diff options
| -rw-r--r-- | Documentation/devicetree/bindings/arm/cpus.yaml | 1 | ||||
| -rw-r--r-- | arch/arm/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-aspeed/Kconfig | 17 | ||||
| -rw-r--r-- | arch/arm/mach-aspeed/Makefile | 5 | ||||
| -rw-r--r-- | arch/arm/mach-aspeed/platsmp.c | 61 |
5 files changed, 83 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml index aa40b074b864..727e0ffc702b 100644 --- a/Documentation/devicetree/bindings/arm/cpus.yaml +++ b/Documentation/devicetree/bindings/arm/cpus.yaml @@ -175,6 +175,7 @@ properties: - amlogic,meson8-smp - amlogic,meson8b-smp - arm,realview-smp + - aspeed,ast2600-smp - brcm,bcm11351-cpu-method - brcm,bcm23550 - brcm,bcm2836-smp diff --git a/arch/arm/Makefile b/arch/arm/Makefile index c96bc7e1cbd6..f9002e44f18f 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -155,6 +155,7 @@ textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 machine-$(CONFIG_ARCH_ACTIONS) += actions machine-$(CONFIG_ARCH_ALPINE) += alpine machine-$(CONFIG_ARCH_ARTPEC) += artpec +machine-$(CONFIG_ARCH_ASPEED) += aspeed machine-$(CONFIG_ARCH_AT91) += at91 machine-$(CONFIG_ARCH_AXXIA) += axxia machine-$(CONFIG_ARCH_BCM) += bcm diff --git a/arch/arm/mach-aspeed/Kconfig b/arch/arm/mach-aspeed/Kconfig index a15c3a291386..56007b0b6120 100644 --- a/arch/arm/mach-aspeed/Kconfig +++ b/arch/arm/mach-aspeed/Kconfig @@ -1,11 +1,10 @@ # SPDX-License-Identifier: GPL-2.0-only menuconfig ARCH_ASPEED bool "Aspeed BMC architectures" - depends on ARCH_MULTI_V5 || ARCH_MULTI_V6 + depends on ARCH_MULTI_V5 || ARCH_MULTI_V6 || ARCH_MULTI_V7 select SRAM select WATCHDOG select ASPEED_WATCHDOG - select FTTMR010_TIMER select MFD_SYSCON select PINCTRL help @@ -18,6 +17,7 @@ config MACH_ASPEED_G4 depends on ARCH_MULTI_V5 select CPU_ARM926T select PINCTRL_ASPEED_G4 + select FTTMR010_TIMER help Say yes if you intend to run on an Aspeed ast2400 or similar fourth generation BMCs, such as those used by OpenPower Power8 @@ -28,8 +28,21 @@ config MACH_ASPEED_G5 depends on ARCH_MULTI_V6 select CPU_V6 select PINCTRL_ASPEED_G5 + select FTTMR010_TIMER help Say yes if you intend to run on an Aspeed ast2500 or similar fifth generation Aspeed BMCs. +config MACH_ASPEED_G6 + bool "Aspeed SoC 6th Generation" + depends on ARCH_MULTI_V7 + select CPU_V7 + select PINCTRL_ASPEED_G6 + select ARM_GIC + select HAVE_ARM_ARCH_TIMER + select HAVE_SMP + help + Say yes if you intend to run on an Aspeed ast2600 or similar + sixth generation Aspeed BMCs. + endif diff --git a/arch/arm/mach-aspeed/Makefile b/arch/arm/mach-aspeed/Makefile new file mode 100644 index 000000000000..1951b3317a76 --- /dev/null +++ b/arch/arm/mach-aspeed/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) ASPEED Technology Inc. +# Copyright IBM Corp. + +obj-$(CONFIG_SMP) += platsmp.o diff --git a/arch/arm/mach-aspeed/platsmp.c b/arch/arm/mach-aspeed/platsmp.c new file mode 100644 index 000000000000..2324becf7991 --- /dev/null +++ b/arch/arm/mach-aspeed/platsmp.c @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// Copyright (C) ASPEED Technology Inc. +// Copyright IBM Corp. + +#include <linux/of_address.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/smp.h> + +#define BOOT_ADDR 0x00 +#define BOOT_SIG 0x04 + +static struct device_node *secboot_node; + +static int aspeed_g6_boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + void __iomem *base; + + base = of_iomap(secboot_node, 0); + if (!base) { + pr_err("could not map the secondary boot base!"); + return -ENODEV; + } + + writel_relaxed(0, base + BOOT_ADDR); + writel_relaxed(__pa_symbol(secondary_startup_arm), base + BOOT_ADDR); + writel_relaxed((0xABBAAB00 | (cpu & 0xff)), base + BOOT_SIG); + + dsb_sev(); + + iounmap(base); + + return 0; +} + +static void __init aspeed_g6_smp_prepare_cpus(unsigned int max_cpus) +{ + void __iomem *base; + + secboot_node = of_find_compatible_node(NULL, NULL, "aspeed,ast2600-smpmem"); + if (!secboot_node) { + pr_err("secboot device node found!!\n"); + return; + } + + base = of_iomap(secboot_node, 0); + if (!base) { + pr_err("could not map the secondary boot base!"); + return; + } + __raw_writel(0xBADABABA, base + BOOT_SIG); + + iounmap(base); +} + +static const struct smp_operations aspeed_smp_ops __initconst = { + .smp_prepare_cpus = aspeed_g6_smp_prepare_cpus, + .smp_boot_secondary = aspeed_g6_boot_secondary, +}; + +CPU_METHOD_OF_DECLARE(aspeed_smp, "aspeed,ast2600-smp", &aspeed_smp_ops); |