wiki:Component/VciMultiRam

Version 15 (modified by alinevieiramello@…, 15 years ago) (diff)

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SocLib Components General Index

VciRam

1) 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.

2) Component definition & usage

source:trunk/soclib/soclib/module/internal_component/vci_ram/caba/metadata/vci_ram.sd​

See SoclibCc/VciParameters 

Uses( 'vci_ram', **vci_parameters )

3) CABA Implementation

CABA sources

CABA Constructor parameters

  • Uninitialized VciRam 
    VciRam(
     sc_module_name name,                     // Instance name
     const soclib::common::IntTab &index,     //  Target index
     const soclib::common::MappingTable &mt)  // Mapping Table
  • Elf-Initialized VciRam

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

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

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

CABA Ports

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

4) TLM-T Implementation

TLM-T sources

TLM-T Constructor parameters

VciRam(
     sc_module_name name,                     // Instance name
     const soclib::common::IntTab &index,     // Target index
     const soclib::common::MappingTable &mt,  // Mapping Table
     soclib::common::ElfLoader &loader);      // Loader

TLM-T Ports

  • soclib::tlmt::VciTarget<vci_param> p_vci : The VCI port