diff options
| author | Josh Blum <josh@joshknows.com> | 2010-04-15 11:24:24 -0700 |
|---|---|---|
| committer | Josh Blum <josh@joshknows.com> | 2010-04-15 11:24:24 -0700 |
| commit | 05d77f772317de5d925301aa11bb9a880656dd05 (patch) | |
| tree | 0910bfb9265fab1644a3d3a1706719f1b038d193 /fpga/usrp2/opencores/spi_boot/rtl | |
| parent | 16818dc98e97b69a028c47e66ebfb16e32565533 (diff) | |
| download | uhd-05d77f772317de5d925301aa11bb9a880656dd05.tar.gz uhd-05d77f772317de5d925301aa11bb9a880656dd05.tar.bz2 uhd-05d77f772317de5d925301aa11bb9a880656dd05.zip | |
moved usrp1 and usrp2 fpga dirs into fpga subdirectory
Diffstat (limited to 'fpga/usrp2/opencores/spi_boot/rtl')
28 files changed, 2405 insertions, 0 deletions
diff --git a/fpga/usrp2/opencores/spi_boot/rtl/CVS/Entries b/fpga/usrp2/opencores/spi_boot/rtl/CVS/Entries new file mode 100644 index 000000000..a4756ee6f --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/CVS/Entries @@ -0,0 +1 @@ +D/vhdl//// diff --git a/fpga/usrp2/opencores/spi_boot/rtl/CVS/Repository b/fpga/usrp2/opencores/spi_boot/rtl/CVS/Repository new file mode 100644 index 000000000..dcb0a69bc --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/CVS/Repository @@ -0,0 +1 @@ +spi_boot/rtl diff --git a/fpga/usrp2/opencores/spi_boot/rtl/CVS/Root b/fpga/usrp2/opencores/spi_boot/rtl/CVS/Root new file mode 100644 index 000000000..44b2aa23b --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous diff --git a/fpga/usrp2/opencores/spi_boot/rtl/CVS/Template b/fpga/usrp2/opencores/spi_boot/rtl/CVS/Template new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/CVS/Template diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Entries b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Entries new file mode 100644 index 000000000..880f353ca --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Entries @@ -0,0 +1,15 @@ +/chip-e.vhd/1.3/Thu Apr 7 20:44:23 2005// +/chip-full-a.vhd/1.6/Thu Apr 7 20:44:23 2005// +/chip-full-c.vhd/1.1/Tue Feb 8 20:41:31 2005// +/chip-minimal-a.vhd/1.6/Thu Apr 7 20:44:23 2005// +/chip-minimal-c.vhd/1.1/Tue Feb 8 20:41:32 2005// +/chip-mmc-a.vhd/1.6/Thu Apr 7 20:44:23 2005// +/chip-mmc-c.vhd/1.1/Tue Feb 8 20:41:32 2005// +/chip-sd-a.vhd/1.6/Thu Apr 7 20:44:23 2005// +/chip-sd-c.vhd/1.1/Tue Feb 8 20:41:33 2005// +/spi_boot-c.vhd/1.2/Fri Feb 18 06:42:11 2005// +/spi_boot.vhd/1.9/Sun Feb 25 18:24:12 2007// +/spi_boot_pack-p.vhd/1.1/Tue Feb 8 20:41:33 2005// +/spi_counter-c.vhd/1.1/Tue Feb 8 20:41:33 2005// +/spi_counter.vhd/1.2/Sun Feb 25 18:24:12 2007// +D/sample//// diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Repository b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Repository new file mode 100644 index 000000000..a09f391ea --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Repository @@ -0,0 +1 @@ +spi_boot/rtl/vhdl diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Root b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Root new file mode 100644 index 000000000..44b2aa23b --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Template b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Template new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/CVS/Template diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-e.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-e.vhd new file mode 100644 index 000000000..0bdd05aff --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-e.vhd @@ -0,0 +1,91 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- Chip toplevel +-- +-- $Id: chip-e.vhd,v 1.3 2005/04/07 20:44:23 arniml Exp $ +-- +-- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org) +-- +-- All rights reserved, see COPYING. +-- +-- Redistribution and use in source and synthezised forms, with or without +-- modification, are permitted provided that the following conditions are met: +-- +-- Redistributions of source code must retain the above copyright notice, +-- this list of conditions and the following disclaimer. +-- +-- Redistributions in synthesized form must reproduce the above copyright +-- notice, this list of conditions and the following disclaimer in the +-- documentation and/or other materials provided with the distribution. +-- +-- Neither the name of the author nor the names of other contributors may +-- be used to endorse or promote products derived from this software without +-- specific prior written permission. +-- +-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE +-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +-- POSSIBILITY OF SUCH DAMAGE. +-- +-- Please report bugs to the author, but before you do so, please +-- make sure that this is not a derivative work and that +-- you have the latest version of this file. +-- +-- The latest version of this file can be found at: +-- http://www.opencores.org/projects.cgi/web/spi_boot/overview +-- +------------------------------------------------------------------------------- + +library ieee; +use ieee.std_logic_1164.all; + + +entity chip is + + port ( + -- System Interface ------------------------------------------------------- + clk_i : in std_logic; + reset_i : in std_logic; + set_sel_n_i : in std_logic_vector(3 downto 0); + -- SD Card Interface ------------------------------------------------------ + spi_clk_o : out std_logic; + spi_cs_n_o : out std_logic; + spi_data_in_i : in std_logic; + spi_data_out_o : out std_logic; + -- FPGA Configuration Interface ------------------------------------------- + start_i : in std_logic; + mode_i : in std_logic; + config_n_o : out std_logic; + detached_o : out std_logic; + cfg_init_n_i : in std_logic; + cfg_done_i : in std_logic; + dat_done_i : in std_logic; + cfg_clk_o : out std_logic; + cfg_dat_o : out std_logic + ); + +end chip; + + +------------------------------------------------------------------------------- +-- File History: +-- +-- $Log: chip-e.vhd,v $ +-- Revision 1.3 2005/04/07 20:44:23 arniml +-- add new port detached_o +-- +-- Revision 1.2 2005/03/08 22:07:11 arniml +-- added set selection +-- +-- Revision 1.1 2005/02/08 20:41:30 arniml +-- initial check-in +-- +------------------------------------------------------------------------------- diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-full-a.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-full-a.vhd new file mode 100644 index 000000000..e43ecb3c4 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-full-a.vhd @@ -0,0 +1,164 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- Chip toplevel design with full feature set +-- +-- $Id: chip-full-a.vhd,v 1.6 2005/04/07 20:44:23 arniml Exp $ +-- +-- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org) +-- +-- All rights reserved, see COPYING. +-- +-- Redistribution and use in source and synthezised forms, with or without +-- modification, are permitted provided that the following conditions are met: +-- +-- Redistributions of source code must retain the above copyright notice, +-- this list of conditions and the following disclaimer. +-- +-- Redistributions in synthesized form must reproduce the above copyright +-- notice, this list of conditions and the following disclaimer in the +-- documentation and/or other materials provided with the distribution. +-- +-- Neither the name of the author nor the names of other contributors may +-- be used to endorse or promote products derived from this software without +-- specific prior written permission. +-- +-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE +-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +-- POSSIBILITY OF SUCH DAMAGE. +-- +-- Please report bugs to the author, but before you do so, please +-- make sure that this is not a derivative work and that +-- you have the latest version of this file. +-- +-- The latest version of this file can be found at: +-- http://www.opencores.org/projects.cgi/web/spi_boot/overview +-- +------------------------------------------------------------------------------- + +library ieee; +use ieee.std_logic_1164.all; + + +architecture full of chip is + + component spi_boot + generic ( + width_set_sel_g : integer := 4; + width_bit_cnt_g : integer := 6; + width_img_cnt_g : integer := 2; + num_bits_per_img_g : integer := 18; + sd_init_g : integer := 0; + mmc_compat_clk_div_g : integer := 0; + width_mmc_clk_div_g : integer := 0; + reset_level_g : integer := 0 + ); + port ( + clk_i : in std_logic; + reset_i : in std_logic; + set_sel_i : in std_logic_vector(width_set_sel_g-1 downto 0); + spi_clk_o : out std_logic; + spi_cs_n_o : out std_logic; + spi_data_in_i : in std_logic; + spi_data_out_o : out std_logic; + spi_en_outs_o : out std_logic; + start_i : in std_logic; + mode_i : in std_logic; + config_n_o : out std_logic; + detached_o : out std_logic; + cfg_init_n_i : in std_logic; + cfg_done_i : in std_logic; + dat_done_i : in std_logic; + cfg_clk_o : out std_logic; + cfg_dat_o : out std_logic + ); + end component; + + signal spi_clk_s : std_logic; + signal spi_cs_n_s : std_logic; + signal spi_data_out_s : std_logic; + signal spi_en_outs_s : std_logic; + + signal set_sel_s : std_logic_vector(3 downto 0); + +begin + + set_sel_s <= not set_sel_n_i; + + spi_boot_b : spi_boot + generic map ( + width_set_sel_g => 4, -- 16 sets + width_bit_cnt_g => 12, -- 512 bytes per block + width_img_cnt_g => 2, -- 4 images + num_bits_per_img_g => 18, -- 256 kByte per image + sd_init_g => 1, -- use SD specific initialization + mmc_compat_clk_div_g => 13, -- MMC compat 400 kHz > 10 MHz / (13*2) + width_mmc_clk_div_g => 4 -- need 5 bits for MMC compat divider + ) + port map ( + clk_i => clk_i, + reset_i => reset_i, + set_sel_i => set_sel_s, + spi_clk_o => spi_clk_s, + spi_cs_n_o => spi_cs_n_s, + spi_data_in_i => spi_data_in_i, + spi_data_out_o => spi_data_out_s, + spi_en_outs_o => spi_en_outs_s, + start_i => start_i, + mode_i => mode_i, + config_n_o => config_n_o, + detached_o => detached_o, + cfg_init_n_i => cfg_init_n_i, + cfg_done_i => cfg_done_i, + dat_done_i => dat_done_i, + cfg_clk_o => cfg_clk_o, + cfg_dat_o => cfg_dat_o + ); + + ----------------------------------------------------------------------------- + -- Three state drivers for SPI outputs. + ----------------------------------------------------------------------------- + spi_clk_o <= spi_clk_s + when spi_en_outs_s = '1' else + 'Z'; + spi_cs_n_o <= spi_cs_n_s + when spi_en_outs_s = '1' else + 'Z'; + spi_data_out_o <= spi_data_out_s + when spi_en_outs_s = '1' else + 'Z'; + +end full; + + +------------------------------------------------------------------------------- +-- File History: +-- +-- $Log: chip-full-a.vhd,v $ +-- Revision 1.6 2005/04/07 20:44:23 arniml +-- add new port detached_o +-- +-- Revision 1.5 2005/03/09 19:48:34 arniml +-- invert level of set_sel input +-- +-- Revision 1.4 2005/03/08 22:07:12 arniml +-- added set selection +-- +-- Revision 1.3 2005/02/18 06:42:11 arniml +-- clarify wording for images +-- +-- Revision 1.2 2005/02/16 18:54:37 arniml +-- added tri-state drivers for spi outputs +-- +-- Revision 1.1 2005/02/08 20:41:31 arniml +-- initial check-in +-- +------------------------------------------------------------------------------- diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-full-c.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-full-c.vhd new file mode 100644 index 000000000..da88552c4 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-full-c.vhd @@ -0,0 +1,19 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- +-- $Id: chip-full-c.vhd,v 1.1 2005/02/08 20:41:31 arniml Exp $ +-- +------------------------------------------------------------------------------- + +configuration chip_full_c0 of chip is + + for full + + for spi_boot_b : spi_boot + use configuration work.spi_boot_rtl_c0; + end for; + + end for; + +end chip_full_c0; diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-minimal-a.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-minimal-a.vhd new file mode 100644 index 000000000..090d0b79c --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-minimal-a.vhd @@ -0,0 +1,164 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- Chip toplevel design with minimal feature set +-- +-- $Id: chip-minimal-a.vhd,v 1.6 2005/04/07 20:44:23 arniml Exp $ +-- +-- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org) +-- +-- All rights reserved, see COPYING. +-- +-- Redistribution and use in source and synthezised forms, with or without +-- modification, are permitted provided that the following conditions are met: +-- +-- Redistributions of source code must retain the above copyright notice, +-- this list of conditions and the following disclaimer. +-- +-- Redistributions in synthesized form must reproduce the above copyright +-- notice, this list of conditions and the following disclaimer in the +-- documentation and/or other materials provided with the distribution. +-- +-- Neither the name of the author nor the names of other contributors may +-- be used to endorse or promote products derived from this software without +-- specific prior written permission. +-- +-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE +-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +-- POSSIBILITY OF SUCH DAMAGE. +-- +-- Please report bugs to the author, but before you do so, please +-- make sure that this is not a derivative work and that +-- you have the latest version of this file. +-- +-- The latest version of this file can be found at: +-- http://www.opencores.org/projects.cgi/web/spi_boot/overview +-- +------------------------------------------------------------------------------- + +library ieee; +use ieee.std_logic_1164.all; + + +architecture minimal of chip is + + component spi_boot + generic ( + width_set_sel_g : integer := 4; + width_bit_cnt_g : integer := 6; + width_img_cnt_g : integer := 2; + num_bits_per_img_g : integer := 18; + sd_init_g : integer := 0; + mmc_compat_clk_div_g : integer := 0; + width_mmc_clk_div_g : integer := 0; + reset_level_g : integer := 0 + ); + port ( + clk_i : in std_logic; + reset_i : in std_logic; + set_sel_i : in std_logic_vector(width_set_sel_g-1 downto 0); + spi_clk_o : out std_logic; + spi_cs_n_o : out std_logic; + spi_data_in_i : in std_logic; + spi_data_out_o : out std_logic; + spi_en_outs_o : out std_logic; + start_i : in std_logic; + mode_i : in std_logic; + config_n_o : out std_logic; + detached_o : out std_logic; + cfg_init_n_i : in std_logic; + cfg_done_i : in std_logic; + dat_done_i : in std_logic; + cfg_clk_o : out std_logic; + cfg_dat_o : out std_logic + ); + end component; + + signal spi_clk_s : std_logic; + signal spi_cs_n_s : std_logic; + signal spi_data_out_s : std_logic; + signal spi_en_outs_s : std_logic; + + signal set_sel_s : std_logic_vector(3 downto 0); + +begin + + set_sel_s <= not set_sel_n_i; + + spi_boot_b : spi_boot + generic map ( + width_set_sel_g => 4, -- 16 sets + width_bit_cnt_g => 6, -- 8 bytes per block + width_img_cnt_g => 2, -- 4 images + num_bits_per_img_g => 18, -- 256 kByte per image + sd_init_g => 0, -- no SD specific initialization + mmc_compat_clk_div_g => 0, -- no MMC compatibility + width_mmc_clk_div_g => 0 -- no MMC compatibility + ) + port map ( + clk_i => clk_i, + reset_i => reset_i, + set_sel_i => set_sel_s, + spi_clk_o => spi_clk_s, + spi_cs_n_o => spi_cs_n_s, + spi_data_in_i => spi_data_in_i, + spi_data_out_o => spi_data_out_s, + spi_en_outs_o => spi_en_outs_s, + start_i => start_i, + mode_i => mode_i, + config_n_o => config_n_o, + detached_o => detached_o, + cfg_init_n_i => cfg_init_n_i, + cfg_done_i => cfg_done_i, + dat_done_i => dat_done_i, + cfg_clk_o => cfg_clk_o, + cfg_dat_o => cfg_dat_o + ); + + ----------------------------------------------------------------------------- + -- Three state drivers for SPI outputs. + ----------------------------------------------------------------------------- + spi_clk_o <= spi_clk_s + when spi_en_outs_s = '1' else + 'Z'; + spi_cs_n_o <= spi_cs_n_s + when spi_en_outs_s = '1' else + 'Z'; + spi_data_out_o <= spi_data_out_s + when spi_en_outs_s = '1' else + 'Z'; + +end minimal; + + +------------------------------------------------------------------------------- +-- File History: +-- +-- $Log: chip-minimal-a.vhd,v $ +-- Revision 1.6 2005/04/07 20:44:23 arniml +-- add new port detached_o +-- +-- Revision 1.5 2005/03/09 19:48:34 arniml +-- invert level of set_sel input +-- +-- Revision 1.4 2005/03/08 22:07:12 arniml +-- added set selection +-- +-- Revision 1.3 2005/02/18 06:42:12 arniml +-- clarify wording for images +-- +-- Revision 1.2 2005/02/16 18:54:39 arniml +-- added tri-state drivers for spi outputs +-- +-- Revision 1.1 2005/02/08 20:41:31 arniml +-- initial check-in +-- +------------------------------------------------------------------------------- diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-minimal-c.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-minimal-c.vhd new file mode 100644 index 000000000..5547747b2 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-minimal-c.vhd @@ -0,0 +1,19 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- +-- $Id: chip-minimal-c.vhd,v 1.1 2005/02/08 20:41:32 arniml Exp $ +-- +------------------------------------------------------------------------------- + +configuration chip_minimal_c0 of chip is + + for minimal + + for spi_boot_b : spi_boot + use configuration work.spi_boot_rtl_c0; + end for; + + end for; + +end chip_minimal_c0; diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-mmc-a.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-mmc-a.vhd new file mode 100644 index 000000000..cef42d268 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-mmc-a.vhd @@ -0,0 +1,164 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- Chip toplevel design with MMC feature set +-- +-- $Id: chip-mmc-a.vhd,v 1.6 2005/04/07 20:44:23 arniml Exp $ +-- +-- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org) +-- +-- All rights reserved, see COPYING. +-- +-- Redistribution and use in source and synthezised forms, with or without +-- modification, are permitted provided that the following conditions are met: +-- +-- Redistributions of source code must retain the above copyright notice, +-- this list of conditions and the following disclaimer. +-- +-- Redistributions in synthesized form must reproduce the above copyright +-- notice, this list of conditions and the following disclaimer in the +-- documentation and/or other materials provided with the distribution. +-- +-- Neither the name of the author nor the names of other contributors may +-- be used to endorse or promote products derived from this software without +-- specific prior written permission. +-- +-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE +-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +-- POSSIBILITY OF SUCH DAMAGE. +-- +-- Please report bugs to the author, but before you do so, please +-- make sure that this is not a derivative work and that +-- you have the latest version of this file. +-- +-- The latest version of this file can be found at: +-- http://www.opencores.org/projects.cgi/web/spi_boot/overview +-- +------------------------------------------------------------------------------- + +library ieee; +use ieee.std_logic_1164.all; + + +architecture mmc of chip is + + component spi_boot + generic ( + width_set_sel_g : integer := 4; + width_bit_cnt_g : integer := 6; + width_img_cnt_g : integer := 2; + num_bits_per_img_g : integer := 18; + sd_init_g : integer := 0; + mmc_compat_clk_div_g : integer := 0; + width_mmc_clk_div_g : integer := 0; + reset_level_g : integer := 0 + ); + port ( + clk_i : in std_logic; + reset_i : in std_logic; + set_sel_i : in std_logic_vector(width_set_sel_g-1 downto 0); + spi_clk_o : out std_logic; + spi_cs_n_o : out std_logic; + spi_data_in_i : in std_logic; + spi_data_out_o : out std_logic; + spi_en_outs_o : out std_logic; + start_i : in std_logic; + mode_i : in std_logic; + config_n_o : out std_logic; + detached_o : out std_logic; + cfg_init_n_i : in std_logic; + cfg_done_i : in std_logic; + dat_done_i : in std_logic; + cfg_clk_o : out std_logic; + cfg_dat_o : out std_logic + ); + end component; + + signal spi_clk_s : std_logic; + signal spi_cs_n_s : std_logic; + signal spi_data_out_s : std_logic; + signal spi_en_outs_s : std_logic; + + signal set_sel_s : std_logic_vector(3 downto 0); + +begin + + set_sel_s <= not set_sel_n_i; + + spi_boot_b : spi_boot + generic map ( + width_set_sel_g => 4, -- 16 sets + width_bit_cnt_g => 12, -- 512 bytes per block + width_img_cnt_g => 2, -- 4 images + num_bits_per_img_g => 18, -- 256 kByte per image + sd_init_g => 0, -- no SD specific initialization + mmc_compat_clk_div_g => 13, -- MMC compat 400 kHz > 10 MHz / (13*2) + width_mmc_clk_div_g => 4 -- need 5 bits for MMC compat divider + ) + port map ( + clk_i => clk_i, + reset_i => reset_i, + set_sel_i => set_sel_s, + spi_clk_o => spi_clk_s, + spi_cs_n_o => spi_cs_n_s, + spi_data_in_i => spi_data_in_i, + spi_data_out_o => spi_data_out_s, + spi_en_outs_o => spi_en_outs_s, + start_i => start_i, + mode_i => mode_i, + config_n_o => config_n_o, + detached_o => detached_o, + cfg_init_n_i => cfg_init_n_i, + cfg_done_i => cfg_done_i, + dat_done_i => dat_done_i, + cfg_clk_o => cfg_clk_o, + cfg_dat_o => cfg_dat_o + ); + + ----------------------------------------------------------------------------- + -- Three state drivers for SPI outputs. + ----------------------------------------------------------------------------- + spi_clk_o <= spi_clk_s + when spi_en_outs_s = '1' else + 'Z'; + spi_cs_n_o <= spi_cs_n_s + when spi_en_outs_s = '1' else + 'Z'; + spi_data_out_o <= spi_data_out_s + when spi_en_outs_s = '1' else + 'Z'; + +end mmc; + + +------------------------------------------------------------------------------- +-- File History: +-- +-- $Log: chip-mmc-a.vhd,v $ +-- Revision 1.6 2005/04/07 20:44:23 arniml +-- add new port detached_o +-- +-- Revision 1.5 2005/03/09 19:48:34 arniml +-- invert level of set_sel input +-- +-- Revision 1.4 2005/03/08 22:07:12 arniml +-- added set selection +-- +-- Revision 1.3 2005/02/18 06:42:13 arniml +-- clarify wording for images +-- +-- Revision 1.2 2005/02/16 18:54:39 arniml +-- added tri-state drivers for spi outputs +-- +-- Revision 1.1 2005/02/08 20:41:32 arniml +-- initial check-in +-- +------------------------------------------------------------------------------- diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-mmc-c.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-mmc-c.vhd new file mode 100644 index 000000000..6131013e4 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-mmc-c.vhd @@ -0,0 +1,19 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- +-- $Id: chip-mmc-c.vhd,v 1.1 2005/02/08 20:41:32 arniml Exp $ +-- +------------------------------------------------------------------------------- + +configuration chip_mmc_c0 of chip is + + for mmc + + for spi_boot_b : spi_boot + use configuration work.spi_boot_rtl_c0; + end for; + + end for; + +end chip_mmc_c0; diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-sd-a.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-sd-a.vhd new file mode 100644 index 000000000..c955a5f3a --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-sd-a.vhd @@ -0,0 +1,164 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- Chip toplevel design with SD feature set +-- +-- $Id: chip-sd-a.vhd,v 1.6 2005/04/07 20:44:23 arniml Exp $ +-- +-- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org) +-- +-- All rights reserved, see COPYING. +-- +-- Redistribution and use in source and synthezised forms, with or without +-- modification, are permitted provided that the following conditions are met: +-- +-- Redistributions of source code must retain the above copyright notice, +-- this list of conditions and the following disclaimer. +-- +-- Redistributions in synthesized form must reproduce the above copyright +-- notice, this list of conditions and the following disclaimer in the +-- documentation and/or other materials provided with the distribution. +-- +-- Neither the name of the author nor the names of other contributors may +-- be used to endorse or promote products derived from this software without +-- specific prior written permission. +-- +-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE +-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +-- POSSIBILITY OF SUCH DAMAGE. +-- +-- Please report bugs to the author, but before you do so, please +-- make sure that this is not a derivative work and that +-- you have the latest version of this file. +-- +-- The latest version of this file can be found at: +-- http://www.opencores.org/projects.cgi/web/spi_boot/overview +-- +------------------------------------------------------------------------------- + +library ieee; +use ieee.std_logic_1164.all; + + +architecture sd of chip is + + component spi_boot + generic ( + width_set_sel_g : integer := 4; + width_bit_cnt_g : integer := 6; + width_img_cnt_g : integer := 2; + num_bits_per_img_g : integer := 18; + sd_init_g : integer := 0; + mmc_compat_clk_div_g : integer := 0; + width_mmc_clk_div_g : integer := 0; + reset_level_g : integer := 0 + ); + port ( + clk_i : in std_logic; + reset_i : in std_logic; + set_sel_i : in std_logic_vector(width_set_sel_g-1 downto 0); + spi_clk_o : out std_logic; + spi_cs_n_o : out std_logic; + spi_data_in_i : in std_logic; + spi_data_out_o : out std_logic; + spi_en_outs_o : out std_logic; + start_i : in std_logic; + mode_i : in std_logic; + config_n_o : out std_logic; + detached_o : out std_logic; + cfg_init_n_i : in std_logic; + cfg_done_i : in std_logic; + dat_done_i : in std_logic; + cfg_clk_o : out std_logic; + cfg_dat_o : out std_logic + ); + end component; + + signal spi_clk_s : std_logic; + signal spi_cs_n_s : std_logic; + signal spi_data_out_s : std_logic; + signal spi_en_outs_s : std_logic; + + signal set_sel_s : std_logic_vector(3 downto 0); + +begin + + set_sel_s <= not set_sel_n_i; + + spi_boot_b : spi_boot + generic map ( + width_set_sel_g => 4, -- 16 sets + width_bit_cnt_g => 12, -- 512 bytes per block + width_img_cnt_g => 2, -- 4 images + num_bits_per_img_g => 18, -- 256 kByte per image + sd_init_g => 1, -- SD specific initialization + mmc_compat_clk_div_g => 0, -- no MMC compatibility + width_mmc_clk_div_g => 0 -- no MMC compatibility + ) + port map ( + clk_i => clk_i, + reset_i => reset_i, + set_sel_i => set_sel_s, + spi_clk_o => spi_clk_s, + spi_cs_n_o => spi_cs_n_s, + spi_data_in_i => spi_data_in_i, + spi_data_out_o => spi_data_out_s, + spi_en_outs_o => spi_en_outs_s, + start_i => start_i, + mode_i => mode_i, + config_n_o => config_n_o, + detached_o => detached_o, + cfg_init_n_i => cfg_init_n_i, + cfg_done_i => cfg_done_i, + dat_done_i => dat_done_i, + cfg_clk_o => cfg_clk_o, + cfg_dat_o => cfg_dat_o + ); + + ----------------------------------------------------------------------------- + -- Three state drivers for SPI outputs. + ----------------------------------------------------------------------------- + spi_clk_o <= spi_clk_s + when spi_en_outs_s = '1' else + 'Z'; + spi_cs_n_o <= spi_cs_n_s + when spi_en_outs_s = '1' else + 'Z'; + spi_data_out_o <= spi_data_out_s + when spi_en_outs_s = '1' else + 'Z'; + +end sd; + + +------------------------------------------------------------------------------- +-- File History: +-- +-- $Log: chip-sd-a.vhd,v $ +-- Revision 1.6 2005/04/07 20:44:23 arniml +-- add new port detached_o +-- +-- Revision 1.5 2005/03/09 19:48:34 arniml +-- invert level of set_sel input +-- +-- Revision 1.4 2005/03/08 22:07:12 arniml +-- added set selection +-- +-- Revision 1.3 2005/02/18 06:42:14 arniml +-- clarify wording for images +-- +-- Revision 1.2 2005/02/16 18:54:39 arniml +-- added tri-state drivers for spi outputs +-- +-- Revision 1.1 2005/02/08 20:41:32 arniml +-- initial check-in +-- +------------------------------------------------------------------------------- diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-sd-c.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-sd-c.vhd new file mode 100644 index 000000000..91e41ddfb --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/chip-sd-c.vhd @@ -0,0 +1,19 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- +-- $Id: chip-sd-c.vhd,v 1.1 2005/02/08 20:41:33 arniml Exp $ +-- +------------------------------------------------------------------------------- + +configuration chip_sd_c0 of chip is + + for sd + + for spi_boot_b : spi_boot + use configuration work.spi_boot_rtl_c0; + end for; + + end for; + +end chip_sd_c0; diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Entries b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Entries new file mode 100644 index 000000000..552a7baad --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Entries @@ -0,0 +1,3 @@ +/ram_loader-c.vhd/1.1/Sun Apr 10 18:02:32 2005// +/ram_loader.vhd/1.2/Sun Apr 10 17:17:23 2005// +D diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Repository b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Repository new file mode 100644 index 000000000..026a73983 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Repository @@ -0,0 +1 @@ +spi_boot/rtl/vhdl/sample diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Root b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Root new file mode 100644 index 000000000..44b2aa23b --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cvs.opencores.org:/cvsroot/anonymous diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Template b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Template new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/CVS/Template diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/ram_loader-c.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/ram_loader-c.vhd new file mode 100644 index 000000000..8b26c4d57 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/ram_loader-c.vhd @@ -0,0 +1,10 @@ +------------------------------------------------------------------------------- +-- $Id: ram_loader-c.vhd,v 1.1 2005/04/10 18:02:32 arniml Exp $ +------------------------------------------------------------------------------- + +configuration ram_loader_rtl_c0 of ram_loader is + + for rtl + end for; + +end ram_loader_rtl_c0; diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/ram_loader.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/ram_loader.vhd new file mode 100644 index 000000000..c604876d7 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/sample/ram_loader.vhd @@ -0,0 +1,355 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- Sample client for loading an image to asynchronous SRAM +-- +-- $Id: ram_loader.vhd,v 1.2 2005/04/10 17:17:23 arniml Exp $ +-- +-- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org) +-- +-- All rights reserved, see COPYING. +-- +-- Redistribution and use in source and synthezised forms, with or without +-- modification, are permitted provided that the following conditions are met: +-- +-- Redistributions of source code must retain the above copyright notice, +-- this list of conditions and the following disclaimer. +-- +-- Redistributions in synthesized form must reproduce the above copyright +-- notice, this list of conditions and the following disclaimer in the +-- documentation and/or other materials provided with the distribution. +-- +-- Neither the name of the author nor the names of other contributors may +-- be used to endorse or promote products derived from this software without +-- specific prior written permission. +-- +-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE +-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +-- POSSIBILITY OF SUCH DAMAGE. +-- +-- Please report bugs to the author, but before you do so, please +-- make sure that this is not a derivative work and that +-- you have the latest version of this file. +-- +-- The latest version of this file can be found at: +-- http://www.opencores.org/projects.cgi/web/spi_boot/overview +-- +------------------------------------------------------------------------------- + +library ieee; +use ieee.std_logic_1164.all; + + +entity ram_loader is + + port ( + -- Global Interface ------------------------------------------------------- + clk_i : in std_logic; + reset_i : in std_logic; + lamp_o : out std_logic; + -- Config Interface ------------------------------------------------------- + cfg_clk_i : in std_logic; + cfg_data_i : in std_logic; + start_o : out std_logic; + mode_o : out std_logic; + done_o : out std_logic; + detached_i : in std_logic; + -- Asynchronous RAM Interface --------------------------------------------- + ram_addr_o : out std_logic_vector(15 downto 0); + ram_data_b : out std_logic_vector( 7 downto 0); + ram_ce_no : out std_logic_vector( 3 downto 0); + ram_oe_no : out std_logic; + ram_we_no : out std_logic + ); + +end ram_loader; + + +library ieee; +use ieee.numeric_std.all; + +architecture rtl of ram_loader is + + signal addr_q : unsigned(17 downto 0); + signal inc_addr_s : boolean; + + signal shift_dat_q : std_logic_vector(7 downto 0); + signal ser_dat_q : std_logic_vector(7 downto 0); + signal bit_q : unsigned(2 downto 0); + signal bit_ovfl_q : boolean; + + type fsm_t is (IDLE, + WE_ON, + WE_OFF, + INC_ADDR1, INC_ADDR2, + FINISHED); + signal fsm_s, + fsm_q : fsm_t; + signal done_q : std_logic; + signal done_s : boolean; + signal mode_q, + mode_s : std_logic; + + signal ram_we_n_q, + ram_we_n_s : std_logic; + signal ram_ce_n_q, + ram_ce_n_s : std_logic_vector(3 downto 0); + + type start_fsm_t is (WAIT_DETACH, + CHECK_NO_DONE, + WAIT_DONE); + signal start_fsm_s, + start_fsm_q : start_fsm_t; + + signal start_s, + start_q : std_logic; + signal enable_s, + enable_q : boolean; + +begin + + ----------------------------------------------------------------------------- + -- Process seq + -- + -- Purpose: + -- Implements the sequential elements clocked with cfg_clk_i. + -- + seq: process (cfg_clk_i, reset_i) + begin + if reset_i = '0' then + addr_q <= (others => '0'); + shift_dat_q <= (others => '0'); + ser_dat_q <= (others => '0'); + bit_q <= (others => '0'); + bit_ovfl_q <= false; + fsm_q <= IDLE; + ram_we_n_q <= '1'; + ram_ce_n_q <= (others => '1'); + done_q <= '0'; + mode_q <= '0'; + + elsif cfg_clk_i'event and cfg_clk_i = '1' then + if inc_addr_s then + addr_q <= addr_q + 1; + end if; + + if enable_q then + bit_q <= bit_q + 1; + bit_ovfl_q <= bit_q = 7; + + shift_dat_q(0) <= cfg_data_i; + shift_dat_q(7 downto 1) <= shift_dat_q(6 downto 0); + end if; + + -- update register when 8 serial bits have been shifted in + if bit_ovfl_q then + ser_dat_q <= shift_dat_q; + end if; + + fsm_q <= fsm_s; + + ram_we_n_q <= ram_we_n_s; + ram_ce_n_q <= ram_ce_n_s; + + -- done only settable once + if done_s then + done_q <= '1'; + end if; + + mode_q <= mode_s; + + end if; + end process seq; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Process fsm + -- + -- Purpose: + -- Implements the combinational logic of the RAM loader FSM. + -- + fsm: process (fsm_q, + bit_ovfl_q, + start_q, + addr_q) + begin + -- default assignments + inc_addr_s <= false; + ram_we_n_s <= '1'; + done_s <= false; + fsm_s <= IDLE; + lamp_o <= '1'; + mode_s <= '0'; + + case fsm_q is + when IDLE => + lamp_o <= '0'; + if start_q = '1' then + if bit_ovfl_q then + fsm_s <= WE_ON; + end if; + end if; + + when WE_ON => + ram_we_n_s <= '0'; + fsm_s <= WE_OFF; + + when WE_OFF => + fsm_s <= INC_ADDR1; + + when INC_ADDR1 => + fsm_s <= INC_ADDR2; + + when INC_ADDR2 => + if addr_q = "001111111111111111" then -- load only 64k + fsm_s <= FINISHED; + done_s <= true; + mode_s <= '1'; + else + inc_addr_s <= true; + fsm_s <= IDLE; + end if; + + when FINISHED => + fsm_s <= FINISHED; + lamp_o <= '1'; + mode_s <= '1'; + + when others => + end case; + + end process fsm; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Process ce_gen + -- + -- Purpose: + -- Generates the four CE signals for the external RAM chips. + -- + ce_gen: process (addr_q) + begin + ram_ce_n_s <= (others => '1'); + ram_ce_n_s(to_integer(addr_q(17 downto 16))) <= '0'; + end process ce_gen; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Process start_seq + -- + -- Purpose: + -- Implements the sequential elements clocked with clk_i. + -- + start_seq: process (clk_i, reset_i) + begin + if reset_i = '0' then + start_fsm_q <= WAIT_DETACH; + start_q <= '0'; + enable_q <= false; + + elsif clk_i'event and clk_i = '1' then + start_fsm_q <= start_fsm_s; + + enable_q <= enable_s; + + start_q <= start_s; + + end if; + end process start_seq; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Process start_comb + -- + -- Purpose: + -- Implements the combinational logic of the start FSM. + -- + start_comb: process (start_fsm_q, + detached_i, + done_q, + enable_q, + start_q) + begin + -- default assignments + start_fsm_s <= WAIT_DETACH; + enable_s <= enable_q; + start_s <= start_q; + + case start_fsm_q is + -- Wait for detached_i to become '1' + -- This state is entered/left twice: + -- 1. after reset to start the data download + -- 2. after data download to start the next configuration cycle + when WAIT_DETACH => + if detached_i = '1' then + start_fsm_s <= CHECK_NO_DONE; + enable_s <= true; + start_s <= '1'; + + else + start_fsm_s <= WAIT_DETACH; + end if; + + -- Wait until done_q is '0' + -- This ensures that the FSM stalls when it has started the configuration + -- download. There must be no further action in this case. + when CHECK_NO_DONE => + if done_q = '0' then + start_fsm_s <= WAIT_DONE; + else + start_fsm_s <= CHECK_NO_DONE; + end if; + + -- Wait until done_q is '1' + -- done_q is the signal that the main FSM has finished its work. We + -- need to start the configuration download. + when WAIT_DONE => + if done_q = '1' then + start_fsm_s <= WAIT_DETACH; + enable_s <= false; + start_s <= '0'; + else + start_fsm_s <= WAIT_DONE; + end if; + + when others => + null; + + end case; + + end process start_comb; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Output Mapping + ----------------------------------------------------------------------------- + start_o <= start_q; + mode_o <= mode_q; + done_o <= done_q + when start_q = '1' else + '1'; + ram_addr_o <= std_logic_vector(addr_q(15 downto 0)); + ram_data_b <= ser_dat_q; + ram_oe_no <= '1'; + ram_ce_no <= ram_ce_n_q; + ram_we_no <= ram_we_n_q; + +end rtl; diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_boot-c.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_boot-c.vhd new file mode 100644 index 000000000..6f11ed34b --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_boot-c.vhd @@ -0,0 +1,27 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- +-- $Id: spi_boot-c.vhd,v 1.2 2005/02/18 06:42:11 arniml Exp $ +-- +------------------------------------------------------------------------------- + +configuration spi_boot_rtl_c0 of spi_boot is + + for rtl + + for img_cnt + for img_cnt_b : spi_counter + use configuration work.spi_counter_rtl_c0; + end for; + end for; + + for mmc_cnt + for mmc_cnt_b : spi_counter + use configuration work.spi_counter_rtl_c0; + end for; + end for; + + end for; + +end spi_boot_rtl_c0; diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_boot.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_boot.vhd new file mode 100644 index 000000000..3d2b81da7 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_boot.vhd @@ -0,0 +1,979 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- +-- $Id: spi_boot.vhd,v 1.9 2007/02/25 18:24:12 arniml Exp $ +-- +-- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org) +-- +-- All rights reserved, see COPYING. +-- +-- Redistribution and use in source and synthezised forms, with or without +-- modification, are permitted provided that the following conditions are met: +-- +-- Redistributions of source code must retain the above copyright notice, +-- this list of conditions and the following disclaimer. +-- +-- Redistributions in synthesized form must reproduce the above copyright +-- notice, this list of conditions and the following disclaimer in the +-- documentation and/or other materials provided with the distribution. +-- +-- Neither the name of the author nor the names of other contributors may +-- be used to endorse or promote products derived from this software without +-- specific prior written permission. +-- +-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE +-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +-- POSSIBILITY OF SUCH DAMAGE. +-- +-- Please report bugs to the author, but before you do so, please +-- make sure that this is not a derivative work and that +-- you have the latest version of this file. +-- +-- The latest version of this file can be found at: +-- http://www.opencores.org/projects.cgi/web/spi_boot/overview +-- +------------------------------------------------------------------------------- + +library ieee; +use ieee.std_logic_1164.all; + + +entity spi_boot is + + generic ( + -- width of set selection + width_set_sel_g : integer := 4; + -- width of bit counter: minimum 6, maximum 12 + width_bit_cnt_g : integer := 6; + -- width of image counter: minimum 0, maximum n + width_img_cnt_g : integer := 2; + -- number of bits required to address one image + num_bits_per_img_g : integer := 18; + -- SD specific initialization + sd_init_g : integer := 0; + -- clock divider to reach 400 kHz for MMC compatibility + mmc_compat_clk_div_g : integer := 0; + width_mmc_clk_div_g : integer := 0; + -- active level of reset_i + reset_level_g : integer := 0 + ); + + port ( + -- System Interface ------------------------------------------------------- + clk_i : in std_logic; + reset_i : in std_logic; + set_sel_i : in std_logic_vector(width_set_sel_g-1 downto 0); + -- Card Interface --------------------------------------------------------- + spi_clk_o : out std_logic; + spi_cs_n_o : out std_logic; + spi_data_in_i : in std_logic; + spi_data_out_o : out std_logic; + spi_en_outs_o : out std_logic; + -- FPGA Configuration Interface ------------------------------------------- + start_i : in std_logic; + mode_i : in std_logic; + config_n_o : out std_logic; + detached_o : out std_logic; + cfg_init_n_i : in std_logic; + cfg_done_i : in std_logic; + dat_done_i : in std_logic; + cfg_clk_o : out std_logic; + cfg_dat_o : out std_logic + ); + +end spi_boot; + + +library ieee; +use ieee.numeric_std.all; +use work.spi_boot_pack.all; + +architecture rtl of spi_boot is + + component spi_counter + generic ( + cnt_width_g : integer := 4; + cnt_max_g : integer := 15 + ); + port ( + clk_i : in std_logic; + reset_i : in boolean; + cnt_en_i : in boolean; + cnt_o : out std_logic_vector(cnt_width_g-1 downto 0); + cnt_ovfl_o : out boolean + ); + end component; + + + ----------------------------------------------------------------------------- + -- States of the controller FSM + -- + type ctrl_states_t is (POWER_UP1, POWER_UP2, + CMD0, + CMD1, + CMD55, ACMD41, + CMD16, + WAIT_START, + WAIT_INIT_LOW, WAIT_INIT_HIGH, + CMD18, CMD18_DATA, + CMD12, + INC_IMG_CNT); + -- + signal ctrl_fsm_q, + ctrl_fsm_s : ctrl_states_t; + -- + ----------------------------------------------------------------------------- + + ----------------------------------------------------------------------------- + -- States of the command FSM + -- + type cmd_states_t is (CMD, START, R1, PAUSE); + -- + signal cmd_fsm_q, + cmd_fsm_s : cmd_states_t; + -- + ----------------------------------------------------------------------------- + + subtype op_r is integer range 5 downto 0; + type res_bc_t is (NONE, RES_MAX, RES_47, RES_15, RES_7); + signal bit_cnt_q : unsigned(width_bit_cnt_g-1 downto 0); + signal res_bc_s : res_bc_t; + signal upper_bitcnt_zero_s : boolean; + + signal cfg_dat_q : std_logic; + + signal spi_clk_q : std_logic; + signal spi_clk_rising_q : boolean; + signal spi_clk_falling_q : boolean; + signal spi_dat_q, + spi_dat_s : std_logic; + signal spi_cs_n_q, + spi_cs_n_s : std_logic; + + signal cfg_clk_q : std_logic; + + signal start_q : std_logic; + + signal img_cnt_s : std_logic_vector(width_img_cnt_g downto 0); + signal cnt_en_img_s : boolean; + signal mmc_cnt_ovfl_s : boolean; + signal mmc_compat_s : boolean; + + signal cmd_finished_s : boolean; + + signal r1_result_q : std_logic; + signal done_q, + send_cmd12_q : boolean; + + signal en_outs_s, + en_outs_q : boolean; + + signal reset_s : boolean; + + signal true_s : boolean; + +begin + + true_s <= true; + + reset_s <= true + when (reset_level_g = 1 and reset_i = '1') or + (reset_level_g = 0 and reset_i = '0') else + false; + + ----------------------------------------------------------------------------- + -- Process seq + -- + -- Purpose: + -- Implements several sequential elements. + -- + seq: process (clk_i, reset_s) + + variable bit_cnt_v : unsigned(1 downto 0); + + begin + if reset_s then + -- reset bit counter to 63 for power up + bit_cnt_q <= (others => '0'); + bit_cnt_q(op_r) <= "111111"; + spi_dat_q <= '1'; + spi_cs_n_q <= '1'; + cfg_dat_q <= '1'; + start_q <= '0'; + done_q <= false; + send_cmd12_q <= false; + ctrl_fsm_q <= POWER_UP1; + cmd_fsm_q <= CMD; + r1_result_q <= '0'; + en_outs_q <= false; + + elsif clk_i'event and clk_i = '1' then + -- bit counter control + if spi_clk_rising_q then + case res_bc_s is + when NONE => + bit_cnt_q <= bit_cnt_q - 1; + when RES_MAX => + bit_cnt_q <= (others => '1'); + when RES_47 => + bit_cnt_q <= (others => '0'); + bit_cnt_q(op_r) <= "101111"; + when RES_15 => + bit_cnt_q <= (others => '0'); + bit_cnt_q(op_r) <= "001111"; + when RES_7 => + bit_cnt_q <= (others => '0'); + bit_cnt_q(op_r) <= "000111"; + when others => + bit_cnt_q <= (others => '0'); + end case; + end if; + + -- Card data output register + -- spi_clk_falling_q acts as enable during MMC clock compatibility mode. + -- As soon as this mode is left, the register must start latching. + -- There is no explicit relation to spi_clk_q anymore in normal mode. + -- Instead, spi_dat_s is operated by bit_cnt_q above which changes its + -- value after the rising edge of spi_clk_q. + -- -> spi_dat_q changes upon falling edge of spi_clk_q + if spi_clk_falling_q or not mmc_compat_s then + spi_dat_q <= spi_dat_s; + end if; + + -- config data output register + -- a new value is loaded when config clock is high, + -- i.e. input data is sampled with rising spi_clk + -- while output value changes on falling edge of cfg_clk + if cfg_clk_q = '1' and spi_clk_rising_q then + cfg_dat_q <= spi_data_in_i; + end if; + + -- Controller FSM state + ctrl_fsm_q <= ctrl_fsm_s; + + -- Command FSM state + cmd_fsm_q <= cmd_fsm_s; + + -- CS signal for SPI card + if spi_clk_q = '1' then + spi_cs_n_q <= spi_cs_n_s; + end if; + + -- Extract flags from R1 response + if cmd_fsm_q = R1 then + bit_cnt_v := bit_cnt_q(1 downto 0); + case bit_cnt_v(1 downto 0) is + when "10" => + -- always save "Illegal Command" flag + r1_result_q <= to_X01(spi_data_in_i); + when "00" => + -- overwrite with "Idle State" flag when not in CMD55 + if ctrl_fsm_q /= CMD55 then + r1_result_q <= to_X01(spi_data_in_i); + end if; + when others => + null; + end case; + end if; + + -- Start trigger register for rising edge detection + -- the reset value is '0' thus a rising edge will always be detected + -- after reset even though start_i is tied to '1' + if start_i = '0' then + start_q <= '0'; + elsif ctrl_fsm_q = WAIT_START and cmd_finished_s then + start_q <= start_i; + end if; + + -- Marker for cfg_done and dat_done + if ctrl_fsm_q = CMD18_DATA then + if cfg_done_i = '1' and dat_done_i = '1' then + done_q <= true; + end if; + + if done_q and + (not upper_bitcnt_zero_s or cmd_fsm_q = START) then + -- activate sending of CMD12 when it is safe: + -- * upper bits of bit counter are not zero + -- -> transmission of CMD12 is not running + -- * cmd FSM is in START state + -- -> also no transmission running + send_cmd12_q <= true; + end if; + elsif ctrl_fsm_q = WAIT_START then + -- reset done_q when WAIT_START has been reached + -- this is necessary to let the stop transmission process come to + -- an end without interruption or generation of unwanted cfg_clk_q + done_q <= false; + send_cmd12_q <= false; + end if; + + -- output enable + if spi_clk_rising_q then + en_outs_q <= en_outs_s; + end if; + + end if; + + end process seq; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Process upper_bits + -- + -- Purpose: + -- Detects that the upper bits of the bit counter are zero. + -- Upper bits = n downto 6, i.e. the optional part that is not required for + -- commands but for extension of data blocks. + -- + upper_bits: process (bit_cnt_q) + variable zero_v : boolean; + begin + + zero_v := true; + for i in bit_cnt_q'high downto 6 loop + if bit_cnt_q(i) = '1' then + zero_v := false; + end if; + end loop; + + upper_bitcnt_zero_s <= zero_v; + + end process upper_bits; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Process clk_gen + -- + -- Purpose: + -- Generates clocks for card and FPGA configuration. + -- The card clock is free running with a divide by two of clk_i. + -- The clock for FPGA config has an enable and is stopped on high level. + -- There is a phase shift of half a period between spi_clk and cfg_clk. + -- + clk_gen: process (clk_i, reset_s) + begin + if reset_s then + spi_clk_q <= '0'; + cfg_clk_q <= '1'; + + elsif clk_i'event and clk_i = '1' then + + -- spi_clk_q rises according to the flag + -- it falls with overflow indication + -- the resulting duty cycle is not exactly 50:50, + -- high time is a bit longer + if mmc_compat_s then + -- MMC clock compatibility mode: + -- spi_clk_q rises when flagged by spi_clk_rising_q + if spi_clk_rising_q then + spi_clk_q <= '1'; + elsif mmc_cnt_ovfl_s then + -- upon counter overflow spi_clk_q falls in case it does not rise + spi_clk_q <= '0'; + end if; + else + -- normal mode + -- spi_clk_q follows spi_clk_rising_q + if spi_clk_rising_q then + spi_clk_q <= '1'; + else + spi_clk_q <= '0'; + end if; + end if; + + -- clock for FPGA config must be enabled and follows spi_clk + if ctrl_fsm_q = CMD18_DATA and cmd_fsm_q = CMD and + not done_q then + cfg_clk_q <= spi_clk_q; + else + cfg_clk_q <= '1'; + end if; + + end if; + + end process clk_gen; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Indication flags for rising and falling spi_clk_q. + -- Essential for MMC clock compatibility mode. + ----------------------------------------------------------------------------- + mmc_comap: if mmc_compat_clk_div_g > 0 generate + mmc_compat_sig: process (clk_i, reset_s) + begin + if reset_s then + spi_clk_rising_q <= false; + spi_clk_falling_q <= false; + + elsif clk_i'event and clk_i = '1' then + if mmc_compat_s then + -- MMC clock compatibility mode: + -- spi_clk_rising_q is an impulse right before rising edge of spi_clk_q + -- spi_clk_falling_q is an impulse right before falling edge of spi_clk_q + if mmc_cnt_ovfl_s then + spi_clk_rising_q <= spi_clk_q = '0'; + spi_clk_falling_q <= spi_clk_q = '1'; + else + spi_clk_rising_q <= false; + spi_clk_falling_q <= false; + end if; + else + -- normal mode + spi_clk_rising_q <= not spi_clk_rising_q; + spi_clk_falling_q <= true; + end if; + + end if; + end process mmc_compat_sig; + end generate; + + no_mmc_compat: if mmc_compat_clk_div_g = 0 generate + -- SPI clock rising whenever spi_clk_q is '0' + spi_clk_rising_q <= spi_clk_q = '0'; + -- SPI clock falling whenever spi_clk_q is '1' + spi_clk_falling_q <= spi_clk_q = '1'; + end generate; + + + ----------------------------------------------------------------------------- + -- Process ctrl_fsm + -- + -- Purpose: + -- Implements the controller FSM. + -- + ctrl_fsm: process (ctrl_fsm_q, + cmd_finished_s, r1_result_q, + start_i, start_q, mode_i, + cfg_init_n_i) + + variable mmc_compat_v : boolean; + + begin + -- default assignments + ctrl_fsm_s <= POWER_UP1; + config_n_o <= '1'; + cnt_en_img_s <= false; + spi_cs_n_s <= '0'; + mmc_compat_v := false; + en_outs_s <= true; + + case ctrl_fsm_q is + -- Let card finish power up, step 1 ------------------------------------- + when POWER_UP1 => + mmc_compat_v := true; + spi_cs_n_s <= '1'; + if cmd_finished_s then + ctrl_fsm_s <= POWER_UP2; + else + ctrl_fsm_s <= POWER_UP1; + end if; + + + -- Let card finish power up, step 2 ------------------------------------- + when POWER_UP2 => + mmc_compat_v := true; + if cmd_finished_s then + ctrl_fsm_s <= CMD0; + else + spi_cs_n_s <= '1'; + ctrl_fsm_s <= POWER_UP2; + end if; + + + -- Issue CMD0: GO_IDLE_STATE -------------------------------------------- + when CMD0 => + mmc_compat_v := true; + if cmd_finished_s then + if sd_init_g = 1 then + ctrl_fsm_s <= CMD55; + else + ctrl_fsm_s <= CMD1; + end if; + else + ctrl_fsm_s <= CMD0; + end if; + + + -- Issue CMD55: APP_CMD ------------------------------------------------- + when CMD55 => + if sd_init_g = 1 then + + mmc_compat_v := true; + if cmd_finished_s then + if r1_result_q = '0' then + -- command accepted, it's an SD card + ctrl_fsm_s <= ACMD41; + else + -- command rejected, it's an MMC card + ctrl_fsm_s <= CMD1; + end if; + else + ctrl_fsm_s <= CMD55; + end if; + + end if; + + + -- Issue ACMD41: SEND_OP_COND ------------------------------------------- + when ACMD41 => + if sd_init_g = 1 then + + mmc_compat_v := true; + if cmd_finished_s then + if r1_result_q = '0' then + ctrl_fsm_s <= CMD16; + else + ctrl_fsm_s <= CMD55; + end if; + else + ctrl_fsm_s <= ACMD41; + end if; + + end if; + + + -- Issue CMD1: SEND_OP_COND --------------------------------------------- + when CMD1 => + mmc_compat_v := true; + if cmd_finished_s then + if r1_result_q = '0' then + ctrl_fsm_s <= CMD16; + else + ctrl_fsm_s <= CMD1; + end if; + else + ctrl_fsm_s <= CMD1; + end if; + + + -- Issue CMD16: SET_BLOCKLEN -------------------------------------------- + when CMD16 => + if cmd_finished_s then + ctrl_fsm_s <= WAIT_START; + else + ctrl_fsm_s <= CMD16; + end if; + + + -- Wait for configuration start request --------------------------------- + when WAIT_START => + spi_cs_n_s <= '1'; + + -- detect rising edge of start_i + if start_i = '1' and start_q = '0' then + -- decide which mode is requested + if cmd_finished_s then + if mode_i = '0' then + ctrl_fsm_s <= CMD18; + else + ctrl_fsm_s <= WAIT_INIT_LOW; + end if; + else + en_outs_s <= false; + ctrl_fsm_s <= WAIT_START; + end if; + else + en_outs_s <= false; + ctrl_fsm_s <= WAIT_START; + end if; + + + -- Wait for INIT to become low ------------------------------------------ + when WAIT_INIT_LOW => + spi_cs_n_s <= '1'; + -- activate FPGA configuration + config_n_o <= '0'; + + if cfg_init_n_i = '0' then + ctrl_fsm_s <= WAIT_INIT_HIGH; + else + ctrl_fsm_s <= WAIT_INIT_LOW; + end if; + + + -- Wait for INIT to become high ----------------------------------------- + when WAIT_INIT_HIGH => + spi_cs_n_s <= '1'; + + if cfg_init_n_i = '1' and cmd_finished_s then + ctrl_fsm_s <= CMD18; + else + ctrl_fsm_s <= WAIT_INIT_HIGH; + end if; + + + -- Issue CMD18: READ_MULTIPLE_BLOCKS ------------------------------------ + when CMD18 => + if cmd_finished_s then + ctrl_fsm_s <= CMD18_DATA; + else + ctrl_fsm_s <= CMD18; + end if; + -- + -- receive a data block + when CMD18_DATA => + if cmd_finished_s then + ctrl_fsm_s <= CMD12; + else + ctrl_fsm_s <= CMD18_DATA; + end if; + + + -- Issued CMD12: STOP_TRANSMISSION -------------------------------------- + when CMD12 => + if cmd_finished_s then + ctrl_fsm_s <= INC_IMG_CNT; + else + ctrl_fsm_s <= CMD12; + end if; + + + -- Increment Image Counter ---------------------------------------------- + when INC_IMG_CNT => + spi_cs_n_s <= '1'; + ctrl_fsm_s <= WAIT_START; + cnt_en_img_s <= true; + + + + when others => + null; + + end case; + + -- mmc_compat_s is suppressed if MMC clock compatibility is not required + if mmc_compat_clk_div_g > 0 then + mmc_compat_s <= mmc_compat_v; + else + mmc_compat_s <= false; + end if; + + end process ctrl_fsm; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Process cmd_fsm + -- + -- Purpose: + -- Implements the command FSM. + -- + cmd_fsm: process (spi_clk_rising_q, + spi_data_in_i, + bit_cnt_q, + ctrl_fsm_q, + cmd_fsm_q, + send_cmd12_q) + + variable cnt_zero_v : boolean; + variable spi_data_low_v : boolean; + variable no_startbit_v : boolean; + + begin + -- default assignments + cmd_finished_s <= false; + cmd_fsm_s <= CMD; + res_bc_s <= NONE; + + cnt_zero_v := spi_clk_rising_q and bit_cnt_q = 0; + spi_data_low_v := spi_clk_rising_q and spi_data_in_i = '0'; + + -- these are no real commands thus there will be no startbit + case ctrl_fsm_q is + when POWER_UP1 | POWER_UP2 | + WAIT_START | WAIT_INIT_HIGH | WAIT_INIT_LOW => + no_startbit_v := true; + when others => + no_startbit_v := false; + end case; + + + case cmd_fsm_q is + -- Send the command ----------------------------------------------------- + when CMD => + if cnt_zero_v then + if ctrl_fsm_q /= CMD18_DATA then + -- normal commands including CMD12 require startbit of R1 response + cmd_fsm_s <= START; + else + if not send_cmd12_q then + -- CMD18_DATA needs to read CRC + cmd_fsm_s <= R1; + res_bc_s <= RES_15; + else + -- CMD18_DATA finished, scan for startbit of response + cmd_finished_s <= true; + cmd_fsm_s <= START; + end if; + end if; + else + cmd_fsm_s <= CMD; + end if; + + -- Wait for startbit of response ---------------------------------------- + when START => + -- startbit detection or skip of this check + if no_startbit_v and spi_clk_rising_q then + cmd_fsm_s <= R1; + res_bc_s <= RES_7; + elsif spi_data_low_v then + if ctrl_fsm_q /= CMD18_DATA then + cmd_fsm_s <= R1; + else + -- CMD18_DATA startbit detected, read payload + cmd_fsm_s <= CMD; + res_bc_s <= RES_MAX; + end if; + else + cmd_fsm_s <= START; + res_bc_s <= RES_7; + end if; + + -- Read R1 response ----------------------------------------------------- + when R1 => + if cnt_zero_v then + res_bc_s <= RES_7; + + if not (ctrl_fsm_q = CMD18 or ctrl_fsm_q = CMD18_DATA) then + cmd_fsm_s <= PAUSE; + else + -- CMD18 needs another startbit detection for the data token. + -- CMD18_DATA needs a startbit after having received the CRC, either + -- * next data token + -- * R1 response of CMD12 + cmd_fsm_s <= START; + + if ctrl_fsm_q = CMD18 then + -- CMD18 response received -> advance to CMD18_DATA + cmd_finished_s <= true; + end if; + end if; + else + cmd_fsm_s <= R1; + end if; + + -- PAUSE state -> required for Nrc, card response to host command ------- + when PAUSE => + if cnt_zero_v then + cmd_fsm_s <= CMD; + res_bc_s <= RES_47; + cmd_finished_s <= true; + else + cmd_fsm_s <= PAUSE; + end if; + + when others => + null; + + end case; + + end process cmd_fsm; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Process transmit + -- + -- Purpose: + -- Generates the serial data output values based on the current FSM state + -- + -- The local variable cmd_v is 64 bits wide in contrast to an SPI command + -- with 48 bits. There are two reasons for this: + -- * During "overlaid" sending of CMD12 in FSM state CMD18_DATA, the bit + -- counter will start from 3F on its lowest 6 bits. Therefore, it is + -- necessary to provide all 64 positions in cmd_v. + -- * Reduces logic. + -- + transmit: process (ctrl_fsm_q, + cmd_fsm_q, + bit_cnt_q, + img_cnt_s, + send_cmd12_q, + set_sel_i, + upper_bitcnt_zero_s) + + subtype cmd_r is natural range 47 downto 0; + subtype cmd_t is std_logic_vector(cmd_r); + subtype ext_cmd_t is std_logic_vector(63 downto 0); + -- STCCCCCCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAcccccccS + constant cmd0_c : cmd_t := "010000000000000000000000000000000000000010010101"; + constant cmd1_c : cmd_t := "0100000100000000000000000000000000000000-------1"; + constant cmd12_c : cmd_t := "0100110000000000000000000000000000000000-------1"; + constant cmd16_c : cmd_t := "0101000000000000000000000000000000000000-------1"; + constant cmd18_c : cmd_t := "0101001000000000000000000000000000000000-------1"; + constant cmd55_c : cmd_t := "0111011100000000000000000000000000000000-------1"; + constant acmd41_c : cmd_t := "0110100100000000000000000000000000000000-------1"; + + variable cmd_v : ext_cmd_t; + variable tx_v : boolean; + + begin + -- default assignments + spi_dat_s <= '1'; + cmd_v := (others => '1'); + tx_v := false; + + if cmd_fsm_q = CMD then + case ctrl_fsm_q is + when CMD0 => + cmd_v(cmd_r) := cmd0_c; + tx_v := true; + when CMD1 => + cmd_v(cmd_r) := cmd1_c; + tx_v := true; + when CMD16 => + cmd_v(cmd_r) := cmd16_c; + cmd_v(8 + width_bit_cnt_g-3) := '1'; + tx_v := true; + when CMD18 => + cmd_v(cmd_r) := cmd18_c; + -- insert image counter + cmd_v(8 + num_bits_per_img_g + width_img_cnt_g + downto 8 + num_bits_per_img_g) := img_cnt_s; + -- insert set selection + cmd_v(8 + num_bits_per_img_g + width_img_cnt_g + width_set_sel_g-1 + downto 8 + num_bits_per_img_g + width_img_cnt_g) := set_sel_i; + tx_v := true; + when CMD18_DATA => + cmd_v(cmd_r) := cmd12_c; + + if send_cmd12_q and upper_bitcnt_zero_s then + tx_v := true; + end if; + when CMD55 => + cmd_v(cmd_r) := cmd55_c; + tx_v := true; + when ACMD41 => + cmd_v(cmd_r) := acmd41_c; + tx_v := true; + + when others => + null; + end case; + end if; + + if tx_v then + spi_dat_s <= cmd_v(to_integer(bit_cnt_q(5 downto 0))); + end if; + + end process transmit; + -- + ----------------------------------------------------------------------------- + + + ----------------------------------------------------------------------------- + -- Optional Image Counter + ----------------------------------------------------------------------------- + img_cnt: if width_img_cnt_g > 0 generate + img_cnt_b : spi_counter + generic map ( + cnt_width_g => width_img_cnt_g, + cnt_max_g => 2**width_img_cnt_g - 1 + ) + port map ( + clk_i => clk_i, + reset_i => reset_s, + cnt_en_i => cnt_en_img_s, + cnt_o => img_cnt_s(width_img_cnt_g-1 downto 0), + cnt_ovfl_o => open + ); + img_cnt_s(width_img_cnt_g) <= '0'; + end generate; + + no_img_cnt: if width_img_cnt_g = 0 generate + img_cnt_s <= (others => '0'); + end generate; + + + ----------------------------------------------------------------------------- + -- Optional MMC compatibility counter + ----------------------------------------------------------------------------- + mmc_cnt: if mmc_compat_clk_div_g > 0 generate + mmc_cnt_b : spi_counter + generic map ( + cnt_width_g => width_mmc_clk_div_g, + cnt_max_g => mmc_compat_clk_div_g + ) + port map ( + clk_i => clk_i, + reset_i => reset_s, + cnt_en_i => true_s, + cnt_o => open, + cnt_ovfl_o => mmc_cnt_ovfl_s + ); + end generate; + + no_mmc_cnt: if mmc_compat_clk_div_g = 0 generate + mmc_cnt_ovfl_s <= true; + end generate; + + + ----------------------------------------------------------------------------- + -- Output Mapping + ----------------------------------------------------------------------------- + spi_clk_o <= spi_clk_q; + spi_cs_n_o <= spi_cs_n_q; + spi_data_out_o <= spi_dat_q; + spi_en_outs_o <= '1' + when en_outs_q else + '0'; + cfg_clk_o <= cfg_clk_q; + cfg_dat_o <= cfg_dat_q; + detached_o <= '0' + when en_outs_q else + '1'; + +end rtl; + + +------------------------------------------------------------------------------- +-- File History: +-- +-- $Log: spi_boot.vhd,v $ +-- Revision 1.9 2007/02/25 18:24:12 arniml +-- fix type handling of resets +-- +-- Revision 1.8 2006/09/11 23:03:36 arniml +-- disable outputs with reset +-- +-- Revision 1.7 2005/04/07 20:44:23 arniml +-- add new port detached_o +-- +-- Revision 1.6 2005/03/09 19:48:34 arniml +-- invert level of set_sel input +-- +-- Revision 1.5 2005/03/08 22:07:12 arniml +-- added set selection +-- +-- Revision 1.4 2005/02/18 06:42:08 arniml +-- clarify wording for images +-- +-- Revision 1.3 2005/02/16 18:59:10 arniml +-- include output enable control for SPI outputs +-- +-- Revision 1.2 2005/02/13 17:25:51 arniml +-- major update to fix several problems +-- configuration/data download of multiple sets works now +-- +-- Revision 1.1 2005/02/08 20:41:33 arniml +-- initial check-in +-- +------------------------------------------------------------------------------- diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_boot_pack-p.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_boot_pack-p.vhd new file mode 100644 index 000000000..ac8b544f9 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_boot_pack-p.vhd @@ -0,0 +1,54 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- +-- $Id: spi_boot_pack-p.vhd,v 1.1 2005/02/08 20:41:33 arniml Exp $ +-- +------------------------------------------------------------------------------- + +library ieee; +use ieee.std_logic_1164.all; + +package spi_boot_pack is + + function "=" (a : std_logic; b : integer) return boolean; + +end spi_boot_pack; + +package body spi_boot_pack is + + function "=" (a : std_logic; b : integer) return boolean is + variable result_v : boolean; + begin + result_v := false; + + case a is + when '0' => + if b = 0 then + result_v := true; + end if; + + when '1' => + if b = 1 then + result_v := true; + end if; + + when others => + null; + + end case; + + return result_v; + end; + +end spi_boot_pack; + + +------------------------------------------------------------------------------- +-- File History: +-- +-- $Log: spi_boot_pack-p.vhd,v $ +-- Revision 1.1 2005/02/08 20:41:33 arniml +-- initial check-in +-- +------------------------------------------------------------------------------- diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_counter-c.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_counter-c.vhd new file mode 100644 index 000000000..d81e20db6 --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_counter-c.vhd @@ -0,0 +1,14 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- +-- $Id: spi_counter-c.vhd,v 1.1 2005/02/08 20:41:33 arniml Exp $ +-- +------------------------------------------------------------------------------- + +configuration spi_counter_rtl_c0 of spi_counter is + + for rtl + end for; + +end spi_counter_rtl_c0; diff --git a/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_counter.vhd b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_counter.vhd new file mode 100644 index 000000000..8ec7357ea --- /dev/null +++ b/fpga/usrp2/opencores/spi_boot/rtl/vhdl/spi_counter.vhd @@ -0,0 +1,118 @@ +------------------------------------------------------------------------------- +-- +-- SD/MMC Bootloader +-- Generic counter module +-- +-- $Id: spi_counter.vhd,v 1.2 2007/02/25 18:24:12 arniml Exp $ +-- +-- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org) +-- +-- All rights reserved, see COPYING. +-- +-- Redistribution and use in source and synthezised forms, with or without +-- modification, are permitted provided that the following conditions are met: +-- +-- Redistributions of source code must retain the above copyright notice, +-- this list of conditions and the following disclaimer. +-- +-- Redistributions in synthesized form must reproduce the above copyright +-- notice, this list of conditions and the following disclaimer in the +-- documentation and/or other materials provided with the distribution. +-- +-- Neither the name of the author nor the names of other contributors may +-- be used to endorse or promote products derived from this software without +-- specific prior written permission. +-- +-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE +-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +-- POSSIBILITY OF SUCH DAMAGE. +-- +-- Please report bugs to the author, but before you do so, please +-- make sure that this is not a derivative work and that +-- you have the latest version of this file. +-- +-- The latest version of this file can be found at: +-- http://www.opencores.org/projects.cgi/web/spi_boot/overview +-- +------------------------------------------------------------------------------- + +library ieee; +use ieee.std_logic_1164.all; + + +entity spi_counter is + + generic ( + cnt_width_g : integer := 4; + cnt_max_g : integer := 15 + ); + + port ( + clk_i : in std_logic; + reset_i : in boolean; + cnt_en_i : in boolean; + cnt_o : out std_logic_vector(cnt_width_g-1 downto 0); + cnt_ovfl_o : out boolean + ); + +end spi_counter; + + +library ieee; +use ieee.numeric_std.all; +use work.spi_boot_pack.all; + +architecture rtl of spi_counter is + + signal cnt_q : unsigned(cnt_width_g-1 downto 0); + signal cnt_ovfl_s : boolean; + +begin + + cnt: process (clk_i, reset_i) + begin + if reset_i then + cnt_q <= (others => '0'); + + elsif clk_i'event and clk_i = '1' then + if cnt_en_i then + if not cnt_ovfl_s then + cnt_q <= cnt_q + 1; + else + cnt_q <= (others => '0'); + end if; + end if; + end if; + end process cnt; + + cnt_ovfl_s <= cnt_q = cnt_max_g; + + + ----------------------------------------------------------------------------- + -- Output Mapping + ----------------------------------------------------------------------------- + cnt_ovfl_o <= cnt_ovfl_s; + cnt_o <= std_logic_vector(cnt_q); + +end rtl; + + +------------------------------------------------------------------------------- +-- File History: +-- +-- $Log: spi_counter.vhd,v $ +-- Revision 1.2 2007/02/25 18:24:12 arniml +-- fix type handling of resets +-- +-- Revision 1.1 2005/02/08 20:41:33 arniml +-- initial check-in +-- +------------------------------------------------------------------------------- |