Changeset 23 for trunk/kernel/kern/kernel_init.c

Timestamp:

Jun 18, 2017, 10:06:41 PM (7 years ago)

Author:

alain

Message:

Introduce syscalls.

File:

• trunk/kernel/kern/kernel_init.c (modified) (12 diffs)

trunk/kernel/kern/kernel_init.c

@@ -2 +2 @@
  * kernel_init.c - kernel parallel initialization
  * 
- * Authors :  Alain Greiner  (2016)
- *            Mohamed Lamine Karaoui (2016)
+ * Authors :  Mohamed Lamine Karaoui (2015)
+ *            Alain Greiner  (2016,2017)
  *
  * Copyright (c) Sorbonne Universites
@@ -53 +53 @@
 #include <vfs.h>
 #include <soclib_tty.h>
-
-// TODO #include <devfs.h>
+#include <devfs.h>
+
 // TODO #include <sysfs.h>
 
@@ -601 +601 @@
 // @ return 0 if success / return EINVAL if not found.
 ///////////////////////////////////////////////////////////////////////////////////////////
-static error_t core_get_identifiers( boot_info_t * info,
-                                     uint32_t    * lid,
+static error_t get_core_identifiers( boot_info_t * info,
+                                     lid_t       * lid,
                                      cxy_t       * cxy,
                                      gid_t       * gid )
@@ -637 +637 @@
 void kernel_init( boot_info_t * info )
 {
-    uint32_t     core_lid = -1;      // running core local index
+    lid_t        core_lid = -1;      // running core local index
     cxy_t        core_cxy = -1;      // running core cluster identifier
     gid_t        core_gid;           // running core hardware identifier 
@@ -646 +646 @@
 
     // all cores get core identifiers
-    error = core_get_identifiers( info,
+    error = get_core_identifiers( info,
                                   &core_lid,
                                   &core_cxy,
@@ -664 +664 @@
     /////////////////////////////////////////////////////////////////////////////////
 
-    kinit_dmsg("\n[INFO] %s : core[%x][%d] exit barrier 0\n",
-               __FUNCTION__ , core_cxy , core_lid );
+    kinit_dmsg("\n[INFO] %s : core[%x][%d] exit barrier 0 at cycle %d\n",
+               __FUNCTION__ , core_cxy , core_lid , hal_time_stamp() );
 
     // all cores check core identifiers
@@ -675 +675 @@
         hal_core_sleep();
     }
-    else
-    {
-        kinit_dmsg("\n[INFO] %s : core[%x][%d] enters at cycle %d / sp = %x\n",
-                   __FUNCTION__ , core_cxy , core_lid , hal_time_stamp() , hal_get_stack() );
-    }
 
     // CP0 initializes the local cluster manager (cores and memory allocators)
@@ -691 +686 @@
                    __FUNCTION__ , local_cxy );
             hal_core_sleep();
-        }
-        else
-        {
-            kinit_dmsg("\n[INFO] %s : core[%x][%d] initialised cluster at cycle %d\n",
-                       __FUNCTION__ , core_cxy , core_lid , hal_time_stamp());
         }
     }
@@ -706 +696 @@
     /////////////////////////////////////////////////////////////////////////////////
 
-    kinit_dmsg("\n[INFO] %s : core[%x][%d] exit barrier 1\n",
-               __FUNCTION__ , core_cxy , core_lid );
+    kinit_dmsg("\n[INFO] %s : core[%x][%d] exit barrier 1 at cycle %d\n",
+               __FUNCTION__ , core_cxy , core_lid , hal_time_stamp() );
 
     // all cores get pointer on local cluster manager and on core descriptor
@@ -756 +746 @@
     /////////////////////////////////////////////////////////////////////////////////
 
-    kinit_dmsg("\n[INFO] %s : core[%x][%d] exit barrier 2\n", 
-               __FUNCTION__ , core_cxy , core_lid );
+    kinit_dmsg("\n[INFO] %s : core[%x][%d] exit barrier 2 at cycle %d\n", 
+               __FUNCTION__ , core_cxy , core_lid , hal_time_stamp() );
 
     // all cores initialize the private idle thread descriptor
@@ -789 +779 @@
     }
 
-    // TODO CP0 in IO cluster initialize VFS, devFS and sysFS
-    {
-            // devfs_root_init();
-            // sysfs_root_init();
-            // clusters_sysfs_register();
-        // vfs_init();
-            // sysconf_init();
-    }
+printk("\n bloup 0\n");
+
+    // CP0 in all clusters initializes cooperatively VFS and DEVFS 
+    if( (core_lid == 0)  )
+    {
+        xptr_t  root_inode_xp;
+
+        // initialize root File System
+        if( CONFIG_VFS_ROOT_IS_FATFS )
+        {
+            root_inode_xp = fatfs_init();
+        }
+        else
+        {
+            printk("\n[PANIC] in %s : root FS must be FATFS\n", __FUNCTION__ );
+            hal_core_sleep();
+        }
+
+        if( root_inode_xp == XPTR_NULL )
+        {
+            printk("\n[PANIC] in %s : core[%x][%d] cannot initialize file system\n",
+                   __FUNCTION__ , local_cxy , core_lid );
+            hal_core_sleep();
+        }
+
+printk("\n bloup 1\n");
+
+        // mount the DEVFS File system
+            devfs_mount( root_inode_xp , "dev" );
+    }
+
+printk("\n bloup 2\n");
 
     // CP0 in I/O cluster print banner
@@ -811 +825 @@
     /////////////////////////////////////////////////////////////////////////////////
 
-    kinit_dmsg("\n[INFO] %s : core[%x][%d] exit barrier 3\n", 
-               __FUNCTION__ , core_cxy , core_lid );
+    kinit_dmsg("\n[INFO] %s : core[%x][%d] exit barrier 3 at cycle %d\n", 
+               __FUNCTION__ , core_cxy , core_lid , hal_time_stamp() );
 
     // each core activates its private PTI IRQ