From: Ashok Reddy Soma Date: Mon, 6 Apr 2020 13:58:30 +0000 (-0600) Subject: common: fdt: Remove additional 4k space for fdt allocation X-Git-Tag: v2020.10~139^2~8^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b8fd54d62f92658cbd20ca051304e13eabf24ddd;p=platform%2Fkernel%2Fu-boot.git common: fdt: Remove additional 4k space for fdt allocation There is no technical reason to add additional 4k space for FDT. This space is completely unused and just increase memory requirements. This is problematic on systems with limited memory resources as Xilinx Zynq CSE/ZynqMP mini and Versal mini configurations. The patch is removing additional 4k space. EFI code is using copy_fdt() which copy FDT to different location. And all boot commands in case of using U-Boot's FDT pointed by $fdtcontroladdr are copying FDT to different locations by image_setup_libfdt(). That's why in proper flow none should modified DTB used by U-Boot that's why there is no need for additional space. Signed-off-by: Ashok Reddy Soma Signed-off-by: Michal Simek Acked-by: Stephen Warren --- diff --git a/common/board_f.c b/common/board_f.c index 01194ea..dcad551 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -537,7 +537,7 @@ static int reserve_fdt(void) * will be relocated with other data. */ if (gd->fdt_blob) { - gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32); + gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob), 32); gd->start_addr_sp = reserve_stack_aligned(gd->fdt_size); gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);