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| author | Stephen Warren <swarren@wwwdotorg.org> | 2014-11-18 21:40:21 -0700 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-12-08 09:35:42 -0500 |
| commit | 6fe7845a9823c12aa673ad3590059528c184b987 (patch) | |
| tree | 0a7ae3d163810facecf4576530befac2f05b903d /include | |
| parent | 4c5bbc2328a24f5e1ee990c9a9527e48e5fb3b5f (diff) | |
| download | talos-obmc-uboot-6fe7845a9823c12aa673ad3590059528c184b987.tar.gz talos-obmc-uboot-6fe7845a9823c12aa673ad3590059528c184b987.zip | |
ARM: rpi_b: detect board revision
Detect the board revision early during boot, and print the decoded
model name.
Eventually, this information can be used for tasks such as:
- Allowing/preventing USB device mode; some models have a USB device on-
board so only host mode makes sense. Others connect the SoC directly
to the USB connector, so device-mode might make sense.
- The on-board USB hub/Ethernet requires different GPIOs to enable it,
although luckily the default appears to be fine so far.
- The compute module contains an on-board eMMC device, so we could store
the environment there. Other models use an SD card and so don't support
saving the environment (unless we store it in a file on the FAT boot
partition...)
Set $fdtfile based on this information. At present, the mainline Linux
kernel doesn't contain a separate DTB for most models, but I hope that
will change soon.
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/configs/rpi_b.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/configs/rpi_b.h b/include/configs/rpi_b.h index 41e975fbcc..4874c515d7 100644 --- a/include/configs/rpi_b.h +++ b/include/configs/rpi_b.h @@ -175,7 +175,6 @@ "pxefile_addr_r=0x00100000\0" \ "kernel_addr_r=0x01000000\0" \ "fdt_addr_r=0x02000000\0" \ - "fdtfile=bcm2835-rpi-b.dtb\0" \ "ramdisk_addr_r=0x02100000\0" \ #define BOOT_TARGET_DEVICES(func) \ |
