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-rw-r--r--arch/sparc/kernel/idprom.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/arch/sparc/kernel/idprom.c b/arch/sparc/kernel/idprom.c
new file mode 100644
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+++ b/arch/sparc/kernel/idprom.c
@@ -0,0 +1,108 @@
+/* $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) ||
+ prom_getproperty(prom_root_node, "banner-name",
+ sysname, sizeof(sysname)) <= 0)
+ printk("TYPE: %s\n", Sun_Machines[i].name);
+ else
+ printk("TYPE: %s\n", sysname);
+ return;
+ }
+ }
+
+ prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", 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:%x\n",
+ 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
+}
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