Message ID | 7a7c5d657a968190e0676251dbd85a947433d592.1620822936.git.michal.simek@xilinx.com |
---|---|
State | Accepted |
Commit | 2a6e6c81f454d44c940203051f72991eece5bf51 |
Delegated to: | Michal Simek |
Headers | show |
Series | xilinx: versal: Enable CONFIG_POSITION_INDEPENDENT | expand |
st 12. 5. 2021 v 14:35 odesÃlatel Michal Simek <michal.simek@xilinx.com> napsal: > > From: T Karthik Reddy <t.karthik.reddy@xilinx.com> > > 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 <t.karthik.reddy@xilinx.com> > Acked-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com> > Signed-off-by: Michal Simek <michal.simek@xilinx.com> > --- > > 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 > Applied. M
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