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 <asm/gpio.h>
16 #include <asm/io.h>
17 #include <asm/arch/bootrom.h>
18 #include <asm/arch/clock.h>
19 #include <asm/arch/hardware.h>
20 #include <asm/arch/periph.h>
21 #include <asm/arch/pmu_rk3188.h>
22 #include <asm/arch/sdram.h>
23 #include <asm/arch/timer.h>
24 #include <dm/pinctrl.h>
25 #include <dm/root.h>
26 #include <dm/test.h>
27 #include <dm/util.h>
28 #include <power/regulator.h>
29 #include <syscon.h>
30
31 DECLARE_GLOBAL_DATA_PTR;
32
spl_boot_device(void)33 u32 spl_boot_device(void)
34 {
35 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
36 const void *blob = gd->fdt_blob;
37 struct udevice *dev;
38 const char *bootdev;
39 int node;
40 int ret;
41
42 bootdev = fdtdec_get_config_string(blob, "u-boot,boot0");
43 debug("Boot device %s\n", bootdev);
44 if (!bootdev)
45 goto fallback;
46
47 node = fdt_path_offset(blob, bootdev);
48 if (node < 0) {
49 debug("node=%d\n", node);
50 goto fallback;
51 }
52 ret = device_get_global_by_of_offset(node, &dev);
53 if (ret) {
54 debug("device at node %s/%d not found: %d\n", bootdev, node,
55 ret);
56 goto fallback;
57 }
58 debug("Found device %s\n", dev->name);
59 switch (device_get_uclass_id(dev)) {
60 case UCLASS_SPI_FLASH:
61 return BOOT_DEVICE_SPI;
62 case UCLASS_MMC:
63 return BOOT_DEVICE_MMC1;
64 default:
65 debug("Booting from device uclass '%s' not supported\n",
66 dev_get_uclass_name(dev));
67 }
68
69 fallback:
70 #endif
71 return BOOT_DEVICE_MMC1;
72 }
73
setup_arm_clock(void)74 static int setup_arm_clock(void)
75 {
76 struct udevice *dev;
77 struct clk clk;
78 int ret;
79
80 ret = rockchip_get_clk(&dev);
81 if (ret)
82 return ret;
83
84 clk.id = CLK_ARM;
85 ret = clk_request(dev, &clk);
86 if (ret < 0)
87 return ret;
88
89 ret = clk_set_rate(&clk, 600000000);
90
91 clk_free(&clk);
92 return ret;
93 }
94
board_init_f(ulong dummy)95 void board_init_f(ulong dummy)
96 {
97 struct udevice *pinctrl, *dev;
98 int ret;
99
100 /* Example code showing how to enable the debug UART on RK3188 */
101 #ifdef EARLY_UART
102 #include <asm/arch/grf_rk3188.h>
103 /* Enable early UART on the RK3188 */
104 #define GRF_BASE 0x20008000
105 struct rk3188_grf * const grf = (void *)GRF_BASE;
106
107 rk_clrsetreg(&grf->gpio1b_iomux,
108 GPIO1B1_MASK << GPIO1B1_SHIFT |
109 GPIO1B0_MASK << GPIO1B0_SHIFT,
110 GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
111 GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
112 /*
113 * Debug UART can be used from here if required:
114 *
115 * debug_uart_init();
116 * printch('a');
117 * printhex8(0x1234);
118 * printascii("string");
119 */
120 debug_uart_init();
121 printch('s');
122 printch('p');
123 printch('l');
124 printch('\n');
125 #endif
126
127 ret = spl_early_init();
128 if (ret) {
129 debug("spl_early_init() failed: %d\n", ret);
130 hang();
131 }
132
133 ret = rockchip_get_clk(&dev);
134 if (ret) {
135 debug("CLK init failed: %d\n", ret);
136 return;
137 }
138
139 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
140 if (ret) {
141 debug("Pinctrl init failed: %d\n", ret);
142 return;
143 }
144
145 ret = uclass_get_device(UCLASS_RAM, 0, &dev);
146 if (ret) {
147 debug("DRAM init failed: %d\n", ret);
148 return;
149 }
150
151 setup_arm_clock();
152 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
153 back_to_bootrom(BROM_BOOT_NEXTSTAGE);
154 #endif
155 }
156
setup_led(void)157 static int setup_led(void)
158 {
159 #ifdef CONFIG_SPL_LED
160 struct udevice *dev;
161 char *led_name;
162 int ret;
163
164 led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
165 if (!led_name)
166 return 0;
167 ret = led_get_by_label(led_name, &dev);
168 if (ret) {
169 debug("%s: get=%d\n", __func__, ret);
170 return ret;
171 }
172 ret = led_set_on(dev, 1);
173 if (ret)
174 return ret;
175 #endif
176
177 return 0;
178 }
179
spl_board_init(void)180 void spl_board_init(void)
181 {
182 struct udevice *pinctrl;
183 int ret;
184
185 ret = setup_led();
186 if (ret) {
187 debug("LED ret=%d\n", ret);
188 hang();
189 }
190
191 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
192 if (ret) {
193 debug("%s: Cannot find pinctrl device\n", __func__);
194 goto err;
195 }
196
197 #ifdef CONFIG_SPL_MMC_SUPPORT
198 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD);
199 if (ret) {
200 debug("%s: Failed to set up SD card\n", __func__);
201 goto err;
202 }
203 #endif
204
205 /* Enable debug UART */
206 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
207 if (ret) {
208 debug("%s: Failed to set up console UART\n", __func__);
209 goto err;
210 }
211
212 preloader_console_init();
213 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)
214 back_to_bootrom(BROM_BOOT_NEXTSTAGE);
215 #endif
216 return;
217
218 err:
219 printf("spl_board_init: Error %d\n", ret);
220
221 /* No way to report error here */
222 hang();
223 }
224