projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 88278ca2 | 1 | /* |
| 1da177e4 LT |
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 | */ | |
| 7 | ||
| 1da177e4 LT |
8 | #include <linux/kernel.h> |
| 9 | #include <linux/types.h> | |
| 10 | #include <linux/init.h> | |
| 11 | ||
| 12 | #include <asm/oplib.h> | |
| 13 | #include <asm/idprom.h> | |
| 14 | #include <asm/machines.h> /* Fun with Sun released architectures. */ | |
| 1da177e4 LT |
15 | |
| 16 | struct idprom *idprom; | |
| 17 | static struct idprom idprom_buffer; | |
| 18 | ||
| 19 | /* Here is the master table of Sun machines which use some implementation | |
| 20 | * of the Sparc CPU and have a meaningful IDPROM machtype value that we | |
| 21 | * know about. See asm-sparc/machines.h for empirical constants. | |
| 22 | */ | |
| c61c65cd | 23 | static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = { |
| 1da177e4 LT |
24 | /* First, Sun4's */ |
| 25 | { "Sun 4/100 Series", (SM_SUN4 | SM_4_110) }, | |
| 26 | { "Sun 4/200 Series", (SM_SUN4 | SM_4_260) }, | |
| 27 | { "Sun 4/300 Series", (SM_SUN4 | SM_4_330) }, | |
| 28 | { "Sun 4/400 Series", (SM_SUN4 | SM_4_470) }, | |
| 29 | /* Now, Sun4c's */ | |
| 30 | { "Sun4c SparcStation 1", (SM_SUN4C | SM_4C_SS1) }, | |
| 31 | { "Sun4c SparcStation IPC", (SM_SUN4C | SM_4C_IPC) }, | |
| 32 | { "Sun4c SparcStation 1+", (SM_SUN4C | SM_4C_SS1PLUS) }, | |
| 33 | { "Sun4c SparcStation SLC", (SM_SUN4C | SM_4C_SLC) }, | |
| 34 | { "Sun4c SparcStation 2", (SM_SUN4C | SM_4C_SS2) }, | |
| 35 | { "Sun4c SparcStation ELC", (SM_SUN4C | SM_4C_ELC) }, | |
| 36 | { "Sun4c SparcStation IPX", (SM_SUN4C | SM_4C_IPX) }, | |
| 37 | /* Finally, early Sun4m's */ | |
| 38 | { "Sun4m SparcSystem600", (SM_SUN4M | SM_4M_SS60) }, | |
| 39 | { "Sun4m SparcStation10/20", (SM_SUN4M | SM_4M_SS50) }, | |
| 40 | { "Sun4m SparcStation5", (SM_SUN4M | SM_4M_SS40) }, | |
| 41 | /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */ | |
| 42 | { "Sun4M OBP based system", (SM_SUN4M_OBP | 0x0) } }; | |
| 43 | ||
| 44 | static void __init display_system_type(unsigned char machtype) | |
| 45 | { | |
| 46 | char sysname[128]; | |
| 47 | register int i; | |
| 48 | ||
| 49 | for (i = 0; i < NUM_SUN_MACHINES; i++) { | |
| 50 | if(Sun_Machines[i].id_machtype == machtype) { | |
| 51 | if (machtype != (SM_SUN4M_OBP | 0x00) || | |
| 52 | prom_getproperty(prom_root_node, "banner-name", | |
| 53 | sysname, sizeof(sysname)) <= 0) | |
| 54 | printk("TYPE: %s\n", Sun_Machines[i].name); | |
| 55 | else | |
| 56 | printk("TYPE: %s\n", sysname); | |
| 57 | return; | |
| 58 | } | |
| 59 | } | |
| 60 | ||
| 61 | prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", machtype); | |
| 62 | prom_halt(); | |
| 63 | } | |
| 64 | ||
| 65 | /* Calculate the IDPROM checksum (xor of the data bytes). */ | |
| 66 | static unsigned char __init calc_idprom_cksum(struct idprom *idprom) | |
| 67 | { | |
| 68 | unsigned char cksum, i, *ptr = (unsigned char *)idprom; | |
| 69 | ||
| 70 | for (i = cksum = 0; i <= 0x0E; i++) | |
| 71 | cksum ^= *ptr++; | |
| 72 | ||
| 73 | return cksum; | |
| 74 | } | |
| 75 | ||
| 76 | /* Create a local IDPROM copy, verify integrity, and display information. */ | |
| 77 | void __init idprom_init(void) | |
| 78 | { | |
| 79 | prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer)); | |
| 80 | ||
| 81 | idprom = &idprom_buffer; | |
| 82 | ||
| 83 | if (idprom->id_format != 0x01) { | |
| 84 | prom_printf("IDPROM: Unknown format type!\n"); | |
| 85 | prom_halt(); | |
| 86 | } | |
| 87 | ||
| 88 | if (idprom->id_cksum != calc_idprom_cksum(idprom)) { | |
| 89 | prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!\n", | |
| 90 | idprom->id_cksum, calc_idprom_cksum(idprom)); | |
| 91 | prom_halt(); | |
| 92 | } | |
| 93 | ||
| 94 | display_system_type(idprom->id_machtype); | |
| 95 | ||
| 96 | printk("Ethernet address: %x:%x:%x:%x:%x:%x\n", | |
| 97 | idprom->id_ethaddr[0], idprom->id_ethaddr[1], | |
| 98 | idprom->id_ethaddr[2], idprom->id_ethaddr[3], | |
| 99 | idprom->id_ethaddr[4], idprom->id_ethaddr[5]); | |
| 1da177e4 | 100 | } |