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Diffstat (limited to 'include/sbi_utils/fdt/fdt_helper.h')
| -rw-r--r-- | include/sbi_utils/fdt/fdt_helper.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/sbi_utils/fdt/fdt_helper.h b/include/sbi_utils/fdt/fdt_helper.h new file mode 100644 index 0000000..a6c3073 --- /dev/null +++ b/include/sbi_utils/fdt/fdt_helper.h @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: BSD-2-Clause +/* + * fdt_helper.h - Flat Device Tree manipulation helper routines + * Implement helper routines on top of libfdt for OpenSBI usage + * + * Copyright (C) 2020 Bin Meng <bmeng.cn@gmail.com> + */ + +#ifndef __FDT_HELPER_H__ +#define __FDT_HELPER_H__ + +/** + * Fix up the reserved memory node in the device tree + * + * This routine inserts a child node of the reserved memory node in the device + * tree that describes the protected memory region done by OpenSBI via PMP. + * + * It is recommended that platform codes call this helper in their final_init() + * + * @param fdt: device tree blob + * @return zero on success and -ve on failure + */ +int fdt_reserved_memory_fixup(void *fdt); + +#endif /* __FDT_HELPER_H__ */ |