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/grf_rk3188.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_ofnode(offset_to_ofnode(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_debug_uart_init(void) 97 { 98 /* Enable early UART on the RK3188 */ 99 #define GRF_BASE 0x20008000 100 struct rk3188_grf * const grf = (void *)GRF_BASE; 101 enum { 102 GPIO1B1_SHIFT = 2, 103 GPIO1B1_MASK = 3, 104 GPIO1B1_GPIO = 0, 105 GPIO1B1_UART2_SOUT, 106 107 GPIO1B0_SHIFT = 0, 108 GPIO1B0_MASK = 3, 109 GPIO1B0_GPIO = 0, 110 GPIO1B0_UART2_SIN, 111 }; 112 113 /* Enable early UART on the RK3188 */ 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 } 120 121 void board_init_f(ulong dummy) 122 { 123 struct udevice *pinctrl, *dev; 124 int ret; 125 126 #define EARLY_UART 127 #ifdef EARLY_UART 128 /* 129 * Debug UART can be used from here if required: 130 * 131 * debug_uart_init(); 132 * printch('a'); 133 * printhex8(0x1234); 134 * printascii("string"); 135 */ 136 debug_uart_init(); 137 printch('s'); 138 printch('p'); 139 printch('l'); 140 printch('\n'); 141 #endif 142 143 #ifdef CONFIG_ROCKCHIP_USB_UART 144 rk_clrsetreg(&grf->uoc0_con[0], 145 SIDDQ_MASK | UOC_DISABLE_MASK | COMMON_ON_N_MASK, 146 1 << SIDDQ_SHIFT | 1 << UOC_DISABLE_SHIFT | 147 1 << COMMON_ON_N_SHIFT); 148 rk_clrsetreg(&grf->uoc0_con[2], 149 SOFT_CON_SEL_MASK, 1 << SOFT_CON_SEL_SHIFT); 150 rk_clrsetreg(&grf->uoc0_con[3], 151 OPMODE_MASK | XCVRSELECT_MASK | 152 TERMSEL_FULLSPEED_MASK | SUSPENDN_MASK, 153 OPMODE_NODRIVING << OPMODE_SHIFT | 154 XCVRSELECT_FSTRANSC << XCVRSELECT_SHIFT | 155 1 << TERMSEL_FULLSPEED_SHIFT | 156 1 << SUSPENDN_SHIFT); 157 rk_clrsetreg(&grf->uoc0_con[0], 158 BYPASSSEL_MASK | BYPASSDMEN_MASK, 159 1 << BYPASSSEL_SHIFT | 1 << BYPASSDMEN_SHIFT); 160 #endif 161 162 ret = spl_early_init(); 163 if (ret) { 164 debug("spl_early_init() failed: %d\n", ret); 165 hang(); 166 } 167 168 ret = rockchip_get_clk(&dev); 169 if (ret) { 170 debug("CLK init failed: %d\n", ret); 171 return; 172 } 173 174 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 175 if (ret) { 176 debug("Pinctrl init failed: %d\n", ret); 177 return; 178 } 179 180 ret = uclass_get_device(UCLASS_RAM, 0, &dev); 181 if (ret) { 182 debug("DRAM init failed: %d\n", ret); 183 return; 184 } 185 186 setup_arm_clock(); 187 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT) 188 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 189 #endif 190 } 191 192 static int setup_led(void) 193 { 194 #ifdef CONFIG_SPL_LED 195 struct udevice *dev; 196 char *led_name; 197 int ret; 198 199 led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led"); 200 if (!led_name) 201 return 0; 202 ret = led_get_by_label(led_name, &dev); 203 if (ret) { 204 debug("%s: get=%d\n", __func__, ret); 205 return ret; 206 } 207 ret = led_set_on(dev, 1); 208 if (ret) 209 return ret; 210 #endif 211 212 return 0; 213 } 214 215 void spl_board_init(void) 216 { 217 struct udevice *pinctrl; 218 int ret; 219 220 ret = setup_led(); 221 if (ret) { 222 debug("LED ret=%d\n", ret); 223 hang(); 224 } 225 226 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 227 if (ret) { 228 debug("%s: Cannot find pinctrl device\n", __func__); 229 goto err; 230 } 231 232 #ifdef CONFIG_SPL_MMC_SUPPORT 233 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD); 234 if (ret) { 235 debug("%s: Failed to set up SD card\n", __func__); 236 goto err; 237 } 238 #endif 239 240 /* Enable debug UART */ 241 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); 242 if (ret) { 243 debug("%s: Failed to set up console UART\n", __func__); 244 goto err; 245 } 246 247 preloader_console_init(); 248 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) 249 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 250 #endif 251 return; 252 253 err: 254 printf("spl_board_init: Error %d\n", ret); 255 256 /* No way to report error here */ 257 hang(); 258 } 259