From: Nick Hawkins nick.hawkins@hpe.com
The GXP is the HPE BMC SoC that is used in the majority of current generation HPE servers. Traditionally the asic will last multiple generations of server before being replaced.
Info about SoC:
HPE GXP is the name of the HPE Soc. This SoC is used to implement many BMC features at HPE. It supports ARMv7 architecture based on the Cortex A9 core. It is capable of using an AXI bus to whicha memory controller is attached. It has multiple SPI interfaces to connect boot flash and BIOS flash. It uses a 10/100/1000 MAC for network connectivity. It has multiple i2c engines to drive connectivity with a host infrastructure. There currently are no public specifications but this process is being worked.
Signed-off-by: Nick Hawkins nick.hawkins@hpe.com --- arch/arm/Kconfig | 8 ++++++++ arch/arm/Makefile | 1 + arch/arm/mach-hpe/Makefile | 1 + arch/arm/mach-hpe/gxp/Kconfig | 9 +++++++++ arch/arm/mach-hpe/gxp/Makefile | 1 + arch/arm/mach-hpe/gxp/reset.c | 26 ++++++++++++++++++++++++++ 6 files changed, 46 insertions(+) create mode 100644 arch/arm/mach-hpe/Makefile create mode 100644 arch/arm/mach-hpe/gxp/Kconfig create mode 100644 arch/arm/mach-hpe/gxp/Makefile create mode 100644 arch/arm/mach-hpe/gxp/reset.c
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 9898c7d68e..1f9fc1bb8e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -2085,6 +2085,12 @@ config TARGET_XENGUEST_ARM64 select SSCANF imply OF_HAS_PRIOR_STAGE
+config ARCH_GXP + bool "Support HPE GXP SoCs" + select DM + select OF_CONTROL + imply CMD_DM + endchoice
config SUPPORT_PASSING_ATAGS @@ -2193,6 +2199,8 @@ source "arch/arm/mach-davinci/Kconfig"
source "arch/arm/mach-exynos/Kconfig"
+source "arch/arm/mach-hpe/gxp/Kconfig" + source "arch/arm/mach-highbank/Kconfig"
source "arch/arm/mach-integrator/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 85c23bcf77..cfaa38594c 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -62,6 +62,7 @@ machine-$(CONFIG_ARCH_BCM283X) += bcm283x machine-$(CONFIG_ARCH_BCMSTB) += bcmstb machine-$(CONFIG_ARCH_DAVINCI) += davinci machine-$(CONFIG_ARCH_EXYNOS) += exynos +machine-$(CONFIG_ARCH_GXP) += hpe machine-$(CONFIG_ARCH_HIGHBANK) += highbank machine-$(CONFIG_ARCH_IPQ40XX) += ipq40xx machine-$(CONFIG_ARCH_K3) += k3 diff --git a/arch/arm/mach-hpe/Makefile b/arch/arm/mach-hpe/Makefile new file mode 100644 index 0000000000..afe5f7a29e --- /dev/null +++ b/arch/arm/mach-hpe/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_SOC_GXP) += gxp/ diff --git a/arch/arm/mach-hpe/gxp/Kconfig b/arch/arm/mach-hpe/gxp/Kconfig new file mode 100644 index 0000000000..2d43133ab0 --- /dev/null +++ b/arch/arm/mach-hpe/gxp/Kconfig @@ -0,0 +1,9 @@ +if ARCH_GXP + +config SOC_GXP + bool + select CPU_V7A + +source "board/hpe/gxp/Kconfig" + +endif diff --git a/arch/arm/mach-hpe/gxp/Makefile b/arch/arm/mach-hpe/gxp/Makefile new file mode 100644 index 0000000000..f3cc6684b8 --- /dev/null +++ b/arch/arm/mach-hpe/gxp/Makefile @@ -0,0 +1 @@ +obj-y += reset.o diff --git a/arch/arm/mach-hpe/gxp/reset.c b/arch/arm/mach-hpe/gxp/reset.c new file mode 100644 index 0000000000..4d4d5f015f --- /dev/null +++ b/arch/arm/mach-hpe/gxp/reset.c @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * GXP driver + * + * (C) Copyright 2022 Hewlett Packard Enterprise Development LP. + * Author: Nick Hawkins nick.hawkins@hpe.com + * Author: Jean-Marie Verdun verdun@hpe.com + */ + +#include <common.h> +#include <asm/io.h> + +#define GXP_CCR 0xc0000000 + +/* empty to satisfy current lowlevel_init, can be removed any time */ +void lowlevel_init(void) +{ +} + +void reset_cpu(ulong ignored) +{ + writel(1, GXP_CCR); + + while (1) + ; /* loop forever till reset */ +}