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-rw-r--r--arch/riscv/Kconfig17
-rw-r--r--arch/riscv/cpu/cpu.c15
-rw-r--r--arch/riscv/cpu/fu540/Makefile1
-rw-r--r--arch/riscv/cpu/fu540/cache.c53
-rw-r--r--arch/riscv/cpu/start.S2
-rw-r--r--arch/riscv/dts/Makefile1
-rw-r--r--arch/riscv/dts/fu540-c000-u-boot.dtsi10
-rw-r--r--arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi4
-rw-r--r--arch/riscv/dts/k210-maix-bit.dts47
-rw-r--r--arch/riscv/dts/k210.dtsi594
-rw-r--r--arch/riscv/include/asm/arch-fu540/cache.h14
-rw-r--r--arch/riscv/include/asm/csr.h40
-rw-r--r--arch/riscv/include/asm/global_data.h2
-rw-r--r--arch/riscv/include/asm/smp.h43
-rw-r--r--arch/riscv/include/asm/u-boot.h19
-rw-r--r--arch/riscv/lib/Makefile2
-rw-r--r--arch/riscv/lib/andes_plic.c34
-rw-r--r--arch/riscv/lib/fdt_fixup.c46
-rw-r--r--arch/riscv/lib/reset.c2
-rw-r--r--arch/riscv/lib/sbi_ipi.c5
-rw-r--r--arch/riscv/lib/sifive_clint.c33
-rw-r--r--arch/riscv/lib/smp.c49
22 files changed, 913 insertions, 120 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index d9854f5283..009a545fcf 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -20,6 +20,9 @@ config TARGET_QEMU_VIRT
config TARGET_SIFIVE_FU540
bool "Support SiFive FU540 Board"
+config TARGET_SIPEED_MAIX
+ bool "Support Sipeed Maix Board"
+
endchoice
config SYS_ICACHE_OFF
@@ -53,6 +56,7 @@ source "board/AndesTech/ax25-ae350/Kconfig"
source "board/emulation/qemu-riscv/Kconfig"
source "board/microchip/mpfs_icicle/Kconfig"
source "board/sifive/fu540/Kconfig"
+source "board/sipeed/maix/Kconfig"
# platform-specific options below
source "arch/riscv/cpu/ax25/Kconfig"
@@ -269,8 +273,21 @@ config XIP
config SHOW_REGS
bool "Show registers on unhandled exception"
+config RISCV_PRIV_1_9
+ bool "Use version 1.9 of the RISC-V priviledged specification"
+ help
+ Older versions of the RISC-V priviledged specification had
+ separate counter enable CSRs for each privilege mode. Writing
+ to the unified mcounteren CSR on a processor implementing the
+ old specification will result in an illegal instruction
+ exception. In addition to counter CSR changes, the way virtual
+ memory is configured was also changed.
+
config STACK_SIZE_SHIFT
int
default 14
+config OF_BOARD_FIXUP
+ default y if OF_SEPARATE
+
endmenu
diff --git a/arch/riscv/cpu/cpu.c b/arch/riscv/cpu/cpu.c
index 5804aa8e73..bbd6c15352 100644
--- a/arch/riscv/cpu/cpu.c
+++ b/arch/riscv/cpu/cpu.c
@@ -91,13 +91,28 @@ int arch_cpu_init_dm(void)
* Enable perf counters for cycle, time,
* and instret counters only
*/
+#ifdef CONFIG_RISCV_PRIV_1_9
+ csr_write(CSR_MSCOUNTEREN, GENMASK(2, 0));
+ csr_write(CSR_MUCOUNTEREN, GENMASK(2, 0));
+#else
csr_write(CSR_MCOUNTEREN, GENMASK(2, 0));
+#endif
/* Disable paging */
if (supports_extension('s'))
+#ifdef CONFIG_RISCV_PRIV_1_9
+ csr_read_clear(CSR_MSTATUS, SR_VM);
+#else
csr_write(CSR_SATP, 0);
+#endif
}
+#ifdef CONFIG_SMP
+ ret = riscv_init_ipi();
+ if (ret)
+ return ret;
+#endif
+
return 0;
}
diff --git a/arch/riscv/cpu/fu540/Makefile b/arch/riscv/cpu/fu540/Makefile
index 043fb961a5..088205ef57 100644
--- a/arch/riscv/cpu/fu540/Makefile
+++ b/arch/riscv/cpu/fu540/Makefile
@@ -8,4 +8,5 @@ obj-y += spl.o
else
obj-y += dram.o
obj-y += cpu.o
+obj-y += cache.o
endif
diff --git a/arch/riscv/cpu/fu540/cache.c b/arch/riscv/cpu/fu540/cache.c
new file mode 100644
index 0000000000..9ee364b509
--- /dev/null
+++ b/arch/riscv/cpu/fu540/cache.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 SiFive, Inc
+ *
+ * Authors:
+ * Pragnesh Patel <pragnesh.patel@sifive.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <linux/bitops.h>
+
+/* Register offsets */
+#define L2_CACHE_CONFIG 0x000
+#define L2_CACHE_ENABLE 0x008
+
+#define MASK_NUM_WAYS GENMASK(15, 8)
+#define NUM_WAYS_SHIFT 8
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int cache_enable_ways(void)
+{
+ const void *blob = gd->fdt_blob;
+ int node = (-FDT_ERR_NOTFOUND);
+ fdt_addr_t base;
+ u32 config;
+ u32 ways;
+
+ volatile u32 *enable;
+
+ node = fdt_node_offset_by_compatible(blob, -1,
+ "sifive,fu540-c000-ccache");
+
+ if (node < 0)
+ return node;
+
+ base = fdtdec_get_addr(blob, node, "reg");
+ if (base == FDT_ADDR_T_NONE)
+ return FDT_ADDR_T_NONE;
+
+ config = readl((volatile u32 *)base + L2_CACHE_CONFIG);
+ ways = (config & MASK_NUM_WAYS) >> NUM_WAYS_SHIFT;
+
+ enable = (volatile u32 *)(base + L2_CACHE_ENABLE);
+
+ /* memory barrier */
+ mb();
+ (*enable) = ways - 1;
+ /* memory barrier */
+ mb();
+ return 0;
+}
diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S
index 5f1c220e0c..f408e41ab9 100644
--- a/arch/riscv/cpu/start.S
+++ b/arch/riscv/cpu/start.S
@@ -65,6 +65,8 @@ _start:
#else
li t0, SIE_SSIE
#endif
+ /* Clear any pending IPIs */
+ csrc MODE_PREFIX(ip), t0
csrs MODE_PREFIX(ie), t0
#endif
diff --git a/arch/riscv/dts/Makefile b/arch/riscv/dts/Makefile
index 4f30e6936f..3a6f96c67d 100644
--- a/arch/riscv/dts/Makefile
+++ b/arch/riscv/dts/Makefile
@@ -2,6 +2,7 @@
dtb-$(CONFIG_TARGET_AX25_AE350) += ae350_32.dtb ae350_64.dtb
dtb-$(CONFIG_TARGET_SIFIVE_FU540) += hifive-unleashed-a00.dtb
+dtb-$(CONFIG_TARGET_SIPEED_MAIX) += k210-maix-bit.dtb
targets += $(dtb-y)
diff --git a/arch/riscv/dts/fu540-c000-u-boot.dtsi b/arch/riscv/dts/fu540-c000-u-boot.dtsi
index 9bba554f9d..afdb4f4402 100644
--- a/arch/riscv/dts/fu540-c000-u-boot.dtsi
+++ b/arch/riscv/dts/fu540-c000-u-boot.dtsi
@@ -27,7 +27,7 @@
clocks = <&prci PRCI_CLK_COREPLL>;
u-boot,dm-spl;
cpu2_intc: interrupt-controller {
- u-boot,dm-spl;
+ u-boot,dm-spl;
};
};
cpu3: cpu@3 {
@@ -50,7 +50,7 @@
u-boot,dm-spl;
otp: otp@10070000 {
compatible = "sifive,fu540-c000-otp";
- reg = <0x0 0x10070000 0x0 0x0FFF>;
+ reg = <0x0 0x10070000 0x0 0x1000>;
fuse-count = <0x1000>;
};
clint@2000000 {
@@ -63,7 +63,7 @@
compatible = "sifive,fu540-c000-ddr";
reg = <0x0 0x100b0000 0x0 0x0800
0x0 0x100b2000 0x0 0x2000
- 0x0 0x100b8000 0x0 0x0fff>;
+ 0x0 0x100b8000 0x0 0x1000>;
clocks = <&prci PRCI_CLK_DDRPLL>;
clock-frequency = <933333324>;
u-boot,dm-spl;
@@ -87,3 +87,7 @@
assigned-clocks = <&prci PRCI_CLK_GEMGXLPLL>;
assigned-clock-rates = <125000000>;
};
+
+&l2cache {
+ status = "okay";
+};
diff --git a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
index 303806454b..e037150520 100644
--- a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
+++ b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
@@ -8,6 +8,10 @@
/ {
aliases {
+ cpu1 = &cpu1;
+ cpu2 = &cpu2;
+ cpu3 = &cpu3;
+ cpu4 = &cpu4;
spi0 = &qspi0;
spi2 = &qspi2;
};
diff --git a/arch/riscv/dts/k210-maix-bit.dts b/arch/riscv/dts/k210-maix-bit.dts
new file mode 100644
index 0000000000..5b32c5fd5f
--- /dev/null
+++ b/arch/riscv/dts/k210-maix-bit.dts
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
+ */
+
+/dts-v1/;
+
+#include "k210.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+ model = "Sipeed Maix Bit 2.0";
+ compatible = "sipeed,maix-bitm", "sipeed,maix-bit", "kendryte,k210";
+
+ chosen {
+ stdout-path = "serial0:115200";
+ };
+
+ sound {
+ compatible = "simple-audio-card";
+ simple-audio-card,format = "i2s";
+ status = "disabled";
+
+ simple-audio-card,cpu {
+ sound-dai = <&i2s0 0>;
+ };
+
+ simple-audio-card,codec {
+ sound-dai = <&mic>;
+ };
+ };
+
+ mic: mic {
+ #sound-dai-cells = <0>;
+ compatible = "memsensing,msm61s4030h0";
+ status = "disabled";
+ };
+};
+
+&uarths0 {
+ status = "okay";
+};
+
+&i2s0 {
+ #sound-dai-cells = <1>;
+};
diff --git a/arch/riscv/dts/k210.dtsi b/arch/riscv/dts/k210.dtsi
new file mode 100644
index 0000000000..2546c7d4e0
--- /dev/null
+++ b/arch/riscv/dts/k210.dtsi
@@ -0,0 +1,594 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
+ */
+
+#include <dt-bindings/clock/k210-sysctl.h>
+#include <dt-bindings/mfd/k210-sysctl.h>
+#include <dt-bindings/reset/k210-sysctl.h>
+
+/ {
+ /*
+ * Although the K210 is a 64-bit CPU, the address bus is only 32-bits
+ * wide, and the upper half of all addresses is ignored.
+ */
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "kendryte,k210";
+
+ aliases {
+ dma0 = &dmac0;
+ gpio0 = &gpio0;
+ gpio1 = &gpio1_0;
+ i2c0 = &i2c0;
+ i2c1 = &i2c1;
+ i2c2 = &i2c2;
+ pinctrl0 = &fpioa;
+ serial0 = &uarths0;
+ serial1 = &uart1;
+ serial2 = &uart2;
+ serial3 = &uart3;
+ spi0 = &spi0;
+ spi1 = &spi1;
+ spi2 = &spi2;
+ spi3 = &spi3;
+ timer0 = &timer0;
+ timer1 = &timer1;
+ timer2 = &timer2;
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ timebase-frequency = <7800000>;
+ cpu0: cpu@0 {
+ device_type = "cpu";
+ compatible = "kendryte,k210", "sifive,rocket0", "riscv";
+ reg = <0>;
+ riscv,isa = "rv64imafdgc";
+ mmu-type = "sv39";
+ i-cache-block-size = <64>;
+ i-cache-size = <0x8000>;
+ d-cache-block-size = <64>;
+ d-cache-size = <0x8000>;
+ clocks = <&sysclk K210_CLK_CPU>;
+ cpu0_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ compatible = "riscv,cpu-intc";
+ };
+ };
+ cpu1: cpu@1 {
+ device_type = "cpu";
+ compatible = "kendryte,k210", "sifive,rocket0", "riscv";
+ reg = <1>;
+ riscv,isa = "rv64imafdgc";
+ mmu-type = "sv39";
+ i-cache-block-size = <64>;
+ i-cache-size = <0x8000>;
+ d-cache-block-size = <64>;
+ d-cache-size = <0x8000>;
+ clocks = <&sysclk K210_CLK_CPU>;
+ cpu1_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ compatible = "riscv,cpu-intc";
+ };
+ };
+ };
+
+ sram: memory@80000000 {
+ device_type = "memory";
+ compatible = "kendryte,k210-sram";
+ reg = <0x80000000 0x400000>,
+ <0x80400000 0x200000>,
+ <0x80600000 0x200000>;
+ reg-names = "sram0", "sram1", "airam";
+ clocks = <&sysclk K210_CLK_SRAM0>,
+ <&sysclk K210_CLK_SRAM1>,
+ <&sysclk K210_CLK_PLL1>;
+ clock-names = "sram0", "sram1", "airam";
+ };
+
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ ai_reserved: ai@80600000 {
+ reg = <0x80600000 0x200000>;
+ reusable;
+ };
+ };
+
+ clocks {
+ in0: osc {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <26000000>;
+ };
+ };
+
+ soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "kendryte,k210-soc", "simple-bus";
+ ranges;
+ interrupt-parent = <&plic0>;
+
+ debug0: debug@0 {
+ compatible = "kendryte,k210-debug", "riscv,debug";
+ reg = <0x0 0x1000>;
+ };
+
+ rom0: nvmem@1000 {
+ reg = <0x1000 0x1000>;
+ read-only;
+ };
+
+ clint0: interrupt-controller@2000000 {
+ #interrupt-cells = <1>;
+ compatible = "kendryte,k210-clint", "riscv,clint0";
+ reg = <0x2000000 0xC000>;
+ interrupt-controller;
+ interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>,
+ <&cpu1_intc 3>, <&cpu1_intc 7>;
+ clocks = <&sysclk K210_CLK_CPU>;
+ };
+
+ plic0: interrupt-controller@C000000 {
+ #interrupt-cells = <1>;
+ compatible = "kendryte,k210-plic", "riscv,plic0";
+ reg = <0xC000000 0x4000000>;
+ interrupt-controller;
+ interrupts-extended = <&cpu0_intc 9>, <&cpu0_intc 11>,
+ <&cpu1_intc 9>, <&cpu1_intc 11>;
+ riscv,ndev = <65>;
+ riscv,max-priority = <7>;
+ };
+
+ uarths0: serial@38000000 {
+ compatible = "kendryte,k210-uarths", "sifive,uart0";
+ reg = <0x38000000 0x1000>;
+ interrupts = <33>;
+ clocks = <&sysclk K210_CLK_CPU>;
+ status = "disabled";
+ };
+
+ gpio0: gpio-controller@38001000 {
+ #interrupt-cells = <2>;
+ #gpio-cells = <2>;
+ compatible = "kendryte,k210-gpiohs", "sifive,gpio0";
+ reg = <0x38001000 0x1000>;
+ interrupt-controller;
+ interrupts = <34 35 36 37 38 39 40 41
+ 42 43 44 45 46 47 48 49
+ 50 51 52 53 54 55 56 57
+ 58 59 60 61 62 63 64 65>;
+ gpio-controller;
+ ngpios = <32>;
+ status = "disabled";
+ };
+
+ kpu0: kpu@40800000 {
+ compatible = "kendryte,k210-kpu";
+ reg = <0x40800000 0xc00000>;
+ interrupts = <25>;
+ clocks = <&sysclk K210_CLK_AI>;
+ memory-region = <&ai_reserved>;
+ status = "disabled";
+ };
+
+ fft0: fft@42000000 {
+ compatible = "kendryte,k210-fft";
+ reg = <0x42000000 0x400000>;
+ interrupts = <26>;
+ clocks = <&sysclk K210_CLK_FFT>;
+ resets = <&sysrst K210_RST_FFT>;
+ status = "disabled";
+ };
+
+ dmac0: dma-controller@50000000 {
+ compatible = "kendryte,k210-dmac", "snps,axi-dma-1.01a";
+ reg = <0x50000000 0x1000>;
+ interrupts = <27 28 29 30 31 32>;
+ clocks = <&sysclk K210_CLK_DMA>, <&sysclk K210_CLK_DMA>;
+ clock-names = "core-clk", "cfgr-clk";
+ resets = <&sysrst K210_RST_DMA>;
+ dma-channels = <6>;
+ snps,dma-masters = <2>;
+ snps,data-width = <5>;
+ snps,block-size = <0x400000 0x400000 0x400000
+ 0x400000 0x400000 0x400000>;
+ snps,axi-max-burst-len = <256>;
+ status = "disabled";
+ };
+
+ apb0: bus@50200000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "kendryte,k210-apb", "simple-pm-bus";
+ ranges;
+ clocks = <&sysclk K210_CLK_APB0>;
+
+ gpio1: gpio-controller@50200000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "kendryte,k210-gpio",
+ "snps,dw-apb-gpio";
+ reg = <0x50200000 0x80>;
+ clocks = <&sysclk K210_CLK_GPIO>;
+ resets = <&sysrst K210_RST_GPIO>;
+ status = "disabled";
+
+ gpio1_0: gpio1@0 {
+ #gpio-cells = <2>;
+ #interrupt-cells = <2>;
+ compatible = "snps,dw-apb-gpio-port";
+ reg = <0>;
+ interrupt-controller;
+ interrupts = <23>;
+ gpio-controller;
+ snps,nr-gpios = <8>;
+ };
+ };
+
+ uart1: serial@50210000 {
+ compatible = "kendryte,k210-uart",
+ "snps,dw-apb-uart";
+ reg = <0x50210000 0x100>;
+ interrupts = <11>;
+ clocks = <&sysclk K210_CLK_UART1>;
+ resets = <&sysrst K210_RST_UART1>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ dcd-override;
+ dsr-override;
+ cts-override;
+ ri-override;
+ status = "disabled";
+ };
+
+ uart2: serial@50220000 {
+ compatible = "kendryte,k210-uart",
+ "snps,dw-apb-uart";
+ reg = <0x50220000 0x100>;
+ interrupts = <12>;
+ clocks = <&sysclk K210_CLK_UART2>;
+ resets = <&sysrst K210_RST_UART2>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ dcd-override;
+ dsr-override;
+ cts-override;
+ ri-override;
+ status = "disabled";
+ };
+
+ uart3: serial@50230000 {
+ compatible = "kendryte,k210-uart",
+ "snps,dw-apb-uart";
+ reg = <0x50230000 0x100>;
+ interrupts = <13>;
+ clocks = <&sysclk K210_CLK_UART3>;
+ resets = <&sysrst K210_RST_UART3>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ dcd-override;
+ dsr-override;
+ cts-override;
+ ri-override;
+ status = "disabled";
+ };
+
+ spi2: spi@50240000 {
+ compatible = "kendryte,k120-spislave",
+ "snps,dw-apb-ssi";
+ spi-slave;
+ reg = <0x50240000 0x100>;
+ interrupts = <2>;
+ clocks = <&sysclk K210_CLK_SPI2>;
+ resets = <&sysrst K210_RST_SPI2>;
+ spi-max-frequency = <25000000>;
+ status = "disabled";
+ };
+
+ i2s0: i2s@50250000 {
+ compatible = "kendryte,k210-i2s",
+ "snps,designware-i2s";
+ reg = <0x50250000 0x200>;
+ interrupts = <5>;
+ clocks = <&sysclk K210_CLK_I2S0>;
+ clock-names = "i2sclk";
+ resets = <&sysrst K210_RST_I2S0>;
+ status = "disabled";
+ };
+
+ apu0: sound@520250200 {
+ compatible = "kendryte,k210-apu";
+ reg = <0x50250200 0x200>;
+ status = "disabled";
+ };
+
+ i2s1: i2s@50260000 {
+ compatible = "kendryte,k210-i2s",
+ "snps,designware-i2s";
+ reg = <0x50260000 0x200>;
+ interrupts = <6>;
+ clocks = <&sysclk K210_CLK_I2S1>;
+ clock-names = "i2sclk";
+ resets = <&sysrst K210_RST_I2S1>;
+ status = "disabled";
+ };
+
+ i2s2: i2s@50270000 {
+ compatible = "kendryte,k210-i2s",
+ "snps,designware-i2s";
+ reg = <0x50270000 0x200>;
+ interrupts = <7>;
+ clocks = <&sysclk K210_CLK_I2S2>;
+ clock-names = "i2sclk";
+ resets = <&sysrst K210_RST_I2S2>;
+ status = "disabled";
+ };
+
+ i2c0: i2c@50280000 {
+ compatible = "kendryte,k210-i2c",
+ "snps,designware-i2c";
+ reg = <0x50280000 0x100>;
+ interrupts = <8>;
+ clocks = <&sysclk K210_CLK_I2C0>;
+ resets = <&sysrst K210_RST_I2C0>;
+ status = "disabled";
+ };
+
+ i2c1: i2c@50290000 {
+ compatible = "kendryte,k210-i2c",
+ "snps,designware-i2c";
+ reg = <0x50290000 0x100>;
+ interrupts = <9>;
+ clocks = <&sysclk K210_CLK_I2C1>;
+ resets = <&sysrst K210_RST_I2C1>;
+ status = "disabled";
+ };
+
+ i2c2: i2c@502A0000 {
+ compatible = "kendryte,k210-i2c",
+ "snps,designware-i2c";
+ reg = <0x502A0000 0x100>;
+ interrupts = <10>;
+ clocks = <&sysclk K210_CLK_I2C2>;
+ resets = <&sysrst K210_RST_I2C2>;
+ status = "disabled";
+ };
+
+ fpioa: pinmux@502B0000 {
+ compatible = "kendryte,k210-fpioa";
+ reg = <0x502B0000 0x100>;
+ clocks = <&sysclk K210_CLK_FPIOA>;
+ resets = <&sysrst K210_RST_FPIOA>;
+ status = "disabled";
+ };
+
+ sha256: sha256@502C0000 {
+ compatible = "kendryte,k210-sha256";
+ reg = <0x502C0000 0x100>;
+ clocks = <&sysclk K210_CLK_SHA>;
+ resets = <&sysrst K210_RST_SHA>;
+ status = "disabled";
+ };
+
+ timer0: timer@502D0000 {
+ compatible = "kendryte,k210-timer",
+ "snps,dw-apb-timer";
+ reg = <0x502D0000 0x100>;
+ interrupts = <14 15>;
+ clocks = <&sysclk K210_CLK_TIMER0>;
+ clock-names = "timer";
+ resets = <&sysrst K210_RST_TIMER0>;
+ status = "disabled";
+ };
+
+ timer1: timer@502E0000 {
+ compatible = "kendryte,k210-timer",
+ "snps,dw-apb-timer";
+ reg = <0x502E0000 0x100>;
+ interrupts = <16 17>;
+ clocks = <&sysclk K210_CLK_TIMER1>;
+ clock-names = "timer";
+ resets = <&sysrst K210_RST_TIMER1>;
+ status = "disabled";
+ };
+
+ timer2: timer@502F0000 {
+ compatible = "kendryte,k210-timer",
+ "snps,dw-apb-timer";
+ reg = <0x502F0000 0x100>;
+ interrupts = <18 19>;
+ clocks = <&sysclk K210_CLK_TIMER2>;
+ clock-names = "timer";
+ resets = <&sysrst K210_RST_TIMER2>;
+ status = "disabled";
+ };
+ };
+
+ apb1: bus@50400000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "kendryte,k210-apb", "simple-pm-bus";
+ ranges;
+ clocks = <&sysclk K210_CLK_APB1>;
+
+ wdt0: watchdog@50400000 {
+ compatible = "kendryte,k210-wdt", "snps,dw-wdt";
+ reg = <0x50400000 0x100>;
+ interrupts = <21>;
+ clocks = <&sysclk K210_CLK_WDT0>;
+ resets = <&sysrst K210_RST_WDT0>;
+ status = "disabled";
+ };
+
+ wdt1: watchdog@50410000 {
+ compatible = "kendryte,k210-wdt", "snps,dw-wdt";
+ reg = <0x50410000 0x100>;
+ interrupts = <22>;
+ clocks = <&sysclk K210_CLK_WDT1>;
+ resets = <&sysrst K210_RST_WDT1>;
+ status = "disabled";
+ };
+
+ otp0: nvmem@50420000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "kendryte,k210-otp";
+ reg = <0x50420000 0x100>,
+ <0x88000000 0x20000>;
+ reg-names = "reg", "mem";
+ clocks = <&sysclk K210_CLK_ROM>;
+ resets = <&sysrst K210_RST_ROM>;
+ read-only;
+ status = "disabled";
+
+ /* Bootloader */
+ firmware@00000 {
+ reg = <0x00000 0xC200>;
+ };
+
+ /*
+ * config string as described in RISC-V
+ * privileged spec 1.9
+ */
+ config-1-9@1c000 {
+ reg = <0x1C000 0x1000>;
+ };
+
+ /*
+ * Device tree containing only registers,
+ * interrupts, and cpus
+ */
+ fdt@1d000 {
+ reg = <0x1D000 0x2000>;
+ };
+
+ /* CPU/ROM credits */
+ credits@1f000 {
+ reg = <0x1F000 0x1000>;
+ };
+ };
+
+ dvp0: camera@50430000 {
+ compatible = "kendryte,k210-dvp";
+ reg = <0x50430000 0x100>;
+ interrupts = <24>;
+ clocks = <&sysclk K210_CLK_DVP>;
+ resets = <&sysrst K210_RST_DVP>;
+ status = "disabled";
+ };
+
+ sysctl: syscon@50440000 {
+ compatible = "kendryte,k210-sysctl",
+ "syscon", "simple-mfd";
+ reg = <0x50440000 0x100>;
+ reg-io-width = <4>;
+
+ sysclk: clock-controller {
+ #clock-cells = <1>;
+ compatible = "kendryte,k210-clk";
+ clocks = <&in0>;
+ };
+
+ sysrst: reset-controller {
+ compatible = "kendryte,k210-rst",
+ "syscon-reset";
+ #reset-cells = <1>;
+ regmap = <&sysctl>;
+ offset = <K210_SYSCTL_PERI_RESET>;
+ mask = <0x27FFFFFF>;
+ assert-high = <1>;
+ };
+
+ reboot {
+ compatible = "syscon-reboot";
+ regmap = <&sysctl>;
+ offset = <K210_SYSCTL_SOFT_RESET>;
+ mask = <1>;
+ value = <1>;
+ };
+ };
+
+ aes0: aes@50450000 {
+ compatible = "kendryte,k210-aes";
+ reg = <0x50450000 0x100>;
+ clocks = <&sysclk K210_CLK_AES>;
+ resets = <&sysrst K210_RST_AES>;
+ status = "disabled";
+ };
+
+ rtc: rtc@50460000 {
+ compatible = "kendryte,k210-rtc";
+ reg = <0x50460000 0x100>;
+ clocks = <&in0>;
+ resets = <&sysrst K210_RST_RTC>;
+ interrupts = <20>;
+ status = "disabled";
+ };
+ };
+
+ apb2: bus@52000000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "kendryte,k210-apb", "simple-pm-bus";
+ ranges;
+ clocks = <&sysclk K210_CLK_APB2>;
+
+ spi0: spi@52000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "kendryte,k210-spi",
+ "snps,dw-apb-ssi";
+ reg = <0x52000000 0x100>;
+ interrupts = <1>;
+ clocks = <&sysclk K210_CLK_SPI0>;
+ clock-names = "ssi_clk";
+ resets = <&sysrst K210_RST_SPI0>;
+ spi-max-frequency = <25000000>;
+ num-cs = <4>;
+ reg-io-width = <4>;
+ status = "disabled";
+ };
+
+ spi1: spi@53000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "kendryte,k210-spi",
+ "snps,dw-apb-ssi";
+ reg = <0x53000000 0x100>;
+ interrupts = <2>;
+ clocks = <&sysclk K210_CLK_SPI1>;
+ clock-names = "ssi_clk";
+ resets = <&sysrst K210_RST_SPI1>;
+ spi-max-frequency = <25000000>;
+ num-cs = <4>;
+ reg-io-width = <4>;
+ status = "disabled";
+ };
+
+ spi3: spi@54000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "kendryte,k210-spi",
+ "snps,dw-apb-ssi";
+ reg = <0x54000000 0x200>;
+ interrupts = <4>;
+ clocks = <&sysclk K210_CLK_SPI3>;
+ clock-names = "ssi_clk";
+ resets = <&sysrst K210_RST_SPI3>;
+ /* Could possibly go up to 200 MHz */
+ spi-max-frequency = <100000000>;
+ num-cs = <4>;
+ reg-io-width = <4>;
+ status = "disabled";
+ };
+ };
+ };
+};
diff --git a/arch/riscv/include/asm/arch-fu540/cache.h b/arch/riscv/include/asm/arch-fu540/cache.h
new file mode 100644
index 0000000000..135a17c679
--- /dev/null
+++ b/arch/riscv/include/asm/arch-fu540/cache.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2020 SiFive, Inc.
+ *
+ * Authors:
+ * Pragnesh Patel <pragnesh.patel@sifve.com>
+ */
+
+#ifndef _CACHE_SIFIVE_H
+#define _CACHE_SIFIVE_H
+
+int cache_enable_ways(void);
+
+#endif /* _CACHE_SIFIVE_H */
diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h
index d1520743a2..1a15089cae 100644
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
@@ -15,7 +15,11 @@
#define SR_SIE _AC(0x00000002, UL) /* Supervisor Interrupt Enable */
#define SR_SPIE _AC(0x00000020, UL) /* Previous Supervisor IE */
#define SR_SPP _AC(0x00000100, UL) /* Previously Supervisor */
+#ifdef CONFIG_RISCV_PRIV_1_9
+#define SR_PUM _AC(0x00040000, UL) /* Protect User Memory Access */
+#else
#define SR_SUM _AC(0x00040000, UL) /* Supervisor User Memory Access */
+#endif
#define SR_FS _AC(0x00006000, UL) /* Floating-point Status */
#define SR_FS_OFF _AC(0x00000000, UL)
@@ -29,6 +33,22 @@
#define SR_XS_CLEAN _AC(0x00010000, UL)
#define SR_XS_DIRTY _AC(0x00018000, UL)
+#ifdef CONFIG_RISCV_PRIV_1_9
+#define SR_VM _AC(0x1F000000, UL) /* Virtualization Management */
+#define SR_VM_MODE_BARE _AC(0x00000000, UL) /* No translation or protection */
+#define SR_VM_MODE_BB _AC(0x01000000, UL) /* Single base-and-bound */
+/* Separate instruction and data base-and-bound */
+#define SR_VM_MODE_BBID _AC(0x02000000, UL)
+#ifndef CONFIG_64BIT
+#define SR_VM_MODE_32 _AC(0x08000000, UL)
+#define SR_VM_MODE SR_VM_MODE_32
+#else
+#define SR_VM_MODE_39 _AC(0x09000000, UL)
+#define SR_VM_MODE_48 _AC(0x0A000000, UL)
+#define SR_VM_MODE SR_VM_MODE_39
+#endif
+#endif
+
#ifndef CONFIG_64BIT
#define SR_SD _AC(0x80000000, UL) /* FS/XS dirty */
#else
@@ -36,6 +56,7 @@
#endif
/* SATP flags */
+#ifndef CONFIG_RISCV_PRIV_1_9
#ifndef CONFIG_64BIT
#define SATP_PPN _AC(0x003FFFFF, UL)
#define SATP_MODE_32 _AC(0x80000000, UL)
@@ -45,6 +66,7 @@
#define SATP_MODE_39 _AC(0x8000000000000000, UL)
#define SATP_MODE SATP_MODE_39
#endif
+#endif
/* SCAUSE */
#define SCAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1))
@@ -88,17 +110,35 @@
#define CSR_SCAUSE 0x142
#define CSR_STVAL 0x143
#define CSR_SIP 0x144
+#ifdef CONFIG_RISCV_PRIV_1_9
+#define CSR_SPTBR 0x180
+#else
#define CSR_SATP 0x180
+#endif
#define CSR_MSTATUS 0x300
#define CSR_MISA 0x301
#define CSR_MIE 0x304
#define CSR_MTVEC 0x305
+#ifdef CONFIG_RISCV_PRIV_1_9
+#define CSR_MUCOUNTEREN 0x320
+#define CSR_MSCOUNTEREN 0x321
+#define CSR_MHCOUNTEREN 0x322
+#else
#define CSR_MCOUNTEREN 0x306
+#endif
#define CSR_MSCRATCH 0x340
#define CSR_MEPC 0x341
#define CSR_MCAUSE 0x342
#define CSR_MTVAL 0x343
#define CSR_MIP 0x344
+#ifdef CONFIG_RISCV_PRIV_1_9
+#define CSR_MBASE 0x380
+#define CSR_MBOUND 0x381
+#define CSR_MIBASE 0x382
+#define CSR_MIBOUND 0x383
+#define CSR_MDBASE 0x384
+#define CSR_MDBOUND 0x385
+#endif
#define CSR_CYCLEH 0xc80
#define CSR_TIMEH 0xc81
#define CSR_INSTRETH 0xc82
diff --git a/arch/riscv/include/asm/global_data.h b/arch/riscv/include/asm/global_data.h
index 6c50149218..2eb14815bc 100644
--- a/arch/riscv/include/asm/global_data.h
+++ b/arch/riscv/include/asm/global_data.h
@@ -11,6 +11,8 @@
#define __ASM_GBL_DATA_H
#include <asm/smp.h>
+#include <asm/u-boot.h>
+#include <compiler.h>
/* Architecture-specific global data */
struct arch_global_data {
diff --git a/arch/riscv/include/asm/smp.h b/arch/riscv/include/asm/smp.h
index 74de92ed13..1b428856b2 100644
--- a/arch/riscv/include/asm/smp.h
+++ b/arch/riscv/include/asm/smp.h
@@ -51,4 +51,47 @@ void handle_ipi(ulong hart);
*/
int smp_call_function(ulong addr, ulong arg0, ulong arg1, int wait);
+/**
+ * riscv_init_ipi() - Initialize inter-process interrupt (IPI) driver
+ *
+ * Platform code must provide this function. This function is called once after
+ * the cpu driver is initialized. No other riscv_*_ipi() calls will be made
+ * before this function is called.
+ *
+ * @return 0 if OK, -ve on error
+ */
+int riscv_init_ipi(void);
+
+/**
+ * riscv_send_ipi() - Send inter-processor interrupt (IPI)
+ *
+ * Platform code must provide this function.
+ *
+ * @hart: Hart ID of receiving hart
+ * @return 0 if OK, -ve on error
+ */
+int riscv_send_ipi(int hart);
+
+/**
+ * riscv_clear_ipi() - Clear inter-processor interrupt (IPI)
+ *
+ * Platform code must provide this function.
+ *
+ * @hart: Hart ID of hart to be cleared
+ * @return 0 if OK, -ve on error
+ */
+int riscv_clear_ipi(int hart);
+
+/**
+ * riscv_get_ipi() - Get status of inter-processor interrupt (IPI)
+ *
+ * Platform code must provide this function.
+ *
+ * @hart: Hart ID of hart to be checked
+ * @pending: Pointer to variable with result of the check,
+ * 1 if IPI is pending, 0 otherwise
+ * @return 0 if OK, -ve on error
+ */
+int riscv_get_ipi(int hart, int *pending);
+
#endif
diff --git a/arch/riscv/include/asm/u-boot.h b/arch/riscv/include/asm/u-boot.h
index 5ba8e77812..d5e1d5f323 100644
--- a/arch/riscv/include/asm/u-boot.h
+++ b/arch/riscv/include/asm/u-boot.h
@@ -18,25 +18,10 @@
#ifndef _U_BOOT_H_
#define _U_BOOT_H_ 1
+/* Use the generic board which requires a unified bd_info */
+#include <asm-generic/u-boot.h>
#include <asm/u-boot-riscv.h>
-
-typedef struct bd_info {
- unsigned long bi_boot_params; /* where this board expects params */
- unsigned long bi_memstart; /* start of DRAM memory */
- unsigned long bi_memsize; /* size of DRAM memory in bytes */
- unsigned long bi_flashstart; /* start of FLASH memory */
- unsigned long bi_flashsize; /* size of FLASH memory */
- unsigned long bi_flashoffset; /* reserved area for startup monitor */
- unsigned char bi_enetaddr[6];
-
- struct /* RAM configuration */
- {
- unsigned long start;
- unsigned long size;
- } bi_dram[CONFIG_NR_DRAM_BANKS];
-} bd_t;
-
/* For image.h:image_check_target_arch() */
#define IH_ARCH_DEFAULT IH_ARCH_RISCV
diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile
index b5e93244e0..6c503ff2b2 100644
--- a/arch/riscv/lib/Makefile
+++ b/arch/riscv/lib/Makefile
@@ -20,7 +20,9 @@ obj-$(CONFIG_SBI) += sbi.o
obj-$(CONFIG_SBI_IPI) += sbi_ipi.o
endif
obj-y += interrupts.o
+ifeq ($(CONFIG_$(SPL_)SYSRESET),)
obj-y += reset.o
+endif
obj-y += setjmp.o
obj-$(CONFIG_$(SPL_)SMP) += smp.o
obj-$(CONFIG_SPL_BUILD) += spl.o
diff --git a/arch/riscv/lib/andes_plic.c b/arch/riscv/lib/andes_plic.c
index 20529ab3eb..5cf29df670 100644
--- a/arch/riscv/lib/andes_plic.c
+++ b/arch/riscv/lib/andes_plic.c
@@ -30,20 +30,6 @@
#define SEND_IPI_TO_HART(hart) (0x80 >> (hart))
DECLARE_GLOBAL_DATA_PTR;
-static int init_plic(void);
-
-#define PLIC_BASE_GET(void) \
- do { \
- long *ret; \
- \
- if (!gd->arch.plic) { \
- ret = syscon_get_first_range(RISCV_SYSCON_PLIC); \
- if (IS_ERR(ret)) \
- return PTR_ERR(ret); \
- gd->arch.plic = ret; \
- init_plic(); \
- } \
- } while (0)
static int enable_ipi(int hart)
{
@@ -93,13 +79,21 @@ static int init_plic(void)
return -ENODEV;
}
-int riscv_send_ipi(int hart)
+int riscv_init_ipi(void)
{
- unsigned int ipi;
+ long *ret = syscon_get_first_range(RISCV_SYSCON_PLIC);
+
+ if (IS_ERR(ret))
+ return PTR_ERR(ret);
+ gd->arch.plic = ret;
+
+ return init_plic();
+}
- PLIC_BASE_GET();
+int riscv_send_ipi(int hart)
+{
+ unsigned int ipi = (SEND_IPI_TO_HART(hart) << (8 * gd->arch.boot_hart));
- ipi = (SEND_IPI_TO_HART(hart) << (8 * gd->arch.boot_hart));
writel(ipi, (void __iomem *)PENDING_REG(gd->arch.plic,
gd->arch.boot_hart));
@@ -110,8 +104,6 @@ int riscv_clear_ipi(int hart)
{
u32 source_id;
- PLIC_BASE_GET();
-
source_id = readl((void __iomem *)CLAIM_REG(gd->arch.plic, hart));
writel(source_id, (void __iomem *)CLAIM_REG(gd->arch.plic, hart));
@@ -120,8 +112,6 @@ int riscv_clear_ipi(int hart)
int riscv_get_ipi(int hart, int *pending)
{
- PLIC_BASE_GET();
-
*pending = readl((void __iomem *)PENDING_REG(gd->arch.plic,
gd->arch.boot_hart));
*pending = !!(*pending & SEND_IPI_TO_HART(hart));
diff --git a/arch/riscv/lib/fdt_fixup.c b/arch/riscv/lib/fdt_fixup.c
index 6db48ad04a..5b2420243f 100644
--- a/arch/riscv/lib/fdt_fixup.c
+++ b/arch/riscv/lib/fdt_fixup.c
@@ -4,6 +4,8 @@
*
*/
+#define LOG_CATEGORY LOGC_ARCH
+
#include <common.h>
#include <fdt_support.h>
#include <log.h>
@@ -37,18 +39,30 @@ int riscv_fdt_copy_resv_mem_node(const void *src, void *dst)
offset = fdt_path_offset(src, "/reserved-memory");
if (offset < 0) {
- printf("No reserved memory region found in source FDT\n");
+ log_debug("No reserved memory region found in source FDT\n");
return 0;
}
+ /*
+ * Extend the FDT by the following estimated size:
+ *
+ * Each PMP memory region entry occupies 64 bytes.
+ * With 16 PMP memory regions we need 64 * 16 = 1024 bytes.
+ */
+ err = fdt_open_into(dst, dst, fdt_totalsize(dst) + 1024);
+ if (err < 0) {
+ printf("Device Tree can't be expanded to accommodate new node");
+ return err;
+ }
+
fdt_for_each_subnode(node, src, offset) {
name = fdt_get_name(src, node, NULL);
- addr = fdtdec_get_addr_size_auto_noparent(src, node,
- "reg", 0, &size,
- false);
+ addr = fdtdec_get_addr_size_auto_parent(src, offset, node,
+ "reg", 0, &size,
+ false);
if (addr == FDT_ADDR_T_NONE) {
- debug("failed to read address/size for %s\n", name);
+ log_debug("failed to read address/size for %s\n", name);
continue;
}
strncpy(basename, name, max_len);
@@ -62,8 +76,8 @@ int riscv_fdt_copy_resv_mem_node(const void *src, void *dst)
pmp_mem.end = addr + size - 1;
err = fdtdec_add_reserved_memory(dst, basename, &pmp_mem,
&phandle);
- if (err < 0) {
- printf("failed to add reserved memory: %d\n", err);
+ if (err < 0 && err != -FDT_ERR_EXISTS) {
+ log_err("failed to add reserved memory: %d\n", err);
return err;
}
if (!fdt_getprop(src, node, "no-map", NULL))
@@ -82,10 +96,9 @@ int riscv_fdt_copy_resv_mem_node(const void *src, void *dst)
* @fdt: Pointer to the device tree in which reserved memory node needs to be
* added.
*
- * In RISC-V, any board compiled with OF_SEPARATE needs to copy the reserved
- * memory node from the device tree provided by the firmware to the device tree
- * used by U-Boot. This is a common function that individual board fixup
- * functions can invoke.
+ * In RISC-V, any board needs to copy the reserved memory node from the device
+ * tree provided by the firmware to the device tree used by U-Boot. This is a
+ * common function that individual board fixup functions can invoke.
*
* Return: 0 on success or error otherwise.
*/
@@ -95,6 +108,11 @@ int riscv_board_reserved_mem_fixup(void *fdt)
void *src_fdt_addr;
src_fdt_addr = map_sysmem(gd->arch.firmware_fdt_addr, 0);
+
+ /* avoid the copy if we are using the same device tree */
+ if (src_fdt_addr == fdt)
+ return 0;
+
err = riscv_fdt_copy_resv_mem_node(src_fdt_addr, fdt);
if (err < 0)
return err;
@@ -109,7 +127,7 @@ int board_fix_fdt(void *fdt)
err = riscv_board_reserved_mem_fixup(fdt);
if (err < 0) {
- printf("failed to fixup DT for reserved memory: %d\n", err);
+ log_err("failed to fixup DT for reserved memory: %d\n", err);
return err;
}
@@ -127,14 +145,14 @@ int arch_fixup_fdt(void *blob)
size = fdt_totalsize(blob);
err = fdt_open_into(blob, blob, size + 32);
if (err < 0) {
- printf("Device Tree can't be expanded to accommodate new node");
+ log_err("Device Tree can't be expanded to accommodate new node");
return err;
}
chosen_offset = fdt_path_offset(blob, "/chosen");
if (chosen_offset < 0) {
err = fdt_add_subnode(blob, 0, "chosen");
if (err < 0) {
- printf("chosen node can not be added\n");
+ log_err("chosen node cannot be added\n");
return err;
}
}
diff --git a/arch/riscv/lib/reset.c b/arch/riscv/lib/reset.c
index 8779c619cc..6008bbe78e 100644
--- a/arch/riscv/lib/reset.c
+++ b/arch/riscv/lib/reset.c
@@ -7,6 +7,7 @@
#include <command.h>
#include <hang.h>
+#ifndef CONFIG_SYSRESET
int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
printf("resetting ...\n");
@@ -16,3 +17,4 @@ int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
return 0;
}
+#endif
diff --git a/arch/riscv/lib/sbi_ipi.c b/arch/riscv/lib/sbi_ipi.c
index abafca9e5c..d02e2b4c48 100644
--- a/arch/riscv/lib/sbi_ipi.c
+++ b/arch/riscv/lib/sbi_ipi.c
@@ -8,6 +8,11 @@
#include <asm/encoding.h>
#include <asm/sbi.h>
+int riscv_init_ipi(void)
+{
+ return 0;
+}
+
int riscv_send_ipi(int hart)
{
ulong mask;
diff --git a/arch/riscv/lib/sifive_clint.c b/arch/riscv/lib/sifive_clint.c
index 5e0d25720b..78fc6c868d 100644
--- a/arch/riscv/lib/sifive_clint.c
+++ b/arch/riscv/lib/sifive_clint.c
@@ -24,22 +24,8 @@
DECLARE_GLOBAL_DATA_PTR;
-#define CLINT_BASE_GET(void) \
- do { \
- long *ret; \
- \
- if (!gd->arch.clint) { \
- ret = syscon_get_first_range(RISCV_SYSCON_CLINT); \
- if (IS_ERR(ret)) \
- return PTR_ERR(ret); \
- gd->arch.clint = ret; \
- } \
- } while (0)
-
int riscv_get_time(u64 *time)
{
- CLINT_BASE_GET();
-
*time = readq((void __iomem *)MTIME_REG(gd->arch.clint));
return 0;
@@ -47,17 +33,24 @@ int riscv_get_time(u64 *time)
int riscv_set_timecmp(int hart, u64 cmp)
{
- CLINT_BASE_GET();
-
writeq(cmp, (void __iomem *)MTIMECMP_REG(gd->arch.clint, hart));
return 0;
}
-int riscv_send_ipi(int hart)
+int riscv_init_ipi(void)
{
- CLINT_BASE_GET();
+ long *ret = syscon_get_first_range(RISCV_SYSCON_CLINT);
+
+ if (IS_ERR(ret))
+ return PTR_ERR(ret);
+ gd->arch.clint = ret;
+
+ return 0;
+}
+int riscv_send_ipi(int hart)
+{
writel(1, (void __iomem *)MSIP_REG(gd->arch.clint, hart));
return 0;
@@ -65,8 +58,6 @@ int riscv_send_ipi(int hart)
int riscv_clear_ipi(int hart)
{
- CLINT_BASE_GET();
-
writel(0, (void __iomem *)MSIP_REG(gd->arch.clint, hart));
return 0;
@@ -74,8 +65,6 @@ int riscv_clear_ipi(int hart)
int riscv_get_ipi(int hart, int *pending)
{
- CLINT_BASE_GET();
-
*pending = readl((void __iomem *)MSIP_REG(gd->arch.clint, hart));
return 0;
diff --git a/arch/riscv/lib/smp.c b/arch/riscv/lib/smp.c
index 17adb35730..ac22136314 100644
--- a/arch/riscv/lib/smp.c
+++ b/arch/riscv/lib/smp.c
@@ -12,38 +12,6 @@
DECLARE_GLOBAL_DATA_PTR;
-/**
- * riscv_send_ipi() - Send inter-processor interrupt (IPI)
- *
- * Platform code must provide this function.
- *
- * @hart: Hart ID of receiving hart
- * @return 0 if OK, -ve on error
- */
-extern int riscv_send_ipi(int hart);
-
-/**
- * riscv_clear_ipi() - Clear inter-processor interrupt (IPI)
- *
- * Platform code must provide this function.
- *
- * @hart: Hart ID of hart to be cleared
- * @return 0 if OK, -ve on error
- */
-extern int riscv_clear_ipi(int hart);
-
-/**
- * riscv_get_ipi() - Get status of inter-processor interrupt (IPI)
- *
- * Platform code must provide this function.
- *
- * @hart: Hart ID of hart to be checked
- * @pending: Pointer to variable with result of the check,
- * 1 if IPI is pending, 0 otherwise
- * @return 0 if OK, -ve on error
- */
-extern int riscv_get_ipi(int hart, int *pending);
-
static int send_ipi_many(struct ipi_data *ipi, int wait)
{
ofnode node, cpus;
@@ -124,7 +92,7 @@ void handle_ipi(ulong hart)
*/
ret = riscv_clear_ipi(hart);
if (ret) {
- pr_err("Cannot clear IPI of hart %ld\n", hart);
+ pr_err("Cannot clear IPI of hart %ld (error %d)\n", hart, ret);
return;
}
@@ -133,14 +101,11 @@ void handle_ipi(ulong hart)
int smp_call_function(ulong addr, ulong arg0, ulong arg1, int wait)
{
- int ret = 0;
- struct ipi_data ipi;
-
- ipi.addr = addr;
- ipi.arg0 = arg0;
- ipi.arg1 = arg1;
-
- ret = send_ipi_many(&ipi, wait);
+ struct ipi_data ipi = {
+ .addr = addr,
+ .arg0 = arg0,
+ .arg1 = arg1,
+ };
- return ret;
+ return send_ipi_many(&ipi, wait);
}
generated by cgit (git 2.34.1) at 2025-01-23 22:41:45 +0000