SocLib Components General Index

VciMultiRam Functional Description

This VCI target is an embedded SRAM controller. This hardware component handles independent memory segments. Each segment is defined by a base address and a size (number of bytes). Both the base and the size parameters must be multiple of 4. The segments allocated to a given instance of this component are defined in the Mapping Table.

Each segment is implemented as a dynamically allocated array in the constructor.

A MultiRam will initialize its segments from a binary if an ElfLoader? is attached to it.

Component definition

Available in source:trunk/soclib/desc/soclib/vci_multi_ram.sd

Usage

VciMultiRam has no other parameter than VCI ones, it may be used like others, see SoclibCc/VciParameters

Uses( 'vci_multi_ram', **vci_parameters )

VciMultiRam CABA Implementation

The caba implementation is in

• source:trunk/soclib/systemc/include/caba/target/vci_multi_ram.h
• source:trunk/soclib/systemc/src/caba/target/vci_multi_ram.cc

Template parameters:

• The VCI parameters

Constructor parameters

• Uninitialized MultiRam

  VciMultiRam(
       sc_module_name name,                     // Instance name
       const soclib::common::IntTab &index,     //  Target index
       const soclib::common::MappingTable &mt)  // Mapping Table
  

• Elf-Initialized MultiRam

You may load a binary file, by creating a loader:

soclib::common::ElfLoader loader( "a.out" );
VciMultiRam(
     sc_module_name name,                     // Instance name
     const soclib::common::IntTab &index,     //  Target index
     const soclib::common::MappingTable &mt,  // Mapping Table
     soclib::common::ElfLoader &loader);

On reset, any loadable segment in ELF file will be reloaded .

Ports

• sc_in<bool> p_resetn : hardware reset
• sc_in<bool> p_clk : clock
• soclib::common::VciTarget<vci_param> p_vci : The VCI port