diff options
Diffstat (limited to 'testsuite/synth/issue1911/neorv32_package.vhd')
| -rw-r--r-- | testsuite/synth/issue1911/neorv32_package.vhd | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/testsuite/synth/issue1911/neorv32_package.vhd b/testsuite/synth/issue1911/neorv32_package.vhd new file mode 100644 index 000000000..cb2d9e0bc --- /dev/null +++ b/testsuite/synth/issue1911/neorv32_package.vhd @@ -0,0 +1,119 @@ +-- ################################################################################################# +-- # << NEORV32 - Main VHDL package file >> # +-- # ********************************************************************************************* # +-- # BSD 3-Clause License # +-- # # +-- # Copyright (c) 2021, Stephan Nolting. All rights reserved. # +-- # # +-- # Redistribution and use in source and binary forms, with or without modification, are # +-- # permitted provided that the following conditions are met: # +-- # # +-- # 1. Redistributions of source code must retain the above copyright notice, this list of # +-- # conditions and the following disclaimer. # +-- # # +-- # 2. Redistributions in binary 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. # +-- # # +-- # 3. Neither the name of the copyright holder nor the names of its 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 # +-- # COPYRIGHT HOLDER 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. # +-- # ********************************************************************************************* # +-- # The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting # +-- ################################################################################################# + +library ieee; +use ieee.std_logic_1164.all; +use ieee.numeric_std.all; + +package neorv32_package is + + -- Architecture Configuration ------------------------------------------------------------- + -- ------------------------------------------------------------------------------------------- + -- address space -- + constant ispace_base_c : std_ulogic_vector(31 downto 0) := x"00000000"; -- default instruction memory address space base address + constant dspace_base_c : std_ulogic_vector(31 downto 0) := x"80000000"; -- default data memory address space base address + + -- CPU core -- + constant dedicated_reset_c : boolean := false; -- use dedicated hardware reset value for UNCRITICAL registers (FALSE=reset value is irrelevant (might simplify HW), default; TRUE=defined LOW reset value) + constant cp_timeout_en_c : boolean := false; -- auto-terminate pending co-processor operations after 256 cycles (for debugging only), default = false + + -- "critical" number of implemented PMP regions -- + -- if more PMP regions (> pmp_num_regions_critical_c) are defined, another register stage is automatically inserted into the memory interfaces + -- increasing instruction fetch & data access latency by +1 cycle but also reducing critical path length + constant pmp_num_regions_critical_c : natural := 8; -- default=8 + + -- "response time window" for processor-internal memories and IO devices + constant max_proc_int_response_time_c : natural := 15; -- cycles after which an *unacknowledged* internal bus access will timeout and trigger a bus fault exception (min 2) + + -- jtag tap - identifier -- + constant jtag_tap_idcode_version_c : std_ulogic_vector(03 downto 0) := x"0"; -- version + constant jtag_tap_idcode_partid_c : std_ulogic_vector(15 downto 0) := x"cafe"; -- part number + constant jtag_tap_idcode_manid_c : std_ulogic_vector(10 downto 0) := "00000000000"; -- manufacturer id + + -- Architecture Constants (do not modify!) ------------------------------------------------ + -- ------------------------------------------------------------------------------------------- + constant data_width_c : natural := 32; -- native data path width - do not change! + constant hw_version_c : std_ulogic_vector(31 downto 0) := x"01060306"; -- no touchy! + constant archid_c : natural := 19; -- official NEORV32 architecture ID - hands off! + + -- External Interface Types --------------------------------------------------------------- + -- ------------------------------------------------------------------------------------------- + type sdata_8x32_t is array (0 to 7) of std_ulogic_vector(31 downto 0); + type sdata_8x32r_t is array (0 to 7) of std_logic_vector(31 downto 0); -- resolved type + + -- Internal Interface Types --------------------------------------------------------------- + -- ------------------------------------------------------------------------------------------- + type pmp_ctrl_if_t is array (0 to 63) of std_ulogic_vector(07 downto 0); + type pmp_addr_if_t is array (0 to 63) of std_ulogic_vector(33 downto 0); + type cp_data_if_t is array (0 to 3) of std_ulogic_vector(data_width_c-1 downto 0); + + -- Internal Memory Types Configuration Types ---------------------------------------------- + -- ------------------------------------------------------------------------------------------- + type mem32_t is array (natural range <>) of std_ulogic_vector(31 downto 0); -- memory with 32-bit entries + type mem8_t is array (natural range <>) of std_ulogic_vector(07 downto 0); -- memory with 8-bit entries + + -- Helper Functions ----------------------------------------------------------------------- + -- ------------------------------------------------------------------------------------------- + function index_size_f(input : natural) return natural; + function is_power_of_two_f(input : natural) return boolean; + +end neorv32_package; + +package body neorv32_package is + + -- Function: Minimal required number of bits to represent input number -------------------- + -- ------------------------------------------------------------------------------------------- + function index_size_f(input : natural) return natural is + begin + for i in 0 to natural'high loop + if (2**i >= input) then + return i; + end if; + end loop; -- i + return 0; + end function index_size_f; + + -- Function: Test if input number is a power of two --------------------------------------- + -- ------------------------------------------------------------------------------------------- + function is_power_of_two_f(input : natural) return boolean is + begin + if (input = 1) then -- 2^0 + return true; + elsif ((input / 2) /= 0) and ((input mod 2) = 0) then + return true; + else + return false; + end if; + end function is_power_of_two_f; +end neorv32_package; |