Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sparc / kernel / idprom.c

diff --git a/kernel/arch/sparc/kernel/idprom.c b/kernel/arch/sparc/kernel/idprom.c
new file mode 100644 (file)
index 0000000..6bd7501
--- /dev/null
+++ b/kernel/arch/sparc/kernel/idprom.c
@@ -0,0 +1,91 @@
+/*
+ * 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 <linux/export.h>
+
+#include <asm/oplib.h>
+#include <asm/idprom.h>
+
+struct idprom *idprom;
+EXPORT_SYMBOL(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[] = {
+/* First, Leon */
+{ .name = "Leon3 System-on-a-Chip",  .id_machtype = (M_LEON | M_LEON3_SOC) },
+/* 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 < ARRAY_SIZE(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: %pM\n", idprom->id_ethaddr);
+}