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-rw-r--r--src/rtl/sha512_core.v33
1 files changed, 16 insertions, 17 deletions
diff --git a/src/rtl/sha512_core.v b/src/rtl/sha512_core.v
index 1b50a6f..43ece2b 100644
--- a/src/rtl/sha512_core.v
+++ b/src/rtl/sha512_core.v
@@ -82,8 +82,8 @@ module sha512_core(
parameter SHA512_ROUNDS = 79;
parameter CTRL_IDLE = 0;
- parameter CTRL_ROUNDS1 = 1;
- parameter CTRL_ROUNDS2 = 2;
+ parameter CTRL_T1_T2 = 1;
+ parameter CTRL_ROUNDS = 2;
parameter CTRL_DONE = 3;
@@ -110,10 +110,9 @@ module sha512_core(
reg [63 : 0] t1_reg;
reg [63 : 0] t1_new;
- reg t1_we;
reg [63 : 0] t2_reg;
reg [63 : 0] t2_new;
- reg t2_we;
+ reg t1_t2_we;
reg [63 : 0] H0_reg;
reg [63 : 0] H0_new;
@@ -265,11 +264,11 @@ module sha512_core(
end
else
begin
- if (t1_we)
- t1_reg <= t1_new;
-
- if (t2_we)
- t2_reg <= t2_new;
+ if (t1_t2_we)
+ begin
+ t1_reg <= t1_new;
+ t2_reg <= t2_new;
+ end
if (a_h_we)
begin
@@ -579,8 +578,7 @@ module sha512_core(
state_init = 0;
state_update = 0;
- t1_we = 1;
- t2_we = 1;
+ t1_t2_we = 0;
first_block = 0;
ready_flag = 0;
@@ -616,7 +614,7 @@ module sha512_core(
round_ctr_rst = 1;
digest_valid_new = 0;
digest_valid_we = 1;
- sha512_ctrl_new = CTRL_ROUNDS1;
+ sha512_ctrl_new = CTRL_T1_T2;
sha512_ctrl_we = 1;
end
@@ -628,20 +626,21 @@ module sha512_core(
round_ctr_rst = 1;
digest_valid_new = 0;
digest_valid_we = 1;
- sha512_ctrl_new = CTRL_ROUNDS1;
+ sha512_ctrl_new = CTRL_T1_T2;
sha512_ctrl_we = 1;
end
end
- CTRL_ROUNDS1:
+ CTRL_T1_T2:
begin
- sha512_ctrl_new = CTRL_ROUNDS2;
+ t1_t2_we = 1;
+ sha512_ctrl_new = CTRL_ROUNDS;
sha512_ctrl_we = 1;
end
- CTRL_ROUNDS2:
+ CTRL_ROUNDS:
begin
w_next = 1;
state_update = 1;
@@ -664,7 +663,7 @@ module sha512_core(
w_init = 1;
state_init = 1;
round_ctr_rst = 1;
- sha512_ctrl_new = CTRL_ROUNDS1;
+ sha512_ctrl_new = CTRL_T1_T2;
sha512_ctrl_we = 1;
end
else