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 #ifndef CONFIG_SYS_MONITOR_LEN
39 #define CONFIG_SYS_MONITOR_LEN (200 * 1024)
42 u32 *boot_params_ptr = NULL;
43 struct spl_image_info spl_image;
45 /* Define board data structure */
46 static bd_t bdata __attribute__ ((section(".data")));
48 inline void hang(void)
50 puts("### ERROR ### Please RESET the board ###\n");
56 * Default function to determine if u-boot or the OS should
57 * be started. This implementation always returns 1.
59 * Please implement your own board specific funcion to do this.
62 * 0 to not start u-boot
63 * positive if u-boot should start
65 #ifdef CONFIG_SPL_OS_BOOT
66 __weak int spl_start_uboot(void)
68 puts("SPL: Please implement spl_start_uboot() for your board\n");
69 puts("SPL: Direct Linux boot not active!\n");
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 spl_image.size = image_get_data_size(header) + header_size;
80 spl_image.entry_point = image_get_load(header);
81 /* Load including the header */
82 spl_image.load_addr = spl_image.entry_point - header_size;
83 spl_image.os = image_get_os(header);
84 spl_image.name = image_get_name(header);
85 debug("spl: payload image: %s load addr: 0x%x size: %d\n",
86 spl_image.name, spl_image.load_addr, spl_image.size);
88 /* Signature not found - assume u-boot.bin */
89 puts("mkimage signature not found, assuming u-boot.bin ..\n");
90 debug("mkimage signature not found - ih_magic = %x\n",
92 /* Let's assume U-Boot will not be more than 200 KB */
93 spl_image.size = CONFIG_SYS_MONITOR_LEN;
94 spl_image.entry_point = CONFIG_SYS_TEXT_BASE;
95 spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
96 spl_image.os = IH_OS_U_BOOT;
97 spl_image.name = "U-Boot";
101 static void __noreturn jump_to_image_no_args(void)
103 typedef void __noreturn (*image_entry_noargs_t)(u32 *);
104 image_entry_noargs_t image_entry =
105 (image_entry_noargs_t) spl_image.entry_point;
107 debug("image entry point: 0x%X\n", spl_image.entry_point);
108 /* Pass the saved boot_params from rom code */
109 #if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU)
110 image_entry = (image_entry_noargs_t)0x80100000;
112 u32 boot_params_ptr_addr = (u32)&boot_params_ptr;
113 image_entry((u32 *)boot_params_ptr_addr);
116 void board_init_r(gd_t *dummy1, ulong dummy2)
119 debug(">>spl:board_init_r()\n");
121 #ifdef CONFIG_SYS_SPL_MALLOC_START
122 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
123 CONFIG_SYS_SPL_MALLOC_SIZE);
126 #ifdef CONFIG_SPL_BOARD_INIT
130 boot_device = spl_boot_device();
131 debug("boot device - %d\n", boot_device);
132 switch (boot_device) {
133 #ifdef CONFIG_SPL_MMC_SUPPORT
134 case BOOT_DEVICE_MMC1:
135 case BOOT_DEVICE_MMC2:
136 case BOOT_DEVICE_MMC2_2:
137 spl_mmc_load_image();
140 #ifdef CONFIG_SPL_NAND_SUPPORT
141 case BOOT_DEVICE_NAND:
142 spl_nand_load_image();
145 #ifdef CONFIG_SPL_YMODEM_SUPPORT
146 case BOOT_DEVICE_UART:
147 spl_ymodem_load_image();
150 #ifdef CONFIG_SPL_SPI_SUPPORT
151 case BOOT_DEVICE_SPI:
156 puts("SPL: Un-supported Boot Device\n");
157 debug("Found: %d\n", boot_device);
162 switch (spl_image.os) {
164 debug("Jumping to U-Boot\n");
165 jump_to_image_no_args();
167 #ifdef CONFIG_SPL_OS_BOOT
169 debug("Jumping to Linux\n");
170 spl_board_prepare_for_linux();
171 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
175 puts("Unsupported OS image.. Jumping nevertheless..\n");
176 jump_to_image_no_args();
181 * This requires UART clocks to be enabled. In order for this to work the
182 * caller must ensure that the gd pointer is valid.
184 void preloader_console_init(void)
187 gd->flags |= GD_FLG_RELOC;
188 gd->baudrate = CONFIG_BAUDRATE;
190 serial_init(); /* serial communications setup */
192 gd->have_console = 1;
194 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
196 #ifdef CONFIG_SPL_DISPLAY_PRINT