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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc64/kernel/idprom.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/sparc64/kernel/idprom.c')
-rw-r--r--arch/sparc64/kernel/idprom.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/idprom.c b/arch/sparc64/kernel/idprom.c
new file mode 100644
index 000000000000..3b6789e09a72
--- /dev/null
+++ b/arch/sparc64/kernel/idprom.c
@@ -0,0 +1,49 @@
+/* $Id: idprom.c,v 1.3 1999/08/31 06:54:53 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/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]);
+}