Commit 11d89440 authored by Nick Hawkins's avatar Nick Hawkins Committed by Arnd Bergmann
Browse files

ARM: hpe: Introduce the HPE GXP architecture 



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.

Previously there was a requirement to reset the EHCI controller for the
asic to boot. This functionality has been moved to the u-boot
bootloader.

Signed-off-by: default avatarNick Hawkins <nick.hawkins@hpe.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 31231092

arch/arm/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -620,6 +620,8 @@ source "arch/arm/mach-highbank/Kconfig" 


source "arch/arm/mach-hisi/Kconfig"



source "arch/arm/mach-hpe/Kconfig"



source "arch/arm/mach-imx/Kconfig"



source "arch/arm/mach-integrator/Kconfig"

arch/arm/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -179,6 +179,7 @@ machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge 
machine-$(CONFIG_ARCH_GEMINI)		+= gemini

machine-$(CONFIG_ARCH_HIGHBANK)		+= highbank

machine-$(CONFIG_ARCH_HISI)		+= hisi

machine-$(CONFIG_ARCH_HPE)		+= hpe

machine-$(CONFIG_ARCH_INTEGRATOR)	+= integrator

machine-$(CONFIG_ARCH_IOP32X)		+= iop32x

machine-$(CONFIG_ARCH_IXP4XX)		+= ixp4xx

arch/arm/mach-hpe/Kconfig

0 → 100644
+23 −0
Original line number Diff line number Diff line 
menuconfig ARCH_HPE

	bool "HPE SoC support"

	depends on ARCH_MULTI_V7

	help

	  This enables support for HPE ARM based BMC chips.

if ARCH_HPE



config ARCH_HPE_GXP

	bool "HPE GXP SoC"

	depends on ARCH_MULTI_V7

	select ARM_VIC

	select GENERIC_IRQ_CHIP

	select CLKSRC_MMIO

	help

	  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 which a 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.



endif

arch/arm/mach-hpe/Makefile

0 → 100644
+1 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_ARCH_HPE_GXP) += gxp.o

arch/arm/mach-hpe/gxp.c

0 → 100644
+16 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/* Copyright (C) 2022 Hewlett-Packard Enterprise Development Company, L.P. */



#include <linux/of_platform.h>

#include <asm/mach/arch.h>



static const char * const gxp_board_dt_compat[] = {

	"hpe,gxp",

	NULL,

};



DT_MACHINE_START(GXP_DT, "HPE GXP")

	.dt_compat	= gxp_board_dt_compat,

	.l2c_aux_val = 0,

	.l2c_aux_mask = ~0,

MACHINE_END