Changes between Version 70 and Version 71 of boot_procedure

Timestamp:

Dec 7, 2019, 6:22:31 PM (4 years ago)

Author:

alain

Comment:

--

boot_procedure

@@ -136 +136 @@
 == D) __Generic kernel initialization procedure__ ==
 
-The kernel_init() function is the kernel entry point when the boot_loader transfers control to the kernel. The argument is a pointer on the fixed size boot_info_t structure, stored in the local  ''kdata'' segment.
+The kernel_init() function is the kernel entry point when the boot_loader transfers control to the kernel. The argument is a pointer on the fixed size boot_info structure, stored in the local  ''kdata'' segment.
 
 The source code for this function is defined in the [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/kernel_init.c  almos-mkh/kernel/kern/kernel_init.c] file.
@@ -196 +196 @@
 === D5) Internal & external devices initialization ===
 
-In each cluster, the core[0] makes the devices initialization. For multi-channels devices, there is one channel device (called chdev_t) per channel.
+In each cluster[cxy], the core[cxy][0] makes the devices initialization (device == peripheral).
+
+For multi-channels devices, there is one channel device (called chdev) per channel. For each chdev, almost-mkh creates a dedicate kernel DEV thread, that is in charge of executing all requests targeting this ''chdev'', registered in a dedicated associated waiting queue. The chdev API is defined in the [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/chdev.h  almos-mkh/kernel/kern/chdev.h] and [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/chdev.c  almos-mkh/kernel/kern/chdev.c] files.
+
 For internal (replicated) devices, the chdev descriptors are allocated in the local cluster. For external (shared) devices, the chdev descriptors are regularly distributed on all clusters. These external chdev are indexed by a global index, and the host cluster is computed from this index by a modulo.