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_parse_image_header(const struct image_header *header) 66 { 67 u32 header_size = sizeof(struct image_header); 68 69 if (image_get_magic(header) == IH_MAGIC) { 70 if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) { 71 /* 72 * On some system (e.g. powerpc), the load-address and 73 * entry-point is located at address 0. We can't load 74 * to 0-0x40. So skip header in this case. 75 */ 76 spl_image.load_addr = image_get_load(header); 77 spl_image.entry_point = image_get_ep(header); 78 spl_image.size = image_get_data_size(header); 79 } else { 80 spl_image.entry_point = image_get_load(header); 81 /* Load including the header */ 82 spl_image.load_addr = spl_image.entry_point - 83 header_size; 84 spl_image.size = image_get_data_size(header) + 85 header_size; 86 } 87 spl_image.os = image_get_os(header); 88 spl_image.name = image_get_name(header); 89 debug("spl: payload image: %.*s load addr: 0x%x size: %d\n", 90 (int)sizeof(spl_image.name), spl_image.name, 91 spl_image.load_addr, spl_image.size); 92 } else { 93 /* Signature not found - assume u-boot.bin */ 94 debug("mkimage signature not found - ih_magic = %x\n", 95 header->ih_magic); 96 spl_image.size = CONFIG_SYS_MONITOR_LEN; 97 spl_image.entry_point = CONFIG_SYS_UBOOT_START; 98 spl_image.load_addr = CONFIG_SYS_TEXT_BASE; 99 spl_image.os = IH_OS_U_BOOT; 100 spl_image.name = "U-Boot"; 101 } 102 } 103 104 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) 105 { 106 typedef void __noreturn (*image_entry_noargs_t)(void); 107 108 image_entry_noargs_t image_entry = 109 (image_entry_noargs_t) spl_image->entry_point; 110 111 debug("image entry point: 0x%X\n", spl_image->entry_point); 112 image_entry(); 113 } 114 115 #ifdef CONFIG_SPL_RAM_DEVICE 116 static void spl_ram_load_image(void) 117 { 118 const struct image_header *header; 119 120 /* 121 * Get the header. It will point to an address defined by handoff 122 * which will tell where the image located inside the flash. For 123 * now, it will temporary fixed to address pointed by U-Boot. 124 */ 125 header = (struct image_header *) 126 (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header)); 127 128 spl_parse_image_header(header); 129 } 130 #endif 131 132 void board_init_r(gd_t *dummy1, ulong dummy2) 133 { 134 u32 boot_device; 135 debug(">>spl:board_init_r()\n"); 136 137 #ifdef CONFIG_SYS_SPL_MALLOC_START 138 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START, 139 CONFIG_SYS_SPL_MALLOC_SIZE); 140 #endif 141 142 #ifndef CONFIG_PPC 143 /* 144 * timer_init() does not exist on PPC systems. The timer is initialized 145 * and enabled (decrementer) in interrupt_init() here. 146 */ 147 timer_init(); 148 #endif 149 150 #ifdef CONFIG_SPL_BOARD_INIT 151 spl_board_init(); 152 #endif 153 154 boot_device = spl_boot_device(); 155 debug("boot device - %d\n", boot_device); 156 switch (boot_device) { 157 #ifdef CONFIG_SPL_RAM_DEVICE 158 case BOOT_DEVICE_RAM: 159 spl_ram_load_image(); 160 break; 161 #endif 162 #ifdef CONFIG_SPL_MMC_SUPPORT 163 case BOOT_DEVICE_MMC1: 164 case BOOT_DEVICE_MMC2: 165 case BOOT_DEVICE_MMC2_2: 166 spl_mmc_load_image(); 167 break; 168 #endif 169 #ifdef CONFIG_SPL_NAND_SUPPORT 170 case BOOT_DEVICE_NAND: 171 spl_nand_load_image(); 172 break; 173 #endif 174 #ifdef CONFIG_SPL_ONENAND_SUPPORT 175 case BOOT_DEVICE_ONENAND: 176 spl_onenand_load_image(); 177 break; 178 #endif 179 #ifdef CONFIG_SPL_NOR_SUPPORT 180 case BOOT_DEVICE_NOR: 181 spl_nor_load_image(); 182 break; 183 #endif 184 #ifdef CONFIG_SPL_YMODEM_SUPPORT 185 case BOOT_DEVICE_UART: 186 spl_ymodem_load_image(); 187 break; 188 #endif 189 #ifdef CONFIG_SPL_SPI_SUPPORT 190 case BOOT_DEVICE_SPI: 191 spl_spi_load_image(); 192 break; 193 #endif 194 #ifdef CONFIG_SPL_ETH_SUPPORT 195 case BOOT_DEVICE_CPGMAC: 196 #ifdef CONFIG_SPL_ETH_DEVICE 197 spl_net_load_image(CONFIG_SPL_ETH_DEVICE); 198 #else 199 spl_net_load_image(NULL); 200 #endif 201 break; 202 #endif 203 #ifdef CONFIG_SPL_USBETH_SUPPORT 204 case BOOT_DEVICE_USBETH: 205 spl_net_load_image("usb_ether"); 206 break; 207 #endif 208 #ifdef CONFIG_SPL_USB_SUPPORT 209 case BOOT_DEVICE_USB: 210 spl_usb_load_image(); 211 break; 212 #endif 213 #ifdef CONFIG_SPL_SATA_SUPPORT 214 case BOOT_DEVICE_SATA: 215 spl_sata_load_image(); 216 break; 217 #endif 218 default: 219 debug("SPL: Un-supported Boot Device\n"); 220 hang(); 221 } 222 223 switch (spl_image.os) { 224 case IH_OS_U_BOOT: 225 debug("Jumping to U-Boot\n"); 226 break; 227 #ifdef CONFIG_SPL_OS_BOOT 228 case IH_OS_LINUX: 229 debug("Jumping to Linux\n"); 230 spl_board_prepare_for_linux(); 231 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR); 232 #endif 233 default: 234 debug("Unsupported OS image.. Jumping nevertheless..\n"); 235 } 236 jump_to_image_no_args(&spl_image); 237 } 238 239 /* 240 * This requires UART clocks to be enabled. In order for this to work the 241 * caller must ensure that the gd pointer is valid. 242 */ 243 void preloader_console_init(void) 244 { 245 gd->bd = &bdata; 246 gd->baudrate = CONFIG_BAUDRATE; 247 248 serial_init(); /* serial communications setup */ 249 250 gd->have_console = 1; 251 252 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \ 253 U_BOOT_TIME ")\n"); 254 #ifdef CONFIG_SPL_DISPLAY_PRINT 255 spl_display_print(); 256 #endif 257 } 258