1 /* 2 * (C) Copyright 2015 Google, Inc 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 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_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 74 u32 spl_boot_mode(const u32 boot_device) 75 { 76 return MMCSD_MODE_RAW; 77 } 78 79 void board_init_f(ulong dummy) 80 { 81 struct udevice *pinctrl, *dev; 82 struct rk3188_pmu *pmu; 83 int ret; 84 85 /* Example code showing how to enable the debug UART on RK3188 */ 86 #ifdef EARLY_UART 87 #include <asm/arch/grf_rk3188.h> 88 /* Enable early UART on the RK3188 */ 89 #define GRF_BASE 0x20008000 90 struct rk3188_grf * const grf = (void *)GRF_BASE; 91 92 rk_clrsetreg(&grf->gpio1b_iomux, 93 GPIO1B1_MASK << GPIO1B1_SHIFT | 94 GPIO1B0_MASK << GPIO1B0_SHIFT, 95 GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT | 96 GPIO1B0_UART2_SIN << GPIO1B0_SHIFT); 97 /* 98 * Debug UART can be used from here if required: 99 * 100 * debug_uart_init(); 101 * printch('a'); 102 * printhex8(0x1234); 103 * printascii("string"); 104 */ 105 debug_uart_init(); 106 printch('s'); 107 printch('p'); 108 printch('l'); 109 printch('\n'); 110 #endif 111 112 ret = spl_init(); 113 if (ret) { 114 debug("spl_init() failed: %d\n", ret); 115 hang(); 116 } 117 118 rockchip_timer_init(); 119 120 ret = rockchip_get_clk(&dev); 121 if (ret) { 122 debug("CLK init failed: %d\n", ret); 123 return; 124 } 125 126 /* 127 * Recover the bootrom's stackpointer. 128 * For whatever reason needs to run after rockchip_get_clk. 129 */ 130 pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU); 131 if (IS_ERR(pmu)) 132 error("pmu syscon returned %ld\n", PTR_ERR(pmu)); 133 SAVE_SP_ADDR = readl(&pmu->sys_reg[2]); 134 135 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 136 if (ret) { 137 debug("Pinctrl init failed: %d\n", ret); 138 return; 139 } 140 141 ret = uclass_get_device(UCLASS_RAM, 0, &dev); 142 if (ret) { 143 debug("DRAM init failed: %d\n", ret); 144 return; 145 } 146 147 #if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT) 148 back_to_bootrom(); 149 #endif 150 } 151 152 static int setup_led(void) 153 { 154 #ifdef CONFIG_SPL_LED 155 struct udevice *dev; 156 char *led_name; 157 int ret; 158 159 led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led"); 160 if (!led_name) 161 return 0; 162 ret = led_get_by_label(led_name, &dev); 163 if (ret) { 164 debug("%s: get=%d\n", __func__, ret); 165 return ret; 166 } 167 ret = led_set_on(dev, 1); 168 if (ret) 169 return ret; 170 #endif 171 172 return 0; 173 } 174 175 void spl_board_init(void) 176 { 177 struct udevice *pinctrl; 178 int ret; 179 180 ret = setup_led(); 181 if (ret) { 182 debug("LED ret=%d\n", ret); 183 hang(); 184 } 185 186 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 187 if (ret) { 188 debug("%s: Cannot find pinctrl device\n", __func__); 189 goto err; 190 } 191 192 #ifdef CONFIG_SPL_MMC_SUPPORT 193 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD); 194 if (ret) { 195 debug("%s: Failed to set up SD card\n", __func__); 196 goto err; 197 } 198 #endif 199 200 /* Enable debug UART */ 201 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); 202 if (ret) { 203 debug("%s: Failed to set up console UART\n", __func__); 204 goto err; 205 } 206 207 preloader_console_init(); 208 #ifdef CONFIG_ROCKCHIP_SPL_BACK_TO_BROM 209 back_to_bootrom(); 210 #endif 211 return; 212 213 err: 214 printf("spl_board_init: Error %d\n", ret); 215 216 /* No way to report error here */ 217 hang(); 218 } 219