[1799] | 1 | ------------------------------------------------------------------------------- |
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| 2 | -- |
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| 3 | -- SD/MMC Bootloader |
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| 4 | -- Testbench for ram_loader |
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| 5 | -- |
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| 6 | -- $Id: tb_rl.vhd 77 2009-04-01 19:53:14Z arniml $ |
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| 7 | -- |
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| 8 | -- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org) |
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| 9 | -- |
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| 10 | -- All rights reserved, see COPYING. |
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| 11 | -- |
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| 12 | -- Redistribution and use in source and synthezised forms, with or without |
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| 13 | -- modification, are permitted provided that the following conditions are met: |
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| 14 | -- |
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| 15 | -- Redistributions of source code must retain the above copyright notice, |
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| 16 | -- this list of conditions and the following disclaimer. |
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| 17 | -- |
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| 18 | -- Redistributions in synthesized form must reproduce the above copyright |
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| 19 | -- notice, this list of conditions and the following disclaimer in the |
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| 20 | -- documentation and/or other materials provided with the distribution. |
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| 21 | -- |
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| 22 | -- Neither the name of the author nor the names of other contributors may |
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| 23 | -- be used to endorse or promote products derived from this software without |
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| 24 | -- specific prior written permission. |
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| 25 | -- |
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| 26 | -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 27 | -- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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| 28 | -- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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| 29 | -- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE |
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| 30 | -- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 31 | -- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 32 | -- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 33 | -- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 34 | -- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 35 | -- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 36 | -- POSSIBILITY OF SUCH DAMAGE. |
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| 37 | -- |
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| 38 | -- Please report bugs to the author, but before you do so, please |
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| 39 | -- make sure that this is not a derivative work and that |
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| 40 | -- you have the latest version of this file. |
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| 41 | -- |
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| 42 | -- The latest version of this file can be found at: |
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| 43 | -- http://www.opencores.org/projects.cgi/web/spi_boot/overview |
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| 44 | -- |
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| 45 | ------------------------------------------------------------------------------- |
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| 46 | |
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| 47 | entity tb_rl is |
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| 48 | |
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| 49 | end tb_rl; |
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| 50 | |
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| 51 | |
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| 52 | library ieee; |
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| 53 | use ieee.std_logic_1164.all; |
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| 54 | |
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| 55 | architecture behav of tb_rl is |
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| 56 | |
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| 57 | component chip |
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| 58 | port ( |
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| 59 | clk_i : in std_logic; |
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| 60 | reset_i : in std_logic; |
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| 61 | set_sel_n_i : in std_logic_vector(3 downto 0); |
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| 62 | spi_clk_o : out std_logic; |
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| 63 | spi_cs_n_o : out std_logic; |
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| 64 | spi_data_in_i : in std_logic; |
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| 65 | spi_data_out_o : out std_logic; |
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| 66 | start_i : in std_logic; |
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| 67 | mode_i : in std_logic; |
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| 68 | config_n_o : out std_logic; |
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| 69 | detached_o : out std_logic; |
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| 70 | cfg_init_n_i : in std_logic; |
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| 71 | cfg_done_i : in std_logic; |
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| 72 | dat_done_i : in std_logic; |
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| 73 | cfg_clk_o : out std_logic; |
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| 74 | cfg_dat_o : out std_logic |
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| 75 | ); |
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| 76 | end component; |
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| 77 | |
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| 78 | component card |
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| 79 | generic ( |
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| 80 | card_type_g : string := "none"; |
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| 81 | is_sd_card_g : integer := 1 |
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| 82 | ); |
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| 83 | port ( |
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| 84 | spi_clk_i : in std_logic; |
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| 85 | spi_cs_n_i : in std_logic; |
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| 86 | spi_data_i : in std_logic; |
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| 87 | spi_data_o : out std_logic |
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| 88 | ); |
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| 89 | end component; |
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| 90 | |
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| 91 | component ram_loader |
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| 92 | port ( |
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| 93 | clk_i : in std_logic; |
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| 94 | reset_i : in std_logic; |
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| 95 | lamp_o : out std_logic; |
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| 96 | cfg_clk_i : in std_logic; |
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| 97 | cfg_data_i : in std_logic; |
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| 98 | start_o : out std_logic; |
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| 99 | mode_o : out std_logic; |
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| 100 | done_o : out std_logic; |
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| 101 | detached_i : in std_logic; |
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| 102 | ram_addr_o : out std_logic_vector(15 downto 0); |
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| 103 | ram_data_b : out std_logic_vector( 7 downto 0); |
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| 104 | ram_ce_no : out std_logic_vector( 3 downto 0); |
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| 105 | ram_oe_no : out std_logic; |
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| 106 | ram_we_no : out std_logic |
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| 107 | ); |
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| 108 | end component; |
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| 109 | |
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| 110 | constant period_c : time := 100 ns; |
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| 111 | constant rl_period_c : time := 20 ns; |
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| 112 | constant reset_level_c : integer := 0; |
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| 113 | |
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| 114 | signal clk_s : std_logic; |
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| 115 | signal rl_clk_s: std_logic; |
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| 116 | signal reset_s : std_logic; |
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| 117 | |
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| 118 | -- SPI interface signals |
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| 119 | signal spi_clk_s : std_logic; |
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| 120 | signal spi_data_to_card_s : std_logic; |
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| 121 | signal spi_data_from_card_s : std_logic; |
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| 122 | signal spi_cs_n_s : std_logic; |
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| 123 | |
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| 124 | -- config related signals |
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| 125 | signal start_s : std_logic; |
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| 126 | signal mode_s : std_logic; |
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| 127 | signal config_n_s : std_logic; |
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| 128 | signal cfg_init_n_s : std_logic; |
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| 129 | signal cfg_done_s : std_logic; |
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| 130 | signal dat_done_s : std_logic; |
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| 131 | signal cfg_clk_s : std_logic; |
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| 132 | signal cfg_dat_s : std_logic; |
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| 133 | signal detached_s : std_logic; |
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| 134 | |
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| 135 | signal set_sel_n_s : std_logic_vector(3 downto 0); |
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| 136 | |
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| 137 | begin |
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| 138 | |
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| 139 | set_sel_n_s <= (others => '1'); |
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| 140 | cfg_init_n_s <= '1'; |
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| 141 | cfg_done_s <= '1'; |
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| 142 | |
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| 143 | ----------------------------------------------------------------------------- |
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| 144 | -- DUT |
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| 145 | ----------------------------------------------------------------------------- |
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| 146 | dut_b : chip |
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| 147 | port map ( |
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| 148 | clk_i => clk_s, |
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| 149 | reset_i => reset_s, |
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| 150 | set_sel_n_i => set_sel_n_s, |
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| 151 | spi_clk_o => spi_clk_s, |
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| 152 | spi_cs_n_o => spi_cs_n_s, |
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| 153 | spi_data_in_i => spi_data_from_card_s, |
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| 154 | spi_data_out_o => spi_data_to_card_s, |
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| 155 | start_i => start_s, |
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| 156 | mode_i => mode_s, |
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| 157 | config_n_o => config_n_s, |
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| 158 | detached_o => detached_s, |
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| 159 | cfg_init_n_i => cfg_init_n_s, |
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| 160 | cfg_done_i => cfg_done_s, |
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| 161 | dat_done_i => dat_done_s, |
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| 162 | cfg_clk_o => cfg_clk_s, |
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| 163 | cfg_dat_o => cfg_dat_s |
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| 164 | ); |
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| 165 | |
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| 166 | card_b : card |
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| 167 | generic map ( |
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| 168 | card_type_g => "Full Chip", |
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| 169 | is_sd_card_g => 1 |
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| 170 | ) |
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| 171 | port map ( |
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| 172 | spi_clk_i => spi_clk_s, |
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| 173 | spi_cs_n_i => spi_cs_n_s, |
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| 174 | spi_data_i => spi_data_to_card_s, |
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| 175 | spi_data_o => spi_data_from_card_s |
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| 176 | ); |
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| 177 | |
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| 178 | rl_b : ram_loader |
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| 179 | port map ( |
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| 180 | clk_i => rl_clk_s, |
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| 181 | reset_i => reset_s, |
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| 182 | lamp_o => open, |
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| 183 | cfg_clk_i => cfg_clk_s, |
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| 184 | cfg_data_i => cfg_dat_s, |
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| 185 | start_o => start_s, |
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| 186 | mode_o => mode_s, |
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| 187 | done_o => dat_done_s, |
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| 188 | detached_i => detached_s, |
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| 189 | ram_addr_o => open, |
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| 190 | ram_data_b => open, |
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| 191 | ram_ce_no => open, |
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| 192 | ram_oe_no => open, |
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| 193 | ram_we_no => open |
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| 194 | ); |
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| 195 | |
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| 196 | ----------------------------------------------------------------------------- |
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| 197 | -- Clock Generator |
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| 198 | ----------------------------------------------------------------------------- |
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| 199 | clk: process |
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| 200 | begin |
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| 201 | clk_s <= '0'; |
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| 202 | wait for period_c / 2; |
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| 203 | clk_s <= '1'; |
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| 204 | wait for period_c / 2; |
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| 205 | end process clk; |
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| 206 | |
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| 207 | rl_clk: process |
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| 208 | begin |
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| 209 | rl_clk_s <= '0'; |
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| 210 | wait for rl_period_c / 2; |
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| 211 | rl_clk_s <= '1'; |
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| 212 | wait for rl_period_c / 2; |
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| 213 | end process rl_clk; |
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| 214 | |
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| 215 | |
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| 216 | ----------------------------------------------------------------------------- |
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| 217 | -- Reset Generator |
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| 218 | ----------------------------------------------------------------------------- |
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| 219 | reset: process |
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| 220 | begin |
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| 221 | if reset_level_c = 0 then |
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| 222 | reset_s <= '0'; |
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| 223 | else |
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| 224 | reset_s <= '1'; |
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| 225 | end if; |
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| 226 | |
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| 227 | wait for period_c * 4 + 10 ns; |
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| 228 | |
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| 229 | reset_s <= not reset_s; |
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| 230 | |
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| 231 | wait; |
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| 232 | end process reset; |
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| 233 | |
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| 234 | |
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| 235 | ----------------------------------------------------------------------------- |
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| 236 | -- End of Simulation |
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| 237 | ----------------------------------------------------------------------------- |
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| 238 | eos: process |
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| 239 | begin |
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| 240 | wait for 4 ms; |
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| 241 | assert false |
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| 242 | report "No checks have been performed. Investigate waveforms." |
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| 243 | severity note; |
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| 244 | assert false |
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| 245 | report "End of simulation." |
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| 246 | severity failure; |
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| 247 | end process eos; |
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| 248 | |
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| 249 | end behav; |
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