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4e65545f7a
The Renesas RZ/G2L SMARC Evaluation Board Kit consists of the RZ/G2L System-on-Module (SOM) based on the R9A07G044L2 SoC, and a common SMARC carrier board. The ARM TrustedFirmware code for the Renesas RZ/G2L SoC family passes a devicetree blob to the bootloader as an argument in the same was previous R-Car gen3/gen4 SoCs. This blob contains a compatible string which can be used to identify the particular SoC we are running on and this is used to select the appropriate device tree to load. The configuration renesas_rzg2l_smarc_defconfig is added to support building for this target. In the future this defconfig will be extended to support other SoCs and evaluation boards from the RZ/G2L family. Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
68 lines
1.3 KiB
C
68 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* RZ/G2L board support.
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* Copyright (C) 2023 Renesas Electronics Corporation
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <linux/libfdt.h>
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#if IS_ENABLED(CONFIG_MULTI_DTB_FIT)
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/* If the firmware passed a device tree, use it for board identification. */
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extern u64 rcar_atf_boot_args[];
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static bool is_rzg2l_board(const char *board_name)
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{
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void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]);
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return fdt_node_check_compatible(atf_fdt_blob, 0, board_name) == 0;
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}
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int board_fit_config_name_match(const char *name)
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{
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void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]);
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if (fdt_magic(atf_fdt_blob) != FDT_MAGIC)
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return -1;
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if (is_rzg2l_board("renesas,r9a07g044l2"))
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return strcmp(name, "r9a07g044l2-smarc");
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return -1;
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}
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#endif
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static void apply_atf_overlay(void *fdt_blob)
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{
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void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]);
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if (fdt_magic(atf_fdt_blob) == FDT_MAGIC)
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fdt_overlay_apply_node(fdt_blob, 0, atf_fdt_blob, 0);
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}
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int fdtdec_board_setup(const void *fdt_blob)
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{
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apply_atf_overlay((void *)fdt_blob);
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return 0;
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}
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int ft_board_setup(void *blob, struct bd_info *bd)
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{
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return 0;
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}
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int board_init(void)
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{
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return 0;
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}
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void reset_cpu(void)
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{
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/*
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* TODO: Implement reset support once TrustedFirmware supports
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* the appropriate call.
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*/
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}
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