1config BCM2835 2 bool "Broadcom BCM2835 SoC support" 3 depends on ARCH_BCM283X 4 5config BCM2836 6 bool "Broadcom BCM2836 SoC support" 7 depends on ARCH_BCM283X 8 9config BCM2837 10 bool "Broadcom BCM2837 SoC support" 11 depends on ARCH_BCM283X 12 13menu "Broadcom BCM283X family" 14 depends on ARCH_BCM283X 15 16choice 17 prompt "Broadcom BCM283X board select" 18 optional 19 20config TARGET_RPI 21 bool "Raspberry Pi (all BCM2835 variants)" 22 help 23 Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as 24 the A, A+, B, B+, Compute Module, and Zero. This option cannot 25 support BCM2836/BCM2837-based Raspberry Pis such as the RPi 2 and 26 RPi 3 due to different peripheral address maps. 27 28 This option creates a build targetting the ARM1176 ISA. 29 select BCM2835 30 select CPU_ARM1176 31 32config TARGET_RPI_2 33 bool "Raspberry Pi 2" 34 help 35 Support for all BCM2836-based Raspberry Pi variants, such as 36 the RPi 2 model B. 37 38 This option also supports BCM2837-based variants such as the RPi 3 39 Model B, when run in 32-bit mode, provided you have configured the 40 VideoCore firmware to select the PL011 UART for the console by: 41 a) config.txt should contain dtoverlay=pi3-miniuart-bt. 42 b) You should run the following to tell the VC FW to process DT when 43 booting, and copy u-boot.bin.img (rather than u-boot.bin) to the SD 44 card as the kernel image: 45 46 path/to/kernel/scripts/mkknlimg --dtok u-boot.bin u-boot.bin.img 47 48 This works as of firmware.git commit 046effa13ebc "firmware: 49 arm_loader: emmc clock depends on core clock See: 50 https://github.com/raspberrypi/firmware/issues/572". 51 52 This option creates a build targetting the ARMv7/AArch32 ISA. 53 select ARMV7_LPAE 54 select BCM2836 55 select CPU_V7 56 57config TARGET_RPI_3_32B 58 bool "Raspberry Pi 3 32-bit build" 59 help 60 Support for all BCM2837-based Raspberry Pi variants, such as 61 the RPi 3 model B, in AArch32 (32-bit) mode. 62 63 This option assumes the VideoCore firmware is configured to use the 64 mini UART (rather than PL011) for the serial console. This is the 65 default on the RPi 3. To enable the UART console, the following non- 66 default option must be present in config.txt: enable_uart=1. 67 68 This option creates a build targetting the ARMv7/AArch32 ISA. 69 select ARMV7_LPAE 70 select BCM2837 71 select CPU_V7 72 73endchoice 74 75config SYS_BOARD 76 default "rpi" if TARGET_RPI 77 default "rpi_2" if TARGET_RPI_2 78 default "rpi_3_32b" if TARGET_RPI_3_32B 79 80config SYS_VENDOR 81 default "raspberrypi" 82 83config SYS_SOC 84 default "bcm283x" 85 86config SYS_CONFIG_NAME 87 default "rpi" if TARGET_RPI 88 default "rpi_2" if TARGET_RPI_2 89 default "rpi_3_32b" if TARGET_RPI_3_32B 90 91endmenu 92