1 /* 2 * (C) Copyright 2018 Rockchip Electronics Co., Ltd 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 <ram.h> 11 #include <spl.h> 12 #include <asm/arch/bootrom.h> 13 #include <asm/arch/sdram_common.h> 14 #include <asm/arch-rockchip/sys_proto.h> 15 #include <asm/io.h> 16 17 DECLARE_GLOBAL_DATA_PTR; 18 19 void board_return_to_bootrom(void) 20 { 21 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 22 } 23 24 __weak const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = { 25 }; 26 27 const char *board_spl_was_booted_from(void) 28 { 29 u32 bootdevice_brom_id = readl(BROM_BOOTSOURCE_ID_ADDR); 30 const char *bootdevice_ofpath = NULL; 31 32 if (bootdevice_brom_id < ARRAY_SIZE(boot_devices)) 33 bootdevice_ofpath = boot_devices[bootdevice_brom_id]; 34 35 if (bootdevice_ofpath) 36 debug("%s: brom_bootdevice_id %x maps to '%s'\n", 37 __func__, bootdevice_brom_id, bootdevice_ofpath); 38 else 39 debug("%s: failed to resolve brom_bootdevice_id %x\n", 40 __func__, bootdevice_brom_id); 41 42 return bootdevice_ofpath; 43 } 44 45 u32 spl_boot_device(void) 46 { 47 u32 boot_device = BOOT_DEVICE_MMC1; 48 49 #if defined(CONFIG_TARGET_CHROMEBOOK_JERRY) || \ 50 defined(CONFIG_TARGET_CHROMEBIT_MICKEY) || \ 51 defined(CONFIG_TARGET_CHROMEBOOK_MINNIE) 52 return BOOT_DEVICE_SPI; 53 #endif 54 if (CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)) 55 return BOOT_DEVICE_BOOTROM; 56 57 return boot_device; 58 } 59 60 u32 spl_boot_mode(const u32 boot_device) 61 { 62 return MMCSD_MODE_RAW; 63 } 64 65 __weak void rockchip_stimer_init(void) 66 { 67 #ifdef CONFIG_SYS_ARCH_TIMER 68 #ifndef CONFIG_ARM64 69 asm volatile("mcr p15, 0, %0, c14, c0, 0" 70 : : "r"(COUNTER_FREQUENCY)); 71 #endif 72 writel(0, CONFIG_ROCKCHIP_STIMER_BASE + 0x10); 73 writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE); 74 writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + 4); 75 writel(1, CONFIG_ROCKCHIP_STIMER_BASE + 0x10); 76 #endif 77 } 78 79 __weak int arch_cpu_init(void) 80 { 81 return 0; 82 } 83 84 __weak int rk_board_init_f(void) 85 { 86 return 0; 87 } 88 89 #ifndef CONFIG_SPL_LIBGENERIC_SUPPORT 90 void udelay(unsigned long usec) 91 { 92 __udelay(usec); 93 } 94 95 void hang(void) 96 { 97 bootstage_error(BOOTSTAGE_ID_NEED_RESET); 98 for (;;) 99 ; 100 } 101 102 /** 103 * memset - Fill a region of memory with the given value 104 * @s: Pointer to the start of the area. 105 * @c: The byte to fill the area with 106 * @count: The size of the area. 107 * 108 * Do not use memset() to access IO space, use memset_io() instead. 109 */ 110 void *memset(void *s, int c, size_t count) 111 { 112 unsigned long *sl = (unsigned long *)s; 113 char *s8; 114 115 #if !CONFIG_IS_ENABLED(TINY_MEMSET) 116 unsigned long cl = 0; 117 int i; 118 119 /* do it one word at a time (32 bits or 64 bits) while possible */ 120 if (((ulong)s & (sizeof(*sl) - 1)) == 0) { 121 for (i = 0; i < sizeof(*sl); i++) { 122 cl <<= 8; 123 cl |= c & 0xff; 124 } 125 while (count >= sizeof(*sl)) { 126 *sl++ = cl; 127 count -= sizeof(*sl); 128 } 129 } 130 #endif /* fill 8 bits at a time */ 131 s8 = (char *)sl; 132 while (count--) 133 *s8++ = c; 134 135 return s; 136 } 137 #endif 138 139 void board_init_f(ulong dummy) 140 { 141 #ifdef CONFIG_SPL_FRAMEWORK 142 int ret; 143 #if !defined(CONFIG_SUPPORT_TPL) 144 struct udevice *dev; 145 #endif 146 #endif 147 148 #if !defined(CONFIG_SUPPORT_TPL) 149 rockchip_stimer_init(); 150 arch_cpu_init(); 151 #endif 152 #define EARLY_UART 153 #if defined(EARLY_UART) && defined(CONFIG_DEBUG_UART) 154 /* 155 * Debug UART can be used from here if required: 156 * 157 * debug_uart_init(); 158 * printch('a'); 159 * printhex8(0x1234); 160 * printascii("string"); 161 */ 162 debug_uart_init(); 163 printascii("U-Boot SPL board init"); 164 #endif 165 166 #ifdef CONFIG_SPL_FRAMEWORK 167 ret = spl_early_init(); 168 if (ret) { 169 printf("spl_early_init() failed: %d\n", ret); 170 hang(); 171 } 172 #if !defined(CONFIG_SUPPORT_TPL) 173 debug("\nspl:init dram\n"); 174 ret = uclass_get_device(UCLASS_RAM, 0, &dev); 175 if (ret) { 176 printf("DRAM init failed: %d\n", ret); 177 return; 178 } 179 #endif 180 preloader_console_init(); 181 #else 182 /* Some SoCs like rk3036 does not use any frame work */ 183 sdram_init(); 184 #endif 185 186 rk_board_init_f(); 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 } 192 193 #ifdef CONFIG_SPL_LOAD_FIT 194 int board_fit_config_name_match(const char *name) 195 { 196 /* Just empty function now - can't decide what to choose */ 197 debug("%s: %s\n", __func__, name); 198 199 return 0; 200 } 201 #endif 202 203 #ifdef CONFIG_SPL_BOARD_INIT 204 __weak int rk_spl_board_init(void) 205 { 206 return 0; 207 } 208 209 static int setup_led(void) 210 { 211 #ifdef CONFIG_SPL_LED 212 struct udevice *dev; 213 char *led_name; 214 int ret; 215 216 led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led"); 217 if (!led_name) 218 return 0; 219 ret = led_get_by_label(led_name, &dev); 220 if (ret) { 221 debug("%s: get=%d\n", __func__, ret); 222 return ret; 223 } 224 ret = led_set_on(dev, 1); 225 if (ret) 226 return ret; 227 #endif 228 229 return 0; 230 } 231 232 void spl_board_init(void) 233 { 234 int ret; 235 236 ret = setup_led(); 237 238 if (ret) { 239 debug("LED ret=%d\n", ret); 240 hang(); 241 } 242 243 rk_spl_board_init(); 244 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) 245 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 246 #endif 247 return; 248 } 249 #endif 250