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 <i2c.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/sdram.h> 23 #include <asm/arch/sys_proto.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 <power/rk8xx_pmic.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 #elif defined(CONFIG_TARGET_CHROMEBOOK_JERRY) || \ 72 defined(CONFIG_TARGET_CHROMEBIT_MICKEY) || \ 73 defined(CONFIG_TARGET_CHROMEBOOK_MINNIE) 74 return BOOT_DEVICE_SPI; 75 #endif 76 return BOOT_DEVICE_MMC1; 77 } 78 79 u32 spl_boot_mode(const u32 boot_device) 80 { 81 return MMCSD_MODE_RAW; 82 } 83 84 #ifdef CONFIG_SPL_MMC_SUPPORT 85 static int configure_emmc(struct udevice *pinctrl) 86 { 87 #if defined(CONFIG_TARGET_CHROMEBOOK_JERRY) 88 89 struct gpio_desc desc; 90 int ret; 91 92 pinctrl_request_noflags(pinctrl, PERIPH_ID_EMMC); 93 94 /* 95 * TODO(sjg@chromium.org): Pick this up from device tree or perhaps 96 * use the EMMC_PWREN setting. 97 */ 98 ret = dm_gpio_lookup_name("D9", &desc); 99 if (ret) { 100 debug("gpio ret=%d\n", ret); 101 return ret; 102 } 103 ret = dm_gpio_request(&desc, "emmc_pwren"); 104 if (ret) { 105 debug("gpio_request ret=%d\n", ret); 106 return ret; 107 } 108 ret = dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT); 109 if (ret) { 110 debug("gpio dir ret=%d\n", ret); 111 return ret; 112 } 113 ret = dm_gpio_set_value(&desc, 1); 114 if (ret) { 115 debug("gpio value ret=%d\n", ret); 116 return ret; 117 } 118 #endif 119 return 0; 120 } 121 #endif 122 123 #if !defined(CONFIG_SPL_OF_PLATDATA) 124 static int phycore_init(void) 125 { 126 struct udevice *pmic; 127 int ret; 128 129 ret = uclass_first_device_err(UCLASS_PMIC, &pmic); 130 if (ret) 131 return ret; 132 133 #if defined(CONFIG_SPL_POWER_SUPPORT) 134 /* Increase USB input current to 2A */ 135 ret = rk818_spl_configure_usb_input_current(pmic, 2000); 136 if (ret) 137 return ret; 138 139 /* Close charger when USB lower then 3.26V */ 140 ret = rk818_spl_configure_usb_chrg_shutdown(pmic, 3260000); 141 if (ret) 142 return ret; 143 #endif 144 145 return 0; 146 } 147 #endif 148 149 void board_init_f(ulong dummy) 150 { 151 struct udevice *pinctrl; 152 struct udevice *dev; 153 int ret; 154 155 /* Example code showing how to enable the debug UART on RK3288 */ 156 #include <asm/arch/grf_rk3288.h> 157 /* Enable early UART on the RK3288 */ 158 #define GRF_BASE 0xff770000 159 struct rk3288_grf * const grf = (void *)GRF_BASE; 160 161 rk_clrsetreg(&grf->gpio7ch_iomux, GPIO7C7_MASK << GPIO7C7_SHIFT | 162 GPIO7C6_MASK << GPIO7C6_SHIFT, 163 GPIO7C7_UART2DBG_SOUT << GPIO7C7_SHIFT | 164 GPIO7C6_UART2DBG_SIN << GPIO7C6_SHIFT); 165 /* 166 * Debug UART can be used from here if required: 167 * 168 * debug_uart_init(); 169 * printch('a'); 170 * printhex8(0x1234); 171 * printascii("string"); 172 */ 173 debug_uart_init(); 174 debug("\nspl:debug uart enabled in %s\n", __func__); 175 ret = spl_early_init(); 176 if (ret) { 177 debug("spl_early_init() failed: %d\n", ret); 178 hang(); 179 } 180 181 rockchip_timer_init(); 182 configure_l2ctlr(); 183 184 ret = rockchip_get_clk(&dev); 185 if (ret) { 186 debug("CLK init failed: %d\n", ret); 187 return; 188 } 189 190 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 191 if (ret) { 192 debug("Pinctrl init failed: %d\n", ret); 193 return; 194 } 195 196 #if !defined(CONFIG_SPL_OF_PLATDATA) 197 if (of_machine_is_compatible("phytec,rk3288-phycore-som")) { 198 ret = phycore_init(); 199 if (ret) { 200 debug("Failed to set up phycore power settings: %d\n", 201 ret); 202 return; 203 } 204 } 205 #endif 206 207 #if !defined(CONFIG_SUPPORT_TPL) 208 debug("\nspl:init dram\n"); 209 ret = uclass_get_device(UCLASS_RAM, 0, &dev); 210 if (ret) { 211 debug("DRAM init failed: %d\n", ret); 212 return; 213 } 214 #endif 215 216 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT) 217 back_to_bootrom(); 218 #endif 219 } 220 221 static int setup_led(void) 222 { 223 #ifdef CONFIG_SPL_LED 224 struct udevice *dev; 225 char *led_name; 226 int ret; 227 228 led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led"); 229 if (!led_name) 230 return 0; 231 ret = led_get_by_label(led_name, &dev); 232 if (ret) { 233 debug("%s: get=%d\n", __func__, ret); 234 return ret; 235 } 236 ret = led_set_on(dev, 1); 237 if (ret) 238 return ret; 239 #endif 240 241 return 0; 242 } 243 244 void spl_board_init(void) 245 { 246 struct udevice *pinctrl; 247 int ret; 248 249 ret = setup_led(); 250 251 if (ret) { 252 debug("LED ret=%d\n", ret); 253 hang(); 254 } 255 256 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 257 if (ret) { 258 debug("%s: Cannot find pinctrl device\n", __func__); 259 goto err; 260 } 261 262 #ifdef CONFIG_SPL_MMC_SUPPORT 263 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD); 264 if (ret) { 265 debug("%s: Failed to set up SD card\n", __func__); 266 goto err; 267 } 268 ret = configure_emmc(pinctrl); 269 if (ret) { 270 debug("%s: Failed to set up eMMC\n", __func__); 271 goto err; 272 } 273 #endif 274 275 /* Enable debug UART */ 276 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); 277 if (ret) { 278 debug("%s: Failed to set up console UART\n", __func__); 279 goto err; 280 } 281 282 preloader_console_init(); 283 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) 284 back_to_bootrom(); 285 #endif 286 return; 287 err: 288 printf("spl_board_init: Error %d\n", ret); 289 290 /* No way to report error here */ 291 hang(); 292 } 293