Changes between Initial Version and Version 1 of Component/Vci Simple Rom

Timestamp:

Nov 19, 2014, 3:15:02 PM (11 years ago)

Author:

alain

Comment:

--

Component/Vci Simple Rom

@@ +1 @@
+[wiki:Component SocLib Components General Index] 
+
+= !VciSimpleRom =
+
+== 1) Functional Description ==
+
+This VCI target is a multi-segments ROM controller. 
+
+The VCI DATA width must be 32 or 64 bits.
+Th VCI ADDRESS and the PLEN field must be multiple of 4 bytes.
+
+This component handles one or several independent memory segments. Each segment is defined by a base address and a size (number of bytes).
+
+A READ burst command packet (such a cache line request) contains one single flit. The number of flits in the response packet depends on the PLEN field:
+ * If VCI DATA width = 32 bits, each flit contains 4 bytes, and the number of flits is PLEN/4.
+ * If VCI DATA width = 64 bits, and PLEN define an even number of words, each flit contains 8 bytes, and the number of flits is PLEN/8.
+ * If VCI DATA width = 64 bits, and PLEN define an odd number of words, the last flit contains only 4 bytes (right justified), and the number of flits is PLEN/8 + 1.
+
+The !VciSimpleRam component initializes its segments from a ELF binary if a
+[wiki:Component/Loader Loader] is attached to it.
+
+== 2) Component definition & usage ==
+
+source:trunk/soclib/soclib/module/internal_component/vci_simple_rom/caba/metadata/vci_simple_rom.sd
+
+{{{
+Uses( 'vci_simple_ram' )
+}}}
+
+== 3) CABA Implementation ==
+ 
+=== CABA sources ===
+
+ * interface : source:trunk/soclib/soclib/module/internal_component/vci_simple_rom/caba/source/include/vci_simple_rom.h
+ * implementation : source:trunk/soclib/soclib/module/internal_component/vci_simple_rom/caba/source/src/vci_simple_rom.cpp
+
+=== CABA Constructor parameters ===
+
+{{{
+VciSimpleRom(
+     sc_module_name name,                     // Instance name
+     const soclib::common::IntTab &index,     // Target index
+     const soclib::common::MappingTable &mt,  // Mapping Table
+     soclib::common::Loader &loader);         // Loader
+}}}
+
+=== CABA Ports ===
+
+ * '''p_resetn''' : hardware reset
+ * '''p_clk'''    :  clock
+ * '''p_vci'''    : The VCI port
+