1 /* 2 * (C) Copyright 2010 3 * Texas Instruments, <www.ti.com> 4 * 5 * Aneesh V <aneesh@ti.com> 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 #include <common.h> 10 #include <dm.h> 11 #include <spl.h> 12 #include <asm/u-boot.h> 13 #include <nand.h> 14 #include <fat.h> 15 #include <version.h> 16 #include <i2c.h> 17 #include <image.h> 18 #include <malloc.h> 19 #include <dm/root.h> 20 #include <linux/compiler.h> 21 22 DECLARE_GLOBAL_DATA_PTR; 23 24 #ifndef CONFIG_SYS_UBOOT_START 25 #define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE 26 #endif 27 #ifndef CONFIG_SYS_MONITOR_LEN 28 /* Unknown U-Boot size, let's assume it will not be more than 200 KB */ 29 #define CONFIG_SYS_MONITOR_LEN (200 * 1024) 30 #endif 31 32 u32 *boot_params_ptr = NULL; 33 struct spl_image_info spl_image; 34 35 /* Define board data structure */ 36 static bd_t bdata __attribute__ ((section(".data"))); 37 38 /* 39 * Default function to determine if u-boot or the OS should 40 * be started. This implementation always returns 1. 41 * 42 * Please implement your own board specific funcion to do this. 43 * 44 * RETURN 45 * 0 to not start u-boot 46 * positive if u-boot should start 47 */ 48 #ifdef CONFIG_SPL_OS_BOOT 49 __weak int spl_start_uboot(void) 50 { 51 puts("SPL: Please implement spl_start_uboot() for your board\n"); 52 puts("SPL: Direct Linux boot not active!\n"); 53 return 1; 54 } 55 #endif 56 57 /* 58 * Weak default function for board specific cleanup/preparation before 59 * Linux boot. Some boards/platforms might not need it, so just provide 60 * an empty stub here. 61 */ 62 __weak void spl_board_prepare_for_linux(void) 63 { 64 /* Nothing to do! */ 65 } 66 67 void spl_set_header_raw_uboot(void) 68 { 69 spl_image.size = CONFIG_SYS_MONITOR_LEN; 70 spl_image.entry_point = CONFIG_SYS_UBOOT_START; 71 spl_image.load_addr = CONFIG_SYS_TEXT_BASE; 72 spl_image.os = IH_OS_U_BOOT; 73 spl_image.name = "U-Boot"; 74 } 75 76 void spl_parse_image_header(const struct image_header *header) 77 { 78 u32 header_size = sizeof(struct image_header); 79 80 if (image_get_magic(header) == IH_MAGIC) { 81 if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) { 82 /* 83 * On some system (e.g. powerpc), the load-address and 84 * entry-point is located at address 0. We can't load 85 * to 0-0x40. So skip header in this case. 86 */ 87 spl_image.load_addr = image_get_load(header); 88 spl_image.entry_point = image_get_ep(header); 89 spl_image.size = image_get_data_size(header); 90 } else { 91 spl_image.entry_point = image_get_load(header); 92 /* Load including the header */ 93 spl_image.load_addr = spl_image.entry_point - 94 header_size; 95 spl_image.size = image_get_data_size(header) + 96 header_size; 97 } 98 spl_image.os = image_get_os(header); 99 spl_image.name = image_get_name(header); 100 debug("spl: payload image: %.*s load addr: 0x%x size: %d\n", 101 (int)sizeof(spl_image.name), spl_image.name, 102 spl_image.load_addr, spl_image.size); 103 } else { 104 /* Signature not found - assume u-boot.bin */ 105 debug("mkimage signature not found - ih_magic = %x\n", 106 header->ih_magic); 107 spl_set_header_raw_uboot(); 108 } 109 } 110 111 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) 112 { 113 typedef void __noreturn (*image_entry_noargs_t)(void); 114 115 image_entry_noargs_t image_entry = 116 (image_entry_noargs_t) spl_image->entry_point; 117 118 debug("image entry point: 0x%X\n", spl_image->entry_point); 119 image_entry(); 120 } 121 122 #ifdef CONFIG_SPL_RAM_DEVICE 123 static void spl_ram_load_image(void) 124 { 125 const struct image_header *header; 126 127 /* 128 * Get the header. It will point to an address defined by handoff 129 * which will tell where the image located inside the flash. For 130 * now, it will temporary fixed to address pointed by U-Boot. 131 */ 132 header = (struct image_header *) 133 (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header)); 134 135 spl_parse_image_header(header); 136 } 137 #endif 138 139 void board_init_r(gd_t *dummy1, ulong dummy2) 140 { 141 u32 boot_device; 142 debug(">>spl:board_init_r()\n"); 143 144 #if defined(CONFIG_SYS_SPL_MALLOC_START) 145 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START, 146 CONFIG_SYS_SPL_MALLOC_SIZE); 147 gd->flags |= GD_FLG_FULL_MALLOC_INIT; 148 #elif defined(CONFIG_SYS_MALLOC_F_LEN) 149 gd->malloc_limit = gd->malloc_base + CONFIG_SYS_MALLOC_F_LEN; 150 gd->malloc_ptr = 0; 151 #endif 152 #ifdef CONFIG_SPL_DM 153 dm_init_and_scan(true); 154 #endif 155 156 #ifndef CONFIG_PPC 157 /* 158 * timer_init() does not exist on PPC systems. The timer is initialized 159 * and enabled (decrementer) in interrupt_init() here. 160 */ 161 timer_init(); 162 #endif 163 164 #ifdef CONFIG_SPL_BOARD_INIT 165 spl_board_init(); 166 #endif 167 168 boot_device = spl_boot_device(); 169 debug("boot device - %d\n", boot_device); 170 switch (boot_device) { 171 #ifdef CONFIG_SPL_RAM_DEVICE 172 case BOOT_DEVICE_RAM: 173 spl_ram_load_image(); 174 break; 175 #endif 176 #ifdef CONFIG_SPL_MMC_SUPPORT 177 case BOOT_DEVICE_MMC1: 178 case BOOT_DEVICE_MMC2: 179 case BOOT_DEVICE_MMC2_2: 180 spl_mmc_load_image(); 181 break; 182 #endif 183 #ifdef CONFIG_SPL_NAND_SUPPORT 184 case BOOT_DEVICE_NAND: 185 spl_nand_load_image(); 186 break; 187 #endif 188 #ifdef CONFIG_SPL_ONENAND_SUPPORT 189 case BOOT_DEVICE_ONENAND: 190 spl_onenand_load_image(); 191 break; 192 #endif 193 #ifdef CONFIG_SPL_NOR_SUPPORT 194 case BOOT_DEVICE_NOR: 195 spl_nor_load_image(); 196 break; 197 #endif 198 #ifdef CONFIG_SPL_YMODEM_SUPPORT 199 case BOOT_DEVICE_UART: 200 spl_ymodem_load_image(); 201 break; 202 #endif 203 #ifdef CONFIG_SPL_SPI_SUPPORT 204 case BOOT_DEVICE_SPI: 205 spl_spi_load_image(); 206 break; 207 #endif 208 #ifdef CONFIG_SPL_ETH_SUPPORT 209 case BOOT_DEVICE_CPGMAC: 210 #ifdef CONFIG_SPL_ETH_DEVICE 211 spl_net_load_image(CONFIG_SPL_ETH_DEVICE); 212 #else 213 spl_net_load_image(NULL); 214 #endif 215 break; 216 #endif 217 #ifdef CONFIG_SPL_USBETH_SUPPORT 218 case BOOT_DEVICE_USBETH: 219 spl_net_load_image("usb_ether"); 220 break; 221 #endif 222 #ifdef CONFIG_SPL_USB_SUPPORT 223 case BOOT_DEVICE_USB: 224 spl_usb_load_image(); 225 break; 226 #endif 227 #ifdef CONFIG_SPL_SATA_SUPPORT 228 case BOOT_DEVICE_SATA: 229 spl_sata_load_image(); 230 break; 231 #endif 232 default: 233 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 234 printf("SPL: Unsupported Boot Device %d\n", boot_device); 235 #endif 236 hang(); 237 } 238 239 switch (spl_image.os) { 240 case IH_OS_U_BOOT: 241 debug("Jumping to U-Boot\n"); 242 break; 243 #ifdef CONFIG_SPL_OS_BOOT 244 case IH_OS_LINUX: 245 debug("Jumping to Linux\n"); 246 spl_board_prepare_for_linux(); 247 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR); 248 #endif 249 default: 250 debug("Unsupported OS image.. Jumping nevertheless..\n"); 251 } 252 #if defined(CONFIG_SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE) 253 debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr, 254 gd->malloc_ptr / 1024); 255 #endif 256 257 jump_to_image_no_args(&spl_image); 258 } 259 260 /* 261 * This requires UART clocks to be enabled. In order for this to work the 262 * caller must ensure that the gd pointer is valid. 263 */ 264 void preloader_console_init(void) 265 { 266 gd->bd = &bdata; 267 gd->baudrate = CONFIG_BAUDRATE; 268 269 serial_init(); /* serial communications setup */ 270 271 gd->have_console = 1; 272 273 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \ 274 U_BOOT_TIME ")\n"); 275 #ifdef CONFIG_SPL_DISPLAY_PRINT 276 spl_display_print(); 277 #endif 278 } 279