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34 commits

Author SHA1 Message Date
Olof Kindgren
e4b773c17b Syntax fixes 2021-01-18 22:47:28 +01:00
Olof Kindgren
aa16bc40b6 Move ibus_cyc handling to serv_state 2020-12-02 16:19:34 +01:00
Olof Kindgren
fd79a2ea0c Use cnt0 in serv_ctrl 2020-12-01 22:40:52 +01:00
Olof Kindgren
bbe3e56ab2 Decouple ibus_cyc and ibus_ack 2020-11-30 23:13:11 +01:00
Olof Kindgren
90ce4ff1af Syntax and reset fixes for ModelSim 2020-11-10 15:16:19 +01:00
Olof Kindgren
c1b8471678 Add reset_strategy parameter 
The reset_strategy parameter controls how much reset to apply to
SERV. It can be set to MINI for the default behaviour, or NONE to
only apply reset where absolutely needed and rely on POR to clear
FFs
 2020-11-10 15:16:19 +01:00
Olof Kindgren
25e86fdd3c Small optimization of instruction fetching logic 2020-08-26 16:45:40 +02:00
Olof Kindgren
9606e3503d Inline shift_reg 2020-05-26 22:43:23 +02:00
Olof Kindgren
1d311edb7d Make counter internal in serv_state 2020-04-15 10:29:50 +02:00
Olof Kindgren
b48b02b8df Add parameter to disable CSR/interrupts 
Also disables timer in servant if CSR/interrupts are disabled
 2020-03-02 16:17:26 +01:00
Olof Kindgren
afb7e641dd Inline adders 2020-02-19 11:00:55 +01:00
Olof Kindgren
36746d3890 Remove unused signals 2020-02-17 23:01:49 +01:00
Olof Kindgren
75decc8251 Bring back old immediate decoder 
This was originally thrown out since it was slow and cost too much
resources. Due to other changes in the core, it is now cheaper
than the other one
 2019-10-29 21:54:22 +01:00
Olof Kindgren
7425128dd8 Pass imm offsets through bufreg 2019-09-13 23:30:46 +02:00
Olof Kindgren
e107627e71 Reduce warnings 2019-06-24 15:22:08 +02:00
Olof Kindgren
bad78b0bd7 Declare wires before use 2019-06-24 13:18:34 +02:00
Olof Kindgren
b0a062ae21 Speed up instruction fetching 2019-04-12 08:15:08 +02:00
Olof Kindgren
9a97c535bd Use ring buffer for counter LSBs 2019-01-15 08:00:32 +01:00
Olof Kindgren
3a68cc0e77 Improve critical path in ctrl 2019-01-15 08:00:32 +01:00
Olof Kindgren
3f5c25d8f2 Silence LSE warnings 2018-12-12 21:20:44 +01:00
Olof Kindgren
09bb05071e Fix bugs and missing resets to pass formal 2018-12-11 22:05:32 +01:00
Olof Kindgren
a974320f46 Further optimizations 2018-11-23 21:26:49 +01:00
Olof Kindgren
fa8def6e7a Rewrite immediate decoding 2018-11-22 13:02:51 +01:00
Olof Kindgren
9df2a0060b Use custom interconnect. Runs on hw 2018-11-21 13:15:33 +01:00
Olof Kindgren
7666ac4092 synthesized netlist works 2018-11-18 13:05:38 +01:00
Olof Kindgren
f66f82a57a Add explicit wire defs to ports 2018-11-17 21:30:03 +01:00
Olof Kindgren
34fc93ba09 Fix misaligned jumps 2018-11-15 12:50:40 +01:00
Olof Kindgren
aa0e3aa77e Handle misaligned jal 2018-11-15 08:49:29 +01:00
Olof Kindgren
a92c933af1 csr, verilator, traps 2018-11-14 12:16:20 +01:00
Olof Kindgren
3c98d35766 Change to wb interface 2018-11-09 21:26:13 +01:00
Olof Kindgren
d4bbe17e78 jalr, blt 2018-10-31 14:51:28 +01:00
Olof Kindgren
d4b2697761 auipc, sub 2018-10-30 23:33:28 +01:00
Olof Kindgren
c2030a95fd jal, addi, lui, lb 2018-10-26 22:52:39 +02:00
Olof Kindgren
e10c41be8d Initial commit 2018-10-23 23:45:41 +02:00