arch/arm/mach-bcm283x/Kconfig

   1 config BCM2835
   2         bool "Broadcom BCM2835 SoC support"
   3         depends on ARCH_BCM283X
   4         select CPU_ARM1176
   5
   6 config BCM2836
   7         bool "Broadcom BCM2836 SoC support"
   8         depends on ARCH_BCM283X
   9         select ARMV7_LPAE
  10         select CPU_V7
  11
  12 config BCM2837
  13         bool "Broadcom BCM2837 SoC support"
  14         depends on ARCH_BCM283X
  15
  16 config BCM2837_32B
  17         bool "Broadcom BCM2837 SoC 32-bit support"
  18         depends on ARCH_BCM283X
  19         select BCM2837
  20         select ARMV7_LPAE
  21         select CPU_V7
  22
  23 config BCM2837_64B
  24         bool "Broadcom BCM2837 SoC 64-bit support"
  25         depends on ARCH_BCM283X
  26         select BCM2837
  27         select ARM64
  28
  29 menu "Broadcom BCM283X family"
  30         depends on ARCH_BCM283X
  31
  32 choice
  33         prompt "Broadcom BCM283X board select"
  34         optional
  35
  36 config TARGET_RPI
  37         bool "Raspberry Pi (all BCM2835 variants)"
  38         help
  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.
  43
  44           This option creates a build targetting the ARM1176 ISA.
  45         select BCM2835
  46
  47 config TARGET_RPI_0_W
  48         bool "Raspberry Pi Zero W"
  49         help
  50           Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as
  51           the RPi Zero model W.
  52
  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.
  59
  60           This option creates a build targetting the ARMv7/AArch32 ISA.
  61         select BCM2835
  62
  63 config TARGET_RPI_2
  64         bool "Raspberry Pi 2"
  65         help
  66           Support for all BCM2836-based Raspberry Pi variants, such as
  67           the RPi 2 model B.
  68
  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:
  76
  77                path/to/kernel/scripts/mkknlimg --dtok u-boot.bin u-boot.bin.img
  78
  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".
  82
  83           This option creates a build targetting the ARMv7/AArch32 ISA.
  84         select BCM2836
  85
  86 config TARGET_RPI_3_32B
  87         bool "Raspberry Pi 3 32-bit build"
  88         help
  89           Support for all BCM2837-based Raspberry Pi variants, such as
  90           the RPi 3 model B, in AArch32 (32-bit) mode.
  91
  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.
  98
  99           This option creates a build targetting the ARMv7/AArch32 ISA.
 100         select BCM2837_32B
 101
 102 config TARGET_RPI_3
 103         bool "Raspberry Pi 3 64-bit build"
 104         help
 105           Support for all BCM2837-based Raspberry Pi variants, such as
 106           the RPi 3 model B, in AArch64 (64-bit) mode.
 107
 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.
 114
 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:
 117           arm_control=0x200
 118
 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.
 126
 127           This option creates a build targetting the ARMv8/AArch64 ISA.
 128         select BCM2837_64B
 129
 130 endchoice
 131
 132 config SYS_BOARD
 133         default "rpi"
 134
 135 config SYS_VENDOR
 136         default "raspberrypi"
 137
 138 config SYS_SOC
 139         default "bcm283x"
 140
 141 config SYS_CONFIG_NAME
 142         default "rpi"
 143
 144 endmenu