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https://github.com/AsahiLinux/u-boot
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dbeaca79b7
The STM32MP15xx platform currently comes with two incompatible implementations of save_boot_params() weak function override. Factor the save_boot_params() implementation into common cpu.c code and provide accessors to read out both ROM API table address and DT address from any place in the code instead. Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Marek Vasut <marex@denx.de>
35 lines
919 B
C
35 lines
919 B
C
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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/*
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* Copyright (C) 2019, STMicroelectronics - All Rights Reserved
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*/
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#define LOG_CATEGORY LOGC_ARCH
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#include <common.h>
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#include <log.h>
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#include <linux/libfdt.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/sections.h>
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#include <asm/system.h>
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/*
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* Use the saved FDT address provided by TF-A at boot time (NT_FW_CONFIG =
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* Non Trusted Firmware configuration file) when the pointer is valid
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*/
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void *board_fdt_blob_setup(int *err)
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{
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unsigned long nt_fw_dtb = get_stm32mp_bl2_dtb();
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log_debug("%s: nt_fw_dtb=%lx\n", __func__, nt_fw_dtb);
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*err = 0;
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/* use external device tree only if address is valid */
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if (nt_fw_dtb >= STM32_DDR_BASE) {
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if (fdt_magic(nt_fw_dtb) == FDT_MAGIC)
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return (void *)nt_fw_dtb;
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log_debug("%s: DTB not found.\n", __func__);
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}
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log_debug("%s: fall back to builtin DTB, %p\n", __func__, &_end);
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return (void *)&_end;
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}
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