77e36d1acc
This provides an example of Asymmetric Multiprocessing (AMP). The master from Linux sends pings that this NuttX echoes back. The system uses RPMsg from OpenAMP. The Inter-Hart Communication module is present in the vendor's software stack with the tag "2021.11". The software is present on github at the polarfire-soc project. The following conditions must be met: 1. FPGA programmed with 2021.11 software 2. HSS (Vendor bootloader) with 2021.11 software 3. U-boot and Linux kernel from 2011.11 software Currently the IHC works as a slave only on the hart number 4. On the NuttX side, this patch uses rptun that incorporates rpmsg and virtio. If it used only rpmsg and virtio, the future maintenance would likely be much heavier. Using rptun also simplifies many things. Upon success, the master side from Linux may issue an example test: root@icicle-kit-es-amp:/opt/microchip/amp/rpmsg-pingpong# ./rpmsg-pingpong However, the rpmsg-pingpong.c (compiled on target with gcc), may need to be modified as seen below to match the device id: - char *rpmsg_dev="virtio0.rpmsg-amp-demo-channel.-1.0"; + char *rpmsg_dev="virtio0.rpmsg-amp-demo-channel.-1.1024"; This work uses a separate linker script. Due to a bug yet unknown to date, a small NuttX, when loaded by the vendor HSS bootloader, will cause the Linux kernel to hang at boot. Thus, the binary size is increased with a section 'filler_area' whose only purpose is to increase the image size so that the Linux kernel will boot up. Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
87 lines
2.9 KiB
Plaintext
Executable File
87 lines
2.9 KiB
Plaintext
Executable File
############################################################################
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# boards/risc-v/mpfs/icicle/scripts/Make.defs
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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include $(TOPDIR)/.config
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include $(TOPDIR)/tools/Config.mk
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include $(TOPDIR)/tools/mpfs/Config.mk
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include $(TOPDIR)/arch/risc-v/src/common/Toolchain.defs
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LDMEMORY =
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ifeq ($(CONFIG_MPFS_BOOTLOADER),y)
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ifeq ($(CONFIG_MPFS_OPENSBI),y)
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LDSCRIPT = ld-envm-opensbi.script
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else
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LDSCRIPT = ld-envm.script
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endif
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else ifeq ($(CONFIG_BUILD_PROTECTED),y)
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LDMEMORY = memory.ld
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LDSCRIPT = kernel-space.ld
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else ifeq ($(CONFIG_BUILD_KERNEL),y)
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LDSCRIPT = ld-kernel.script
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else
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ifeq ($(CONFIG_MPFS_IHC),y)
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LDSCRIPT = ld-ihc.script
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else
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LDSCRIPT = ld.script
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endif
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endif
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ifneq ($(LDMEMORY),)
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ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDMEMORY)
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endif
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ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
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# The following options are for the toolchain from T-HEAD.
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# For more info ahout the T-HEAD ISA extensions, please refer to the MPFS user guide.
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# ARCHCPUFLAGS = -march=rv64gcxthead -mabi=lp64d -mcmodel=medany
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# TODO: We are not going to enable this at this time for the CI compatiblity.
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ARCHCPUFLAGS += -mcmodel=medany
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ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
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ARCHWARNINGSXX = -Wall -Wshadow -Wundef
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CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
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CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
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CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
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CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
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CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
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AFLAGS += $(CFLAGS) -D__ASSEMBLY__
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# Loadable module definitions
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CMODULEFLAGS = $(CFLAGS)
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LDMODULEFLAGS = -r -e module_initialize
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LDMODULEFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/libs/libc/modlib/gnu-elf.ld)
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# ELF module definitions
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CELFFLAGS = $(CFLAGS)
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CXXELFFLAGS = $(CXXFLAGS)
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LDELFFLAGS = -r -e main
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LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/binfmt/libelf/gnu-elf.ld)
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# File extensions
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LDFLAGS += -melf64lriscv
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