forked from Mirrors/opensbi
c5467fce46
This patch introduces following optional PLATFORM options: PLATFORM_RISCV_XLEN -> RISC-V register width PLATFORM_RISCV_ABI -> RISC-V GCC ABI PLATFORM_RISCV_ISA -> RISC-V GCC ISA string PLATFORM_RISCV_CODE_MODEL -> RISC-V GCC Code Model If the above options are not provided by platform config.mk or by command-line parameters then: 1. PLATFORM_RISCV_XLEN will be determined using toolchain capability 2. PLATFORM_RISCV_ABI, PLATFORM_RISCV_ISA, and PLATFORM_RISCV_CODE_MODEL is set to value best suited for generic libsbi.a As a result of these optional PLATFORM options, the platform-cflags-y and platform-asflags-y is further simplified for platform config.mk. Signed-off-by: Anup Patel <anup.patel@wdc.com>
81 lines
2.3 KiB
Makefile
81 lines
2.3 KiB
Makefile
#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2019 Western Digital Corporation or its affiliates.
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#
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# Compiler pre-processor flags
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platform-cppflags-y =
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# C Compiler and assembler flags.
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platform-cflags-y =
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platform-asflags-y =
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# Linker flags: additional libraries and object files that the platform
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# code needs can be added here
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platform-ldflags-y =
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#
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# Platform RISC-V XLEN, ABI, ISA and Code Model configuration.
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# These are optional parameters but platforms can optionaly provide it.
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# Some of these are guessed based on GCC compiler capabilities
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#
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# PLATFORM_RISCV_XLEN = 64
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# PLATFORM_RISCV_ABI = lp64
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# PLATFORM_RISCV_ISA = rv64imafdc
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# PLATFORM_RISCV_CODE_MODEL = medany
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#
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# OpenSBI implements generic drivers for some common generic hardware. The
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# drivers currently available are the RISC-V Platform Level Interrupt
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# Controller (PLIC), RISC-V Core Local Interrupt controller (CLINT) and a UART
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# 8250 compliant serial line driver (UART8250). The following definitions allow
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# enabling the use of these generic drivers for the platform.
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#
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# PLATFORM_IRQCHIP_PLIC=<y|n>
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# PLATFORM_SYS_CLINT=<y|n>
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# PLATFORM_SERIAL_UART8250=<y|n>
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# Firmware load address configuration. This is mandatory.
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FW_TEXT_START=0x80000000
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#
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# Jump firmware configuration.
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# Optional parameters are commented out. Uncomment and define these parameters
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# as needed.
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#
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FW_JUMP=<y|n>
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# This needs to be 4MB aligned for 32-bit support
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# This needs to be 2MB aligned for 64-bit support
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# ifeq ($(OPENSBI_CC_XLEN), 32)
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# FW_JUMP_ADDR=0x80400000
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# else
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# FW_JUMP_ADDR=0x80200000
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# endif
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# FW_JUMP_FDT_ADDR=0x82200000
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#
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# Firmware with payload configuration.
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# Optional parameters are commented out. Uncomment and define these parameters
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# as needed.
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#
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FW_PAYLOAD=<y|n>
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# This needs to be 4MB aligned for 32-bit support
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# This needs to be 2MB aligned for 64-bit support
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ifeq ($(OPENSBI_CC_XLEN), 32)
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FW_PAYLOAD_OFFSET=0x400000
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else
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FW_PAYLOAD_OFFSET=0x200000
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endif
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# FW_PAYLOAD_ALIGN=0x1000
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# FW_PAYLOAD_PATH="path to next boot stage binary image file"
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# FW_PAYLOAD_FDT_PATH="path to platform flattened device tree file"
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# FW_PAYLOAD_FDT="name of the platform defined flattened device tree file"
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# FW_PAYLOAD_FDT_ADDR=0x82200000
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#
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# Allow linking against static libc for standard functions (memset, memcpy, etc)
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#
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# PLATFORM_INCLUDE_LIBC=y
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