Linux-2.6.12-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!

1 files changed, 144 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c
new file mode 100644
index 00000000000..d710274e516
--- /dev/null
+++ b/arch/sparc64/kernel/devices.c
@@ -0,0 +1,144 @@
+/* devices.c: Initial scan of the prom device tree for important
+ *            Sparc device nodes which we need to find.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/threads.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/string.h>
+#include <linux/spinlock.h>
+#include <linux/errno.h>
+
+#include <asm/page.h>
+#include <asm/oplib.h>
+#include <asm/system.h>
+#include <asm/smp.h>
+#include <asm/spitfire.h>
+#include <asm/timer.h>
+#include <asm/cpudata.h>
+
+/* Used to synchronize acceses to NatSemi SUPER I/O chip configure
+ * operations in asm/ns87303.h
+ */
+DEFINE_SPINLOCK(ns87303_lock);
+
+extern void cpu_probe(void);
+extern void central_probe(void);
+
+static char *cpu_mid_prop(void)
+{
+        if (tlb_type == spitfire)
+                return "upa-portid";
+        return "portid";
+}
+
+static int check_cpu_node(int nd, int *cur_inst,
+                          int (*compare)(int, int, void *), void *compare_arg,
+                          int *prom_node, int *mid)
+{
+        char node_str[128];
+
+        prom_getstring(nd, "device_type", node_str, sizeof(node_str));
+        if (strcmp(node_str, "cpu"))
+                return -ENODEV;
+
+        if (!compare(nd, *cur_inst, compare_arg)) {
+                if (prom_node)
+                        *prom_node = nd;
+                if (mid)
+                        *mid = prom_getintdefault(nd, cpu_mid_prop(), 0);
+                return 0;
+        }
+
+        (*cur_inst)++;
+
+        return -ENODEV;
+}
+
+static int __cpu_find_by(int (*compare)(int, int, void *), void *compare_arg,
+                         int *prom_node, int *mid)
+{
+        int nd, cur_inst, err;
+
+        nd = prom_root_node;
+        cur_inst = 0;
+
+        err = check_cpu_node(nd, &cur_inst,
+                             compare, compare_arg,
+                             prom_node, mid);
+        if (err == 0)
+                return 0;
+
+        nd = prom_getchild(nd);
+        while ((nd = prom_getsibling(nd)) != 0) {
+                err = check_cpu_node(nd, &cur_inst,
+                                     compare, compare_arg,
+                                     prom_node, mid);
+                if (err == 0)
+                        return 0;
+        }
+
+        return -ENODEV;
+}
+
+static int cpu_instance_compare(int nd, int instance, void *_arg)
+{
+        int desired_instance = (int) (long) _arg;
+
+        if (instance == desired_instance)
+                return 0;
+        return -ENODEV;
+}
+
+int cpu_find_by_instance(int instance, int *prom_node, int *mid)
+{
+        return __cpu_find_by(cpu_instance_compare, (void *)(long)instance,
+                             prom_node, mid);
+}
+
+static int cpu_mid_compare(int nd, int instance, void *_arg)
+{
+        int desired_mid = (int) (long) _arg;
+        int this_mid;
+
+        this_mid = prom_getintdefault(nd, cpu_mid_prop(), 0);
+        if (this_mid == desired_mid)
+                return 0;
+        return -ENODEV;
+}
+
+int cpu_find_by_mid(int mid, int *prom_node)
+{
+        return __cpu_find_by(cpu_mid_compare, (void *)(long)mid,
+                             prom_node, NULL);
+}
+
+void __init device_scan(void)
+{
+        /* FIX ME FAST... -DaveM */
+        ioport_resource.end = 0xffffffffffffffffUL;
+
+        prom_printf("Booting Linux...\n");
+
+#ifndef CONFIG_SMP
+        {
+                int err, cpu_node;
+                err = cpu_find_by_instance(0, &cpu_node, NULL);
+                if (err) {
+                        prom_printf("No cpu nodes, cannot continue\n");
+                        prom_halt();
+                }
+                cpu_data(0).clock_tick = prom_getintdefault(cpu_node,
+                                                            "clock-frequency",
+                                                            0);
+        }
+#endif
+
+        central_probe();
+
+        cpu_probe();
+}