[PATCH] xilinx: zynqmp: Enable stack relocation to DDR

[Michal Simek]

út 24. 8. 2021 v 15:25 odesílatel Michal Simek <michal.simek at xilinx.com> napsal:
>
> There is no space in OCM for SPL stack because the space in OCM is occupied
> by TF-A. That's why move relocate stack to DDR to 0x18000000 address
> and also enable SPL_SIZE_LIMIT not to be more then 0xfffea000 which is
> default address for TFA.
>
> It is good to summarize current DDR usage in SPL flow.
> 0-0x80000 is used for BSS
>  (CONFIG_SPL_BSS_START_ADDR, CONFIG_SPL_BSS_MAX_SIZE)
> 0x100000 is used for DTB passing address
>  (CONFIG_XILINX_OF_BOARD_DTB_ADDR)
> 0x17fffe70 - CONFIG_SPL_STACK_R_ADDR - is used for GD
> 0x18000000 is used for SPL stack
>  (CONFIG_SPL_STACK_R_ADDR)
> 0x20000000-0x21000000 is used for SPL malloc area
>  (CONFIG_SYS_SPL_MALLOC_START, CONFIG_SYS_SPL_MALLOC_SIZE)
>
> Signed-off-by: Michal Simek <michal.simek at xilinx.com>
> ---
>
>  configs/xilinx_zynqmp_virt_defconfig | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/configs/xilinx_zynqmp_virt_defconfig b/configs/xilinx_zynqmp_virt_defconfig
> index 8d82fe918a60..00f7133d775a 100644
> --- a/configs/xilinx_zynqmp_virt_defconfig
> +++ b/configs/xilinx_zynqmp_virt_defconfig
> @@ -8,6 +8,9 @@ CONFIG_SYS_MEMTEST_END=0x00001000
>  CONFIG_SYS_SPI_U_BOOT_OFFS=0x100000
>  CONFIG_DM_GPIO=y
>  CONFIG_DEFAULT_DEVICE_TREE="zynqmp-zcu100-revC"
> +CONFIG_SPL_STACK_R_ADDR=0x18000000
> +CONFIG_SPL_SIZE_LIMIT=0x2a000
> +CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK=0x0
>  CONFIG_SPL=y
>  CONFIG_SPL_SPI_FLASH_SUPPORT=y
>  CONFIG_SPL_SPI_SUPPORT=y
> @@ -28,6 +31,7 @@ CONFIG_USE_PREBOOT=y
>  CONFIG_PREBOOT="run scsi_init;usb start"
>  CONFIG_BOARD_EARLY_INIT_F=y
>  CONFIG_BOARD_EARLY_INIT_R=y
> +CONFIG_SPL_STACK_R=y
>  CONFIG_SPL_FPGA=y
>  CONFIG_SPL_OS_BOOT=y
>  CONFIG_SPL_RAM_SUPPORT=y
> --
> 2.33.0
>

Applied.
M


-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Xilinx Microblaze
Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs
U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal SoCs