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
30 bool "Broadcom BCM2711 SoC support"
31 depends on ARCH_BCM283X
34 bool "Broadcom BCM2711 SoC 32-bit support"
35 depends on ARCH_BCM283X
41 bool "Broadcom BCM2711 SoC 64-bit support"
42 depends on ARCH_BCM283X
46 menu "Broadcom BCM283X family"
47 depends on ARCH_BCM283X
50 prompt "Broadcom BCM283X board select"
54 bool "Raspberry Pi (all BCM2835 variants)"
56 Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as
57 the A, A+, B, B+, Compute Module, and Zero. This option cannot
58 support BCM2836/BCM2837-based Raspberry Pis such as the RPi 2 and
59 RPi 3 due to different peripheral address maps.
61 This option creates a build targeting the ARM1176 ISA.
65 bool "Raspberry Pi Zero W"
67 Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as
70 This option assumes the VideoCore firmware is configured to use the
71 mini UART (rather than PL011) for the serial console. This is the
72 default on the RPi Zero W. To enable the UART console, the following
73 non-default option must be present in config.txt: enable_uart=1.
74 This is required for U-Boot to operate correctly, even if you only
75 care about the HDMI/usbkbd console.
77 This option creates a build targeting the ARMv7/AArch32 ISA.
83 Support for all BCM2836-based Raspberry Pi variants, such as
86 This option also supports BCM2837-based variants such as the RPi 3
87 Model B, when run in 32-bit mode, provided you have configured the
88 VideoCore firmware to select the PL011 UART for the console by:
89 a) config.txt should contain dtoverlay=pi3-miniuart-bt.
90 b) You should run the following to tell the VC FW to process DT when
91 booting, and copy u-boot.bin.img (rather than u-boot.bin) to the SD
92 card as the kernel image:
94 path/to/kernel/scripts/mkknlimg --dtok u-boot.bin u-boot.bin.img
96 This works as of firmware.git commit 046effa13ebc "firmware:
97 arm_loader: emmc clock depends on core clock See:
98 https://github.com/raspberrypi/firmware/issues/572".
100 This option creates a build targeting the ARMv7/AArch32 ISA.
103 config TARGET_RPI_3_32B
104 bool "Raspberry Pi 3 32-bit build"
106 Support for all BCM2837-based Raspberry Pi variants, such as
107 the RPi 3 model B, in AArch32 (32-bit) mode.
109 This option assumes the VideoCore firmware is configured to use the
110 mini UART (rather than PL011) for the serial console. This is the
111 default on the RPi 3. To enable the UART console, the following non-
112 default option must be present in config.txt: enable_uart=1. This is
113 required for U-Boot to operate correctly, even if you only care
114 about the HDMI/usbkbd console.
116 This option creates a build targeting the ARMv7/AArch32 ISA.
120 bool "Raspberry Pi 3 64-bit build"
122 Support for all BCM2837-based Raspberry Pi variants, such as
123 the RPi 3 model B, in AArch64 (64-bit) mode.
125 This option assumes the VideoCore firmware is configured to use the
126 mini UART (rather than PL011) for the serial console. This is the
127 default on the RPi 3. To enable the UART console, the following non-
128 default option must be present in config.txt: enable_uart=1. This is
129 required for U-Boot to operate correctly, even if you only care
130 about the HDMI/usbkbd console.
132 At the time of writing, the VC FW requires a non-default option in
133 config.txt to request the ARM CPU boot in 64-bit mode:
136 The VC FW typically provides ARM "stub" code to set up the CPU and
137 quiesce secondary SMP CPUs. This is not currently true in 64-bit
138 mode. In order to boot U-Boot before the VC FW is enhanced, please
139 see the commit description for the commit which added RPi3 support
140 for a workaround. Since the instructions are temporary, they are not
141 duplicated here. The VC FW enhancement is tracked in
142 https://github.com/raspberrypi/firmware/issues/579.
144 This option creates a build targeting the ARMv8/AArch64 ISA.
147 config TARGET_RPI_4_32B
148 bool "Raspberry Pi 4 32-bit build"
150 Support for all BCM2711-based Raspberry Pi variants, such as
151 the RPi 4 model B, in AArch32 (32-bit) mode.
153 This option assumes the VideoCore firmware is configured to use the
154 mini UART (rather than PL011) for the serial console. This is the
155 default on the RPi 4. To enable the UART console, the following non-
156 default option must be present in config.txt: enable_uart=1. This is
157 required for U-Boot to operate correctly, even if you only care
158 about the HDMI/usbkbd console.
160 Due to hardware incompatibilities, this can't be used with
163 This option creates a build targeting the ARMv7/AArch32 ISA.
167 bool "Raspberry Pi 4 64-bit build"
169 Support for all BCM2711-based Raspberry Pi variants, such as
170 the RPi 4 model B, in AArch64 (64-bit) mode.
172 This option assumes the VideoCore firmware is configured to use the
173 mini UART (rather than PL011) for the serial console. This is the
174 default on the RPi 4. To enable the UART console, the following non-
175 default option must be present in config.txt: enable_uart=1. This is
176 required for U-Boot to operate correctly, even if you only care
177 about the HDMI/usbkbd console.
179 Due to hardware incompatibilities, this can't be used with
182 Also, due to a bug in firmware, switching to 64bit mode doesn't
183 happen automatically based on the kernel's image filename. See
184 https://github.com/raspberrypi/firmware/issues/1193 for more details.
185 Until that is resolved, the configuration (config.txt) needs to
186 explicitly set: arm_64bit=1.
188 This option creates a build targeting the ARMv8/AArch64 ISA.
191 config TARGET_RPI_ARM64
192 bool "Raspberry Pi one binary 64-bit build"
194 Support for all armv8 based Raspberry Pi variants, such as
195 the RPi 4 model B, in AArch64 (64-bit) mode.
204 default "raspberrypi"
209 config SYS_CONFIG_NAME