config BCM2835
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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_V7
|
|
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_V7
|
|
config BCM2837_64B
|
bool "Broadcom BCM2837 SoC 64-bit support"
|
depends on ARCH_BCM283X
|
select BCM2837
|
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 targetting the ARM1176 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 targetting 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 targetting 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 targetting the ARMv8/AArch64 ISA.
|
select BCM2837_64B
|
|
endchoice
|
|
config SYS_BOARD
|
default "rpi"
|
|
config SYS_VENDOR
|
default "raspberrypi"
|
|
config SYS_SOC
|
default "bcm283x"
|
|
config SYS_CONFIG_NAME
|
default "rpi"
|
|
endmenu
|
