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xilinx: zynqmp: Enable stack relocation to DDR
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@xilinx.com>
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@ -8,6 +8,9 @@ CONFIG_SYS_MEMTEST_END=0x00001000
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CONFIG_SYS_SPI_U_BOOT_OFFS=0x100000
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CONFIG_DM_GPIO=y
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CONFIG_DEFAULT_DEVICE_TREE="zynqmp-zcu100-revC"
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CONFIG_SPL_STACK_R_ADDR=0x18000000
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CONFIG_SPL_SIZE_LIMIT=0x2a000
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CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK=0x0
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CONFIG_SPL=y
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CONFIG_SPL_SPI_FLASH_SUPPORT=y
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CONFIG_SPL_SPI_SUPPORT=y
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@ -26,6 +29,7 @@ CONFIG_USE_PREBOOT=y
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CONFIG_PREBOOT="run scsi_init;usb start"
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CONFIG_BOARD_EARLY_INIT_F=y
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CONFIG_BOARD_EARLY_INIT_R=y
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CONFIG_SPL_STACK_R=y
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CONFIG_SPL_FPGA=y
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CONFIG_SPL_OS_BOOT=y
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CONFIG_SPL_RAM_SUPPORT=y
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