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df9041ec HS |
1 | /* |
2 | * (C) Copyright 2015 Google, Inc | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
f4f57c58 | 7 | #include <clk.h> |
df9041ec HS |
8 | #include <common.h> |
9 | #include <debug_uart.h> | |
10 | #include <dm.h> | |
11 | #include <fdtdec.h> | |
12 | #include <led.h> | |
13 | #include <malloc.h> | |
14 | #include <ram.h> | |
15 | #include <spl.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/hardware.h> | |
21 | #include <asm/arch/periph.h> | |
22 | #include <asm/arch/pmu_rk3188.h> | |
23 | #include <asm/arch/sdram.h> | |
24 | #include <asm/arch/timer.h> | |
25 | #include <dm/pinctrl.h> | |
26 | #include <dm/root.h> | |
27 | #include <dm/test.h> | |
28 | #include <dm/util.h> | |
29 | #include <power/regulator.h> | |
30 | #include <syscon.h> | |
31 | ||
32 | DECLARE_GLOBAL_DATA_PTR; | |
33 | ||
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_of_offset(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 | ||
75 | u32 spl_boot_mode(const u32 boot_device) | |
76 | { | |
77 | return MMCSD_MODE_RAW; | |
78 | } | |
79 | ||
f4f57c58 HS |
80 | static int setup_arm_clock(void) |
81 | { | |
82 | struct udevice *dev; | |
83 | struct clk clk; | |
84 | int ret; | |
85 | ||
86 | ret = rockchip_get_clk(&dev); | |
87 | if (ret) | |
88 | return ret; | |
89 | ||
90 | clk.id = CLK_ARM; | |
91 | ret = clk_request(dev, &clk); | |
92 | if (ret < 0) | |
93 | return ret; | |
94 | ||
95 | ret = clk_set_rate(&clk, 600000000); | |
96 | ||
97 | clk_free(&clk); | |
98 | return ret; | |
99 | } | |
100 | ||
df9041ec HS |
101 | void board_init_f(ulong dummy) |
102 | { | |
103 | struct udevice *pinctrl, *dev; | |
104 | struct rk3188_pmu *pmu; | |
105 | int ret; | |
106 | ||
107 | /* Example code showing how to enable the debug UART on RK3188 */ | |
108 | #ifdef EARLY_UART | |
109 | #include <asm/arch/grf_rk3188.h> | |
110 | /* Enable early UART on the RK3188 */ | |
111 | #define GRF_BASE 0x20008000 | |
112 | struct rk3188_grf * const grf = (void *)GRF_BASE; | |
113 | ||
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 | * Debug UART can be used from here if required: | |
121 | * | |
122 | * debug_uart_init(); | |
123 | * printch('a'); | |
124 | * printhex8(0x1234); | |
125 | * printascii("string"); | |
126 | */ | |
127 | debug_uart_init(); | |
128 | printch('s'); | |
129 | printch('p'); | |
130 | printch('l'); | |
131 | printch('\n'); | |
132 | #endif | |
133 | ||
232cf962 | 134 | ret = spl_early_init(); |
df9041ec | 135 | if (ret) { |
232cf962 | 136 | debug("spl_early_init() failed: %d\n", ret); |
df9041ec HS |
137 | hang(); |
138 | } | |
139 | ||
140 | rockchip_timer_init(); | |
141 | ||
142 | ret = rockchip_get_clk(&dev); | |
143 | if (ret) { | |
144 | debug("CLK init failed: %d\n", ret); | |
145 | return; | |
146 | } | |
147 | ||
148 | /* | |
149 | * Recover the bootrom's stackpointer. | |
150 | * For whatever reason needs to run after rockchip_get_clk. | |
151 | */ | |
152 | pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU); | |
153 | if (IS_ERR(pmu)) | |
154 | error("pmu syscon returned %ld\n", PTR_ERR(pmu)); | |
155 | SAVE_SP_ADDR = readl(&pmu->sys_reg[2]); | |
156 | ||
157 | ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); | |
158 | if (ret) { | |
159 | debug("Pinctrl init failed: %d\n", ret); | |
160 | return; | |
161 | } | |
162 | ||
163 | ret = uclass_get_device(UCLASS_RAM, 0, &dev); | |
164 | if (ret) { | |
165 | debug("DRAM init failed: %d\n", ret); | |
166 | return; | |
167 | } | |
168 | ||
f4f57c58 HS |
169 | setup_arm_clock(); |
170 | ||
df9041ec HS |
171 | #if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT) |
172 | back_to_bootrom(); | |
173 | #endif | |
174 | } | |
175 | ||
176 | static int setup_led(void) | |
177 | { | |
178 | #ifdef CONFIG_SPL_LED | |
179 | struct udevice *dev; | |
180 | char *led_name; | |
181 | int ret; | |
182 | ||
183 | led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led"); | |
184 | if (!led_name) | |
185 | return 0; | |
186 | ret = led_get_by_label(led_name, &dev); | |
187 | if (ret) { | |
188 | debug("%s: get=%d\n", __func__, ret); | |
189 | return ret; | |
190 | } | |
191 | ret = led_set_on(dev, 1); | |
192 | if (ret) | |
193 | return ret; | |
194 | #endif | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | void spl_board_init(void) | |
200 | { | |
201 | struct udevice *pinctrl; | |
202 | int ret; | |
203 | ||
204 | ret = setup_led(); | |
205 | if (ret) { | |
206 | debug("LED ret=%d\n", ret); | |
207 | hang(); | |
208 | } | |
209 | ||
210 | ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); | |
211 | if (ret) { | |
212 | debug("%s: Cannot find pinctrl device\n", __func__); | |
213 | goto err; | |
214 | } | |
215 | ||
216 | #ifdef CONFIG_SPL_MMC_SUPPORT | |
217 | ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD); | |
218 | if (ret) { | |
219 | debug("%s: Failed to set up SD card\n", __func__); | |
220 | goto err; | |
221 | } | |
222 | #endif | |
223 | ||
224 | /* Enable debug UART */ | |
225 | ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); | |
226 | if (ret) { | |
227 | debug("%s: Failed to set up console UART\n", __func__); | |
228 | goto err; | |
229 | } | |
230 | ||
231 | preloader_console_init(); | |
232 | #ifdef CONFIG_ROCKCHIP_SPL_BACK_TO_BROM | |
233 | back_to_bootrom(); | |
234 | #endif | |
235 | return; | |
236 | ||
237 | err: | |
238 | printf("spl_board_init: Error %d\n", ret); | |
239 | ||
240 | /* No way to report error here */ | |
241 | hang(); | |
242 | } |