diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/rtl/keywrap_core.v | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/rtl/keywrap_core.v b/src/rtl/keywrap_core.v index c517757..9ae1e75 100644 --- a/src/rtl/keywrap_core.v +++ b/src/rtl/keywrap_core.v @@ -96,6 +96,21 @@ module keywrap_core #(parameter MEM_BITS = 11) localparam CTRL_WRITE_START = 5'h18; localparam CTRL_WRITE_END = 5'h19; + // API for mkm used by the core. + localparam MKM_ADDR_CTRL = 8'h08; + localparam MKM_CTRL_READ_BIT = 0; + localparam MKM_CTRL_WRITE_BIT = 1; + localparam MKM_ADDR_STATUS = 8'h09; + localparam MKM_STATUS_READY_BIT = 0; + localparam MKM_STATUS_VALID_BIT = 1; + localparam MKM_ADDR_SCLK_DIV = 8'h0a; + localparam MKM_ADDR_EMEM_ADDR = 8'h10; + localparam MKM_ADDR_EMEM_DATA = 8'h20; + + // Addresses for storage in the mkm + localparam MKM_STATUS_WORD = 8'h00; + localparam MKM_KEY_BASE_WORD = 8'h04; + //---------------------------------------------------------------- // Registers and memories including control signals. @@ -129,6 +144,17 @@ module keywrap_core #(parameter MEM_BITS = 11) reg iteration_ctr_set; reg iteration_ctr_rst; + reg [31 : 0] core_key [0 : 7]; + reg core_key_we; + + reg [2 : 0] mkm_word_ctr_reg; + reg [2 : 0] mkm_word_ctr_new; + reg mkm_word_ctr_we; + + reg [7 : 0] mkm_addr_reg; + reg [7 : 0] mkm_addr_new; + reg mkm_addr_we; + reg [4 : 0] keywrap_core_ctrl_reg; reg [4 : 0] keywrap_core_ctrl_new; reg keywrap_core_ctrl_we; @@ -226,13 +252,20 @@ module keywrap_core #(parameter MEM_BITS = 11) //---------------------------------------------------------------- always @ (posedge clk or negedge reset_n) begin: reg_update + integer i; + if (!reset_n) begin + for (i = 0 ; i < 8 ; i = i + 1) + core_key[i] <= 32'h0; + a_reg <= 64'h0; ready_reg <= 1'h1; valid_reg <= 1'h1; block_ctr_reg <= {(MEM_BITS - 1){1'h0}}; iteration_ctr_reg <= 3'h0; + mkm_word_ctr_reg <= 3'h0; + mkm_addr_reg <= 8'h0; keywrap_core_ctrl_reg <= CTRL_IDLE; end |