mirror of
https://github.com/AsahiLinux/u-boot
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e7fb789612
OF_HOSTFILE is used on sandbox configs only. Although it's pretty unique and not causing any confusions, we are better of having simpler config options for the DTB. So let's replace that with the existing OF_BOARD. U-Boot would then have only three config options for the DTB origin. - OF_SEPARATE, build separately from U-Boot - OF_BOARD, board specific way of providing the DTB - OF_EMBED embedded in the u-boot binary(should not be used in production Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
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/sections.h>
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#include <asm/system.h>
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/*
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* Force data-section, as .bss will not be valid
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* when save_boot_params is invoked.
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*/
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static unsigned long nt_fw_dtb __section(".data");
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/*
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* Save the FDT address provided by TF-A in r2 at boot time
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* This function is called from start.S
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*/
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void save_boot_params(unsigned long r0, unsigned long r1, unsigned long r2,
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unsigned long r3)
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{
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nt_fw_dtb = r2;
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save_boot_params_ret();
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}
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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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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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