1 /* $Id: idprom.c,v 1.22 1996/11/13 05:09:25 davem Exp $ 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/kernel.h> 10 #include <linux/types.h> 11 #include <linux/init.h> 12 #include <linux/string.h> 13 14 #include <asm/oplib.h> 15 #include <asm/idprom.h> 16 #include <asm/machines.h> /* Fun with Sun released architectures. */ 17 18 struct idprom *idprom; 19 static struct idprom idprom_buffer; 20 21 /* Here is the master table of Sun machines which use some implementation 22 * of the Sparc CPU and have a meaningful IDPROM machtype value that we 23 * know about. See asm-sparc/machines.h for empirical constants. 24 */ 25 struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = { 26 /* First, Sun3's */ 27 { .name = "Sun 3/160 Series", .id_machtype = (SM_SUN3 | SM_3_160) }, 28 { .name = "Sun 3/50", .id_machtype = (SM_SUN3 | SM_3_50) }, 29 { .name = "Sun 3/260 Series", .id_machtype = (SM_SUN3 | SM_3_260) }, 30 { .name = "Sun 3/110 Series", .id_machtype = (SM_SUN3 | SM_3_110) }, 31 { .name = "Sun 3/60", .id_machtype = (SM_SUN3 | SM_3_60) }, 32 { .name = "Sun 3/E", .id_machtype = (SM_SUN3 | SM_3_E) }, 33 /* Now, Sun3x's */ 34 { .name = "Sun 3/460 Series", .id_machtype = (SM_SUN3X | SM_3_460) }, 35 { .name = "Sun 3/80", .id_machtype = (SM_SUN3X | SM_3_80) }, 36 /* Then, Sun4's */ 37 // { .name = "Sun 4/100 Series", .id_machtype = (SM_SUN4 | SM_4_110) }, 38 // { .name = "Sun 4/200 Series", .id_machtype = (SM_SUN4 | SM_4_260) }, 39 // { .name = "Sun 4/300 Series", .id_machtype = (SM_SUN4 | SM_4_330) }, 40 // { .name = "Sun 4/400 Series", .id_machtype = (SM_SUN4 | SM_4_470) }, 41 /* And now, Sun4c's */ 42 // { .name = "Sun4c SparcStation 1", .id_machtype = (SM_SUN4C | SM_4C_SS1) }, 43 // { .name = "Sun4c SparcStation IPC", .id_machtype = (SM_SUN4C | SM_4C_IPC) }, 44 // { .name = "Sun4c SparcStation 1+", .id_machtype = (SM_SUN4C | SM_4C_SS1PLUS) }, 45 // { .name = "Sun4c SparcStation SLC", .id_machtype = (SM_SUN4C | SM_4C_SLC) }, 46 // { .name = "Sun4c SparcStation 2", .id_machtype = (SM_SUN4C | SM_4C_SS2) }, 47 // { .name = "Sun4c SparcStation ELC", .id_machtype = (SM_SUN4C | SM_4C_ELC) }, 48 // { .name = "Sun4c SparcStation IPX", .id_machtype = (SM_SUN4C | SM_4C_IPX) }, 49 /* Finally, early Sun4m's */ 50 // { .name = "Sun4m SparcSystem600", .id_machtype = (SM_SUN4M | SM_4M_SS60) }, 51 // { .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) }, 52 // { .name = "Sun4m SparcStation5", .id_machtype = (SM_SUN4M | SM_4M_SS40) }, 53 /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */ 54 // { .name = "Sun4M OBP based system", .id_machtype = (SM_SUN4M_OBP | 0x0) } 55 }; 56 57 static void __init display_system_type(unsigned char machtype) 58 { 59 register int i; 60 61 for (i = 0; i < NUM_SUN_MACHINES; i++) { 62 if(Sun_Machines[i].id_machtype == machtype) { 63 if (machtype != (SM_SUN4M_OBP | 0x00)) 64 printk("TYPE: %s\n", Sun_Machines[i].name); 65 else { 66 #if 0 67 prom_getproperty(prom_root_node, "banner-name", 68 sysname, sizeof(sysname)); 69 printk("TYPE: %s\n", sysname); 70 #endif 71 } 72 return; 73 } 74 } 75 76 prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", machtype); 77 prom_halt(); 78 } 79 80 void sun3_get_model(unsigned char* model) 81 { 82 register int i; 83 84 for (i = 0; i < NUM_SUN_MACHINES; i++) { 85 if(Sun_Machines[i].id_machtype == idprom->id_machtype) { 86 strcpy(model, Sun_Machines[i].name); 87 return; 88 } 89 } 90 } 91 92 93 94 /* Calculate the IDPROM checksum (xor of the data bytes). */ 95 static unsigned char __init calc_idprom_cksum(struct idprom *idprom) 96 { 97 unsigned char cksum, i, *ptr = (unsigned char *)idprom; 98 99 for (i = cksum = 0; i <= 0x0E; i++) 100 cksum ^= *ptr++; 101 102 return cksum; 103 } 104 105 /* Create a local IDPROM copy, verify integrity, and display information. */ 106 void __init idprom_init(void) 107 { 108 prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer)); 109 110 idprom = &idprom_buffer; 111 112 if (idprom->id_format != 0x01) { 113 prom_printf("IDPROM: Unknown format type!\n"); 114 prom_halt(); 115 } 116 117 if (idprom->id_cksum != calc_idprom_cksum(idprom)) { 118 prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!\n", 119 idprom->id_cksum, calc_idprom_cksum(idprom)); 120 prom_halt(); 121 } 122 123 display_system_type(idprom->id_machtype); 124 125 printk("Ethernet address: %x:%x:%x:%x:%x:%x\n", 126 idprom->id_ethaddr[0], idprom->id_ethaddr[1], 127 idprom->id_ethaddr[2], idprom->id_ethaddr[3], 128 idprom->id_ethaddr[4], idprom->id_ethaddr[5]); 129 } 130