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Diffstat (limited to 'arch/sparc/kernel/idprom_64.c')
-rw-r--r--arch/sparc/kernel/idprom_64.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/sparc/kernel/idprom_64.c b/arch/sparc/kernel/idprom_64.c
new file mode 100644
index 000000000000..5b45a808c621
--- /dev/null
+++ b/arch/sparc/kernel/idprom_64.c
@@ -0,0 +1,49 @@
+/*
+ * 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;
+
+/* 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 and verify integrity. */
+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));
+ }
+
+ printk("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]);
+}