]> Git Repo - u-boot.git/blob - arch/arm/mach-stm32mp/boot_params.c
Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"
[u-boot.git] / arch / arm / mach-stm32mp / boot_params.c
1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
2 /*
3  * Copyright (C) 2019, STMicroelectronics - All Rights Reserved
4  */
5
6 #define LOG_CATEGORY LOGC_ARCH
7
8 #include <config.h>
9 #include <log.h>
10 #include <linux/libfdt.h>
11 #include <asm/arch/sys_proto.h>
12 #include <asm/sections.h>
13 #include <asm/system.h>
14
15 /*
16  * Use the saved FDT address provided by TF-A at boot time (NT_FW_CONFIG =
17  * Non Trusted Firmware configuration file) when the pointer is valid
18  */
19 void *board_fdt_blob_setup(int *err)
20 {
21         unsigned long nt_fw_dtb = get_stm32mp_bl2_dtb();
22
23         log_debug("%s: nt_fw_dtb=%lx\n", __func__, nt_fw_dtb);
24
25         *err = 0;
26         /* use external device tree only if address is valid */
27         if (nt_fw_dtb >= STM32_DDR_BASE) {
28                 if (fdt_magic(nt_fw_dtb) == FDT_MAGIC)
29                         return (void *)nt_fw_dtb;
30                 log_debug("%s: DTB not found.\n", __func__);
31         }
32         log_debug("%s: fall back to builtin DTB, %p\n", __func__, _end);
33
34         return (void *)_end;
35 }
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