outsink;
146
147 /*
148 * We turn on the LEDs to let folks without monitors or
149 * terminals know we booted. Nothing too fancy now. They
150 * are all on, except for LED 5, which blinks. When we
151 * have more time, we can teach the penguin to say "By your
152 * command" or "Activating turbo boost, Michael". :-)
153 */
154 sun4_romvec->setLEDs(0x0);
155
156 printk("PROMLIB: Old Sun4 boot PROM monitor %s, romvec version %d\n",
157 sun4_romvec->monid,
158 sun4_romvec->romvecversion);
159
160 return &sun4romvec;
161}
diff --git a/arch/sparc/prom/tree.c b/arch/sparc/prom/tree.c
new file mode 100644
index 000000000000..2bf03ee8cde5
--- /dev/null
+++ b/arch/sparc/prom/tree.c
@@ -0,0 +1,364 @@
1/* $Id: tree.c,v 1.26 2000/08/26 02:38:03 anton Exp $
2 * tree.c: Basic device tree traversal/scanning for the Linux
3 * prom library.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 */
7
8#define PROMLIB_INTERNAL
9
10#include <linux/string.h>
11#include <linux/types.h>
12#include <linux/kernel.h>
13#include <linux/sched.h>
14#include <linux/ctype.h>
15
16#include <asm/openprom.h>
17#include <asm/oplib.h>
18
19extern void restore_current(void);
20
21static char promlib_buf[128];
22
23/* Internal version of prom_getchild that does not alter return values. */
24int __prom_getchild(int node)
25{
26 unsigned long flags;
27 int cnode;
28
29 spin_lock_irqsave(&prom_lock, flags);
30 cnode = prom_nodeops->no_child(node);
31 restore_current();
32 spin_unlock_irqrestore(&prom_lock, flags);
33
34 return cnode;
35}
36
37/* Return the child of node 'node' or zero if no this node has no
38 * direct descendent.
39 */
40int prom_getchild(int node)
41{
42 int cnode;
43
44 if (node == -1)
45 return 0;
46
47 cnode = __prom_getchild(node);
48 if (cnode == 0 || cnode == -1)
49 return 0;
50
51 return cnode;
52}
53
54/* Internal version of prom_getsibling that does not alter return values. */
55int __prom_getsibling(int node)
56{
57 unsigned long flags;
58 int cnode;
59
60 spin_lock_irqsave(&prom_lock, flags);
61 cnode = prom_nodeops->no_nextnode(node);
62 restore_current();
63 spin_unlock_irqrestore(&prom_lock, flags);
64
65 return cnode;
66}
67
68/* Return the next sibling of node 'node' or zero if no more siblings
69 * at this level of depth in the tree.
70 */
71int prom_getsibling(int node)
72{
73 int sibnode;
74
75 if (node == -1)
76 return 0;
77
78 sibnode = __prom_getsibling(node);
79 if (sibnode == 0 || sibnode == -1)
80 return 0;
81
82 return sibnode;
83}
84
85/* Return the length in bytes of property 'prop' at node 'node'.
86 * Return -1 on error.
87 */
88int prom_getproplen(int node, char *prop)
89{
90 int ret;
91 unsigned long flags;
92
93 if((!node) || (!prop))
94 return -1;
95
96 spin_lock_irqsave(&prom_lock, flags);
97 ret = prom_nodeops->no_proplen(node, prop);
98 restore_current();
99 spin_unlock_irqrestore(&prom_lock, flags);
100 return ret;
101}
102
103/* Acquire a property 'prop' at node 'node' and place it in
104 * 'buffer' which has a size of 'bufsize'. If the acquisition
105 * was successful the length will be returned, else -1 is returned.
106 */
107int prom_getproperty(int node, char *prop, char *buffer, int bufsize)
108{
109 int plen, ret;
110 unsigned long flags;
111
112 plen = prom_getproplen(node, prop);
113 if((plen > bufsize) || (plen == 0) || (plen == -1))
114 return -1;
115 /* Ok, things seem all right. */
116 spin_lock_irqsave(&prom_lock, flags);
117 ret = prom_nodeops->no_getprop(node, prop, buffer);
118 restore_current();
119 spin_unlock_irqrestore(&prom_lock, flags);
120 return ret;
121}
122
123/* Acquire an integer property and return its value. Returns -1
124 * on failure.
125 */
126int prom_getint(int node, char *prop)
127{
128 static int intprop;
129
130 if(prom_getproperty(node, prop, (char *) &intprop, sizeof(int)) != -1)
131 return intprop;
132
133 return -1;
134}
135
136/* Acquire an integer property, upon error return the passed default
137 * integer.
138 */
139int prom_getintdefault(int node, char *property, int deflt)
140{
141 int retval;
142
143 retval = prom_getint(node, property);
144 if(retval == -1) return deflt;
145
146 return retval;
147}
148
149/* Acquire a boolean property, 1=TRUE 0=FALSE. */
150int prom_getbool(int node, char *prop)
151{
152 int retval;
153
154 retval = prom_getproplen(node, prop);
155 if(retval == -1) return 0;
156 return 1;
157}
158
159/* Acquire a property whose value is a string, returns a null
160 * string on error. The char pointer is the user supplied string
161 * buffer.
162 */
163void prom_getstring(int node, char *prop, char *user_buf, int ubuf_size)
164{
165 int len;
166
167 len = prom_getproperty(node, prop, user_buf, ubuf_size);
168 if(len != -1) return;
169 user_buf[0] = 0;
170 return;
171}
172
173
174/* Does the device at node 'node' have name 'name'?
175 * YES = 1 NO = 0
176 */
177int prom_nodematch(int node, char *name)
178{
179 int error;
180
181 static char namebuf[128];
182 error = prom_getproperty(node, "name", namebuf, sizeof(namebuf));
183 if (error == -1) return 0;
184 if(strcmp(namebuf, name) == 0) return 1;
185 return 0;
186}
187
188/* Search siblings at 'node_start' for a node with name
189 * 'nodename'. Return node if successful, zero if not.
190 */
191int prom_searchsiblings(int node_start, char *nodename)
192{
193
194 int thisnode, error;
195
196 for(thisnode = node_start; thisnode;
197 thisnode=prom_getsibling(thisnode)) {
198 error = prom_getproperty(thisnode, "name", promlib_buf,
199 sizeof(promlib_buf));
200 /* Should this ever happen? */
201 if(error == -1) continue;
202 if(strcmp(nodename, promlib_buf)==0) return thisnode;
203 }
204
205 return 0;
206}
207
208/* Gets name in the form prom v2+ uses it (name@x,yyyyy or name (if no reg)) */
209int prom_getname (int node, char *buffer, int len)
210{
211 int i;
212 struct linux_prom_registers reg[PROMREG_MAX];
213
214 i = prom_getproperty (node, "name", buffer, len);
215 if (i <= 0) return -1;
216 buffer [i] = 0;
217 len -= i;
218 i = prom_getproperty (node, "reg", (char *)reg, sizeof (reg));
219 if (i <= 0) return 0;
220 if (len < 11) return -1;
221 buffer = strchr (buffer, 0);
222 sprintf (buffer, "@%x,%x", reg[0].which_io, (uint)reg[0].phys_addr);
223 return 0;
224}
225
226/* Interal version of nextprop that does not alter return values. */
227char * __prom_nextprop(int node, char * oprop)
228{
229 unsigned long flags;
230 char *prop;
231
232 spin_lock_irqsave(&prom_lock, flags);
233 prop = prom_nodeops->no_nextprop(node, oprop);
234 restore_current();
235 spin_unlock_irqrestore(&prom_lock, flags);
236
237 return prop;
238}
239
240/* Return the first property name for node 'node'. */
241/* buffer is unused argument, but as v9 uses it, we need to have the same interface */
242char * prom_firstprop(int node, char *bufer)
243{
244 if (node == 0 || node == -1)
245 return "";
246
247 return __prom_nextprop(node, "");
248}
249
250/* Return the property type string after property type 'oprop'
251 * at node 'node' . Returns empty string if no more
252 * property types for this node.
253 */
254char * prom_nextprop(int node, char *oprop, char *buffer)
255{
256 if (node == 0 || node == -1)
257 return "";
258
259 return __prom_nextprop(node, oprop);
260}
261
262int prom_finddevice(char *name)
263{
264 char nbuf[128];
265 char *s = name, *d;
266 int node = prom_root_node, node2;
267 unsigned int which_io, phys_addr;
268 struct linux_prom_registers reg[PROMREG_MAX];
269
270 while (*s++) {
271 if (!*s) return node; /* path '.../' is legal */
272 node = prom_getchild(node);
273
274 for (d = nbuf; *s != 0 && *s != '@' && *s != '/';)
275 *d++ = *s++;
276 *d = 0;
277
278 node = prom_searchsiblings(node, nbuf);
279 if (!node)
280 return 0;
281
282 if (*s == '@') {
283 if (isxdigit(s[1]) && s[2] == ',') {
284 which_io = simple_strtoul(s+1, NULL, 16);
285 phys_addr = simple_strtoul(s+3, &d, 16);
286 if (d != s + 3 && (!*d || *d == '/')
287 && d <= s + 3 + 8) {
288 node2 = node;
289 while (node2 && node2 != -1) {
290 if (prom_getproperty (node2, "reg", (char *)reg, sizeof (reg)) > 0) {
291 if (which_io == reg[0].which_io && phys_addr == reg[0].phys_addr) {
292 node = node2;
293 break;
294 }
295 }
296 node2 = prom_getsibling(node2);
297 if (!node2 || node2 == -1)
298 break;
299 node2 = prom_searchsiblings(prom_getsibling(node2), nbuf);
300 }
301 }
302 }
303 while (*s != 0 && *s != '/') s++;
304 }
305 }
306 return node;
307}
308
309int prom_node_has_property(int node, char *prop)
310{
311 char *current_property = "";
312
313 do {
314 current_property = prom_nextprop(node, current_property, NULL);
315 if(!strcmp(current_property, prop))
316 return 1;
317 } while (*current_property);
318 return 0;
319}
320
321/* Set property 'pname' at node 'node' to value 'value' which has a length
322 * of 'size' bytes. Return the number of bytes the prom accepted.
323 */
324int prom_setprop(int node, char *pname, char *value, int size)
325{
326 unsigned long flags;
327 int ret;
328
329 if(size == 0) return 0;
330 if((pname == 0) || (value == 0)) return 0;
331 spin_lock_irqsave(&prom_lock, flags);
332 ret = prom_nodeops->no_setprop(node, pname, value, size);
333 restore_current();
334 spin_unlock_irqrestore(&prom_lock, flags);
335 return ret;
336}
337
338int prom_inst2pkg(int inst)
339{
340 int node;
341 unsigned long flags;
342
343 spin_lock_irqsave(&prom_lock, flags);
344 node = (*romvec->pv_v2devops.v2_inst2pkg)(inst);
345 restore_current();
346 spin_unlock_irqrestore(&prom_lock, flags);
347 if (node == -1) return 0;
348 return node;
349}
350
351/* Return 'node' assigned to a particular prom 'path'
352 * FIXME: Should work for v0 as well
353 */
354int prom_pathtoinode(char *path)
355{
356 int node, inst;
357
358 inst = prom_devopen (path);
359 if (inst == -1) return 0;
360 node = prom_inst2pkg (inst);
361 prom_devclose (inst);
362 if (node == -1) return 0;
363 return node;
364}
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-21 08:50:21 -0400