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https://github.com/brain-hackers/u-boot-brain
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a6d7e8c914
At present there is only one Kconfig option CONFIG_SIFIVE_CLINT to
control the enabling of SiFive CLINT support in both SPL (M-mode)
and U-Boot proper (S-mode). So for a typical SPL config that the
SiFive CLINT driver is enabled in both SPL and U-Boot proper, that
means the S-mode U-Boot tries to access the memory-mapped CLINT
registers directly, instead of the normal 'rdtime' instruction.
This was not a problem before, as the hardware does not forbid the
access from S-mode. However this becomes an issue now with OpenSBI
commit 8b569803475e ("lib: utils/sys: Add CLINT memregion in the root domain")
that the SiFive CLINT register space is protected by PMP for M-mode
access only. U-Boot proper does not boot any more with the latest
OpenSBI, that access exceptions are fired forever from U-Boot when
trying to read the timer value via the SiFive CLINT driver in U-Boot.
To solve this, we need to split current SiFive CLINT support between
SPL and U-Boot proper, using 2 separate Kconfig options.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
44 lines
1.3 KiB
Makefile
44 lines
1.3 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0+
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#
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# (C) Copyright 2000-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# Copyright (C) 2017 Andes Technology Corporation
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# Rick Chen, Andes Technology Corporation <rick@andestech.com>
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obj-$(CONFIG_CMD_BOOTM) += bootm.o
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obj-$(CONFIG_CMD_BOOTI) += bootm.o image.o
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obj-$(CONFIG_CMD_GO) += boot.o
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obj-y += cache.o
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ifeq ($(CONFIG_$(SPL_)RISCV_MMODE),y)
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obj-$(CONFIG_$(SPL_)SIFIVE_CLINT) += sifive_clint.o
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obj-$(CONFIG_ANDES_PLIC) += andes_plic.o
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else
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obj-$(CONFIG_SBI) += sbi.o
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obj-$(CONFIG_SBI_IPI) += sbi_ipi.o
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endif
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obj-y += interrupts.o
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ifeq ($(CONFIG_$(SPL_)SYSRESET),)
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obj-y += reset.o
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endif
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obj-y += setjmp.o
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obj-$(CONFIG_$(SPL_)SMP) += smp.o
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obj-$(CONFIG_SPL_BUILD) += spl.o
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obj-y += fdt_fixup.o
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# For building EFI apps
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CFLAGS_NON_EFI := -fstack-protector-strong
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CFLAGS_$(EFI_CRT0) := $(CFLAGS_EFI)
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CFLAGS_REMOVE_$(EFI_CRT0) := $(CFLAGS_NON_EFI)
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CFLAGS_$(EFI_RELOC) := $(CFLAGS_EFI)
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CFLAGS_REMOVE_$(EFI_RELOC) := $(CFLAGS_NON_EFI)
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extra-$(CONFIG_CMD_BOOTEFI_HELLO_COMPILE) += $(EFI_CRT0) $(EFI_RELOC)
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extra-$(CONFIG_CMD_BOOTEFI_SELFTEST) += $(EFI_CRT0) $(EFI_RELOC)
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extra-$(CONFIG_EFI) += $(EFI_CRT0) $(EFI_RELOC)
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obj-$(CONFIG_$(SPL_TPL_)USE_ARCH_MEMSET) += memset.o
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obj-$(CONFIG_$(SPL_TPL_)USE_ARCH_MEMMOVE) += memmove.o
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obj-$(CONFIG_$(SPL_TPL_)USE_ARCH_MEMCPY) += memcpy.o
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