~funderscore blog cgit wiki get in touch
aboutsummaryrefslogtreecommitdiff
blob: c11494722bc7aee5a8d9a2ed5a7376511f9232e3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 2010-2016, NVIDIA CORPORATION.
 */

#include <common.h>
#include <fdtdec.h>
#include <stdlib.h>
#include <asm/arch-tegra/cboot.h>
#include <asm/arch-tegra/gpu.h>

/*
 * This function is called right before the kernel is booted. "blob" is the
 * device tree that will be passed to the kernel.
 */
int ft_system_setup(void *blob, struct bd_info *bd)
{
	const char *gpu_compats[] = {
#if defined(CONFIG_TEGRA124)
		"nvidia,gk20a",
#endif
#if defined(CONFIG_TEGRA210)
		"nvidia,gm20b",
#endif
	};
	int i, ret;

	/* Enable GPU node if GPU setup has been performed */
	for (i = 0; i < ARRAY_SIZE(gpu_compats); i++) {
		ret = tegra_gpu_enable_node(blob, gpu_compats[i]);
		if (ret)
			return ret;
	}

	return 0;
}

#if defined(CONFIG_ARM64)
void ft_mac_address_setup(void *fdt)
{
	const void *cboot_fdt = (const void *)cboot_boot_x0;
	uint8_t mac[ETH_ALEN], local_mac[ETH_ALEN];
	const char *path;
	int offset, err;

	err = cboot_get_ethaddr(cboot_fdt, local_mac);
	if (err < 0)
		memset(local_mac, 0, ETH_ALEN);

	path = fdt_get_alias(fdt, "ethernet");
	if (!path)
		return;

	debug("ethernet alias found: %s\n", path);

	offset = fdt_path_offset(fdt, path);
	if (offset < 0) {
		printf("ethernet alias points to absent node %s\n", path);
		return;
	}

	if (is_valid_ethaddr(local_mac)) {
		err = fdt_setprop(fdt, offset, "local-mac-address", local_mac,
				  ETH_ALEN);
		if (!err)
			debug("Local MAC address set: %pM\n", local_mac);
	}

	if (eth_env_get_enetaddr("ethaddr", mac)) {
		if (memcmp(local_mac, mac, ETH_ALEN) != 0) {
			err = fdt_setprop(fdt, offset, "mac-address", mac,
					  ETH_ALEN);
			if (!err)
				debug("MAC address set: %pM\n", mac);
		}
	}
}

static int ft_copy_carveout(void *dst, const void *src, const char *node)
{
	const char *names = "memory-region-names";
	struct fdt_memory carveout;
	unsigned int index = 0;
	int err, offset, len;
	const void *prop;

	while (true) {
		const char **compatibles = NULL;
		unsigned int num_compatibles;
		unsigned long flags;
		char *copy = NULL;
		const char *name;

		err = fdtdec_get_carveout(src, node, "memory-region", index,
					  &carveout, &name, &compatibles,
					  &num_compatibles, &flags);
		if (err < 0) {
			if (err != -FDT_ERR_NOTFOUND)
				printf("failed to get carveout for %s: %d\n",
				       node, err);
			else
				break;

			return err;
		}

		if (name) {
			const char *ptr = strchr(name, '@');

			if (ptr) {
				copy = strndup(name, ptr - name);
				name = copy;
			}
		} else {
			name = "carveout";
		}

		err = fdtdec_set_carveout(dst, node, "memory-region", index,
					  &carveout, name, compatibles,
					  num_compatibles, flags);
		if (err < 0) {
			printf("failed to set carveout for %s: %d\n", node,
			       err);
			return err;
		}

		if (copy)
			free(copy);

		index++;
	}

	offset = fdt_path_offset(src, node);
	if (offset < 0) {
		debug("failed to find source offset for %s: %s\n", node,
		      fdt_strerror(err));
		return err;
	}

	prop = fdt_getprop(src, offset, names, &len);
	if (prop) {
		offset = fdt_path_offset(dst, node);
		if (offset < 0) {
			debug("failed to find destination offset for %s: %s\n",
			      node, fdt_strerror(err));
			return err;
		}

		err = fdt_setprop(dst, offset, "memory-region-names", prop,
				  len);
		if (err < 0) {
			debug("failed to copy \"%s\" property: %s\n", names,
			      fdt_strerror(err));
			return err;
		}
	}

	return 0;
}

void ft_carveout_setup(void *fdt, const char * const *nodes, unsigned int count)
{
	const void *cboot_fdt = (const void *)cboot_boot_x0;
	unsigned int i;
	int err;

	for (i = 0; i < count; i++) {
		printf("copying carveout for %s...\n", nodes[i]);

		err = ft_copy_carveout(fdt, cboot_fdt, nodes[i]);
		if (err < 0) {
			if (err != -FDT_ERR_NOTFOUND)
				printf("failed to copy carveout for %s: %d\n",
				       nodes[i], err);

			continue;
		}
	}
}
#endif