diff options
| author | Stephen Warren <swarren@wwwdotorg.org> | 2016-03-24 22:15:19 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-04-01 17:17:42 -0400 |
| commit | 95a2ddaea5575492a780cc7bad4335120542d697 (patch) | |
| tree | 0d037aad806ce76bdbc8150d17c18d028b8751d8 /arch | |
| parent | 7233fb3143c7329cb072318ce39360213d80ea54 (diff) | |
| download | u-boot-imx-95a2ddaea5575492a780cc7bad4335120542d697.zip u-boot-imx-95a2ddaea5575492a780cc7bad4335120542d697.tar.gz u-boot-imx-95a2ddaea5575492a780cc7bad4335120542d697.tar.bz2 | |
ARM: bcm2835: expand Kconfig target descriptions
This adds an explanation of which Raspberry Pi models each target option
supports.
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-bcm283x/Kconfig | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/arch/arm/mach-bcm283x/Kconfig b/arch/arm/mach-bcm283x/Kconfig index dc67704..1f3031d 100644 --- a/arch/arm/mach-bcm283x/Kconfig +++ b/arch/arm/mach-bcm283x/Kconfig @@ -14,12 +14,38 @@ choice optional config TARGET_RPI - bool "Raspberry Pi" + 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 select CPU_ARM1176 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 ARMV7_LPAE select BCM2836 select CPU_V7 |