idprom.c
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- /* $Id: idprom.c,v 1.24 1999/08/31 06:54:20 davem Exp $
- * idprom.c: Routines to load the idprom into kernel addresses and
- * interpret the data contained within.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/types.h>
- #include <linux/init.h>
- #include <asm/oplib.h>
- #include <asm/idprom.h>
- #include <asm/machines.h> /* Fun with Sun released architectures. */
- #ifdef CONFIG_SUN4
- #include <asm/sun4paddr.h>
- extern void sun4setup(void);
- #endif
- struct idprom *idprom;
- static struct idprom idprom_buffer;
- /* Here is the master table of Sun machines which use some implementation
- * of the Sparc CPU and have a meaningful IDPROM machtype value that we
- * know about. See asm-sparc/machines.h for empirical constants.
- */
- struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = {
- /* First, Sun4's */
- { "Sun 4/100 Series", (SM_SUN4 | SM_4_110) },
- { "Sun 4/200 Series", (SM_SUN4 | SM_4_260) },
- { "Sun 4/300 Series", (SM_SUN4 | SM_4_330) },
- { "Sun 4/400 Series", (SM_SUN4 | SM_4_470) },
- /* Now, Sun4c's */
- { "Sun4c SparcStation 1", (SM_SUN4C | SM_4C_SS1) },
- { "Sun4c SparcStation IPC", (SM_SUN4C | SM_4C_IPC) },
- { "Sun4c SparcStation 1+", (SM_SUN4C | SM_4C_SS1PLUS) },
- { "Sun4c SparcStation SLC", (SM_SUN4C | SM_4C_SLC) },
- { "Sun4c SparcStation 2", (SM_SUN4C | SM_4C_SS2) },
- { "Sun4c SparcStation ELC", (SM_SUN4C | SM_4C_ELC) },
- { "Sun4c SparcStation IPX", (SM_SUN4C | SM_4C_IPX) },
- /* Finally, early Sun4m's */
- { "Sun4m SparcSystem600", (SM_SUN4M | SM_4M_SS60) },
- { "Sun4m SparcStation10/20", (SM_SUN4M | SM_4M_SS50) },
- { "Sun4m SparcStation5", (SM_SUN4M | SM_4M_SS40) },
- /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
- { "Sun4M OBP based system", (SM_SUN4M_OBP | 0x0) } };
- static void __init display_system_type(unsigned char machtype)
- {
- char sysname[128];
- register int i;
- for (i = 0; i < NUM_SUN_MACHINES; i++) {
- if(Sun_Machines[i].id_machtype == machtype) {
- if (machtype != (SM_SUN4M_OBP | 0x00))
- printk("TYPE: %sn", Sun_Machines[i].name);
- else {
- prom_getproperty(prom_root_node, "banner-name",
- sysname, sizeof(sysname));
- printk("TYPE: %sn", sysname);
- }
- return;
- }
- }
- prom_printf("IDPROM: Bogus id_machtype value, 0x%xn", machtype);
- prom_halt();
- }
- /* Calculate the IDPROM checksum (xor of the data bytes). */
- static unsigned char __init calc_idprom_cksum(struct idprom *idprom)
- {
- unsigned char cksum, i, *ptr = (unsigned char *)idprom;
- for (i = cksum = 0; i <= 0x0E; i++)
- cksum ^= *ptr++;
- return cksum;
- }
- /* Create a local IDPROM copy, verify integrity, and display information. */
- void __init idprom_init(void)
- {
- prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer));
- idprom = &idprom_buffer;
- if (idprom->id_format != 0x01) {
- prom_printf("IDPROM: Unknown format type!n");
- prom_halt();
- }
- if (idprom->id_cksum != calc_idprom_cksum(idprom)) {
- prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!n",
- idprom->id_cksum, calc_idprom_cksum(idprom));
- prom_halt();
- }
- display_system_type(idprom->id_machtype);
- printk("Ethernet address: %x:%x:%x:%x:%x:%xn",
- idprom->id_ethaddr[0], idprom->id_ethaddr[1],
- idprom->id_ethaddr[2], idprom->id_ethaddr[3],
- idprom->id_ethaddr[4], idprom->id_ethaddr[5]);
- #ifdef CONFIG_SUN4
- sun4setup();
- #endif
- }