3 * Texas Instruments, <www.ti.com>
5 * Aneesh V <aneesh@ti.com>
7 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/u-boot.h>
18 #include <linux/compiler.h>
20 DECLARE_GLOBAL_DATA_PTR;
22 #ifndef CONFIG_SYS_UBOOT_START
23 #define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
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)
30 u32 *boot_params_ptr = NULL;
31 struct spl_image_info spl_image;
33 /* Define board data structure */
34 static bd_t bdata __attribute__ ((section(".data")));
37 * Default function to determine if u-boot or the OS should
38 * be started. This implementation always returns 1.
40 * Please implement your own board specific funcion to do this.
43 * 0 to not start u-boot
44 * positive if u-boot should start
46 #ifdef CONFIG_SPL_OS_BOOT
47 __weak int spl_start_uboot(void)
49 puts("SPL: Please implement spl_start_uboot() for your board\n");
50 puts("SPL: Direct Linux boot not active!\n");
56 * Weak default function for board specific cleanup/preparation before
57 * Linux boot. Some boards/platforms might not need it, so just provide
60 __weak void spl_board_prepare_for_linux(void)
65 void spl_set_header_raw_uboot(void)
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";
74 void spl_parse_image_header(const struct image_header *header)
76 u32 header_size = sizeof(struct image_header);
78 if (image_get_magic(header) == IH_MAGIC) {
79 if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) {
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.
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);
89 spl_image.entry_point = image_get_load(header);
90 /* Load including the header */
91 spl_image.load_addr = spl_image.entry_point -
93 spl_image.size = image_get_data_size(header) +
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);
102 /* Signature not found - assume u-boot.bin */
103 debug("mkimage signature not found - ih_magic = %x\n",
105 spl_set_header_raw_uboot();
109 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
111 typedef void __noreturn (*image_entry_noargs_t)(void);
113 image_entry_noargs_t image_entry =
114 (image_entry_noargs_t) spl_image->entry_point;
116 debug("image entry point: 0x%X\n", spl_image->entry_point);
120 #ifdef CONFIG_SPL_RAM_DEVICE
121 static void spl_ram_load_image(void)
123 const struct image_header *header;
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.
130 header = (struct image_header *)
131 (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
133 spl_parse_image_header(header);
137 void board_init_r(gd_t *dummy1, ulong dummy2)
140 debug(">>spl:board_init_r()\n");
142 #ifdef CONFIG_SYS_SPL_MALLOC_START
143 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
144 CONFIG_SYS_SPL_MALLOC_SIZE);
149 * timer_init() does not exist on PPC systems. The timer is initialized
150 * and enabled (decrementer) in interrupt_init() here.
155 #ifdef CONFIG_SPL_BOARD_INIT
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();
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();
174 #ifdef CONFIG_SPL_NAND_SUPPORT
175 case BOOT_DEVICE_NAND:
176 spl_nand_load_image();
179 #ifdef CONFIG_SPL_ONENAND_SUPPORT
180 case BOOT_DEVICE_ONENAND:
181 spl_onenand_load_image();
184 #ifdef CONFIG_SPL_NOR_SUPPORT
185 case BOOT_DEVICE_NOR:
186 spl_nor_load_image();
189 #ifdef CONFIG_SPL_YMODEM_SUPPORT
190 case BOOT_DEVICE_UART:
191 spl_ymodem_load_image();
194 #ifdef CONFIG_SPL_SPI_SUPPORT
195 case BOOT_DEVICE_SPI:
196 spl_spi_load_image();
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);
204 spl_net_load_image(NULL);
208 #ifdef CONFIG_SPL_USBETH_SUPPORT
209 case BOOT_DEVICE_USBETH:
210 spl_net_load_image("usb_ether");
213 #ifdef CONFIG_SPL_USB_SUPPORT
214 case BOOT_DEVICE_USB:
215 spl_usb_load_image();
218 #ifdef CONFIG_SPL_SATA_SUPPORT
219 case BOOT_DEVICE_SATA:
220 spl_sata_load_image();
224 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
225 printf("SPL: Unsupported Boot Device %d\n", boot_device);
230 switch (spl_image.os) {
232 debug("Jumping to U-Boot\n");
234 #ifdef CONFIG_SPL_OS_BOOT
236 debug("Jumping to Linux\n");
237 spl_board_prepare_for_linux();
238 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
241 debug("Unsupported OS image.. Jumping nevertheless..\n");
243 jump_to_image_no_args(&spl_image);
247 * This requires UART clocks to be enabled. In order for this to work the
248 * caller must ensure that the gd pointer is valid.
250 void preloader_console_init(void)
253 gd->baudrate = CONFIG_BAUDRATE;
255 serial_init(); /* serial communications setup */
257 gd->have_console = 1;
259 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
261 #ifdef CONFIG_SPL_DISPLAY_PRINT