1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
4 */
5
6 #include <common.h>
7 #include <dm.h>
8 #include <env.h>
9 #include <env_internal.h>
10 #include <init.h>
11 #include <log.h>
12 #include <misc.h>
13 #include <spl.h>
14 #include <syscon.h>
15 #include <u-boot/crc.h>
16 #include <usb.h>
17 #include <dm/pinctrl.h>
18 #include <dm/uclass-internal.h>
19 #include <asm/io.h>
20 #include <asm/setup.h>
21 #include <asm/arch-rockchip/clock.h>
22 #include <asm/arch-rockchip/hardware.h>
23 #include <asm/arch-rockchip/grf_rk3399.h>
24 #include <asm/arch-rockchip/periph.h>
25 #include <asm/arch-rockchip/misc.h>
26 #include <power/regulator.h>
27 #include <u-boot/sha256.h>
28
setup_iodomain(void)29 static void setup_iodomain(void)
30 {
31 const u32 GRF_IO_VSEL_GPIO4CD_SHIFT = 3;
32 struct rk3399_grf_regs *grf =
33 syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
34
35 /*
36 * Set bit 3 in GRF_IO_VSEL so PCIE_RST# works (pin GPIO4_C6).
37 * Linux assumes that PCIE_RST# works out of the box as it probes
38 * PCIe before loading the iodomain driver.
39 */
40 rk_setreg(&grf->io_vsel, 1 << GRF_IO_VSEL_GPIO4CD_SHIFT);
41 }
42
43 /*
44 * Swap mmc0 and mmc1 in boot_targets if booted from SD-Card.
45 *
46 * If bootsource is uSD-card we can assume that we want to use the
47 * SD-Card instead of the eMMC as first boot_target for distroboot.
48 * We only want to swap the defaults and not any custom environment a
49 * user has set. We exit early if a changed boot_targets environment
50 * is detected.
51 */
setup_boottargets(void)52 static int setup_boottargets(void)
53 {
54 const char *boot_device =
55 ofnode_read_chosen_string("u-boot,spl-boot-device");
56 char *env_default, *env;
57
58 if (!boot_device) {
59 debug("%s: /chosen/u-boot,spl-boot-device not set\n",
60 __func__);
61 return -1;
62 }
63 debug("%s: booted from %s\n", __func__, boot_device);
64
65 env_default = env_get_default("boot_targets");
66 env = env_get("boot_targets");
67 if (!env) {
68 debug("%s: boot_targets does not exist\n", __func__);
69 return -1;
70 }
71 debug("%s: boot_targets current: %s - default: %s\n",
72 __func__, env, env_default);
73
74 if (strcmp(env_default, env) != 0) {
75 debug("%s: boot_targets not default, don't change it\n",
76 __func__);
77 return 0;
78 }
79
80 /*
81 * Make the default boot medium between SD Card and eMMC, the one that
82 * was used to load U-Boot proper. If SPI-NOR flash was used, keep
83 * original default order.
84 */
85 if (strcmp(boot_device, "/spi@ff1d0000/flash@0")) {
86 bool sd_booted = !strcmp(boot_device, "/mmc@fe320000");
87 char *mmc0, *mmc1;
88
89 debug("%s: booted from %s\n", __func__,
90 sd_booted ? "SD-Card" : "eMMC");
91 mmc0 = strstr(env, "mmc0");
92 mmc1 = strstr(env, "mmc1");
93
94 if (!mmc0 || !mmc1) {
95 debug("%s: only one mmc boot_target found\n", __func__);
96 return -1;
97 }
98
99 /*
100 * If mmc0 comes first in the boot order and U-Boot proper was
101 * loaded from mmc1, swap mmc0 and mmc1 in the list.
102 * If mmc1 comes first in the boot order and U-Boot proper was
103 * loaded from mmc0, swap mmc0 and mmc1 in the list.
104 */
105 if ((mmc0 < mmc1 && sd_booted) ||
106 (mmc0 > mmc1 && !sd_booted)) {
107 mmc0[3] = '1';
108 mmc1[3] = '0';
109 debug("%s: set boot_targets to: %s\n", __func__, env);
110 env_set("boot_targets", env);
111 }
112 }
113
114 return 0;
115 }
116
mmc_get_env_dev(void)117 int mmc_get_env_dev(void)
118 {
119 const char *boot_device =
120 ofnode_read_chosen_string("u-boot,spl-boot-device");
121
122 if (!boot_device) {
123 debug("%s: /chosen/u-boot,spl-boot-device not set\n",
124 __func__);
125 return CONFIG_SYS_MMC_ENV_DEV;
126 }
127
128 debug("%s: booted from %s\n", __func__, boot_device);
129
130 if (!strcmp(boot_device, "/mmc@fe320000"))
131 return 1;
132
133 if (!strcmp(boot_device, "/mmc@fe330000"))
134 return 0;
135
136 return CONFIG_SYS_MMC_ENV_DEV;
137 }
138
arch_env_get_location(enum env_operation op,int prio)139 enum env_location arch_env_get_location(enum env_operation op, int prio)
140 {
141 const char *boot_device =
142 ofnode_read_chosen_string("u-boot,spl-boot-device");
143
144 if (prio > 0)
145 return ENVL_UNKNOWN;
146
147 if (!boot_device) {
148 debug("%s: /chosen/u-boot,spl-boot-device not set\n",
149 __func__);
150 return ENVL_NOWHERE;
151 }
152
153 debug("%s: booted from %s\n", __func__, boot_device);
154
155 if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH) &&
156 !strcmp(boot_device, "/spi@ff1d0000/flash@0"))
157 return ENVL_SPI_FLASH;
158
159 if (IS_ENABLED(CONFIG_ENV_IS_IN_MMC) &&
160 (!strcmp(boot_device, "/mmc@fe320000") ||
161 !strcmp(boot_device, "/mmc@fe330000")))
162 return ENVL_MMC;
163
164 printf("%s: No environment available: booted from %s but U-Boot "
165 "config does not allow loading environment from it.",
166 __func__, boot_device);
167
168 return ENVL_NOWHERE;
169 }
170
misc_init_r(void)171 int misc_init_r(void)
172 {
173 const u32 cpuid_offset = 0x7;
174 const u32 cpuid_length = 0x10;
175 u8 cpuid[cpuid_length];
176 int ret;
177
178 ret = rockchip_cpuid_from_efuse(cpuid_offset, cpuid_length, cpuid);
179 if (ret)
180 return ret;
181
182 ret = rockchip_cpuid_set(cpuid, cpuid_length);
183 if (ret)
184 return ret;
185
186 ret = rockchip_setup_macaddr();
187 if (ret)
188 return ret;
189
190 setup_iodomain();
191 setup_boottargets();
192
193 return 0;
194 }
195