1 /*
2 * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <errno.h>
8 #include <stdbool.h>
9
10 #include <common/debug.h>
11 #include <common/fdt_wrappers.h>
12 #include <drivers/st/stm32mp_ram.h>
13 #include <libfdt.h>
14
15 #include <platform_def.h>
16
stm32mp_ddr_dt_get_info(void * fdt,int node,struct stm32mp_ddr_info * info)17 int stm32mp_ddr_dt_get_info(void *fdt, int node, struct stm32mp_ddr_info *info)
18 {
19 int ret;
20
21 ret = fdt_read_uint32(fdt, node, "st,mem-speed", &info->speed);
22 if (ret < 0) {
23 VERBOSE("%s: no st,mem-speed\n", __func__);
24 return -EINVAL;
25 }
26 ret = fdt_read_uint32(fdt, node, "st,mem-size", &info->size);
27 if (ret < 0) {
28 VERBOSE("%s: no st,mem-size\n", __func__);
29 return -EINVAL;
30 }
31 info->name = fdt_getprop(fdt, node, "st,mem-name", NULL);
32 if (info->name == NULL) {
33 VERBOSE("%s: no st,mem-name\n", __func__);
34 return -EINVAL;
35 }
36
37 INFO("RAM: %s\n", info->name);
38
39 return 0;
40 }
41
stm32mp_ddr_dt_get_param(void * fdt,int node,const struct stm32mp_ddr_param * param,uint32_t param_size,uintptr_t config)42 int stm32mp_ddr_dt_get_param(void *fdt, int node, const struct stm32mp_ddr_param *param,
43 uint32_t param_size, uintptr_t config)
44 {
45 int ret;
46 uint32_t idx;
47
48 for (idx = 0U; idx < param_size; idx++) {
49 ret = fdt_read_uint32_array(fdt, node, param[idx].name, param[idx].size,
50 (void *)(config + param[idx].offset));
51
52 VERBOSE("%s: %s[0x%x] = %d\n", __func__, param[idx].name, param[idx].size, ret);
53 if (ret != 0) {
54 ERROR("%s: Cannot read %s, error=%d\n", __func__, param[idx].name, ret);
55 return -EINVAL;
56 }
57 }
58
59 return 0;
60 }
61