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antonblanchard.microwatt/fpga
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Paul Mackerras 7bc7f335f1 Implement CTRL register 
The CTRL register has a single bit called RUN.  It has some unusual
behaviours:

- It can only be written via SPR number 152, which is privileged
- It can only be read via SPR number 136, which is non-privileged
- Reading in problem state (user mode) returns the RUN bit in bit 0,
  but reading in privileged state (hypervisor mode) returns the RUN
  bit in bits 0 and 15.
- Reading SPR 152 in problem state causes a HEAI (illegal instruction)
  interrupt, but reading in privileged state is a no-op; this is the
  same as for an unimplemented SPR.

The RUN bit goes to the PMU and is also plumbed out to drive a LED on
the Arty board.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2024-12-20 20:32:30 +11:00
..
acorn-cle-215.xdc
acorn: Add support for the Acorn CLE 215+
2020-08-07 15:42:07 +10:00
antmicro_artix_dc_scm.xdc
antmicro-artix-dc-scm: Add Ethernet pins
2022-08-31 18:36:26 +09:30
arty_a7.xdc
arty a7: Fix build error with Vivado (#429)
2024-04-10 19:09:02 +10:00
clk_gen_bypass.vhd
Fix clk_gen_bypass
2019-10-13 14:41:53 +11:00
clk_gen_ecp5.vhd
ECP5: Adjust PLL constants so the PLL lock indication works
2021-10-16 20:14:12 +11:00
clk_gen_mcmm.vhd
Fix some whitespace issues
2021-08-09 11:57:00 +10:00
clk_gen_plle2.vhd
fpga/clk_gen_plle2: Add support for 50Mhz->100Mhz
2021-09-25 18:18:32 +10:00
cmod_a7-35.xdc
Remove -add from xdc files
2021-08-09 13:30:26 +10:00
firmware.hex
Add a few more FPGA related files
2019-08-23 16:23:53 +10:00
fpga-random.vhdl
Add random number generator and implement the darn instruction
2020-08-06 11:31:13 +10:00
fpga-random.xdc
Add random number generator and implement the darn instruction
2020-08-06 11:31:13 +10:00
genesys2.xdc
Remove -waveform from xdc files
2021-08-09 13:30:26 +10:00
hello_world.hex
hello_world: Use new headers and frequency from syscon
2020-05-08 21:06:16 +10:00
LICENSE
Initial import of microwatt
2019-08-22 16:46:13 +10:00
main_bram.vhdl
Rename 'do' signal to avoid verilator System Verilog warning
2021-08-13 13:52:51 +10:00
nexys_a7.xdc
Remove -add from xdc files
2021-08-09 13:30:26 +10:00
nexys-video.xdc
litesdcard: Add Nexys Video support
2021-08-10 14:08:22 +10:00
pp_fifo.vhd
pp_fifo: Fix full fifo losing all data on simultaneous push & pop
2020-05-15 20:49:09 +10:00
pp_soc_uart.vhd
uart: Remove combinational loops on ack and stall signal
2020-06-13 11:38:34 +10:00
pp_utilities.vhd
Initial import of microwatt
2019-08-22 16:46:13 +10:00
soc_reset_tb.vhdl
Exit cleanly from testbench on success
2020-05-20 16:07:13 +10:00
soc_reset.vhdl
soc_reset: Use counters, add synchronizers
2020-05-16 12:42:58 +10:00
top-acorn-cle-215.vhdl
Move alt_reset to syscon
2022-10-31 14:41:15 +08:00
top-antmicro-artix-dc-scm.vhdl
Move alt_reset to syscon
2022-10-31 14:41:15 +08:00
top-arty.vhdl
Implement CTRL register
2024-12-20 20:32:30 +11:00
top-ecpix5.vhdl
ECPIX-5: Add liteeth support
2024-04-09 14:22:01 +10:00
top-generic.vhdl
Remove option for "short" 16x16 bit multiplier
2022-08-10 11:27:45 +10:00
top-genesys2.vhdl
Move alt_reset to syscon
2022-10-31 14:41:15 +08:00
top-nexys-video.vhdl
liteeth: Regenerate from current upstream litex
2024-04-06 19:14:50 +11:00
top-orangecrab0.2.vhdl
Move alt_reset to syscon
2022-10-31 14:41:15 +08:00
top-wukong-v2.vhdl
liteeth: Regenerate from current upstream litex
2024-04-06 19:14:50 +11:00
wukong-v2.xdc
Add support for QMTech Wukong v2 board
2021-09-25 18:18:32 +10:00