microwatt

Commit Graph

Author	SHA1	Message	Date
Benjamin Herrenschmidt	573b6b4bc4	soc: Rework interconnect This changes the SoC interconnect such that the main 64-bit wishbone out of the processor is first split between only 3 slaves (BRAM, DRAM and a general "IO" bus) instead of all the slaves in the SoC. The IO bus leg is then latched and down-converted to 32 bits data width, before going through a second address decoder for the various IO devices. This significantly reduces routing and timing pressure on the main bus, allowing to get rid of frequent timing violations when synthetizing on small'ish FPGAs such as the Artix-7 35T found on the original Arty board. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	6 years ago
Benjamin Herrenschmidt	a87b86e54f	console: Replace putstr with puts It makes things a bit more standard and a bit nicer to read without all those strlen(). Also console.c takes care of adding the carriage returns before the linefeeds. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	6 years ago
Michael Neuling	0076f8bf1d	XICS test case Checks interrupt masking and priorities. Adds to `make test_xics` which is run in `make check` also. Signed-off-by: Michael Neuling <mikey@neuling.org>	6 years ago

Author

SHA1

Message

Date

Benjamin Herrenschmidt

573b6b4bc4

soc: Rework interconnect

This changes the SoC interconnect such that the main 64-bit wishbone out
of the processor is first split between only 3 slaves (BRAM, DRAM and a
general "IO" bus) instead of all the slaves in the SoC.

The IO bus leg is then latched and down-converted to 32 bits data width,
before going through a second address decoder for the various IO devices.

This significantly reduces routing and timing pressure on the main bus,
allowing to get rid of frequent timing violations when synthetizing on
small'ish FPGAs such as the Artix-7 35T found on the original Arty board.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Benjamin Herrenschmidt

a87b86e54f

console: Replace putstr with puts

It makes things a bit more standard and a bit nicer to read
without all those strlen(). Also console.c takes care of adding
the carriage returns before the linefeeds.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Michael Neuling

0076f8bf1d

XICS test case

Checks interrupt masking and priorities.

Adds to `make test_xics` which is run in `make check` also.

Signed-off-by: Michael Neuling <mikey@neuling.org>

3 Commits (f9f18906a3039c9dc773c85adc2d9d144a83030c)