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https://github.com/riscv-software-src/opensbi
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ce7c490719
Move Andes PLICSW ipi device to fdt ipi framework, this patch is based
on Leo's modified IPI scheme on PLICSW.
Current IPI scheme uses bit 0 of pending reigster on PLICSW to send IPI
from hart 0 to hart 7, but bit 0 needs to be hardwired to 0 according
to spec. After some investigation, self-IPI seems to be seldom or never
used, so we re-order the IPI scheme to support 8 core platforms.
dts example (Quad-core AX45MP):
plicsw: interrupt-controller@e6400000 {
compatible = "andestech,plicsw";
reg = <0x00000000 0xe6400000 0x00000000 0x00400000>;
interrupts-extended = <&CPU0_intc 3
&CPU1_intc 3
&CPU2_intc 3
&CPU3_intc 3>;
interrupt-controller;
#address-cells = <2>;
#interrupt-cells = <2>;
};
Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
21 lines
652 B
Makefile
21 lines
652 B
Makefile
#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2020 Western Digital Corporation or its affiliates.
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#
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# Authors:
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# Anup Patel <anup.patel@wdc.com>
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#
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libsbiutils-objs-$(CONFIG_IPI_MSWI) += ipi/aclint_mswi.o
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libsbiutils-objs-$(CONFIG_IPI_PLICSW) += ipi/andes_plicsw.o
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libsbiutils-objs-$(CONFIG_FDT_IPI) += ipi/fdt_ipi.o
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libsbiutils-objs-$(CONFIG_FDT_IPI) += ipi/fdt_ipi_drivers.o
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carray-fdt_ipi_drivers-$(CONFIG_FDT_IPI_MSWI) += fdt_ipi_mswi
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libsbiutils-objs-$(CONFIG_FDT_IPI_MSWI) += ipi/fdt_ipi_mswi.o
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carray-fdt_ipi_drivers-$(CONFIG_FDT_IPI_PLICSW) += fdt_ipi_plicsw
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libsbiutils-objs-$(CONFIG_FDT_IPI_PLICSW) += ipi/fdt_ipi_plicsw.o
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