Initial commit

2024-02-23 13:01:05 +00:00
commit d212040c30
1914 changed files with 1290006 additions and 0 deletions
--- a/Libs/AhbLite/hdl/ahbLite_pkg.vhd
+++ b/Libs/AhbLite/hdl/ahbLite_pkg.vhd
@@ -0,0 +1,59 @@
+LIBRARY ieee;
+  USE ieee.std_logic_1164.all;
+
+PACKAGE ahbLite IS
+  ------------------------------------------------------------------------------
+                                                         -- bus components sizes
+  constant ahbAddressBitNb  : positive := 16;
+  constant ahbDataBitNb     : positive := 16;
+  constant ahbSlaveNb       : positive := 16;
+
+  constant ahbTransBitNb    : positive := 2;
+  constant ahbSizeBitNb     : positive := 1;
+  constant ahbBurstBitNb    : positive := 3;
+  constant ahbProtBitNb     : positive := 4;
+
+  ------------------------------------------------------------------------------
+                                                         -- bus data vector type
+  subtype ahbDataType is std_logic_vector(ahbDataBitNb-1 downto 0);
+  type ahbDataVector is array(1 to ahbSlaveNb) of ahbDataType;
+
+  ------------------------------------------------------------------------------
+                                                              -- address decoder
+  type ahbMemoryLocationType is
+    record
+      baseAddress: natural;
+      addressMask: natural;
+    end record;
+  type ahbMemoryLocationVector is array(1 to ahbSlaveNb) of ahbMemoryLocationType;
+
+  ------------------------------------------------------------------------------
+                                                                  -- bus signals
+  subtype transferType is std_ulogic_vector(ahbTransBitNb-1 downto 0);
+  constant transIdle  : transferType := "00";
+  constant transBusy  : transferType := "01";
+  constant transNonSeq: transferType := "10";
+  constant transSeq   : transferType := "11";
+
+  subtype transferSizeType is std_ulogic_vector(ahbSizeBitNb-1 downto 0);
+  constant size8   : transferSizeType := "0";
+  constant size16  : transferSizeType := "1";
+
+  subtype burstType is std_ulogic_vector(ahbBurstBitNb-1 downto 0);
+  constant burstSingle : burstType := "000";
+  constant burstIncr   : burstType := "001";
+  constant burstWrap4  : burstType := "010";
+  constant burstIncr4  : burstType := "011";
+  constant burstWrap8  : burstType := "100";
+  constant burstIncr8  : burstType := "101";
+  constant burstWrap16 : burstType := "110";
+  constant burstIncr16 : burstType := "111";
+
+  subtype protectionType is std_ulogic_vector(ahbProtBitNb-1 downto 0);
+  constant protDefault : protectionType := "0011";
+
+  ------------------------------------------------------------------------------
+                                                                         -- log2
+  function addressBitNb (addressNb : natural) return natural;
+
+END ahbLite;