bcm27xx: add new bcm2712 subtarget

This patch adds support for Raspberry Pi 5.

Instead of using 16K pages like Raspberry Pi OS, OpenWrt uses 4K pages due to
incompatibilities with F2FS and other applications.
There are multiple RPi forum posts with different cases and users are forcing
kernel8.img to workaround them, which is the 64 bit kernel of the RPi 4.
However, this isn't possible in OpenWrt because we only ship one kernel and we
would have to add RPi 5 support to bcm2711 subtarget (RPi 4) for that
workaround to work in OpenWrt.

Specification:
- Processor Broadcom BCM2712 2.4GHz quad-core 64-bit Arm Cortex-A76 CPU,
  with cryptographic extension, 512KB L2 caches per core, 2048KB L3 cache
Features:
- VideoCore VII GPU, supports OpenGL ES 3.1, Vulkan 1.2
- Dual 4Kp60 HDMI display output with HDR support 4Kp60 HEVC decoder
- LPDDR4X-4267 SDRAM 4GB and 8GB
- Dual-band 802.11ac Wi-Fi
- Bluetooth 5.0 / Bluetooth Low Energy
- microSD card slot, with support for SDR104 high-speed mode
- 2 x USB 3.0 ports
- 2 x USB 2.0 ports
- Gigabit Ethernet
- 2 x 4 lane MIPI camera/display
- PCIe 2.0 x1
- 5V/5A power via USB-C
- Raspberry Pi standard 40-pin header
- Real-time clock RTC
- Power button

Build system: x86_64
Build-tested: bcm2712
Run-tested: bcm2712/RPi5

Signed-off-by: Marty Jones <mj8263788@gmail.com>
[Remove device variant, improve description]
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

target/linux/bcm27xx/Makefile

@@ -9,7 +9,7 @@ ARCH:=arm
 BOARD:=bcm27xx
 BOARDNAME:=Broadcom BCM27xx
 FEATURES:=audio boot-part display ext4 fpu gpio rootfs-part rtc squashfs usb usbgadget
-SUBTARGETS:=bcm2708 bcm2709 bcm2710 bcm2711
+SUBTARGETS:=bcm2708 bcm2709 bcm2710 bcm2711 bcm2712
 
 KERNEL_PATCHVER:=6.1
 

target/linux/bcm27xx/base-files/etc/board.d/02_network

@@ -17,6 +17,7 @@ raspberrypi,3-model-b-plus |\
 raspberrypi,400 |\
 raspberrypi,4-compute-module |\
 raspberrypi,4-model-b |\
+raspberrypi,5-model-b |\
 raspberrypi,model-b |\
 raspberrypi,model-b-plus |\
 raspberrypi,model-b-rev2)

target/linux/bcm27xx/base-files/etc/diag.sh

@@ -14,6 +14,7 @@ set_state() {
 	raspberrypi,400 |\
 	raspberrypi,4-compute-module |\
 	raspberrypi,4-model-b |\
+	raspberrypi,5-model-b |\
 	raspberrypi,model-b-plus)
 		status_led="led1"
 		;;

target/linux/bcm27xx/bcm2712/config-6.1

@@ -0,0 +1,600 @@
+CONFIG_64BIT=y
+# CONFIG_AIO is not set
+CONFIG_APERTURE_HELPERS=y
+CONFIG_ARCH_BCM=y
+CONFIG_ARCH_BCM2835=y
+CONFIG_ARCH_BINFMT_ELF_EXTRA_PHDRS=y
+CONFIG_ARCH_BRCMSTB=y
+CONFIG_ARCH_CORRECT_STACKTRACE_ON_KRETPROBE=y
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
+CONFIG_ARCH_MMAP_RND_BITS=18
+CONFIG_ARCH_MMAP_RND_BITS_MAX=24
+CONFIG_ARCH_MMAP_RND_BITS_MIN=18
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
+CONFIG_ARCH_NR_GPIO=0
+CONFIG_ARCH_PROC_KCORE_TEXT=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_STACKWALK=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_WANTS_NO_INSTR=y
+CONFIG_ARCH_WANTS_THP_SWAP=y
+CONFIG_ARM64=y
+CONFIG_ARM64_4K_PAGES=y
+CONFIG_ARM64_CNP=y
+CONFIG_ARM64_EPAN=y
+CONFIG_ARM64_ERRATUM_1165522=y
+CONFIG_ARM64_ERRATUM_1286807=y
+CONFIG_ARM64_ERRATUM_1463225=y
+CONFIG_ARM64_HW_AFDBM=y
+CONFIG_ARM64_LD_HAS_FIX_ERRATUM_843419=y
+CONFIG_ARM64_PAGE_SHIFT=12
+CONFIG_ARM64_PAN=y
+CONFIG_ARM64_PA_BITS=48
+CONFIG_ARM64_PA_BITS_48=y
+CONFIG_ARM64_PTR_AUTH=y
+CONFIG_ARM64_PTR_AUTH_KERNEL=y
+CONFIG_ARM64_SVE=y
+CONFIG_ARM64_TAGGED_ADDR_ABI=y
+CONFIG_ARM64_VA_BITS=39
+CONFIG_ARM64_VA_BITS_39=y
+CONFIG_ARM64_WORKAROUND_REPEAT_TLBI=y
+CONFIG_ARM64_WORKAROUND_SPECULATIVE_AT=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+CONFIG_ARM_ARCH_TIMER_OOL_WORKAROUND=y
+CONFIG_ARM_BRCMSTB_AVS_CPUFREQ=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_GIC_V2M=y
+CONFIG_ARM_GIC_V3=y
+CONFIG_ARM_GIC_V3_ITS=y
+CONFIG_ARM_GIC_V3_ITS_PCI=y
+# CONFIG_ARM_MHU_V2 is not set
+# CONFIG_ARM_PL172_MPMC is not set
+CONFIG_ARM_PSCI_FW=y
+CONFIG_ARM_RASPBERRYPI_CPUFREQ=y
+# CONFIG_ARM_SMMU is not set
+# CONFIG_ARM_SMMU_V3 is not set
+CONFIG_ARM_TIMER_SP804=y
+CONFIG_ASSOCIATIVE_ARRAY=y
+CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y
+CONFIG_BCM2708_VCMEM=y
+CONFIG_BCM2711_THERMAL=y
+CONFIG_BCM2712_IOMMU=y
+CONFIG_BCM2712_MIP=y
+CONFIG_BCM2835_MBOX=y
+CONFIG_BCM2835_POWER=y
+CONFIG_BCM2835_SMI=y
+CONFIG_BCM2835_SMI_DEV=m
+CONFIG_BCM2835_THERMAL=y
+CONFIG_BCM2835_VCHIQ=y
+# CONFIG_BCM2835_VCHIQ_MMAL is not set
+CONFIG_BCM2835_WDT=y
+CONFIG_BCM7038_L1_IRQ=y
+CONFIG_BCM7120_L2_IRQ=y
+CONFIG_BCM7XXX_PHY=y
+CONFIG_BCMA=y
+CONFIG_BCMA_BLOCKIO=y
+# CONFIG_BCMA_DEBUG is not set
+# CONFIG_BCMA_DRIVER_GMAC_CMN is not set
+CONFIG_BCMA_DRIVER_PCI=y
+CONFIG_BCMA_FALLBACK_SPROM=y
+CONFIG_BCMA_HOST_PCI=y
+CONFIG_BCMA_HOST_PCI_POSSIBLE=y
+# CONFIG_BCMA_HOST_SOC is not set
+CONFIG_BCMGENET=y
+CONFIG_BCM_NET_PHYLIB=y
+CONFIG_BCM_VCIO=y
+# CONFIG_BCM_VC_SM_CMA is not set
+CONFIG_BCM_VIDEOCORE=y
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_NVME=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_PM=y
+CONFIG_BRCMSTB_DPFE=y
+CONFIG_BRCMSTB_L2_IRQ=y
+CONFIG_BRCMSTB_MEMC=y
+CONFIG_BRCMSTB_PM=y
+# CONFIG_BRCMSTB_THERMAL is not set
+CONFIG_BRCM_CHAR_DRIVERS=y
+CONFIG_BRCM_USB_PINMAP=y
+CONFIG_BROADCOM_PHY=y
+CONFIG_CC_HAVE_SHADOW_CALL_STACK=y
+CONFIG_CC_HAVE_STACKPROTECTOR_SYSREG=y
+CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
+CONFIG_CC_NO_ARRAY_BOUNDS=y
+CONFIG_CLKSRC_MMIO=y
+CONFIG_CLK_BCM2711_DVP=y
+CONFIG_CLK_BCM2835=y
+CONFIG_CLK_RASPBERRYPI=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_MBYTES=5
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+# CONFIG_CMA_SYSFS is not set
+CONFIG_COMMON_CLK=y
+CONFIG_COMMON_CLK_RP1=y
+# CONFIG_COMMON_CLK_RP1_SDIO is not set
+CONFIG_COMMON_CLK_XGENE=y
+CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
+# CONFIG_COMPAT_32BIT_TIME is not set
+CONFIG_CONFIGFS_FS=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_CONTEXT_TRACKING=y
+CONFIG_CONTEXT_TRACKING_IDLE=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_CPUFREQ_DT=y
+CONFIG_CPUFREQ_DT_PLATDEV=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+CONFIG_CPU_FREQ_GOV_ATTR_SET=y
+CONFIG_CPU_FREQ_GOV_COMMON=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_RMAP=y
+CONFIG_CRC16=y
+CONFIG_CRYPTO_AES_ARM64=y
+CONFIG_CRYPTO_AES_ARM64_BS=y
+CONFIG_CRYPTO_AES_ARM64_CE=y
+CONFIG_CRYPTO_AES_ARM64_CE_BLK=y
+CONFIG_CRYPTO_AES_ARM64_CE_CCM=y
+CONFIG_CRYPTO_AES_ARM64_NEON_BLK=y
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_CRYPTD=y
+CONFIG_CRYPTO_CTS=y
+CONFIG_CRYPTO_DRBG=y
+CONFIG_CRYPTO_DRBG_HMAC=y
+CONFIG_CRYPTO_DRBG_MENU=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_GHASH_ARM64_CE=y
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
+CONFIG_CRYPTO_LIB_SHA1=y
+CONFIG_CRYPTO_LIB_SHA256=y
+CONFIG_CRYPTO_LIB_UTILS=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_SHA1=y
+CONFIG_CRYPTO_SHA1_ARM64_CE=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA256_ARM64=y
+CONFIG_CRYPTO_SHA2_ARM64_CE=y
+CONFIG_CRYPTO_SHA3=y
+CONFIG_CRYPTO_SHA3_ARM64=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_SHA512_ARM64=y
+CONFIG_CRYPTO_SHA512_ARM64_CE=y
+CONFIG_CRYPTO_SM3=y
+CONFIG_CRYPTO_SM3_ARM64_CE=y
+CONFIG_CRYPTO_SM4=y
+CONFIG_CRYPTO_SM4_ARM64_CE=y
+CONFIG_CRYPTO_SM4_ARM64_CE_BLK=y
+CONFIG_CRYPTO_XTS=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DIMLIB=y
+CONFIG_DMABUF_HEAPS=y
+CONFIG_DMABUF_HEAPS_CMA=y
+CONFIG_DMABUF_HEAPS_SYSTEM=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_BCM2708=y
+CONFIG_DMA_BCM2835=y
+CONFIG_DMA_CMA=y
+CONFIG_DMA_DIRECT_REMAP=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_OPS=y
+CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DNOTIFY=y
+CONFIG_DTC=y
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EXCLUSIVE_SYSTEM_RAM=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_EXTCON=y
+CONFIG_F2FS_FS=y
+CONFIG_FB=y
+CONFIG_FB_BCM2708=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+CONFIG_FB_CMDLINE=y
+CONFIG_FB_SIMPLE=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_8x8=y
+CONFIG_FONT_SUPPORT=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FRAME_POINTER=y
+CONFIG_FREEZER=y
+CONFIG_FSL_ERRATUM_A008585=y
+CONFIG_FS_ENCRYPTION=y
+CONFIG_FS_ENCRYPTION_ALGS=y
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FWNODE_MDIO=y
+CONFIG_FW_CACHE=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_FW_LOADER_SYSFS=y
+CONFIG_GCC11_NO_ARRAY_BOUNDS=y
+CONFIG_GCC_SUPPORTS_DYNAMIC_FTRACE_WITH_REGS=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ARCH_TOPOLOGY=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_CPU_VULNERABILITIES=y
+CONFIG_GENERIC_CSUM=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IOREMAP=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_INJECTION=y
+CONFIG_GENERIC_IRQ_MIGRATION=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
+CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_PINCTRL_GROUPS=y
+CONFIG_GENERIC_PINMUX_FUNCTIONS=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GLOB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_BCM_VIRT=y
+CONFIG_GPIO_BRCMSTB=y
+CONFIG_GPIO_CDEV=y
+# CONFIG_GPIO_FSM is not set
+CONFIG_GPIO_GENERIC=y
+CONFIG_GPIO_RASPBERRYPI_EXP=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HOTPLUG_PCI=y
+# CONFIG_HOTPLUG_PCI_CPCI is not set
+# CONFIG_HOTPLUG_PCI_PCIE is not set
+CONFIG_HOTPLUG_PCI_SHPC=y
+CONFIG_HWMON=y
+CONFIG_HW_CONSOLE=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_IPROC_RNG200=y
+CONFIG_I2C=y
+CONFIG_I2C_ALGOBIT=y
+# CONFIG_I2C_BCM2708 is not set
+CONFIG_I2C_BCM2835=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_BRCMSTB=y
+CONFIG_I2C_DESIGNWARE_CORE=y
+CONFIG_I2C_DESIGNWARE_PLATFORM=y
+CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
+CONFIG_INPUT=y
+CONFIG_INPUT_MOUSEDEV=y
+# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+CONFIG_INPUT_RASPBERRYPI_BUTTON=y
+CONFIG_IOMMU_API=y
+# CONFIG_IOMMU_DEBUGFS is not set
+# CONFIG_IOMMU_DEFAULT_DMA_LAZY is not set
+CONFIG_IOMMU_DEFAULT_DMA_STRICT=y
+# CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set
+CONFIG_IOMMU_DMA=y
+CONFIG_IOMMU_IOVA=y
+# CONFIG_IOMMU_IO_PGTABLE_ARMV7S is not set
+# CONFIG_IOMMU_IO_PGTABLE_DART is not set
+# CONFIG_IOMMU_IO_PGTABLE_LPAE is not set
+CONFIG_IOMMU_SUPPORT=y
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_MSI_IOMMU=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_KEYS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_PWM=y
+CONFIG_LEDS_TRIGGER_ACTPWR=y
+CONFIG_LEDS_TRIGGER_INPUT=y
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_LOGO=y
+CONFIG_LOGO_LINUX_CLUT224=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+CONFIG_MACB=y
+CONFIG_MACB_PCI=y
+CONFIG_MACB_USE_HWSTAMP=y
+CONFIG_MAC_PARTITION=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAILBOX=y
+# CONFIG_MAILBOX_TEST is not set
+CONFIG_MDIO_BCM_UNIMAC=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MEMORY=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_MFD_CORE=y
+CONFIG_MFD_RP1=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MICROCHIP_PHY=y
+CONFIG_MIGRATION=y
+CONFIG_MMC=y
+# CONFIG_MMC_BCM2835 is not set
+CONFIG_MMC_BCM2835_DMA=y
+CONFIG_MMC_BCM2835_MMC=y
+CONFIG_MMC_BCM2835_PIO_DMA_BARRIER=2
+CONFIG_MMC_BCM2835_SDHOST=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_BLOCK_MINORS=32
+CONFIG_MMC_CQHCI=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_BRCMSTB=y
+CONFIG_MMC_SDHCI_IO_ACCESSORS=y
+CONFIG_MMC_SDHCI_IPROC=y
+CONFIG_MMC_SDHCI_OF_DWCMSHC=y
+# CONFIG_MMC_SDHCI_PCI is not set
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MODULES_USE_ELF_RELA=y
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_SG_DMA_LENGTH=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_PTP_CLASSIFY=y
+CONFIG_NET_SELFTESTS=y
+CONFIG_NLS=y
+CONFIG_NLS_ASCII=y
+CONFIG_NOP_USB_XCEIV=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=4
+CONFIG_NVMEM=y
+CONFIG_NVMEM_LAYOUTS=y
+CONFIG_NVME_CORE=y
+# CONFIG_NVME_HWMON is not set
+# CONFIG_NVME_MULTIPATH is not set
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_CONFIGFS=y
+CONFIG_OF_DYNAMIC=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IOMMU=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_OVERLAY=y
+CONFIG_OF_RESOLVE=y
+CONFIG_PADATA=y
+CONFIG_PAGE_POOL=y
+CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
+CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
+CONFIG_PARTITION_PERCPU=y
+CONFIG_PCI=y
+CONFIG_PCIEAER=y
+CONFIG_PCIEAER_INJECT=y
+CONFIG_PCIEASPM=y
+# CONFIG_PCIEASPM_DEFAULT is not set
+# CONFIG_PCIEASPM_PERFORMANCE is not set
+# CONFIG_PCIEASPM_POWERSAVE is not set
+CONFIG_PCIEASPM_POWER_SUPERSAVE=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCIE_BRCMSTB=y
+CONFIG_PCIE_DPC=y
+CONFIG_PCIE_DW=y
+CONFIG_PCIE_DW_HOST=y
+CONFIG_PCIE_DW_PLAT=y
+CONFIG_PCIE_DW_PLAT_HOST=y
+CONFIG_PCIE_MICROCHIP_HOST=y
+CONFIG_PCIE_PME=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
+CONFIG_PCI_ECAM=y
+CONFIG_PCI_HOST_COMMON=y
+CONFIG_PCI_HOST_GENERIC=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
+CONFIG_PCI_STUB=y
+CONFIG_PGTABLE_LEVELS=3
+CONFIG_PHYLIB=y
+CONFIG_PHYLINK=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+# CONFIG_PHY_BRCM_SATA is not set
+CONFIG_PHY_BRCM_USB=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_BCM2712=y
+CONFIG_PINCTRL_BCM2835=y
+CONFIG_PINCTRL_RP1=y
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+CONFIG_PM_GENERIC_DOMAINS=y
+CONFIG_PM_GENERIC_DOMAINS_OF=y
+CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
+CONFIG_PM_OPP=y
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_GPIO=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PPS=y
+CONFIG_PREEMPT_NONE_BUILD=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PTP_1588_CLOCK=y
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_PWM=y
+CONFIG_PWM_BCM2835=y
+CONFIG_PWM_BRCMSTB=y
+CONFIG_PWM_RP1=y
+CONFIG_PWM_SYSFS=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_RANDSTRUCT_NONE=y
+CONFIG_RAS=y
+CONFIG_RASPBERRYPI_FIRMWARE=y
+CONFIG_RASPBERRYPI_GPIOMEM=y
+CONFIG_RASPBERRYPI_POWER=y
+CONFIG_RATIONAL=y
+# CONFIG_RAVE_SP_CORE is not set
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_GPIO=y
+CONFIG_RESET_BRCMSTB=y
+CONFIG_RESET_BRCMSTB_RESCAL=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RESET_RASPBERRYPI=y
+CONFIG_RESET_SIMPLE=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RODATA_FULL_DEFAULT_ENABLED=y
+# CONFIG_RPIVID_MEM is not set
+# CONFIG_RPI_POE_POWER is not set
+CONFIG_RPS=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_BRCMSTB=y
+CONFIG_RTC_DRV_RPI=y
+CONFIG_RTC_I2C_AND_SPI=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_SCSI=y
+CONFIG_SCSI_COMMON=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_SENSORS_RASPBERRYPI_HWMON=y
+CONFIG_SENSORS_RP1_ADC=y
+CONFIG_SERIAL_8250_BCM2835AUX=y
+CONFIG_SERIAL_8250_BCM7271=y
+# CONFIG_SERIAL_8250_DMA is not set
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_8250_NR_UARTS=1
+CONFIG_SERIAL_8250_RUNTIME_UARTS=0
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+# CONFIG_SERIAL_DEV_CTRL_TTYPORT is not set
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SG_POOL=y
+CONFIG_SMP=y
+CONFIG_SMSC_PHY=y
+CONFIG_SOCK_RX_QUEUE_MAPPING=y
+CONFIG_SOC_BRCMSTB=y
+CONFIG_SOC_BUS=y
+CONFIG_SOFTIRQ_ON_OWN_STACK=y
+CONFIG_SPARSEMEM=y
+CONFIG_SPARSEMEM_EXTREME=y
+CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SRCU=y
+# CONFIG_STRIP_ASM_SYMS is not set
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+CONFIG_SWIOTLB=y
+CONFIG_SWPHY=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+# CONFIG_TEXTSEARCH is not set
+CONFIG_THERMAL=y
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_OF=y
+CONFIG_THERMAL_WRITABLE_TRIPS=y
+CONFIG_THREAD_INFO_IN_TASK=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TRACE_IRQFLAGS_NMI_SUPPORT=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+# CONFIG_UACCE is not set
+# CONFIG_UCLAMP_TASK is not set
+CONFIG_UEVENT_HELPER_PATH=""
+CONFIG_UNMAP_KERNEL_AT_EL0=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+# CONFIG_USB_BRCMSTB is not set
+CONFIG_USB_COMMON=y
+CONFIG_USB_DWCOTG=y
+CONFIG_USB_GADGET=y
+# CONFIG_USB_HCD_BCMA is not set
+CONFIG_USB_PCI=y
+CONFIG_USB_PHY=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_UAS=y
+# CONFIG_USB_UHCI_HCD is not set
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_PCI=y
+CONFIG_USB_XHCI_PLATFORM=y
+CONFIG_VCHIQ_CDEV=y
+CONFIG_VMAP_STACK=y
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+CONFIG_VT_CONSOLE_SLEEP=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_XPS=y
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_ZONE_DMA32=y

target/linux/bcm27xx/bcm2712/target.mk

@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+ARCH:=aarch64
+SUBTARGET:=bcm2712
+BOARDNAME:=BCM2712 boards (64 bit)
+CPU_TYPE:=cortex-a76
+FEATURES+=pci pcie
+
+define Target/Description
+	Build firmware image for BCM2712 devices.
+	This firmware features a 64 bit kernel.
+endef

target/linux/bcm27xx/image/Makefile

@@ -172,4 +172,22 @@ ifeq ($(SUBTARGET),bcm2711)
   TARGET_DEVICES += rpi-4
 endif
 
+define Device/rpi-5
+  DEVICE_MODEL := 5
+  KERNEL_IMG := kernel_2712.img
+  DEVICE_DTS := broadcom/bcm2712-rpi-5-b
+  SUPPORTED_DEVICES := raspberrypi,5-model-b
+  DEVICE_PACKAGES := \
+	cypress-firmware-43455-sdio \
+	brcmfmac-nvram-43455-sdio \
+	kmod-brcmfmac wpad-basic-mbedtls \
+	kmod-hwmon-pwmfan kmod-thermal \
+	kmod-usb-dwc3 kmod-usb3
+  IMAGE/sysupgrade.img.gz := boot-common | boot-2711 | sdcard-img | gzip | append-metadata
+  IMAGE/factory.img.gz := boot-common | boot-2711 | sdcard-img | gzip
+endef
+ifeq ($(SUBTARGET),bcm2712)
+  TARGET_DEVICES += rpi-5
+endif
+
 $(eval $(call BuildImage))