MIPS: mobileye: Add EyeQ6H support

EyeQ6H (or “High”) is an other SoC from Mobileye still based on the
MIPS I6500 architecture as the EyeQ5. The 2 clusters of this SoC
contains 4 cores which are capable of running 4 threads. Besides this,
it features multiple controllers such as the classic UART, high speed
I2C, SPI, as well as CAN-FD, PCIe Gen4, Octal/Quad SPI Flash
interface, Gigabit Ethernet, MIPI CSI-2, MIPI DSI, and eMMC 5.1. It
also includes a Hardware Security Module, Functional Safety Hardware,
and video encoders and more.

This commit provides the infrastructure to build a kernel running on
EyeQ6H SoC. For now the support is limited and only one CPU core is
running.

Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/Kbuild.platforms

@@ -8,6 +8,7 @@ platform-$(CONFIG_BCM47XX)		+= bcm47xx/
 platform-$(CONFIG_BCM63XX)		+= bcm63xx/
 platform-$(CONFIG_BMIPS_GENERIC)	+= bmips/
 platform-$(CONFIG_CAVIUM_OCTEON_SOC)	+= cavium-octeon/
+platform-$(CONFIG_EYEQ)			+= mobileye/
 platform-$(CONFIG_MIPS_COBALT)		+= cobalt/
 platform-$(CONFIG_MACH_DECSTATION)	+= dec/
 platform-$(CONFIG_MIPS_GENERIC)		+= generic/
@@ -17,7 +18,6 @@ platform-$(CONFIG_MACH_LOONGSON2EF)	+= loongson2ef/
 platform-$(CONFIG_MACH_LOONGSON32)	+= loongson32/
 platform-$(CONFIG_MACH_LOONGSON64)	+= loongson64/
 platform-$(CONFIG_MIPS_MALTA)		+= mti-malta/
-platform-$(CONFIG_MACH_EYEQ5)		+= mobileye/
 platform-$(CONFIG_MACH_NINTENDO64)	+= n64/
 platform-$(CONFIG_PIC32MZDA)		+= pic32/
 platform-$(CONFIG_RALINK)		+= ralink/

arch/mips/Kconfig

@@ -575,8 +575,8 @@ config MACH_PIC32
 	  Microchip PIC32 is a family of general-purpose 32 bit MIPS core
 	  microcontrollers.
 
-config MACH_EYEQ5
-	bool "Mobileye EyeQ5 SoC"
+config EYEQ
+	bool "Mobileye EyeQ SoC"
 	select MACH_GENERIC_CORE
 	select ARM_AMBA
 	select PHYSICAL_START_BOOL
@@ -615,7 +615,7 @@ config MACH_EYEQ5
 	select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
 	select USE_OF
 	help
-	  Select this to build a kernel supporting EyeQ5 SoC from Mobileye.
+	  Select this to build a kernel supporting EyeQ SoC from Mobileye.
 
 	bool
 
@@ -1021,6 +1021,7 @@ source "arch/mips/generic/Kconfig"
 source "arch/mips/ingenic/Kconfig"
 source "arch/mips/jazz/Kconfig"
 source "arch/mips/lantiq/Kconfig"
+source "arch/mips/mobileye/Kconfig"
 source "arch/mips/pic32/Kconfig"
 source "arch/mips/ralink/Kconfig"
 source "arch/mips/sgi-ip27/Kconfig"

arch/mips/boot/dts/Makefile

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 subdir-$(CONFIG_BMIPS_GENERIC)		+= brcm
 subdir-$(CONFIG_CAVIUM_OCTEON_SOC)	+= cavium-octeon
+subdir-$(CONFIG_EYEQ)			+= mobileye
 subdir-$(CONFIG_FIT_IMAGE_FDT_MARDUK)   += img
 subdir-$(CONFIG_FIT_IMAGE_FDT_BOSTON)	+= img
 subdir-$(CONFIG_MACH_INGENIC)		+= ingenic
@@ -8,7 +9,6 @@ subdir-$(CONFIG_LANTIQ)			+= lantiq
 subdir-$(CONFIG_MACH_LOONGSON64)	+= loongson
 subdir-$(CONFIG_SOC_VCOREIII)		+= mscc
 subdir-$(CONFIG_MIPS_MALTA)		+= mti
-subdir-$(CONFIG_MACH_EYEQ5)		+= mobileye
 subdir-$(CONFIG_LEGACY_BOARD_SEAD3)	+= mti
 subdir-$(CONFIG_FIT_IMAGE_FDT_NI169445)	+= ni
 subdir-$(CONFIG_MACH_PIC32)		+= pic32

arch/mips/boot/dts/mobileye/Makefile

@@ -2,3 +2,4 @@
 # Copyright 2023 Mobileye Vision Technologies Ltd.
 
 dtb-$(CONFIG_MACH_EYEQ5)		+= eyeq5-epm5.dtb
+dtb-$(CONFIG_MACH_EYEQ6H)		+= eyeq6h-epm6.dtb

arch/mips/configs/eyeq5_defconfig

@@ -18,6 +18,7 @@ CONFIG_USER_NS=y
 CONFIG_SCHED_AUTOGROUP=y
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
+CONFIG_EYEQ=y
 CONFIG_MACH_EYEQ5=y
 CONFIG_FIT_IMAGE_FDT_EPM5=y
 CONFIG_PAGE_SIZE_16KB=y

arch/mips/configs/eyeq6_defconfig

@@ -0,0 +1,111 @@
+CONFIG_SYSVIPC=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BPF_SYSCALL=y
+CONFIG_TASKSTATS=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_MEMCG=y
+CONFIG_BLK_CGROUP=y
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_RT_GROUP_SCHED=y
+CONFIG_CGROUP_PIDS=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CPUSETS=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_NAMESPACES=y
+CONFIG_USER_NS=y
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_EXPERT=y
+CONFIG_EYEQ=y
+CONFIG_MACH_EYEQ6H=y
+CONFIG_MIPS_CPS=y
+CONFIG_CPU_HAS_MSA=y
+CONFIG_NR_CPUS=16
+CONFIG_MIPS_RAW_APPENDED_DTB=y
+CONFIG_JUMP_LABEL=y
+CONFIG_PAGE_SIZE_16KB=y
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_TRIM_UNUSED_KSYMS=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_SPARSEMEM_MANUAL=y
+CONFIG_USERFAULTFD=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_NET_KEY=y
+CONFIG_INET=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_NETFILTER=y
+CONFIG_CAN=y
+CONFIG_PCI=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_DEBUG=y
+CONFIG_PCI_ENDPOINT=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_CONNECTOR=y
+CONFIG_MTD=y
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BLOCK=y
+CONFIG_SCSI=y
+CONFIG_NETDEVICES=y
+CONFIG_MACVLAN=y
+CONFIG_IPVLAN=y
+CONFIG_MACB=y
+CONFIG_MARVELL_PHY=y
+CONFIG_MICREL_PHY=y
+CONFIG_CAN_M_CAN=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_HW_RANDOM=y
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=y
+# CONFIG_PTP_1588_CLOCK is not set
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_SINGLE=y
+CONFIG_MFD_SYSCON=y
+CONFIG_HID_A4TECH=y
+CONFIG_HID_BELKIN=y
+CONFIG_HID_CHERRY=y
+CONFIG_HID_CYPRESS=y
+CONFIG_HID_EZKEY=y
+CONFIG_HID_ITE=y
+CONFIG_HID_KENSINGTON=y
+CONFIG_HID_REDRAGON=y
+CONFIG_HID_MICROSOFT=y
+CONFIG_HID_MONTEREY=y
+CONFIG_MMC=y
+CONFIG_MMC_SDHCI=y
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_RESET_CONTROLLER=y
+# CONFIG_NVMEM is not set
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_FS_ENCRYPTION=y
+CONFIG_FUSE_FS=y
+CONFIG_CUSE=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_UBIFS_FS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_NFS_V4_1=y
+CONFIG_NFS_V4_2=y
+CONFIG_ROOT_NFS=y
+CONFIG_CRYPTO_CRC32_MIPS=y
+CONFIG_FRAME_WARN=1024
+CONFIG_DEBUG_FS=y
+# CONFIG_RCU_TRACE is not set
+# CONFIG_FTRACE is not set
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE="earlycon"

arch/mips/mobileye/Kconfig

@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: GPL-2.0
+if EYEQ
+
+choice
+	prompt "Mobileye EyeQ SoC selection"
+	default MACH_EYEQ5
+	help
+	  Select Mobileye EyeQ MIPS SoC type.
+
+	config MACH_EYEQ5
+		bool "Mobileye EyeQ5 SoC"
+
+	config MACH_EYEQ6H
+		bool "Mobileye EyeQ6H SoC"
+endchoice
+
+config FIT_IMAGE_FDT_EPM5
+	bool "Include FDT for Mobileye EyeQ5 development platforms"
+	depends on MACH_EYEQ5
+	default n
+	help
+	  Enable this to include the FDT for the EyeQ5 development platforms
+	  from Mobileye in the FIT kernel image.
+	  This requires u-boot on the platform.
+
+endif

arch/mips/mobileye/Platform

@@ -9,6 +9,7 @@
 #
 
 load-$(CONFIG_MACH_EYEQ5)	= 0xa800000808000000
+load-$(CONFIG_MACH_EYEQ6H)	= 0xa800000100800000
 all-$(CONFIG_MACH_EYEQ5)	+= vmlinux.gz.itb
 
 its-y					:= vmlinux.its.S