riscv: Rename SiFive CLINT to RISC-V ALINT

As the RISC-V ACLINT specification is defined to be backward compatible with the SiFive CLINT specification, we rename SiFive CLINT to RISC-V ALINT in the source tree to be future-proof. Signed-off-by: Bin Meng <[email protected]> Series-to: [email protected] Cover-letter: riscv: Add ACLINT mtimer and mswi devices support This RISC-V ACLINT specification [1] defines a set of memory mapped devices which provide inter-processor interrupts (IPI) and timer functionalities for each HART on a multi-HART RISC-V platform. This seriesl updates U-Boot existing SiFive CLINT driver to handle the ACLINT changes, and is now able to support both CLINT and ACLINT. With this series, U-Boot is able to boot on: - QEMU 'virt' machine with 'aclint=on' - Rocket Chip with ACLINT changes [2] [1] https://github.com/riscv/riscv-aclint/blob/main/riscv-aclint.adoc [2] chipsalliance/rocket-chip#3330 END
lbmeng · Jun 12, 2023 · 2476058 · 2476058
1 parent 1cd8931
commit 2476058
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Showing 14 changed files with 35 additions and 35 deletions.
diff --git a/MAINTAINERS b/MAINTAINERS
@@ -1328,7 +1328,7 @@ F:	doc/arch/riscv.rst
 F:	doc/usage/sbi.rst
 F:	drivers/sysreset/sysreset_sbi.c
 F:	drivers/timer/andes_plmt_timer.c
-F:	drivers/timer/sifive_clint_timer.c
+F:	drivers/timer/riscv_aclint_timer.c
 F:	tools/prelink-riscv.c
 
 RISC-V CANAAN KENDRYTE K210

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
@@ -185,22 +185,22 @@ config DMA_ADDR_T_64BIT
 	bool
 	default y if 64BIT
 
-config SIFIVE_CLINT
+config RISCV_ACLINT
 	bool
 	depends on RISCV_MMODE
 	select REGMAP
 	select SYSCON
 	help
-	  The SiFive CLINT block holds memory-mapped control and status registers
+	  The RISC-V ACLINT block holds memory-mapped control and status registers
 	  associated with software and timer interrupts.
 
-config SPL_SIFIVE_CLINT
+config SPL_RISCV_ACLINT
 	bool
 	depends on SPL_RISCV_MMODE
 	select SPL_REGMAP
 	select SPL_SYSCON
 	help
-	  The SiFive CLINT block holds memory-mapped control and status registers
+	  The RISC-V ACLINT block holds memory-mapped control and status registers
 	  associated with software and timer interrupts.
 
 config SIFIVE_CACHE

diff --git a/arch/riscv/cpu/fu540/Kconfig b/arch/riscv/cpu/fu540/Kconfig
@@ -11,7 +11,7 @@ config SIFIVE_FU540
 	imply CPU
 	imply CPU_RISCV
 	imply RISCV_TIMER if (RISCV_SMODE || SPL_RISCV_SMODE)
-	imply SPL_SIFIVE_CLINT
+	imply SPL_RISCV_ACLINT
 	imply CMD_CPU
 	imply SPL_CPU
 	imply SPL_OPENSBI

diff --git a/arch/riscv/cpu/fu740/Kconfig b/arch/riscv/cpu/fu740/Kconfig
@@ -11,7 +11,7 @@ config SIFIVE_FU740
 	imply CPU
 	imply CPU_RISCV
 	imply RISCV_TIMER if (RISCV_SMODE || SPL_RISCV_SMODE)
-	imply SPL_SIFIVE_CLINT
+	imply SPL_RISCV_ACLINT
 	imply CMD_CPU
 	imply SPL_CPU
 	imply SPL_OPENSBI

diff --git a/arch/riscv/cpu/generic/Kconfig b/arch/riscv/cpu/generic/Kconfig
@@ -9,8 +9,8 @@ config GENERIC_RISCV
 	imply CPU
 	imply CPU_RISCV
 	imply RISCV_TIMER if (RISCV_SMODE || SPL_RISCV_SMODE)
-	imply SIFIVE_CLINT if RISCV_MMODE
-	imply SPL_SIFIVE_CLINT if SPL_RISCV_MMODE
+	imply RISCV_ACLINT if RISCV_MMODE
+	imply SPL_RISCV_ACLINT if SPL_RISCV_MMODE
 	imply CMD_CPU
 	imply SPL_CPU
 	imply SPL_OPENSBI

diff --git a/arch/riscv/cpu/jh7110/Kconfig b/arch/riscv/cpu/jh7110/Kconfig
@@ -25,4 +25,4 @@ config STARFIVE_JH7110
 	imply SPL_CPU
 	imply SPL_LOAD_FIT
 	imply SPL_OPENSBI
-	imply SPL_SIFIVE_CLINT
+	imply SPL_RISCV_ACLINT
diff --git a/arch/riscv/include/asm/global_data.h b/arch/riscv/include/asm/global_data.h
@@ -18,8 +18,8 @@
 struct arch_global_data {
 	long boot_hart;		/* boot hart id */
 	phys_addr_t firmware_fdt_addr;
-#if CONFIG_IS_ENABLED(SIFIVE_CLINT)
-	void __iomem *clint;	/* clint base address */
+#if CONFIG_IS_ENABLED(RISCV_ACLINT)
+	void __iomem *aclint;	/* aclint base address */
 #endif
 #ifdef CONFIG_ANDES_PLICSW
 	void __iomem *plicsw;	/* andes plicsw base address */

diff --git a/arch/riscv/include/asm/syscon.h b/arch/riscv/include/asm/syscon.h
@@ -12,7 +12,7 @@
  */
 enum {
 	RISCV_NONE,
-	RISCV_SYSCON_CLINT,	/* Core Local Interruptor (CLINT) */
+	RISCV_SYSCON_ACLINT,	/* Advanced Core Local Interruptor (ACLINT) */
 	RISCV_SYSCON_PLICSW,	/* Andes PLICSW */
 };
 

diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile
@@ -12,7 +12,7 @@ obj-$(CONFIG_CMD_GO) += boot.o
 obj-y	+= cache.o
 obj-$(CONFIG_SIFIVE_CACHE) += sifive_cache.o
 ifeq ($(CONFIG_$(SPL_)RISCV_MMODE),y)
-obj-$(CONFIG_$(SPL_)SIFIVE_CLINT) += sifive_clint.o
+obj-$(CONFIG_$(SPL_)RISCV_ACLINT) += aclint_ipi.o
 obj-$(CONFIG_ANDES_PLICSW) += andes_plicsw.o
 else
 obj-$(CONFIG_SBI) += sbi.o

diff --git a/arch/riscv/lib/sifive_clint.c → arch/riscv/lib/aclint_ipi.c b/arch/riscv/lib/sifive_clint.c → arch/riscv/lib/aclint_ipi.c
@@ -29,44 +29,44 @@ int riscv_init_ipi(void)
 	struct udevice *dev;
 
 	ret = uclass_get_device_by_driver(UCLASS_TIMER,
-					  DM_DRIVER_GET(sifive_clint), &dev);
+					  DM_DRIVER_GET(riscv_aclint_timer), &dev);
 	if (ret)
 		return ret;
 
 	if (dev_get_driver_data(dev) != 0)
-		gd->arch.clint = dev_read_addr_ptr(dev);
+		gd->arch.aclint = dev_read_addr_ptr(dev);
 	else
-		gd->arch.clint = syscon_get_first_range(RISCV_SYSCON_CLINT);
+		gd->arch.aclint = syscon_get_first_range(RISCV_SYSCON_ACLINT);
 
-	if (!gd->arch.clint)
+	if (!gd->arch.aclint)
 		return -EINVAL;
 
 	return 0;
 }
 
 int riscv_send_ipi(int hart)
 {
-	writel(1, (void __iomem *)MSIP_REG(gd->arch.clint, hart));
+	writel(1, (void __iomem *)MSIP_REG(gd->arch.aclint, hart));
 
 	return 0;
 }
 
 int riscv_clear_ipi(int hart)
 {
-	writel(0, (void __iomem *)MSIP_REG(gd->arch.clint, hart));
+	writel(0, (void __iomem *)MSIP_REG(gd->arch.aclint, hart));
 
 	return 0;
 }
 
 int riscv_get_ipi(int hart, int *pending)
 {
-	*pending = readl((void __iomem *)MSIP_REG(gd->arch.clint, hart));
+	*pending = readl((void __iomem *)MSIP_REG(gd->arch.aclint, hart));
 
 	return 0;
 }
 
 static const struct udevice_id riscv_aclint_swi_ids[] = {
-	{ .compatible = "riscv,aclint-mswi", .data = RISCV_SYSCON_CLINT },
+	{ .compatible = "riscv,aclint-mswi", .data = RISCV_SYSCON_ACLINT },
 	{ }
 };
 

diff --git a/board/openpiton/riscv64/Kconfig b/board/openpiton/riscv64/Kconfig
@@ -29,7 +29,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select SUPPORT_SPL
 	imply CPU_RISCV
 	imply RISCV_TIMER
-	imply SPL_SIFIVE_CLINT
+	imply SPL_RISCV_ACLINT
 	imply CMD_CPU
 	imply SPL_CPU_SUPPORT
 	imply SPL_SMP

diff --git a/board/sipeed/maix/Kconfig b/board/sipeed/maix/Kconfig
@@ -34,7 +34,7 @@ config BOARD_SPECIFIC_OPTIONS
 	imply SMP
 	imply DM_SERIAL
 	imply SIFIVE_SERIAL
-	imply SIFIVE_CLINT
+	imply RISCV_ACLINT
 	imply POWER_DOMAIN
 	imply SIMPLE_PM_BUS
 	imply CLK_K210

diff --git a/drivers/timer/Makefile b/drivers/timer/Makefile
@@ -25,7 +25,7 @@ obj-$(CONFIG_RISCV_TIMER) += riscv_timer.o
 obj-$(CONFIG_ROCKCHIP_TIMER) += rockchip_timer.o
 obj-$(CONFIG_SANDBOX_TIMER)	+= sandbox_timer.o
 obj-$(CONFIG_SP804_TIMER)	+= sp804_timer.o
-obj-$(CONFIG_$(SPL_)SIFIVE_CLINT) += sifive_clint_timer.o
+obj-$(CONFIG_$(SPL_)RISCV_ACLINT) += riscv_aclint_timer.o
 obj-$(CONFIG_ARM_GLOBAL_TIMER)	+= arm_global_timer.o
 obj-$(CONFIG_STM32_TIMER)	+= stm32_timer.o
 obj-$(CONFIG_TEGRA_TIMER)	+= tegra-timer.o

diff --git a/drivers/timer/sifive_clint_timer.c → drivers/timer/riscv_aclint_timer.c b/drivers/timer/sifive_clint_timer.c → drivers/timer/riscv_aclint_timer.c
@@ -18,7 +18,7 @@
 /* mtime register */
 #define MTIME_REG(base, offset)		((ulong)(base) + (offset))
 
-static u64 notrace sifive_clint_get_count(struct udevice *dev)
+static u64 notrace riscv_aclint_timer_get_count(struct udevice *dev)
 {
 	return readq((void __iomem *)MTIME_REG(dev_get_priv(dev),
 					       dev_get_driver_data(dev)));
@@ -44,11 +44,11 @@ u64 notrace timer_early_get_count(void)
 }
 #endif
 
-static const struct timer_ops sifive_clint_ops = {
-	.get_count = sifive_clint_get_count,
+static const struct timer_ops riscv_aclint_timer_ops = {
+	.get_count = riscv_aclint_timer_get_count,
 };
 
-static int sifive_clint_probe(struct udevice *dev)
+static int riscv_aclint_timer_probe(struct udevice *dev)
 {
 	dev_set_priv(dev, dev_read_addr_ptr(dev));
 	if (!dev_get_priv(dev))
@@ -57,18 +57,18 @@ static int sifive_clint_probe(struct udevice *dev)
 	return timer_timebase_fallback(dev);
 }
 
-static const struct udevice_id sifive_clint_ids[] = {
+static const struct udevice_id riscv_aclint_timer_ids[] = {
 	{ .compatible = "riscv,clint0", .data = CLINT_MTIME_OFFSET },
 	{ .compatible = "sifive,clint0", .data = CLINT_MTIME_OFFSET },
 	{ .compatible = "riscv,aclint-mtimer", .data = ACLINT_MTIME_OFFSET },
 	{ }
 };
 
-U_BOOT_DRIVER(sifive_clint) = {
-	.name		= "sifive_clint",
+U_BOOT_DRIVER(riscv_aclint_timer) = {
+	.name		= "riscv_aclint_timer",
 	.id		= UCLASS_TIMER,
-	.of_match	= sifive_clint_ids,
-	.probe		= sifive_clint_probe,
-	.ops		= &sifive_clint_ops,
+	.of_match	= riscv_aclint_timer_ids,
+	.probe		= riscv_aclint_timer_probe,
+	.ops		= &riscv_aclint_timer_ops,
 	.flags		= DM_FLAG_PRE_RELOC,
 };