diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/rtl/keywrap_core.v | 78 |
1 files changed, 65 insertions, 13 deletions
diff --git a/src/rtl/keywrap_core.v b/src/rtl/keywrap_core.v index 9c2fa50..c517757 100644 --- a/src/rtl/keywrap_core.v +++ b/src/rtl/keywrap_core.v @@ -80,17 +80,21 @@ module keywrap_core #(parameter MEM_BITS = 11) //---------------------------------------------------------------- localparam MAX_ITERATIONS = 6 - 1; - localparam CTRL_IDLE = 4'h0; - localparam CTRL_INIT_WAIT = 4'h1; - localparam CTRL_NEXT_WSTART = 4'h2; - localparam CTRL_NEXT_USTART = 4'h3; - localparam CTRL_NEXT_LOOP0 = 4'h4; - localparam CTRL_NEXT_LOOP = 4'h5; - localparam CTRL_NEXT_WAIT = 4'h6; - localparam CTRL_NEXT_UPDATE = 4'h7; - localparam CTRL_NEXT_WCHECK = 4'h8; - localparam CTRL_NEXT_UCHECK = 4'h9; - localparam CTRL_NEXT_FINALIZE = 4'ha; + localparam CTRL_IDLE = 5'h0; + localparam CTRL_INIT_WAIT = 5'h1; + localparam CTRL_NEXT_WSTART = 5'h2; + localparam CTRL_NEXT_USTART = 5'h3; + localparam CTRL_NEXT_LOOP0 = 5'h4; + localparam CTRL_NEXT_LOOP = 5'h5; + localparam CTRL_NEXT_WAIT = 5'h6; + localparam CTRL_NEXT_UPDATE = 5'h7; + localparam CTRL_NEXT_WCHECK = 5'h8; + localparam CTRL_NEXT_UCHECK = 5'h9; + localparam CTRL_NEXT_FINALIZE = 5'ha; + localparam CTRL_READ_START = 5'h10; + localparam CTRL_READ_END = 5'h11; + localparam CTRL_WRITE_START = 5'h18; + localparam CTRL_WRITE_END = 5'h19; //---------------------------------------------------------------- @@ -125,8 +129,8 @@ module keywrap_core #(parameter MEM_BITS = 11) reg iteration_ctr_set; reg iteration_ctr_rst; - reg [3 : 0] keywrap_core_ctrl_reg; - reg [3 : 0] keywrap_core_ctrl_new; + reg [4 : 0] keywrap_core_ctrl_reg; + reg [4 : 0] keywrap_core_ctrl_new; reg keywrap_core_ctrl_we; @@ -423,6 +427,22 @@ module keywrap_core #(parameter MEM_BITS = 11) keywrap_core_ctrl_new = CTRL_NEXT_USTART; keywrap_core_ctrl_we = 1'h1; end + + if (read) + begin + ready_new = 1'h0; + ready_we = 1'h1; + keywrap_core_ctrl_new = CTRL_READ_START; + keywrap_core_ctrl_we = 1'h1; + end + + if (write) + begin + ready_new = 1'h0; + ready_we = 1'h1; + keywrap_core_ctrl_new = CTRL_WRITE_START; + keywrap_core_ctrl_we = 1'h1; + end end @@ -553,6 +573,38 @@ module keywrap_core #(parameter MEM_BITS = 11) keywrap_core_ctrl_we = 1'h1; end + + CTRL_READ_START: + begin + keywrap_core_ctrl_new = CTRL_READ_END; + keywrap_core_ctrl_we = 1'h1; + end + + + CTRL_READ_END: + begin + ready_new = 1'h1; + ready_we = 1'h1; + keywrap_core_ctrl_new = CTRL_IDLE; + keywrap_core_ctrl_we = 1'h1; + end + + + CTRL_WRITE_START: + begin + keywrap_core_ctrl_new = CTRL_WRITE_END; + keywrap_core_ctrl_we = 1'h1; + end + + + CTRL_WRITE_END: + begin + ready_new = 1'h1; + ready_we = 1'h1; + keywrap_core_ctrl_new = CTRL_IDLE; + keywrap_core_ctrl_we = 1'h1; + end + default: begin |