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[/] [potato/] [trunk/] - Rev 66

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Rev Log message Author Age Path
66 Change UART status register to include recv buffer empty

This replaces bit 0 in the status register, previously used
for recv buffer _not_ empty, with a bit indicating if the
recv buffer _is_ empty.		 skordal 3101d 10h /potato/trunk/
65 Update platform headers and add cache control commands

Cache control is currently no-ops on Potato.		 skordal 3167d 17h /potato/trunk/
64 Add display enable support for the 7-seg module skordal 3167d 17h /potato/trunk/
63 Upgrade makefiles for use with the upgraded toolchain skordal 3170d 17h /potato/trunk/
62 Add a couple of missing signals to a sensitivity list skordal 3198d 18h /potato/trunk/
61 Add 7-segment display controller to the Potato SoC skordal 3199d 22h /potato/trunk/
60 Remove out-of-date comment skordal 3213d 14h /potato/trunk/
58 Merge branch new-privileged-isa (r48-r57) into trunk

This adds support for the newly published supervisor extensions
version 1.7. In addition, a processor datasheet has been added
and the timer_clk signal has been properly connected in the
example design and the SoC testbench.		 skordal 3233d 18h /potato/trunk/
45 Merge branch cache-playground (r23-r30 and r34-r44) into trunk

This primarily adds the following features the the processor:
- A direct-mapped instruction cache with configurable cache line width and
number of cache lines.
- Various bug fixes for bugs that appeared when the processor could run
instructions at full speed but had to stall for data.
- A "Hello World" test application.		 skordal 3265d 13h /potato/trunk/
36 Ensure correct read of CSR after stall skordal 3265d 15h /potato/trunk/
35 Prevent jumping/branching when stalling skordal 3265d 15h /potato/trunk/
34 Prevent flushing the pipeline if it is stalling skordal 3265d 15h /potato/trunk/
28 Add rudimentary User's manual skordal 3279d 12h /potato/trunk/
26 Prevent exceptions from being taken while stalling

Jumping to an exception handler while stalling and waiting for a load/store
instruction to finish can cause undefined results from the load/store
instruction. This actually fixes the issue mentioned in revision r20.		 skordal 3279d 17h /potato/trunk/
24 Remove unused STRINGIFY macros skordal 3282d 10h /potato/trunk/
22 Fix the potato_get_badvaddr() macro skordal 3282d 11h /potato/trunk/
21 Upgrade the example design to use a 60 MHz system clock skordal 3282d 11h /potato/trunk/
20 Fix SHA256 benchmark crash by storing all registers on exception handler entry

This problem will disappear when the processor is updated to conform to the
new supervisor specification, which will allow us to use a compiler that
conforms to the new "official" ABI.		 skordal 3282d 11h /potato/trunk/
19 SHA256 benchmark: allow compiler to inline at will skordal 3282d 11h /potato/trunk/
18 instr_misalign_check: add do_jump to sensitivity list skordal 3284d 11h /potato/trunk/
17 Improve detection of unaligned instructions skordal 3288d 18h /potato/trunk/
16 Correct grammar in source code comment skordal 3288d 18h /potato/trunk/
15 SHA256 benchmark: fix Makefile syntax error skordal 3295d 11h /potato/trunk/
14 Improve detection of invalid instructions skordal 3295d 12h /potato/trunk/
13 Add SHA256 benchmark code skordal 3295d 16h /potato/trunk/
12 Update example design with correct bug-report URL and testbenches skordal 3295d 19h /potato/trunk/
11 Correct FIFO file header skordal 3295d 19h /potato/trunk/
10 Add missing FIFO module skordal 3300d 13h /potato/trunk/
9 Remove dependency on a non-existent target in the Makefile skordal 3300d 13h /potato/trunk/
8 Clarify instruction ROM naming in the example design README skordal 3307d 15h /potato/trunk/

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