3 * Texas Instruments, <www.ti.com>
5 * Aneesh V <aneesh@ti.com>
7 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/u-boot.h>
20 #include <linux/compiler.h>
22 DECLARE_GLOBAL_DATA_PTR;
24 #ifndef CONFIG_SYS_UBOOT_START
25 #define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
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)
32 u32 *boot_params_ptr = NULL;
33 struct spl_image_info spl_image;
35 /* Define board data structure */
36 static bd_t bdata __attribute__ ((section(".data")));
39 * Default function to determine if u-boot or the OS should
40 * be started. This implementation always returns 1.
42 * Please implement your own board specific funcion to do this.
45 * 0 to not start u-boot
46 * positive if u-boot should start
48 #ifdef CONFIG_SPL_OS_BOOT
49 __weak int spl_start_uboot(void)
51 puts("SPL: Please implement spl_start_uboot() for your board\n");
52 puts("SPL: Direct Linux boot not active!\n");
58 * Weak default function for board specific cleanup/preparation before
59 * Linux boot. Some boards/platforms might not need it, so just provide
62 __weak void spl_board_prepare_for_linux(void)
67 void spl_set_header_raw_uboot(void)
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";
76 void spl_parse_image_header(const struct image_header *header)
78 u32 header_size = sizeof(struct image_header);
80 if (image_get_magic(header) == IH_MAGIC) {
81 if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) {
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.
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);
91 spl_image.entry_point = image_get_load(header);
92 /* Load including the header */
93 spl_image.load_addr = spl_image.entry_point -
95 spl_image.size = image_get_data_size(header) +
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);
104 /* Signature not found - assume u-boot.bin */
105 debug("mkimage signature not found - ih_magic = %x\n",
107 spl_set_header_raw_uboot();
111 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
113 typedef void __noreturn (*image_entry_noargs_t)(void);
115 image_entry_noargs_t image_entry =
116 (image_entry_noargs_t) spl_image->entry_point;
118 debug("image entry point: 0x%X\n", spl_image->entry_point);
122 #ifdef CONFIG_SPL_RAM_DEVICE
123 static void spl_ram_load_image(void)
125 const struct image_header *header;
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.
132 header = (struct image_header *)
133 (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
135 spl_parse_image_header(header);
139 void board_init_r(gd_t *dummy1, ulong dummy2)
142 debug(">>spl:board_init_r()\n");
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;
153 dm_init_and_scan(true);
158 * timer_init() does not exist on PPC systems. The timer is initialized
159 * and enabled (decrementer) in interrupt_init() here.
164 #ifdef CONFIG_SPL_BOARD_INIT
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();
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();
183 #ifdef CONFIG_SPL_NAND_SUPPORT
184 case BOOT_DEVICE_NAND:
185 if (spl_nand_load_image() == 0)
187 /* fallthru in case of failure to activate ymodem download */
189 #ifdef CONFIG_SPL_ONENAND_SUPPORT
190 case BOOT_DEVICE_ONENAND:
191 spl_onenand_load_image();
194 #ifdef CONFIG_SPL_NOR_SUPPORT
195 case BOOT_DEVICE_NOR:
196 spl_nor_load_image();
199 #ifdef CONFIG_SPL_YMODEM_SUPPORT
200 case BOOT_DEVICE_UART:
201 spl_ymodem_load_image();
204 #ifdef CONFIG_SPL_SPI_SUPPORT
205 case BOOT_DEVICE_SPI:
206 spl_spi_load_image();
209 #ifdef CONFIG_SPL_ETH_SUPPORT
210 case BOOT_DEVICE_CPGMAC:
211 #ifdef CONFIG_SPL_ETH_DEVICE
212 spl_net_load_image(CONFIG_SPL_ETH_DEVICE);
214 spl_net_load_image(NULL);
218 #ifdef CONFIG_SPL_USBETH_SUPPORT
219 case BOOT_DEVICE_USBETH:
220 spl_net_load_image("usb_ether");
223 #ifdef CONFIG_SPL_USB_SUPPORT
224 case BOOT_DEVICE_USB:
225 spl_usb_load_image();
228 #ifdef CONFIG_SPL_SATA_SUPPORT
229 case BOOT_DEVICE_SATA:
230 spl_sata_load_image();
234 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
235 printf("SPL: Unsupported Boot Device %d\n", boot_device);
240 switch (spl_image.os) {
242 debug("Jumping to U-Boot\n");
244 #ifdef CONFIG_SPL_OS_BOOT
246 debug("Jumping to Linux\n");
247 spl_board_prepare_for_linux();
248 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
251 debug("Unsupported OS image.. Jumping nevertheless..\n");
253 #if defined(CONFIG_SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
254 debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
255 gd->malloc_ptr / 1024);
258 jump_to_image_no_args(&spl_image);
262 * This requires UART clocks to be enabled. In order for this to work the
263 * caller must ensure that the gd pointer is valid.
265 void preloader_console_init(void)
268 gd->baudrate = CONFIG_BAUDRATE;
270 serial_init(); /* serial communications setup */
272 gd->have_console = 1;
274 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
276 #ifdef CONFIG_SPL_DISPLAY_PRINT