Changeset 9a5b556 in mainline for boot/arch/sparc64/loader/ofwarch.c

Timestamp:

2006-09-12T13:03:55Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

6eabb6e6

Parents:

7bb6b06

Message:

sparc64 work:

• find a CPU node and read its clock_frequency attribute
• implement asm_delay_loop()
• set TICK_COMPARE register according to processor frequency
• small improvements at random places

OpenFirmware work:

• two new functions for walking the device tree

Generic boot loader work:

• added basic string functions

Usual pile of indentation and formatting fixes.

File:

• boot/arch/sparc64/loader/ofwarch.c (modified) (2 diffs)

boot/arch/sparc64/loader/ofwarch.c

@@ -35 +35 @@
 #include <ofw.h>
 #include <printf.h>
+#include <string.h>
+#include "main.h"
 
 int bpp2align[] = {
@@ -80 +82 @@
         return true;
 }
+
+int ofw_cpu(cpu_t *cpu)
+{
+        char type_name[BUF_SIZE];
+
+        phandle node;
+        node = ofw_get_child_node(ofw_root);
+        if (node == 0 || node == -1) {
+                printf("Could not find any child nodes of the root node.\n");
+                return;
+        }
+        
+        for (; node != 0 && node != -1; node = ofw_get_peer_node(node)) {
+                if (ofw_get_property(node, "device_type", type_name, sizeof(type_name)) > 0) {
+                        if (strncmp(type_name, "cpu", 3) == 0) {
+                                uint32_t mhz;
+                                
+                                if (ofw_get_property(node, "clock-frequency", &mhz, sizeof(mhz)) <= 0)
+                                        continue;
+                                        
+                                cpu->clock_frequency = mhz;
+                                return 1;
+                        }
+                }
+        };
+
+        return 0;
+}