From 3ebe09d09a407f93022d945a205c5318239eb3f6 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Tue, 5 Mar 2019 04:25:54 +0100 Subject: lib: fdt: Split fdtdec_setup_mem_size_base() Split fdtdec_setup_mem_size_base() into fdtdec_setup_mem_size_base_fdt(), which allows the caller to pass custom blob into the function and the original fdtdec_setup_mem_size_base(), which uses the gd->fdt_blob. This is useful when configuring the DRAM properties from a FDT blob fragment passed in by the firmware. Signed-off-by: Marek Vasut Cc: Nobuhiro Iwamatsu Cc: Simon Glass Cc: Tom Rini Reviewed-by: Simon Glass --- include/fdtdec.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/fdtdec.h') diff --git a/include/fdtdec.h b/include/fdtdec.h index b7e35cd87c..3e681099a8 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -917,6 +917,26 @@ struct display_timing { int fdtdec_decode_display_timing(const void *blob, int node, int index, struct display_timing *config); +/** + * fdtdec_setup_mem_size_base_fdt() - decode and setup gd->ram_size and + * gd->ram_start + * + * Decode the /memory 'reg' property to determine the size and start of the + * first memory bank, populate the global data with the size and start of the + * first bank of memory. + * + * This function should be called from a boards dram_init(). This helper + * function allows for boards to query the device tree for DRAM size and start + * address instead of hard coding the value in the case where the memory size + * and start address cannot be detected automatically. + * + * @param blob FDT blob + * + * @return 0 if OK, -EINVAL if the /memory node or reg property is missing or + * invalid + */ +int fdtdec_setup_mem_size_base_fdt(const void *blob); + /** * fdtdec_setup_mem_size_base() - decode and setup gd->ram_size and * gd->ram_start -- cgit