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RISC-V is a new CPU architecture aimed to be fully free and open. This
target will add support for it, based on 5.15.
Supports running on:
- HiFive Unleashed - FU540, first generation
- HiFive Unmatched - FU740, current latest generation, PCIe
SD-card images are generated, where the partitions are required to have
specific type codes. As it is commonplace nowadays, OpenSBI is used as the
first stage, with U-boot following as the proper bootloader.
Specifications:
HiFive Unleashed:
- CPU: SiFive FU540 quad-core RISC-V (U54, RV64IMAFDC or RV64GC)
- Memory: 8Gb
- Ethernet: 1x 10/100/1000
- Console: via microUSB
HiFive Unmatched:
- CPU: SiFive FU740 quad-core RISC-V (U74, RV64IMAFDCB or RV64GCB)
- Memory: 16Gb
- Ethernet: 1x 10/100/1000
- USB: 4x USB 3.2
- PCIe: - 1x PCIe Gen3 x8
- 1x M.2 key M (PCIe x4)
- 1x M.2 Key E (PCIe x1 / USB2.0)
- Console: via microUSB
Installation:
Standard SD-card installation via dd-ing the generated image to
an SD-card of at least 256Mb.
Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
27 lines
789 B
Diff
27 lines
789 B
Diff
From 14ede57943bc4209755d08daf93ac7be967d7fbe Mon Sep 17 00:00:00 2001
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From: David Abdurachmanov <david.abdurachmanov@sifive.com>
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Date: Mon, 13 Sep 2021 02:18:30 -0700
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Subject: [PATCH 4/7] riscv: sifive: unmatched: add gpio-poweroff node
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Add gpio-poweroff node to allow powering off the system.
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Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com>
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---
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arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts | 6 ++++++
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1 file changed, 6 insertions(+)
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--- a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
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+++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
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@@ -85,6 +85,11 @@
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clock-frequency = <RTCCLK_FREQ>;
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clock-output-names = "rtcclk";
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};
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+
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+ gpio-poweroff {
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+ compatible = "gpio-poweroff";
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+ gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
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+ };
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};
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&uart0 {
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