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 struct rk3188_pmu *pmu; 105 int ret; 106 107 /* Example code showing how to enable the debug UART on RK3188 */ 108 #ifdef EARLY_UART 109 #include <asm/arch/grf_rk3188.h> 110 /* Enable early UART on the RK3188 */ 111 #define GRF_BASE 0x20008000 112 struct rk3188_grf * const grf = (void *)GRF_BASE; 113 114 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 * Debug UART can be used from here if required: 121 * 122 * debug_uart_init(); 123 * printch('a'); 124 * printhex8(0x1234); 125 * printascii("string"); 126 */ 127 debug_uart_init(); 128 printch('s'); 129 printch('p'); 130 printch('l'); 131 printch('\n'); 132 #endif 133 134 ret = spl_early_init(); 135 if (ret) { 136 debug("spl_early_init() failed: %d\n", ret); 137 hang(); 138 } 139 140 rockchip_timer_init(); 141 142 ret = rockchip_get_clk(&dev); 143 if (ret) { 144 debug("CLK init failed: %d\n", ret); 145 return; 146 } 147 148 /* 149 * Recover the bootrom's stackpointer. 150 * For whatever reason needs to run after rockchip_get_clk. 151 */ 152 pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU); 153 if (IS_ERR(pmu)) 154 error("pmu syscon returned %ld\n", PTR_ERR(pmu)); 155 SAVE_SP_ADDR = readl(&pmu->sys_reg[2]); 156 157 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 158 if (ret) { 159 debug("Pinctrl init failed: %d\n", ret); 160 return; 161 } 162 163 ret = uclass_get_device(UCLASS_RAM, 0, &dev); 164 if (ret) { 165 debug("DRAM init failed: %d\n", ret); 166 return; 167 } 168 169 setup_arm_clock(); 170 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT) 171 back_to_bootrom(); 172 #endif 173 } 174 175 static int setup_led(void) 176 { 177 #ifdef CONFIG_SPL_LED 178 struct udevice *dev; 179 char *led_name; 180 int ret; 181 182 led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led"); 183 if (!led_name) 184 return 0; 185 ret = led_get_by_label(led_name, &dev); 186 if (ret) { 187 debug("%s: get=%d\n", __func__, ret); 188 return ret; 189 } 190 ret = led_set_on(dev, 1); 191 if (ret) 192 return ret; 193 #endif 194 195 return 0; 196 } 197 198 void spl_board_init(void) 199 { 200 struct udevice *pinctrl; 201 int ret; 202 203 ret = setup_led(); 204 if (ret) { 205 debug("LED ret=%d\n", ret); 206 hang(); 207 } 208 209 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 210 if (ret) { 211 debug("%s: Cannot find pinctrl device\n", __func__); 212 goto err; 213 } 214 215 #ifdef CONFIG_SPL_MMC_SUPPORT 216 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD); 217 if (ret) { 218 debug("%s: Failed to set up SD card\n", __func__); 219 goto err; 220 } 221 #endif 222 223 /* Enable debug UART */ 224 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); 225 if (ret) { 226 debug("%s: Failed to set up console UART\n", __func__); 227 goto err; 228 } 229 230 preloader_console_init(); 231 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) 232 back_to_bootrom(); 233 #endif 234 return; 235 236 err: 237 printf("spl_board_init: Error %d\n", ret); 238 239 /* No way to report error here */ 240 hang(); 241 } 242