1 files changed, 102 insertions, 0 deletions
diff --git a/arch/sparc/kernel/idprom.c b/arch/sparc/kernel/idprom.c
new file mode 100644
index 000000000000..1b0bd9120c1c
--- /dev/null
+++ b/arch/sparc/kernel/idprom.c
@@ -0,0 +1,102 @@
+/*
+ * 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/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+
+#include <asm/oplib.h>
+#include <asm/idprom.h>
+
+struct idprom *idprom;
+static struct idprom idprom_buffer;
+
+#ifdef CONFIG_SPARC32
+#include <asm/machines.h>  /* Fun with Sun released architectures. */
+
+/* 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.
+ */
+static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = {
+/* First, Sun4's */
+{ .name = "Sun 4/100 Series",        .id_machtype = (SM_SUN4 | SM_4_110) },
+{ .name = "Sun 4/200 Series",        .id_machtype = (SM_SUN4 | SM_4_260) },
+{ .name = "Sun 4/300 Series",        .id_machtype = (SM_SUN4 | SM_4_330) },
+{ .name = "Sun 4/400 Series",        .id_machtype = (SM_SUN4 | SM_4_470) },
+/* Now, Sun4c's */
+{ .name = "Sun4c SparcStation 1",    .id_machtype = (SM_SUN4C | SM_4C_SS1) },
+{ .name = "Sun4c SparcStation IPC",  .id_machtype = (SM_SUN4C | SM_4C_IPC) },
+{ .name = "Sun4c SparcStation 1+",   .id_machtype = (SM_SUN4C | SM_4C_SS1PLUS) },
+{ .name = "Sun4c SparcStation SLC",  .id_machtype = (SM_SUN4C | SM_4C_SLC) },
+{ .name = "Sun4c SparcStation 2",    .id_machtype = (SM_SUN4C | SM_4C_SS2) },
+{ .name = "Sun4c SparcStation ELC",  .id_machtype = (SM_SUN4C | SM_4C_ELC) },
+{ .name = "Sun4c SparcStation IPX",  .id_machtype = (SM_SUN4C | SM_4C_IPX) },
+/* Finally, early Sun4m's */
+{ .name = "Sun4m SparcSystem600",    .id_machtype = (SM_SUN4M | SM_4M_SS60) },
+{ .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) },
+{ .name = "Sun4m SparcStation5",     .id_machtype = (SM_SUN4M | SM_4M_SS40) },
+/* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
+{ .name = "Sun4M OBP based system",  .id_machtype = (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(KERN_WARNING "TYPE: %s\n",
+				       Sun_Machines[i].name);
+			else
+				printk(KERN_WARNING "TYPE: %s\n", sysname);
+			return;
+		}
+	}
+
+	prom_printf("IDPROM: Warning, bogus id_machtype value, 0x%x\n", machtype);
+}
+#else
+static void __init display_system_type(unsigned char machtype)
+{
+}
+#endif
+/* 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: Warning, unknown format type!\n");
+
+	if (idprom->id_cksum != calc_idprom_cksum(idprom))
+		prom_printf("IDPROM: Warning, checksum failure (nvram=%x, calc=%x)!\n",
+			    idprom->id_cksum, calc_idprom_cksum(idprom));
+
+	display_system_type(idprom->id_machtype);
+
+	printk(KERN_WARNING "Ethernet address: %02x:%02x:%02x:%02x:%02x:%02x\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]);
+}