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
index 000000000000..2e1b0f6e99d4
--- /dev/null
+++ 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
+}