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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/prom/init.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/prom/init.c')
-rw-r--r--arch/sparc64/prom/init.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/arch/sparc64/prom/init.c b/arch/sparc64/prom/init.c
new file mode 100644
index 000000000000..817faae058cd
--- /dev/null
+++ b/arch/sparc64/prom/init.c
@@ -0,0 +1,101 @@
+/* $Id: init.c,v 1.10 1999/09/21 14:35:59 davem Exp $
+ * init.c: Initialize internal variables used by the PROM
+ * library functions.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+enum prom_major_version prom_vers;
+unsigned int prom_rev, prom_prev;
+
+/* The root node of the prom device tree. */
+int prom_root_node;
+int prom_stdin, prom_stdout;
+int prom_chosen_node;
+
+/* You must call prom_init() before you attempt to use any of the
+ * routines in the prom library. It returns 0 on success, 1 on
+ * failure. It gets passed the pointer to the PROM vector.
+ */
+
+extern void prom_meminit(void);
+extern void prom_cif_init(void *, void *);
+
+void __init prom_init(void *cif_handler, void *cif_stack)
+{
+ char buffer[80], *p;
+ int ints[3];
+ int node;
+ int i = 0;
+ int bufadjust;
+
+ prom_vers = PROM_P1275;
+
+ prom_cif_init(cif_handler, cif_stack);
+
+ prom_root_node = prom_getsibling(0);
+ if((prom_root_node == 0) || (prom_root_node == -1))
+ prom_halt();
+
+ prom_chosen_node = prom_finddevice("/chosen");
+ if (!prom_chosen_node || prom_chosen_node == -1)
+ prom_halt();
+
+ prom_stdin = prom_getint (prom_chosen_node, "stdin");
+ prom_stdout = prom_getint (prom_chosen_node, "stdout");
+
+ node = prom_finddevice("/openprom");
+ if (!node || node == -1)
+ prom_halt();
+
+ prom_getstring (node, "version", buffer, sizeof (buffer));
+
+ prom_printf ("\n");
+
+ if (strncmp (buffer, "OBP ", 4))
+ goto strange_version;
+
+ /*
+ * Version field is expected to be 'OBP xx.yy.zz date...'
+ * However, Sun can't stick to this format very well, so
+ * we need to check for 'OBP xx.yy.zz date...' and adjust
+ * accordingly. -spot
+ */
+
+ if (strncmp (buffer, "OBP ", 5))
+ bufadjust = 4;
+ else
+ bufadjust = 5;
+
+ p = buffer + bufadjust;
+ while (p && isdigit(*p) && i < 3) {
+ ints[i++] = simple_strtoul(p, NULL, 0);
+ if ((p = strchr(p, '.')) != NULL)
+ p++;
+ }
+ if (i != 3)
+ goto strange_version;
+
+ prom_rev = ints[1];
+ prom_prev = (ints[0] << 16) | (ints[1] << 8) | ints[2];
+
+ printk ("PROMLIB: Sun IEEE Boot Prom %s\n", buffer + bufadjust);
+
+ prom_meminit();
+
+ /* Initialization successful. */
+ return;
+
+strange_version:
+ prom_printf ("Strange OBP version `%s'.\n", buffer);
+ prom_halt ();
+}