1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2015 Google, Inc
4 */
5
6 #include <clk.h>
7 #include <common.h>
8 #include <debug_uart.h>
9 #include <dm.h>
10 #include <fdtdec.h>
11 #include <led.h>
12 #include <malloc.h>
13 #include <ram.h>
14 #include <spl.h>
15 #include <syscon.h>
16 #include <asm/gpio.h>
17 #include <asm/io.h>
18 #include <asm/arch/bootrom.h>
19 #include <asm/arch/clock.h>
20 #include <asm/arch/grf_rk3188.h>
21 #include <asm/arch/hardware.h>
22 #include <asm/arch/periph.h>
23 #include <asm/arch/pmu_rk3188.h>
24 #include <asm/arch/sdram.h>
25 #include <asm/arch/timer.h>
26 #include <dm/pinctrl.h>
27 #include <dm/root.h>
28 #include <dm/test.h>
29 #include <dm/util.h>
30 #include <power/regulator.h>
31
32 DECLARE_GLOBAL_DATA_PTR;
33
spl_boot_device(void)34 u32 spl_boot_device(void)
35 {
36 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
37 const void *blob = gd->fdt_blob;
38 struct udevice *dev;
39 const char *bootdev;
40 int node;
41 int ret;
42
43 bootdev = fdtdec_get_config_string(blob, "u-boot,boot0");
44 debug("Boot device %s\n", bootdev);
45 if (!bootdev)
46 goto fallback;
47
48 node = fdt_path_offset(blob, bootdev);
49 if (node < 0) {
50 debug("node=%d\n", node);
51 goto fallback;
52 }
53 ret = device_get_global_by_ofnode(offset_to_ofnode(node), &dev);
54 if (ret) {
55 debug("device at node %s/%d not found: %d\n", bootdev, node,
56 ret);
57 goto fallback;
58 }
59 debug("Found device %s\n", dev->name);
60 switch (device_get_uclass_id(dev)) {
61 case UCLASS_SPI_FLASH:
62 return BOOT_DEVICE_SPI;
63 case UCLASS_MMC:
64 return BOOT_DEVICE_MMC1;
65 default:
66 debug("Booting from device uclass '%s' not supported\n",
67 dev_get_uclass_name(dev));
68 }
69
70 fallback:
71 #endif
72 return BOOT_DEVICE_MMC1;
73 }
74
setup_arm_clock(void)75 static int setup_arm_clock(void)
76 {
77 struct udevice *dev;
78 struct clk clk;
79 int ret;
80
81 ret = rockchip_get_clk(&dev);
82 if (ret)
83 return ret;
84
85 clk.id = CLK_ARM;
86 ret = clk_request(dev, &clk);
87 if (ret < 0)
88 return ret;
89
90 ret = clk_set_rate(&clk, 600000000);
91
92 clk_free(&clk);
93 return ret;
94 }
95
board_debug_uart_init(void)96 void board_debug_uart_init(void)
97 {
98 /* Enable early UART on the RK3188 */
99 #define GRF_BASE 0x20008000
100 struct rk3188_grf * const grf = (void *)GRF_BASE;
101 enum {
102 GPIO1B1_SHIFT = 2,
103 GPIO1B1_MASK = 3,
104 GPIO1B1_GPIO = 0,
105 GPIO1B1_UART2_SOUT,
106
107 GPIO1B0_SHIFT = 0,
108 GPIO1B0_MASK = 3,
109 GPIO1B0_GPIO = 0,
110 GPIO1B0_UART2_SIN,
111 };
112
113 /* Enable early UART on the RK3188 */
114 rk_clrsetreg(&grf->gpio1b_iomux,
115 GPIO1B1_MASK << GPIO1B1_SHIFT |
116 GPIO1B0_MASK << GPIO1B0_SHIFT,
117 GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
118 GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
119 }
120
board_init_f(ulong dummy)121 void board_init_f(ulong dummy)
122 {
123 struct udevice *dev;
124 int ret;
125
126 #define EARLY_UART
127 #ifdef EARLY_UART
128 /*
129 * Debug UART can be used from here if required:
130 *
131 * debug_uart_init();
132 * printch('a');
133 * printhex8(0x1234);
134 * printascii("string");
135 */
136 debug_uart_init();
137 printascii("U-Boot SPL board init");
138 #endif
139
140 #ifdef CONFIG_ROCKCHIP_USB_UART
141 rk_clrsetreg(&grf->uoc0_con[0],
142 SIDDQ_MASK | UOC_DISABLE_MASK | COMMON_ON_N_MASK,
143 1 << SIDDQ_SHIFT | 1 << UOC_DISABLE_SHIFT |
144 1 << COMMON_ON_N_SHIFT);
145 rk_clrsetreg(&grf->uoc0_con[2],
146 SOFT_CON_SEL_MASK, 1 << SOFT_CON_SEL_SHIFT);
147 rk_clrsetreg(&grf->uoc0_con[3],
148 OPMODE_MASK | XCVRSELECT_MASK |
149 TERMSEL_FULLSPEED_MASK | SUSPENDN_MASK,
150 OPMODE_NODRIVING << OPMODE_SHIFT |
151 XCVRSELECT_FSTRANSC << XCVRSELECT_SHIFT |
152 1 << TERMSEL_FULLSPEED_SHIFT |
153 1 << SUSPENDN_SHIFT);
154 rk_clrsetreg(&grf->uoc0_con[0],
155 BYPASSSEL_MASK | BYPASSDMEN_MASK,
156 1 << BYPASSSEL_SHIFT | 1 << BYPASSDMEN_SHIFT);
157 #endif
158
159 ret = spl_early_init();
160 if (ret) {
161 debug("spl_early_init() failed: %d\n", ret);
162 hang();
163 }
164
165 ret = rockchip_get_clk(&dev);
166 if (ret) {
167 debug("CLK init failed: %d\n", ret);
168 return;
169 }
170
171 ret = uclass_get_device(UCLASS_RAM, 0, &dev);
172 if (ret) {
173 debug("DRAM init failed: %d\n", ret);
174 return;
175 }
176
177 setup_arm_clock();
178 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
179 back_to_bootrom(BROM_BOOT_NEXTSTAGE);
180 #endif
181 }
182
setup_led(void)183 static int setup_led(void)
184 {
185 #ifdef CONFIG_SPL_LED
186 struct udevice *dev;
187 char *led_name;
188 int ret;
189
190 led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
191 if (!led_name)
192 return 0;
193 ret = led_get_by_label(led_name, &dev);
194 if (ret) {
195 debug("%s: get=%d\n", __func__, ret);
196 return ret;
197 }
198 ret = led_set_on(dev, 1);
199 if (ret)
200 return ret;
201 #endif
202
203 return 0;
204 }
205
spl_board_init(void)206 void spl_board_init(void)
207 {
208 int ret;
209
210 ret = setup_led();
211 if (ret) {
212 debug("LED ret=%d\n", ret);
213 hang();
214 }
215
216 preloader_console_init();
217 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)
218 back_to_bootrom(BROM_BOOT_NEXTSTAGE);
219 #endif
220 return;
221 }
222