From 2a6e6c81f454d44c940203051f72991eece5bf51 Mon Sep 17 00:00:00 2001 From: T Karthik Reddy Date: Tue, 11 May 2021 23:39:16 -0600 Subject: [PATCH] xilinx: versal: Enable CONFIG_POSITION_INDEPENDENT U-Boot expects to be linked to a specific hard-coded address and to be loaded to and run from that address. CONFIG_POSITION_INDEPENDENT config lifts that restriction & allowing the code to be loaded to and executed from almost any address. As we enabled CONFIG_POSITION_INDEPENDENT, CONFIG_INIT_SP_RELATIVE is enabled by default, where it will set the early stack pointer at runtime by adding an offset value to &_bss_start. The offset value is taken from SYS_INIT_SP_BSS_OFFSET. SYS_INIT_SP_BSS_OFFSET offset should be large enough so that the early malloc region, global data (gd), and early stack should fit. With commit d8fabcc424bd ("arm64: versal: Increase SYS_MALLOC_F_LEN") SYS_MALLOC_F_LEN is increased from 32KB to 1MB, so we need to accommodate this space with SYS_INIT_SP_BSS_OFFSET. Hence increasing SYS_INIT_SP_BSS_OFFSET to 1.5MB. Signed-off-by: T Karthik Reddy Acked-by: Ashok Reddy Soma Signed-off-by: Michal Simek --- configs/xilinx_versal_virt_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/configs/xilinx_versal_virt_defconfig b/configs/xilinx_versal_virt_defconfig index 707693713a..f4e9a80728 100644 --- a/configs/xilinx_versal_virt_defconfig +++ b/configs/xilinx_versal_virt_defconfig @@ -1,5 +1,6 @@ CONFIG_ARM=y CONFIG_POSITION_INDEPENDENT=y +CONFIG_SYS_INIT_SP_BSS_OFFSET=1572864 CONFIG_ARCH_VERSAL=y CONFIG_SYS_TEXT_BASE=0x8000000 CONFIG_SYS_MALLOC_F_LEN=0x100000 -- 2.39.5