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