Adrian Bunk | 88278ca | 2008-05-19 16:53:02 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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. */ |
| 15 | #ifdef CONFIG_SUN4 |
| 16 | #include <asm/sun4paddr.h> |
| 17 | extern void sun4setup(void); |
| 18 | #endif |
| 19 | |
| 20 | struct idprom *idprom; |
| 21 | static struct idprom idprom_buffer; |
| 22 | |
| 23 | /* Here is the master table of Sun machines which use some implementation |
| 24 | * of the Sparc CPU and have a meaningful IDPROM machtype value that we |
| 25 | * know about. See asm-sparc/machines.h for empirical constants. |
| 26 | */ |
Adrian Bunk | c61c65c | 2008-06-05 11:40:58 -0700 | [diff] [blame] | 27 | static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | /* First, Sun4's */ |
| 29 | { "Sun 4/100 Series", (SM_SUN4 | SM_4_110) }, |
| 30 | { "Sun 4/200 Series", (SM_SUN4 | SM_4_260) }, |
| 31 | { "Sun 4/300 Series", (SM_SUN4 | SM_4_330) }, |
| 32 | { "Sun 4/400 Series", (SM_SUN4 | SM_4_470) }, |
| 33 | /* Now, Sun4c's */ |
| 34 | { "Sun4c SparcStation 1", (SM_SUN4C | SM_4C_SS1) }, |
| 35 | { "Sun4c SparcStation IPC", (SM_SUN4C | SM_4C_IPC) }, |
| 36 | { "Sun4c SparcStation 1+", (SM_SUN4C | SM_4C_SS1PLUS) }, |
| 37 | { "Sun4c SparcStation SLC", (SM_SUN4C | SM_4C_SLC) }, |
| 38 | { "Sun4c SparcStation 2", (SM_SUN4C | SM_4C_SS2) }, |
| 39 | { "Sun4c SparcStation ELC", (SM_SUN4C | SM_4C_ELC) }, |
| 40 | { "Sun4c SparcStation IPX", (SM_SUN4C | SM_4C_IPX) }, |
| 41 | /* Finally, early Sun4m's */ |
| 42 | { "Sun4m SparcSystem600", (SM_SUN4M | SM_4M_SS60) }, |
| 43 | { "Sun4m SparcStation10/20", (SM_SUN4M | SM_4M_SS50) }, |
| 44 | { "Sun4m SparcStation5", (SM_SUN4M | SM_4M_SS40) }, |
| 45 | /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */ |
| 46 | { "Sun4M OBP based system", (SM_SUN4M_OBP | 0x0) } }; |
| 47 | |
| 48 | static void __init display_system_type(unsigned char machtype) |
| 49 | { |
| 50 | char sysname[128]; |
| 51 | register int i; |
| 52 | |
| 53 | for (i = 0; i < NUM_SUN_MACHINES; i++) { |
| 54 | if(Sun_Machines[i].id_machtype == machtype) { |
| 55 | if (machtype != (SM_SUN4M_OBP | 0x00) || |
| 56 | prom_getproperty(prom_root_node, "banner-name", |
| 57 | sysname, sizeof(sysname)) <= 0) |
| 58 | printk("TYPE: %s\n", Sun_Machines[i].name); |
| 59 | else |
| 60 | printk("TYPE: %s\n", sysname); |
| 61 | return; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", machtype); |
| 66 | prom_halt(); |
| 67 | } |
| 68 | |
| 69 | /* Calculate the IDPROM checksum (xor of the data bytes). */ |
| 70 | static unsigned char __init calc_idprom_cksum(struct idprom *idprom) |
| 71 | { |
| 72 | unsigned char cksum, i, *ptr = (unsigned char *)idprom; |
| 73 | |
| 74 | for (i = cksum = 0; i <= 0x0E; i++) |
| 75 | cksum ^= *ptr++; |
| 76 | |
| 77 | return cksum; |
| 78 | } |
| 79 | |
| 80 | /* Create a local IDPROM copy, verify integrity, and display information. */ |
| 81 | void __init idprom_init(void) |
| 82 | { |
| 83 | prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer)); |
| 84 | |
| 85 | idprom = &idprom_buffer; |
| 86 | |
| 87 | if (idprom->id_format != 0x01) { |
| 88 | prom_printf("IDPROM: Unknown format type!\n"); |
| 89 | prom_halt(); |
| 90 | } |
| 91 | |
| 92 | if (idprom->id_cksum != calc_idprom_cksum(idprom)) { |
| 93 | prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!\n", |
| 94 | idprom->id_cksum, calc_idprom_cksum(idprom)); |
| 95 | prom_halt(); |
| 96 | } |
| 97 | |
| 98 | display_system_type(idprom->id_machtype); |
| 99 | |
| 100 | printk("Ethernet address: %x:%x:%x:%x:%x:%x\n", |
| 101 | idprom->id_ethaddr[0], idprom->id_ethaddr[1], |
| 102 | idprom->id_ethaddr[2], idprom->id_ethaddr[3], |
| 103 | idprom->id_ethaddr[4], idprom->id_ethaddr[5]); |
| 104 | #ifdef CONFIG_SUN4 |
| 105 | sun4setup(); |
| 106 | #endif |
| 107 | } |