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