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>
28 #include <asm/utils.h>
35 #include <linux/compiler.h>
37 DECLARE_GLOBAL_DATA_PTR;
39 u32* boot_params_ptr = NULL;
40 struct spl_image_info spl_image;
42 /* Define global data structure pointer to it*/
43 static gd_t gdata __attribute__ ((section(".data")));
44 static bd_t bdata __attribute__ ((section(".data")));
46 inline void hang(void)
48 puts("### ERROR ### Please RESET the board ###\n");
53 void board_init_f(ulong dummy)
56 * We call relocate_code() with relocation target same as the
57 * CONFIG_SYS_SPL_TEXT_BASE. This will result in relocation getting
58 * skipped. Instead, only .bss initialization will happen. That's
61 debug(">>board_init_f()\n");
62 relocate_code(CONFIG_SPL_STACK, &gdata, CONFIG_SPL_TEXT_BASE);
66 * Default function to determine if u-boot or the OS should
67 * be started. This implementation always returns 1.
69 * Please implement your own board specific funcion to do this.
72 * 0 to not start u-boot
73 * positive if u-boot should start
75 #ifdef CONFIG_SPL_OS_BOOT
76 __weak int spl_start_uboot(void)
78 puts("SPL: Please implement spl_start_uboot() for your board\n");
79 puts("SPL: Direct Linux boot not active!\n");
84 void spl_parse_image_header(const struct image_header *header)
86 u32 header_size = sizeof(struct image_header);
88 if (__be32_to_cpu(header->ih_magic) == IH_MAGIC) {
89 spl_image.size = __be32_to_cpu(header->ih_size) + header_size;
90 spl_image.entry_point = __be32_to_cpu(header->ih_load);
91 /* Load including the header */
92 spl_image.load_addr = spl_image.entry_point - header_size;
93 spl_image.os = header->ih_os;
94 spl_image.name = (const char *)&header->ih_name;
95 debug("spl: payload image: %s load addr: 0x%x size: %d\n",
96 spl_image.name, spl_image.load_addr, spl_image.size);
98 /* Signature not found - assume u-boot.bin */
99 puts("mkimage signature not found, assuming u-boot.bin ..\n");
100 debug("mkimage signature not found - ih_magic = %x\n",
102 /* Let's assume U-Boot will not be more than 200 KB */
103 spl_image.size = 200 * 1024;
104 spl_image.entry_point = CONFIG_SYS_TEXT_BASE;
105 spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
106 spl_image.os = IH_OS_U_BOOT;
107 spl_image.name = "U-Boot";
112 * This function jumps to an image with argument. Normally an FDT or ATAGS
114 * arg: Pointer to paramter image in RAM
116 #ifdef CONFIG_SPL_OS_BOOT
117 static void __noreturn jump_to_image_linux(void *arg)
119 debug("Entering kernel arg pointer: 0x%p\n", arg);
120 typedef void (*image_entry_arg_t)(int, int, void *)
121 __attribute__ ((noreturn));
122 image_entry_arg_t image_entry =
123 (image_entry_arg_t) spl_image.entry_point;
124 cleanup_before_linux();
125 image_entry(0, CONFIG_MACH_TYPE, arg);
129 static void __noreturn jump_to_image_no_args(void)
131 typedef void __noreturn (*image_entry_noargs_t)(u32 *);
132 image_entry_noargs_t image_entry =
133 (image_entry_noargs_t) spl_image.entry_point;
135 debug("image entry point: 0x%X\n", spl_image.entry_point);
136 /* Pass the saved boot_params from rom code */
137 #if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU)
138 image_entry = (image_entry_noargs_t)0x80100000;
140 u32 boot_params_ptr_addr = (u32)&boot_params_ptr;
141 image_entry((u32 *)boot_params_ptr_addr);
144 void board_init_r(gd_t *id, ulong dummy)
147 debug(">>spl:board_init_r()\n");
149 #ifdef CONFIG_SYS_SPL_MALLOC_START
150 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
151 CONFIG_SYS_SPL_MALLOC_SIZE);
154 #ifdef CONFIG_SPL_BOARD_INIT
158 boot_device = spl_boot_device();
159 debug("boot device - %d\n", boot_device);
160 switch (boot_device) {
161 #ifdef CONFIG_SPL_MMC_SUPPORT
162 case BOOT_DEVICE_MMC1:
163 case BOOT_DEVICE_MMC2:
164 case BOOT_DEVICE_MMC2_2:
165 spl_mmc_load_image();
168 #ifdef CONFIG_SPL_NAND_SUPPORT
169 case BOOT_DEVICE_NAND:
170 spl_nand_load_image();
173 #ifdef CONFIG_SPL_YMODEM_SUPPORT
174 case BOOT_DEVICE_UART:
175 spl_ymodem_load_image();
178 #ifdef CONFIG_SPL_SPI_SUPPORT
179 case BOOT_DEVICE_SPI:
184 puts("SPL: Un-supported Boot Device\n");
185 debug("Found: %d\n", boot_device);
190 switch (spl_image.os) {
192 debug("Jumping to U-Boot\n");
193 jump_to_image_no_args();
195 #ifdef CONFIG_SPL_OS_BOOT
197 debug("Jumping to Linux\n");
198 spl_board_prepare_for_linux();
199 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
203 puts("Unsupported OS image.. Jumping nevertheless..\n");
204 jump_to_image_no_args();
208 /* This requires UART clocks to be enabled */
209 void preloader_console_init(void)
213 gd->flags |= GD_FLG_RELOC;
214 gd->baudrate = CONFIG_BAUDRATE;
216 serial_init(); /* serial communications setup */
218 gd->have_console = 1;
220 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
222 #ifdef CONFIG_SPL_DISPLAY_PRINT