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_2
  48         bool "Raspberry Pi 2"
  49         help
  50           Support for all BCM2836-based Raspberry Pi variants, such as
  51           the RPi 2 model B.
  52
  53           This option also supports BCM2837-based variants such as the RPi 3
  54           Model B, when run in 32-bit mode, provided you have configured the
  55           VideoCore firmware to select the PL011 UART for the console by:
  56           a) config.txt should contain dtoverlay=pi3-miniuart-bt.
  57           b) You should run the following to tell the VC FW to process DT when
  58           booting, and copy u-boot.bin.img (rather than u-boot.bin) to the SD
  59           card as the kernel image:
  60
  61                path/to/kernel/scripts/mkknlimg --dtok u-boot.bin u-boot.bin.img
  62
  63           This works as of firmware.git commit 046effa13ebc "firmware:
  64           arm_loader: emmc clock depends on core clock See:
  65           https://github.com/raspberrypi/firmware/issues/572".
  66
  67           This option creates a build targetting the ARMv7/AArch32 ISA.
  68         select BCM2836
  69
  70 config TARGET_RPI_3_32B
  71         bool "Raspberry Pi 3 32-bit build"
  72         help
  73           Support for all BCM2837-based Raspberry Pi variants, such as
  74           the RPi 3 model B, in AArch32 (32-bit) mode.
  75
  76           This option assumes the VideoCore firmware is configured to use the
  77           mini UART (rather than PL011) for the serial console. This is the
  78           default on the RPi 3. To enable the UART console, the following non-
  79           default option must be present in config.txt: enable_uart=1. This is
  80           required for U-Boot to operate correctly, even if you only care
  81           about the HDMI/usbkbd console.
  82
  83           This option creates a build targetting the ARMv7/AArch32 ISA.
  84         select BCM2837_32B
  85
  86 config TARGET_RPI_3
  87         bool "Raspberry Pi 3 64-bit build"
  88         help
  89           Support for all BCM2837-based Raspberry Pi variants, such as
  90           the RPi 3 model B, in AArch64 (64-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           At the time of writing, the VC FW requires a non-default option in
 100           config.txt to request the ARM CPU boot in 64-bit mode:
 101           arm_control=0x200
 102
 103           The VC FW typically provides ARM "stub" code to set up the CPU and
 104           quiesce secondary SMP CPUs. This is not currently true in 64-bit
 105           mode. In order to boot U-Boot before the VC FW is enhanced, please
 106           see the commit description for the commit which added RPi3 support
 107           for a workaround. Since the instructions are temporary, they are not
 108           duplicated here. The VC FW enhancement is tracked in
 109           https://github.com/raspberrypi/firmware/issues/579.
 110
 111           This option creates a build targetting the ARMv8/AArch64 ISA.
 112         select BCM2837_64B
 113
 114 endchoice
 115
 116 config SYS_BOARD
 117         default "rpi"
 118
 119 config SYS_VENDOR
 120         default "raspberrypi"
 121
 122 config SYS_SOC
 123         default "bcm283x"
 124
 125 config SYS_CONFIG_NAME
 126         default "rpi"
 127
 128 endmenu