1 /* 2 * (C) Copyright 2015 Google, Inc 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <clk.h> 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 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 96 void board_init_f(ulong dummy) 97 { 98 struct udevice *pinctrl, *dev; 99 int ret; 100 101 /* Example code showing how to enable the debug UART on RK3188 */ 102 #ifdef EARLY_UART 103 #include <asm/arch/grf_rk3188.h> 104 /* Enable early UART on the RK3188 */ 105 #define GRF_BASE 0x20008000 106 struct rk3188_grf * const grf = (void *)GRF_BASE; 107 108 rk_clrsetreg(&grf->gpio1b_iomux, 109 GPIO1B1_MASK << GPIO1B1_SHIFT | 110 GPIO1B0_MASK << GPIO1B0_SHIFT, 111 GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT | 112 GPIO1B0_UART2_SIN << GPIO1B0_SHIFT); 113 /* 114 * Debug UART can be used from here if required: 115 * 116 * debug_uart_init(); 117 * printch('a'); 118 * printhex8(0x1234); 119 * printascii("string"); 120 */ 121 debug_uart_init(); 122 printch('s'); 123 printch('p'); 124 printch('l'); 125 printch('\n'); 126 #endif 127 128 ret = spl_early_init(); 129 if (ret) { 130 debug("spl_early_init() failed: %d\n", ret); 131 hang(); 132 } 133 134 rockchip_timer_init(); 135 136 ret = rockchip_get_clk(&dev); 137 if (ret) { 138 debug("CLK init failed: %d\n", ret); 139 return; 140 } 141 142 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 143 if (ret) { 144 debug("Pinctrl init failed: %d\n", ret); 145 return; 146 } 147 148 ret = uclass_get_device(UCLASS_RAM, 0, &dev); 149 if (ret) { 150 debug("DRAM init failed: %d\n", ret); 151 return; 152 } 153 154 setup_arm_clock(); 155 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT) 156 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 157 #endif 158 } 159 160 static int setup_led(void) 161 { 162 #ifdef CONFIG_SPL_LED 163 struct udevice *dev; 164 char *led_name; 165 int ret; 166 167 led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led"); 168 if (!led_name) 169 return 0; 170 ret = led_get_by_label(led_name, &dev); 171 if (ret) { 172 debug("%s: get=%d\n", __func__, ret); 173 return ret; 174 } 175 ret = led_set_on(dev, 1); 176 if (ret) 177 return ret; 178 #endif 179 180 return 0; 181 } 182 183 void spl_board_init(void) 184 { 185 struct udevice *pinctrl; 186 int ret; 187 188 ret = setup_led(); 189 if (ret) { 190 debug("LED ret=%d\n", ret); 191 hang(); 192 } 193 194 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 195 if (ret) { 196 debug("%s: Cannot find pinctrl device\n", __func__); 197 goto err; 198 } 199 200 #ifdef CONFIG_SPL_MMC_SUPPORT 201 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD); 202 if (ret) { 203 debug("%s: Failed to set up SD card\n", __func__); 204 goto err; 205 } 206 #endif 207 208 /* Enable debug UART */ 209 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); 210 if (ret) { 211 debug("%s: Failed to set up console UART\n", __func__); 212 goto err; 213 } 214 215 preloader_console_init(); 216 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) 217 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 218 #endif 219 return; 220 221 err: 222 printf("spl_board_init: Error %d\n", ret); 223 224 /* No way to report error here */ 225 hang(); 226 } 227