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 19struct idprom *idprom; 20EXPORT_SYMBOL(idprom); 21 22static 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 */ 28static 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 60static 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 printk("TYPE: %s\n", Sun_Machines[i].name); 68 else { 69 } 70 return; 71 } 72 } 73 74 prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", machtype); 75 prom_halt(); 76} 77 78void sun3_get_model(unsigned char* model) 79{ 80 register int i; 81 82 for (i = 0; i < NUM_SUN_MACHINES; i++) { 83 if(Sun_Machines[i].id_machtype == idprom->id_machtype) { 84 strcpy(model, Sun_Machines[i].name); 85 return; 86 } 87 } 88} 89 90 91 92/* Calculate the IDPROM checksum (xor of the data bytes). */ 93static unsigned char __init calc_idprom_cksum(struct idprom *idprom) 94{ 95 unsigned char cksum, i, *ptr = (unsigned char *)idprom; 96 97 for (i = cksum = 0; i <= 0x0E; i++) 98 cksum ^= *ptr++; 99 100 return cksum; 101} 102 103/* Create a local IDPROM copy, verify integrity, and display information. */ 104void __init idprom_init(void) 105{ 106 prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer)); 107 108 idprom = &idprom_buffer; 109 110 if (idprom->id_format != 0x01) { 111 prom_printf("IDPROM: Unknown format type!\n"); 112 prom_halt(); 113 } 114 115 if (idprom->id_cksum != calc_idprom_cksum(idprom)) { 116 prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!\n", 117 idprom->id_cksum, calc_idprom_cksum(idprom)); 118 prom_halt(); 119 } 120 121 display_system_type(idprom->id_machtype); 122 123 printk("Ethernet address: %x:%x:%x:%x:%x:%x\n", 124 idprom->id_ethaddr[0], idprom->id_ethaddr[1], 125 idprom->id_ethaddr[2], idprom->id_ethaddr[3], 126 idprom->id_ethaddr[4], idprom->id_ethaddr[5]); 127} 128