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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
f30828a6 | 2 | /* |
1da177e4 LT |
3 | * idprom.c: Routines to load the idprom into kernel addresses and |
4 | * interpret the data contained within. | |
5 | * | |
6 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) | |
7 | * Sun3/3x models added by David Monro (davidm@psrg.cs.usyd.edu.au) | |
8 | */ | |
9 | ||
2e811488 | 10 | #include <linux/module.h> |
1da177e4 LT |
11 | #include <linux/kernel.h> |
12 | #include <linux/types.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/string.h> | |
15 | ||
16 | #include <asm/oplib.h> | |
17 | #include <asm/idprom.h> | |
18 | #include <asm/machines.h> /* Fun with Sun released architectures. */ | |
19 | ||
20 | struct idprom *idprom; | |
2e811488 AV |
21 | EXPORT_SYMBOL(idprom); |
22 | ||
1da177e4 LT |
23 | static struct idprom idprom_buffer; |
24 | ||
25 | /* Here is the master table of Sun machines which use some implementation | |
26 | * of the Sparc CPU and have a meaningful IDPROM machtype value that we | |
27 | * know about. See asm-sparc/machines.h for empirical constants. | |
28 | */ | |
07b81259 | 29 | static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = { |
1da177e4 LT |
30 | /* First, Sun3's */ |
31 | { .name = "Sun 3/160 Series", .id_machtype = (SM_SUN3 | SM_3_160) }, | |
32 | { .name = "Sun 3/50", .id_machtype = (SM_SUN3 | SM_3_50) }, | |
33 | { .name = "Sun 3/260 Series", .id_machtype = (SM_SUN3 | SM_3_260) }, | |
34 | { .name = "Sun 3/110 Series", .id_machtype = (SM_SUN3 | SM_3_110) }, | |
35 | { .name = "Sun 3/60", .id_machtype = (SM_SUN3 | SM_3_60) }, | |
36 | { .name = "Sun 3/E", .id_machtype = (SM_SUN3 | SM_3_E) }, | |
37 | /* Now, Sun3x's */ | |
38 | { .name = "Sun 3/460 Series", .id_machtype = (SM_SUN3X | SM_3_460) }, | |
39 | { .name = "Sun 3/80", .id_machtype = (SM_SUN3X | SM_3_80) }, | |
40 | /* Then, Sun4's */ | |
41 | // { .name = "Sun 4/100 Series", .id_machtype = (SM_SUN4 | SM_4_110) }, | |
42 | // { .name = "Sun 4/200 Series", .id_machtype = (SM_SUN4 | SM_4_260) }, | |
43 | // { .name = "Sun 4/300 Series", .id_machtype = (SM_SUN4 | SM_4_330) }, | |
44 | // { .name = "Sun 4/400 Series", .id_machtype = (SM_SUN4 | SM_4_470) }, | |
45 | /* And now, Sun4c's */ | |
46 | // { .name = "Sun4c SparcStation 1", .id_machtype = (SM_SUN4C | SM_4C_SS1) }, | |
47 | // { .name = "Sun4c SparcStation IPC", .id_machtype = (SM_SUN4C | SM_4C_IPC) }, | |
48 | // { .name = "Sun4c SparcStation 1+", .id_machtype = (SM_SUN4C | SM_4C_SS1PLUS) }, | |
49 | // { .name = "Sun4c SparcStation SLC", .id_machtype = (SM_SUN4C | SM_4C_SLC) }, | |
50 | // { .name = "Sun4c SparcStation 2", .id_machtype = (SM_SUN4C | SM_4C_SS2) }, | |
51 | // { .name = "Sun4c SparcStation ELC", .id_machtype = (SM_SUN4C | SM_4C_ELC) }, | |
52 | // { .name = "Sun4c SparcStation IPX", .id_machtype = (SM_SUN4C | SM_4C_IPX) }, | |
53 | /* Finally, early Sun4m's */ | |
54 | // { .name = "Sun4m SparcSystem600", .id_machtype = (SM_SUN4M | SM_4M_SS60) }, | |
55 | // { .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) }, | |
56 | // { .name = "Sun4m SparcStation5", .id_machtype = (SM_SUN4M | SM_4M_SS40) }, | |
57 | /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */ | |
58 | // { .name = "Sun4M OBP based system", .id_machtype = (SM_SUN4M_OBP | 0x0) } | |
59 | }; | |
60 | ||
61 | static void __init display_system_type(unsigned char machtype) | |
62 | { | |
63 | register int i; | |
64 | ||
65 | for (i = 0; i < NUM_SUN_MACHINES; i++) { | |
66 | if(Sun_Machines[i].id_machtype == machtype) { | |
67 | if (machtype != (SM_SUN4M_OBP | 0x00)) | |
56bbd862 | 68 | pr_info("TYPE: %s\n", Sun_Machines[i].name); |
1da177e4 LT |
69 | else { |
70 | #if 0 | |
56bbd862 GU |
71 | char sysname[128]; |
72 | ||
1da177e4 LT |
73 | prom_getproperty(prom_root_node, "banner-name", |
74 | sysname, sizeof(sysname)); | |
56bbd862 | 75 | pr_info("TYPE: %s\n", sysname); |
1da177e4 LT |
76 | #endif |
77 | } | |
78 | return; | |
79 | } | |
80 | } | |
81 | ||
82 | prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", machtype); | |
83 | prom_halt(); | |
84 | } | |
85 | ||
86 | void sun3_get_model(unsigned char* model) | |
87 | { | |
88 | register int i; | |
89 | ||
90 | for (i = 0; i < NUM_SUN_MACHINES; i++) { | |
91 | if(Sun_Machines[i].id_machtype == idprom->id_machtype) { | |
92 | strcpy(model, Sun_Machines[i].name); | |
93 | return; | |
94 | } | |
95 | } | |
96 | } | |
97 | ||
98 | ||
99 | ||
100 | /* Calculate the IDPROM checksum (xor of the data bytes). */ | |
101 | static unsigned char __init calc_idprom_cksum(struct idprom *idprom) | |
102 | { | |
103 | unsigned char cksum, i, *ptr = (unsigned char *)idprom; | |
104 | ||
105 | for (i = cksum = 0; i <= 0x0E; i++) | |
106 | cksum ^= *ptr++; | |
107 | ||
108 | return cksum; | |
109 | } | |
110 | ||
111 | /* Create a local IDPROM copy, verify integrity, and display information. */ | |
112 | void __init idprom_init(void) | |
113 | { | |
114 | prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer)); | |
115 | ||
116 | idprom = &idprom_buffer; | |
117 | ||
118 | if (idprom->id_format != 0x01) { | |
119 | prom_printf("IDPROM: Unknown format type!\n"); | |
120 | prom_halt(); | |
121 | } | |
122 | ||
123 | if (idprom->id_cksum != calc_idprom_cksum(idprom)) { | |
124 | prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!\n", | |
125 | idprom->id_cksum, calc_idprom_cksum(idprom)); | |
126 | prom_halt(); | |
127 | } | |
128 | ||
129 | display_system_type(idprom->id_machtype); | |
130 | ||
56bbd862 | 131 | pr_info("Ethernet address: %pM\n", idprom->id_ethaddr); |
1da177e4 | 132 | } |