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 u32 spl_boot_mode(const u32 boot_device) 76 { 77 return MMCSD_MODE_RAW; 78 } 79 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 } 100 101 void board_init_f(ulong dummy) 102 { 103 struct udevice *pinctrl, *dev; 104 int ret; 105 106 /* Example code showing how to enable the debug UART on RK3188 */ 107 #ifdef EARLY_UART 108 #include <asm/arch/grf_rk3188.h> 109 /* Enable early UART on the RK3188 */ 110 #define GRF_BASE 0x20008000 111 struct rk3188_grf * const grf = (void *)GRF_BASE; 112 113 rk_clrsetreg(&grf->gpio1b_iomux, 114 GPIO1B1_MASK << GPIO1B1_SHIFT | 115 GPIO1B0_MASK << GPIO1B0_SHIFT, 116 GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT | 117 GPIO1B0_UART2_SIN << GPIO1B0_SHIFT); 118 /* 119 * Debug UART can be used from here if required: 120 * 121 * debug_uart_init(); 122 * printch('a'); 123 * printhex8(0x1234); 124 * printascii("string"); 125 */ 126 debug_uart_init(); 127 printch('s'); 128 printch('p'); 129 printch('l'); 130 printch('\n'); 131 #endif 132 133 ret = spl_early_init(); 134 if (ret) { 135 debug("spl_early_init() failed: %d\n", ret); 136 hang(); 137 } 138 139 rockchip_timer_init(); 140 141 ret = rockchip_get_clk(&dev); 142 if (ret) { 143 debug("CLK init failed: %d\n", ret); 144 return; 145 } 146 147 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 148 if (ret) { 149 debug("Pinctrl init failed: %d\n", ret); 150 return; 151 } 152 153 ret = uclass_get_device(UCLASS_RAM, 0, &dev); 154 if (ret) { 155 debug("DRAM init failed: %d\n", ret); 156 return; 157 } 158 159 setup_arm_clock(); 160 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT) 161 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 162 #endif 163 } 164 165 static int setup_led(void) 166 { 167 #ifdef CONFIG_SPL_LED 168 struct udevice *dev; 169 char *led_name; 170 int ret; 171 172 led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led"); 173 if (!led_name) 174 return 0; 175 ret = led_get_by_label(led_name, &dev); 176 if (ret) { 177 debug("%s: get=%d\n", __func__, ret); 178 return ret; 179 } 180 ret = led_set_on(dev, 1); 181 if (ret) 182 return ret; 183 #endif 184 185 return 0; 186 } 187 188 void spl_board_init(void) 189 { 190 struct udevice *pinctrl; 191 int ret; 192 193 ret = setup_led(); 194 if (ret) { 195 debug("LED ret=%d\n", ret); 196 hang(); 197 } 198 199 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 200 if (ret) { 201 debug("%s: Cannot find pinctrl device\n", __func__); 202 goto err; 203 } 204 205 #ifdef CONFIG_SPL_MMC_SUPPORT 206 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD); 207 if (ret) { 208 debug("%s: Failed to set up SD card\n", __func__); 209 goto err; 210 } 211 #endif 212 213 /* Enable debug UART */ 214 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); 215 if (ret) { 216 debug("%s: Failed to set up console UART\n", __func__); 217 goto err; 218 } 219 220 preloader_console_init(); 221 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) 222 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 223 #endif 224 return; 225 226 err: 227 printf("spl_board_init: Error %d\n", ret); 228 229 /* No way to report error here */ 230 hang(); 231 } 232