WebSVN – HelenOS – Diff – /branches/dynload/boot/arch/sparc64/loader/ofwarch.c

 /*
  * Copyright (c) 2005 Martin Decky
  * Copyright (c) 2006 Jakub Jermar
  * All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
+ *
  * - Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimer.
  * - Redistributions in binary form must reproduce the above copyright
  *   notice, this list of conditions and the following disclaimer in the
  *   documentation and/or other materials provided with the distribution.
  * - The name of the author may not be used to endorse or promote products
  *   derived from this software without specific prior written permission.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 /**
  * @file
  * @brief   Architecture dependent parts of OpenFirmware interface.
  */
 #include <ofwarch.h>
 #include <ofw.h>
 #include <printf.h>
 #include <string.h>
 #include <register.h>
 #include "main.h"
 #include "asm.h"
+/* these tho variables will be set by the detect_subarchitecture function */
+extern uint8_t subarchitecture;
+extern uint16_t mid_mask;
 void write(const char *str, const int len)
+{
     int i;
     for (i = 0; i < len; i++) {
         if (str[i] == '\n')
             ofw_write("\r", 1);
         ofw_write(&str[i], 1);
+    }
+}
 int ofw_translate_failed(ofw_arg_t flag)
+{
     return flag != -1;
+}
+/**
+ * Starts all CPUs represented by following siblings of the given node,
+ * except for the current CPU.
+ *
+ * @param child     The first child of the OFW tree node whose children
+ *          represent CPUs to be woken up.
+ * @param current_mid   MID of the current CPU, the current CPU will
+ *          (of course) not be woken up.
+ * @return      Number of CPUs which have the same parent node as
-int ofw_cpu(void)
+ *          "child".
+ */
+static int wake_cpus_in_node(phandle child, uint64_t current_mid)
+{
-    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 0;
-    }
-    uint64_t current_mid;
-    asm volatile ("ldxa [%1] %2, %0\n"
-        : "=r" (current_mid)
-        : "r" (0), "i" (ASI_UPA_CONFIG));
-    current_mid >>= UPA_CONFIG_MID_SHIFT;
-    current_mid &= UPA_CONFIG_MID_MASK;
     int cpus;
+    char type_name[BUF_SIZE];
-    for (cpus = 0; node != 0 && node != -1; node = ofw_get_peer_node(node),
+    for (cpus = 0; child != 0 && child != -1;
-        cpus++) {
+        child = ofw_get_peer_node(child), cpus++) {
-        if (ofw_get_property(node, "device_type", type_name,
+        if (ofw_get_property(child, "device_type", type_name,
             sizeof(type_name)) > 0) {
             if (strcmp(type_name, "cpu") == 0) {
                 uint32_t mid;
+                /*
+                 * "upa-portid" for US, "portid" for US-III,
+                 * "cpuid" for US-IV
+                 */
+                if (ofw_get_property(
+                    child, "upa-portid",
+                    &mid, sizeof(mid)) <= 0
-                if (ofw_get_property(node, "upa-portid", &mid,
+                    && ofw_get_property(child, "portid",
+                    &mid, sizeof(mid)) <= 0
+                    && ofw_get_property(child, "cpuid",
-                    sizeof(mid)) <= 0)
+                    &mid, sizeof(mid)) <= 0)
                     continue;
                 if (current_mid != mid) {
                     /*
                      * Start secondary processor.
                      */
                     (void) ofw_call("SUNW,start-cpu", 3, 1,
-                        NULL, node, KERNEL_VIRTUAL_ADDRESS,
+                        NULL, child, KERNEL_VIRTUAL_ADDRESS,
                         bootinfo.physmem_start |
                         AP_PROCESSOR);
+                }
+            }
+        }
+    }
     return cpus;
+}
+/**
+ * Finds out the current CPU's MID and wakes up all AP processors.
+ */
+int ofw_cpu(void)
+{
+    int cpus;
+    phandle node;
+    phandle subnode;
+    phandle cpus_parent;
+    phandle cmp;
+    char name[BUF_SIZE];
+    /* get the current CPU MID */
+    uint64_t current_mid;
+    asm volatile ("ldxa [%1] %2, %0\n"
+        : "=r" (current_mid)
+        : "r" (0), "i" (ASI_ICBUS_CONFIG));
+    current_mid >>= ICBUS_CONFIG_MID_SHIFT;
+    current_mid &= mid_mask;
+    /* wake up CPUs */
+    cpus_parent = ofw_find_device("/ssm@0,0");
+    if (cpus_parent == 0 || cpus_parent == -1) {
+        cpus_parent = ofw_find_device("/");
+    }
+    node = ofw_get_child_node(cpus_parent);
+    cpus = wake_cpus_in_node(node, current_mid);
+    while (node != 0 && node != -1) {
+        if (ofw_get_property(node, "name", name,
+            sizeof(name)) > 0) {
+            if (strcmp(name, "cmp") == 0) {
+                subnode = ofw_get_child_node(node);
+                cpus += wake_cpus_in_node(subnode,
+                    current_mid);
+            }
+        }
+        node = ofw_get_peer_node(node);
+    }
+    return cpus;
+}
 /** Get physical memory starting address.
+ *
- * @param start Pointer to variable where the physical memory starting
+ * @param start     Pointer to variable where the physical memory starting
- *      address will be stored.
+ *          address will be stored.
+ *
- * @return Non-zero on succes, zero on failure.
+ * @return      Non-zero on succes, zero on failure.
  */
 int ofw_get_physmem_start(uintptr_t *start)
+{
     uint32_t memreg[4];
     if (ofw_get_property(ofw_memory, "reg", &memreg, sizeof(memreg)) <= 0)
         return 0;
     *start = (((uint64_t) memreg[0]) << 32) | memreg[1];
     return 1;
+}

Subversion Repositories HelenOS

(root)/branches/dynload/boot/arch/sparc64/loader/ofwarch.c – Rev 3153 → 3674