1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2023 Collabora Ltd.
4 */
5
6 #include <fdtdec.h>
7 #include <fdt_support.h>
8
9 #ifdef CONFIG_OF_BOARD_SETUP
rock5b_add_reserved_memory_fdt_nodes(void * new_blob)10 int rock5b_add_reserved_memory_fdt_nodes(void *new_blob)
11 {
12 struct fdt_memory gap1 = {
13 .start = 0x3fc000000,
14 .end = 0x3fc4fffff,
15 };
16 struct fdt_memory gap2 = {
17 .start = 0x3fff00000,
18 .end = 0x3ffffffff,
19 };
20 unsigned long flags = FDTDEC_RESERVED_MEMORY_NO_MAP;
21 unsigned int ret;
22
23 /*
24 * Inject the reserved-memory nodes into the DTS
25 */
26 ret = fdtdec_add_reserved_memory(new_blob, "gap1", &gap1, NULL, 0,
27 NULL, flags);
28 if (ret)
29 return ret;
30
31 return fdtdec_add_reserved_memory(new_blob, "gap2", &gap2, NULL, 0,
32 NULL, flags);
33 }
34
ft_board_setup(void * blob,struct bd_info * bd)35 int ft_board_setup(void *blob, struct bd_info *bd)
36 {
37 return rock5b_add_reserved_memory_fdt_nodes(blob);
38 }
39 #endif
40