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 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_ofnode(offset_to_ofnode(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 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 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 } 156 157 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 } 179 180 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