1 // SPDX-License-Identifier: GPL-2.0 1
2 /*
3 * idprom.c: Routines to load the idprom into
4 * interpret the data contained with
5 *
6 * Copyright (C) 1995 David S. Miller (davem@c
7 */
8
9 #include <linux/kernel.h>
10 #include <linux/types.h>
11 #include <linux/init.h>
12 #include <linux/export.h>
13 #include <linux/etherdevice.h>
14
15 #include <asm/oplib.h>
16 #include <asm/idprom.h>
17
18 struct idprom *idprom;
19 EXPORT_SYMBOL(idprom);
20
21 static struct idprom idprom_buffer;
22
23 #ifdef CONFIG_SPARC32
24 #include <asm/machines.h> /* Fun with Sun rel
25
26 /* Here is the master table of Sun machines wh
27 * of the Sparc CPU and have a meaningful IDPR
28 * know about. See asm-sparc/machines.h for e
29 */
30 static struct Sun_Machine_Models Sun_Machines[
31 /* First, Leon */
32 { .name = "Leon3 System-on-a-Chip", .id_macht
33 /* Finally, early Sun4m's */
34 { .name = "Sun4m SparcSystem600", .id_macht
35 { .name = "Sun4m SparcStation10/20", .id_macht
36 { .name = "Sun4m SparcStation5", .id_macht
37 /* One entry for the OBP arch's which are sun4
38 { .name = "Sun4M OBP based system", .id_macht
39
40 static void __init display_system_type(unsigne
41 {
42 char sysname[128];
43 register int i;
44
45 for (i = 0; i < ARRAY_SIZE(Sun_Machine
46 if (Sun_Machines[i].id_machtyp
47 if (machtype != (SM_SU
48 prom_getproperty(p
49 s
50 printk(KERN_WA
51 Sun_Mac
52 else
53 printk(KERN_WA
54 return;
55 }
56 }
57
58 prom_printf("IDPROM: Warning, bogus id
59 }
60 #else
61 static void __init display_system_type(unsigne
62 {
63 }
64 #endif
65
66 unsigned char *arch_get_platform_mac_address(v
67 {
68 return idprom->id_ethaddr;
69 }
70
71 /* Calculate the IDPROM checksum (xor of the d
72 static unsigned char __init calc_idprom_cksum(
73 {
74 unsigned char cksum, i, *ptr = (unsign
75
76 for (i = cksum = 0; i <= 0x0E; i++)
77 cksum ^= *ptr++;
78
79 return cksum;
80 }
81
82 /* Create a local IDPROM copy, verify integrit
83 void __init idprom_init(void)
84 {
85 prom_get_idprom((char *) &idprom_buffe
86
87 idprom = &idprom_buffer;
88
89 if (idprom->id_format != 0x01)
90 prom_printf("IDPROM: Warning,
91
92 if (idprom->id_cksum != calc_idprom_ck
93 prom_printf("IDPROM: Warning,
94 idprom->id_cksum,
95
96 display_system_type(idprom->id_machtyp
97
98 printk(KERN_WARNING "Ethernet address:
99 }
100
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.