| config BCM2835 |
| bool "Broadcom BCM2835 SoC support" |
| depends on ARCH_BCM283X |
| select CPU_ARM1176 |
| |
| config BCM2836 |
| bool "Broadcom BCM2836 SoC support" |
| depends on ARCH_BCM283X |
| select ARMV7_LPAE |
| select CPU_V7A |
| |
| config BCM2837 |
| bool "Broadcom BCM2837 SoC support" |
| depends on ARCH_BCM283X |
| |
| config BCM2837_32B |
| bool "Broadcom BCM2837 SoC 32-bit support" |
| depends on ARCH_BCM283X |
| select BCM2837 |
| select ARMV7_LPAE |
| select CPU_V7A |
| |
| config BCM2837_64B |
| bool "Broadcom BCM2837 SoC 64-bit support" |
| depends on ARCH_BCM283X |
| select BCM2837 |
| select ARM64 |
| |
| config BCM2711 |
| bool "Broadcom BCM2711 SoC support" |
| depends on ARCH_BCM283X |
| |
| config BCM2711_32B |
| bool "Broadcom BCM2711 SoC 32-bit support" |
| depends on ARCH_BCM283X |
| select BCM2711 |
| select ARMV7_LPAE |
| select CPU_V7A |
| |
| config BCM2711_64B |
| bool "Broadcom BCM2711 SoC 64-bit support" |
| depends on ARCH_BCM283X |
| select BCM2711 |
| select ARM64 |
| |
| menu "Broadcom BCM283X family" |
| depends on ARCH_BCM283X |
| |
| choice |
| prompt "Broadcom BCM283X board select" |
| optional |
| |
| config TARGET_RPI |
| bool "Raspberry Pi (all BCM2835 variants)" |
| help |
| Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as |
| the A, A+, B, B+, Compute Module, and Zero. This option cannot |
| support BCM2836/BCM2837-based Raspberry Pis such as the RPi 2 and |
| RPi 3 due to different peripheral address maps. |
| |
| This option creates a build targeting the ARM1176 ISA. |
| select BCM2835 |
| |
| config TARGET_RPI_0_W |
| bool "Raspberry Pi Zero W" |
| help |
| Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as |
| the RPi Zero model W. |
| |
| This option assumes the VideoCore firmware is configured to use the |
| mini UART (rather than PL011) for the serial console. This is the |
| default on the RPi Zero W. To enable the UART console, the following |
| non-default option must be present in config.txt: enable_uart=1. |
| This is required for U-Boot to operate correctly, even if you only |
| care about the HDMI/usbkbd console. |
| |
| This option creates a build targeting the ARMv7/AArch32 ISA. |
| select BCM2835 |
| |
| config TARGET_RPI_2 |
| bool "Raspberry Pi 2" |
| help |
| Support for all BCM2836-based Raspberry Pi variants, such as |
| the RPi 2 model B. |
| |
| This option also supports BCM2837-based variants such as the RPi 3 |
| Model B, when run in 32-bit mode, provided you have configured the |
| VideoCore firmware to select the PL011 UART for the console by: |
| a) config.txt should contain dtoverlay=pi3-miniuart-bt. |
| b) You should run the following to tell the VC FW to process DT when |
| booting, and copy u-boot.bin.img (rather than u-boot.bin) to the SD |
| card as the kernel image: |
| |
| path/to/kernel/scripts/mkknlimg --dtok u-boot.bin u-boot.bin.img |
| |
| This works as of firmware.git commit 046effa13ebc "firmware: |
| arm_loader: emmc clock depends on core clock See: |
| https://github.com/raspberrypi/firmware/issues/572". |
| |
| This option creates a build targeting the ARMv7/AArch32 ISA. |
| select BCM2836 |
| |
| config TARGET_RPI_3_32B |
| bool "Raspberry Pi 3 32-bit build" |
| help |
| Support for all BCM2837-based Raspberry Pi variants, such as |
| the RPi 3 model B, in AArch32 (32-bit) mode. |
| |
| This option assumes the VideoCore firmware is configured to use the |
| mini UART (rather than PL011) for the serial console. This is the |
| default on the RPi 3. To enable the UART console, the following non- |
| default option must be present in config.txt: enable_uart=1. This is |
| required for U-Boot to operate correctly, even if you only care |
| about the HDMI/usbkbd console. |
| |
| This option creates a build targeting the ARMv7/AArch32 ISA. |
| select BCM2837_32B |
| |
| config TARGET_RPI_3 |
| bool "Raspberry Pi 3 64-bit build" |
| help |
| Support for all BCM2837-based Raspberry Pi variants, such as |
| the RPi 3 model B, in AArch64 (64-bit) mode. |
| |
| This option assumes the VideoCore firmware is configured to use the |
| mini UART (rather than PL011) for the serial console. This is the |
| default on the RPi 3. To enable the UART console, the following non- |
| default option must be present in config.txt: enable_uart=1. This is |
| required for U-Boot to operate correctly, even if you only care |
| about the HDMI/usbkbd console. |
| |
| At the time of writing, the VC FW requires a non-default option in |
| config.txt to request the ARM CPU boot in 64-bit mode: |
| arm_control=0x200 |
| |
| The VC FW typically provides ARM "stub" code to set up the CPU and |
| quiesce secondary SMP CPUs. This is not currently true in 64-bit |
| mode. In order to boot U-Boot before the VC FW is enhanced, please |
| see the commit description for the commit which added RPi3 support |
| for a workaround. Since the instructions are temporary, they are not |
| duplicated here. The VC FW enhancement is tracked in |
| https://github.com/raspberrypi/firmware/issues/579. |
| |
| This option creates a build targeting the ARMv8/AArch64 ISA. |
| select BCM2837_64B |
| |
| config TARGET_RPI_4_32B |
| bool "Raspberry Pi 4 32-bit build" |
| help |
| Support for all BCM2711-based Raspberry Pi variants, such as |
| the RPi 4 model B, in AArch32 (32-bit) mode. |
| |
| This option assumes the VideoCore firmware is configured to use the |
| mini UART (rather than PL011) for the serial console. This is the |
| default on the RPi 4. To enable the UART console, the following non- |
| default option must be present in config.txt: enable_uart=1. This is |
| required for U-Boot to operate correctly, even if you only care |
| about the HDMI/usbkbd console. |
| |
| Due to hardware incompatibilities, this can't be used with |
| BCM283/5/6/7. |
| |
| This option creates a build targeting the ARMv7/AArch32 ISA. |
| select BCM2711_32B |
| |
| config TARGET_RPI_4 |
| bool "Raspberry Pi 4 64-bit build" |
| help |
| Support for all BCM2711-based Raspberry Pi variants, such as |
| the RPi 4 model B, in AArch64 (64-bit) mode. |
| |
| This option assumes the VideoCore firmware is configured to use the |
| mini UART (rather than PL011) for the serial console. This is the |
| default on the RPi 4. To enable the UART console, the following non- |
| default option must be present in config.txt: enable_uart=1. This is |
| required for U-Boot to operate correctly, even if you only care |
| about the HDMI/usbkbd console. |
| |
| Due to hardware incompatibilities, this can't be used with |
| BCM283/5/6/7. |
| |
| Also, due to a bug in firmware, switching to 64bit mode doesn't |
| happen automatically based on the kernel's image filename. See |
| https://github.com/raspberrypi/firmware/issues/1193 for more details. |
| Until that is resolved, the configuration (config.txt) needs to |
| explicitly set: arm_64bit=1. |
| |
| This option creates a build targeting the ARMv8/AArch64 ISA. |
| select BCM2711_64B |
| |
| endchoice |
| |
| config SYS_BOARD |
| default "rpi" |
| |
| config SYS_VENDOR |
| default "raspberrypi" |
| |
| config SYS_SOC |
| default "bcm283x" |
| |
| config SYS_CONFIG_NAME |
| default "rpi" |
| |
| config BCM283x_BASE |
| hex |
| default "0x20000000" if BCM2835 |
| default "0x3f000000" if BCM2836 || BCM2837 |
| default "0xfe000000" if BCM2711 |
| |
| endmenu |
