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4a281a7789
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>
(cherry picked from commit a3469a90c4)
117 lines
2.9 KiB
Diff
117 lines
2.9 KiB
Diff
From d3cf2859a056273400fbdf9d389b75750ff6ca5e Mon Sep 17 00:00:00 2001
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From: David Abdurachmanov <david.abdurachmanov@sifive.com>
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Date: Fri, 14 May 2021 05:27:51 -0700
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Subject: [PATCH 6/7] riscv: sifive: unleashed: define opp table (cpufreq)
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Source: https://github.com/sifive/riscv-linux/commits/dev/paulw/cpufreq-dt-aloe-v5.3-rc4
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Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com>
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---
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arch/riscv/Kconfig | 8 +++++
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arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 5 ++++
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.../riscv/boot/dts/sifive/hifive-unleashed-a00.dts | 34 ++++++++++++++++++++++
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3 files changed, 47 insertions(+)
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--- a/arch/riscv/Kconfig
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+++ b/arch/riscv/Kconfig
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@@ -565,6 +565,14 @@ config BUILTIN_DTB
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depends on OF
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default y if XIP_KERNEL
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+menu "CPU Power Management"
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+
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+source "drivers/cpuidle/Kconfig"
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+
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+source "drivers/cpufreq/Kconfig"
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+
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+endmenu
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+
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menu "Power management options"
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source "kernel/power/Kconfig"
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--- a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
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+++ b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
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@@ -30,6 +30,7 @@
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i-cache-size = <16384>;
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reg = <0>;
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riscv,isa = "rv64imac";
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+ clocks = <&prci PRCI_CLK_COREPLL>;
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status = "disabled";
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cpu0_intc: interrupt-controller {
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#interrupt-cells = <1>;
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@@ -54,6 +55,7 @@
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reg = <1>;
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riscv,isa = "rv64imafdc";
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tlb-split;
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+ clocks = <&prci PRCI_CLK_COREPLL>;
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next-level-cache = <&l2cache>;
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cpu1_intc: interrupt-controller {
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#interrupt-cells = <1>;
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@@ -78,6 +80,7 @@
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reg = <2>;
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riscv,isa = "rv64imafdc";
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tlb-split;
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+ clocks = <&prci PRCI_CLK_COREPLL>;
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next-level-cache = <&l2cache>;
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cpu2_intc: interrupt-controller {
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#interrupt-cells = <1>;
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@@ -102,6 +105,7 @@
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reg = <3>;
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riscv,isa = "rv64imafdc";
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tlb-split;
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+ clocks = <&prci PRCI_CLK_COREPLL>;
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next-level-cache = <&l2cache>;
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cpu3_intc: interrupt-controller {
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#interrupt-cells = <1>;
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@@ -126,6 +130,7 @@
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reg = <4>;
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riscv,isa = "rv64imafdc";
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tlb-split;
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+ clocks = <&prci PRCI_CLK_COREPLL>;
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next-level-cache = <&l2cache>;
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cpu4_intc: interrupt-controller {
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#interrupt-cells = <1>;
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--- a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
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+++ b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
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@@ -84,6 +84,40 @@
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label = "d4";
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};
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};
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+
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+ fu540_c000_opp_table: opp-table {
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+ compatible = "operating-points-v2";
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+ opp-shared;
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+
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+ opp-350000000 {
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+ opp-hz = /bits/ 64 <350000000>;
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+ };
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+ opp-700000000 {
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+ opp-hz = /bits/ 64 <700000000>;
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+ };
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+ opp-999999999 {
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+ opp-hz = /bits/ 64 <999999999>;
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+ };
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+ opp-1400000000 {
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+ opp-hz = /bits/ 64 <1400000000>;
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+ };
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+ };
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+};
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+
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+&cpu0 {
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+ operating-points-v2 = <&fu540_c000_opp_table>;
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+};
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+&cpu1 {
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+ operating-points-v2 = <&fu540_c000_opp_table>;
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+};
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+&cpu2 {
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+ operating-points-v2 = <&fu540_c000_opp_table>;
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+};
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+&cpu3 {
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+ operating-points-v2 = <&fu540_c000_opp_table>;
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+};
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+&cpu4 {
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+ operating-points-v2 = <&fu540_c000_opp_table>;
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};
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&uart0 {
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