From: T Karthik Reddy <[email protected]>
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 <[email protected]>
Acked-by: Ashok Reddy Soma <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
---
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 707693713a7e..f4e9a80728d7 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
--
2.31.1
