2 bool "Broadcom BCM2835 SoC support"
3 depends on ARCH_BCM283X
7 bool "Broadcom BCM2836 SoC support"
8 depends on ARCH_BCM283X
13 bool "Broadcom BCM2837 SoC support"
14 depends on ARCH_BCM283X
17 bool "Broadcom BCM2837 SoC 32-bit support"
18 depends on ARCH_BCM283X
24 bool "Broadcom BCM2837 SoC 64-bit support"
25 depends on ARCH_BCM283X
29 menu "Broadcom BCM283X family"
30 depends on ARCH_BCM283X
33 prompt "Broadcom BCM283X board select"
37 bool "Raspberry Pi (all BCM2835 variants)"
39 Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as
40 the A, A+, B, B+, Compute Module, and Zero. This option cannot
41 support BCM2836/BCM2837-based Raspberry Pis such as the RPi 2 and
42 RPi 3 due to different peripheral address maps.
44 This option creates a build targeting the ARM1176 ISA.
48 bool "Raspberry Pi Zero W"
50 Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as
53 This option assumes the VideoCore firmware is configured to use the
54 mini UART (rather than PL011) for the serial console. This is the
55 default on the RPi Zero W. To enable the UART console, the following
56 non-default option must be present in config.txt: enable_uart=1.
57 This is required for U-Boot to operate correctly, even if you only
58 care about the HDMI/usbkbd console.
60 This option creates a build targeting the ARMv7/AArch32 ISA.
66 Support for all BCM2836-based Raspberry Pi variants, such as
69 This option also supports BCM2837-based variants such as the RPi 3
70 Model B, when run in 32-bit mode, provided you have configured the
71 VideoCore firmware to select the PL011 UART for the console by:
72 a) config.txt should contain dtoverlay=pi3-miniuart-bt.
73 b) You should run the following to tell the VC FW to process DT when
74 booting, and copy u-boot.bin.img (rather than u-boot.bin) to the SD
75 card as the kernel image:
77 path/to/kernel/scripts/mkknlimg --dtok u-boot.bin u-boot.bin.img
79 This works as of firmware.git commit 046effa13ebc "firmware:
80 arm_loader: emmc clock depends on core clock See:
81 https://github.com/raspberrypi/firmware/issues/572".
83 This option creates a build targeting the ARMv7/AArch32 ISA.
86 config TARGET_RPI_3_32B
87 bool "Raspberry Pi 3 32-bit build"
89 Support for all BCM2837-based Raspberry Pi variants, such as
90 the RPi 3 model B, in AArch32 (32-bit) mode.
92 This option assumes the VideoCore firmware is configured to use the
93 mini UART (rather than PL011) for the serial console. This is the
94 default on the RPi 3. To enable the UART console, the following non-
95 default option must be present in config.txt: enable_uart=1. This is
96 required for U-Boot to operate correctly, even if you only care
97 about the HDMI/usbkbd console.
99 This option creates a build targeting the ARMv7/AArch32 ISA.
103 bool "Raspberry Pi 3 64-bit build"
105 Support for all BCM2837-based Raspberry Pi variants, such as
106 the RPi 3 model B, in AArch64 (64-bit) mode.
108 This option assumes the VideoCore firmware is configured to use the
109 mini UART (rather than PL011) for the serial console. This is the
110 default on the RPi 3. To enable the UART console, the following non-
111 default option must be present in config.txt: enable_uart=1. This is
112 required for U-Boot to operate correctly, even if you only care
113 about the HDMI/usbkbd console.
115 At the time of writing, the VC FW requires a non-default option in
116 config.txt to request the ARM CPU boot in 64-bit mode:
119 The VC FW typically provides ARM "stub" code to set up the CPU and
120 quiesce secondary SMP CPUs. This is not currently true in 64-bit
121 mode. In order to boot U-Boot before the VC FW is enhanced, please
122 see the commit description for the commit which added RPi3 support
123 for a workaround. Since the instructions are temporary, they are not
124 duplicated here. The VC FW enhancement is tracked in
125 https://github.com/raspberrypi/firmware/issues/579.
127 This option creates a build targeting the ARMv8/AArch64 ISA.
136 default "raspberrypi"
141 config SYS_CONFIG_NAME