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!
diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c
new file mode 100644
index 0000000..d710274
--- /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();
+}