zybo ベースシステムのロジック軽量化
目的
zyboのベースデザインでlinuxが動くことを確認した。
しかし、zyboのベースデザインでのロジック使用率が30%と少し多いので、いらないロジックを減らしたい。
report_utilization
report_utilization -hierarchical_depth 2 -hierarchical Copyright 1986-2014 Xilinx, Inc. All Rights Reserved. ------------------------------------------------------------------------------------ | Tool Version : Vivado v.2014.4 (lin64) Build 1071353 Tue Nov 18 16:47:07 MST 2014 | Date : Fri Jan 2 22:29:16 2015 | Host : T440s running 64-bit Ubuntu 14.04.1 LTS | Command : report_utilization -hierarchical_depth 2 -hierarchical | Design : system_wrapper | Device : xc7z010 | Design State : Routed ------------------------------------------------------------------------------------ Utilization Design Information Table of Contents ----------------- 1. Utilization by Hierarchy 1. Utilization by Hierarchy --------------------------- +-------------------------------------+------------------------------------------+------------+------------+---------+------+------+--------+--------+--------------+ | Instance | Module | Total LUTs | Logic LUTs | LUTRAMs | SRLs | FFs | RAMB36 | RAMB18 | DSP48 Blocks | +-------------------------------------+------------------------------------------+------------+------------+---------+------+------+--------+--------+--------------+ | system_wrapper | (top) | 5640 | 5398 | 50 | 192 | 7192 | 6 | 0 | 0 | | (system_wrapper) | (top) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | system_i | system | 5640 | 5398 | 50 | 192 | 7192 | 6 | 0 | 0 | | (system_i) | system | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | BTNs_4Bits | system_BTNs_4Bits_0 | 31 | 31 | 0 | 0 | 55 | 0 | 0 | 0 | | SWs_4Bits | system_SWs_4Bits_2 | 31 | 31 | 0 | 0 | 55 | 0 | 0 | 0 | | axi_dispctrl_0 | system_axi_dispctrl_0_0 | 629 | 629 | 0 | 0 | 667 | 0 | 0 | 0 | | axi_dispctrl_1 | system_axi_dispctrl_1_1 | 634 | 634 | 0 | 0 | 676 | 0 | 0 | 0 | | axi_i2s_adi_1 | system_axi_i2s_adi_1_0 | 231 | 190 | 40 | 1 | 229 | 0 | 0 | 0 | | axi_mem_intercon | system_axi_mem_intercon_0 | 449 | 439 | 10 | 0 | 539 | 0 | 0 | 0 | | axi_protocol_converter_0 | system_axi_protocol_converter_0_0 | 441 | 378 | 0 | 63 | 593 | 0 | 0 | 0 | | axi_vdma_0 | system_axi_vdma_0_0 | 1083 | 1019 | 0 | 64 | 1629 | 3 | 0 | 0 | | axi_vdma_1 | system_axi_vdma_1_1 | 1088 | 1024 | 0 | 64 | 1645 | 3 | 0 | 0 | | ground | system_ground_0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | hdmi_tx_0 | system_hdmi_tx_0_0 | 239 | 239 | 0 | 0 | 139 | 0 | 0 | 0 | | myLed_0 | system_myLed_0_1 | 297 | 297 | 0 | 0 | 169 | 0 | 0 | 0 | | processing_system7_0 | system_processing_system7_0_0 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | | processing_system7_0_axi_periph | system_processing_system7_0_axi_periph_2 | 492 | 492 | 0 | 0 | 796 | 0 | 0 | 0 | | vdd | system_vdd_1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | +-------------------------------------+------------------------------------------+------------+------------+---------+------+------+--------+--------+--------------+
やっぱり、vdma、ディスプレイコントローラが結構食っている
オーディオは使わないが、RAMに不都合がなければ残してもいいかもしれない。
