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platform: Add OpenPiton platform support

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OpenPiton is a research platform from Princeton University [1].

"OpenPiton is the world's first open source, general purpose,
multithreaded manycore processor. It is a tiled manycore
framework scalable from one to 1/2 billion cores."

Add OpenSBI support for OpenPiton. As it is based on ariane core,
it reuses the platform code from arine project.

[1]. https://github.com/PrincetonUniversity/openpiton

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Atish Patra
2020-03-23 12:48:56 -07:00
committed by Anup Patel
parent ed265b4498
commit fb84879e66
6 changed files with 280 additions and 0 deletions
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35
platform/fpga/openpiton/config.mk Normal file
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#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2020 Western Digital Corporation or its affiliates.
#
#for more infos, check out /platform/template/config.mk
PLATFORM_RISCV_XLEN = 64
# Blobs to build
FW_TEXT_START=0x80000000
FW_JUMP=n
ifeq ($(PLATFORM_RISCV_XLEN), 32)
# This needs to be 4MB aligned for 32-bit support
FW_JUMP_ADDR=0x80400000
else
# This needs to be 2MB aligned for 64-bit support
FW_JUMP_ADDR=0x80200000
endif
FW_JUMP_FDT_ADDR=0x82200000
# Firmware with payload configuration.
FW_PAYLOAD=y
ifeq ($(PLATFORM_RISCV_XLEN), 32)
# This needs to be 4MB aligned for 32-bit support
FW_PAYLOAD_OFFSET=0x400000
else
# This needs to be 2MB aligned for 64-bit support
FW_PAYLOAD_OFFSET=0x200000
endif
FW_PAYLOAD_FDT_ADDR=0x82200000
FW_PAYLOAD_ALIGN=0x1000