From 82f766d1d2c580a29bed340ea4dd9fa1b8ff05e0 Mon Sep 17 00:00:00 2001 From: Alex Deymo Date: Sun, 2 Apr 2017 01:25:20 -0700 Subject: Allow boards to initialize the DT at runtime. In some boards like the Raspberry Pi the initial bootloader will pass a DT to the kernel. When using U-Boot as such kernel, the board code in U-Boot should be able to provide U-Boot with this, already assembled device tree blob. This patch introduces a new config option CONFIG_OF_BOARD to use instead of CONFIG_OF_EMBED or CONFIG_OF_SEPARATE which will initialize the DT from a board-specific funtion instead of bundling one with U-Boot or as a separated file. This allows boards like the Raspberry Pi to reuse the device tree passed from the bootcode.bin and start.elf firmware files, including the run-time selected device tree overlays. Signed-off-by: Alex Deymo Reviewed-by: Simon Glass --- include/fdtdec.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/fdtdec.h b/include/fdtdec.h index 2134701c54..b0e5b2767d 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -1023,4 +1023,10 @@ int fdtdec_setup_memory_banksize(void); */ int fdtdec_setup(void); +/** + * Board-specific FDT initialization. Returns the address to a device tree blob. + * Called when CONFIG_OF_BOARD is defined. + */ +void *board_fdt_blob_setup(void); + #endif -- cgit