3 * Texas Instruments, <www.ti.com>
5 * Aneesh V <aneesh@ti.com>
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/u-boot.h>
34 #include <linux/compiler.h>
36 DECLARE_GLOBAL_DATA_PTR;
38 u32 *boot_params_ptr = NULL;
39 struct spl_image_info spl_image;
41 /* Define board data structure */
42 static bd_t bdata __attribute__ ((section(".data")));
44 inline void hang(void)
46 puts("### ERROR ### Please RESET the board ###\n");
52 * Default function to determine if u-boot or the OS should
53 * be started. This implementation always returns 1.
55 * Please implement your own board specific funcion to do this.
58 * 0 to not start u-boot
59 * positive if u-boot should start
61 #ifdef CONFIG_SPL_OS_BOOT
62 __weak int spl_start_uboot(void)
64 puts("SPL: Please implement spl_start_uboot() for your board\n");
65 puts("SPL: Direct Linux boot not active!\n");
70 void spl_parse_image_header(const struct image_header *header)
72 u32 header_size = sizeof(struct image_header);
74 if (__be32_to_cpu(header->ih_magic) == IH_MAGIC) {
75 spl_image.size = __be32_to_cpu(header->ih_size) + header_size;
76 spl_image.entry_point = __be32_to_cpu(header->ih_load);
77 /* Load including the header */
78 spl_image.load_addr = spl_image.entry_point - header_size;
79 spl_image.os = header->ih_os;
80 spl_image.name = (const char *)&header->ih_name;
81 debug("spl: payload image: %s load addr: 0x%x size: %d\n",
82 spl_image.name, spl_image.load_addr, spl_image.size);
84 /* Signature not found - assume u-boot.bin */
85 puts("mkimage signature not found, assuming u-boot.bin ..\n");
86 debug("mkimage signature not found - ih_magic = %x\n",
88 /* Let's assume U-Boot will not be more than 200 KB */
89 spl_image.size = 200 * 1024;
90 spl_image.entry_point = CONFIG_SYS_TEXT_BASE;
91 spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
92 spl_image.os = IH_OS_U_BOOT;
93 spl_image.name = "U-Boot";
97 static void __noreturn jump_to_image_no_args(void)
99 typedef void __noreturn (*image_entry_noargs_t)(u32 *);
100 image_entry_noargs_t image_entry =
101 (image_entry_noargs_t) spl_image.entry_point;
103 debug("image entry point: 0x%X\n", spl_image.entry_point);
104 /* Pass the saved boot_params from rom code */
105 #if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU)
106 image_entry = (image_entry_noargs_t)0x80100000;
108 u32 boot_params_ptr_addr = (u32)&boot_params_ptr;
109 image_entry((u32 *)boot_params_ptr_addr);
112 void board_init_r(gd_t *dummy1, ulong dummy2)
115 debug(">>spl:board_init_r()\n");
117 #ifdef CONFIG_SYS_SPL_MALLOC_START
118 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
119 CONFIG_SYS_SPL_MALLOC_SIZE);
122 #ifdef CONFIG_SPL_BOARD_INIT
126 boot_device = spl_boot_device();
127 debug("boot device - %d\n", boot_device);
128 switch (boot_device) {
129 #ifdef CONFIG_SPL_MMC_SUPPORT
130 case BOOT_DEVICE_MMC1:
131 case BOOT_DEVICE_MMC2:
132 case BOOT_DEVICE_MMC2_2:
133 spl_mmc_load_image();
136 #ifdef CONFIG_SPL_NAND_SUPPORT
137 case BOOT_DEVICE_NAND:
138 spl_nand_load_image();
141 #ifdef CONFIG_SPL_YMODEM_SUPPORT
142 case BOOT_DEVICE_UART:
143 spl_ymodem_load_image();
146 #ifdef CONFIG_SPL_SPI_SUPPORT
147 case BOOT_DEVICE_SPI:
152 puts("SPL: Un-supported Boot Device\n");
153 debug("Found: %d\n", boot_device);
158 switch (spl_image.os) {
160 debug("Jumping to U-Boot\n");
161 jump_to_image_no_args();
163 #ifdef CONFIG_SPL_OS_BOOT
165 debug("Jumping to Linux\n");
166 spl_board_prepare_for_linux();
167 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
171 puts("Unsupported OS image.. Jumping nevertheless..\n");
172 jump_to_image_no_args();
177 * This requires UART clocks to be enabled. In order for this to work the
178 * caller must ensure that the gd pointer is valid.
180 void preloader_console_init(void)
183 gd->flags |= GD_FLG_RELOC;
184 gd->baudrate = CONFIG_BAUDRATE;
186 serial_init(); /* serial communications setup */
188 gd->have_console = 1;
190 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
192 #ifdef CONFIG_SPL_DISPLAY_PRINT