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 #ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE
106 * CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the
107 * code which loads images in SPL cannot guarantee that
108 * absolutely all read errors will be reported.
109 * An example is the LPC32XX MLC NAND driver, which
110 * will consider that a completely unreadable NAND block
111 * is bad, and thus should be skipped silently.
113 panic("** no mkimage signature but raw image not supported");
115 /* Signature not found - assume u-boot.bin */
116 debug("mkimage signature not found - ih_magic = %x\n",
118 spl_set_header_raw_uboot();
123 __weak
void __noreturn
jump_to_image_no_args(struct spl_image_info
*spl_image
)
125 typedef void __noreturn (*image_entry_noargs_t
)(void);
127 image_entry_noargs_t image_entry
=
128 (image_entry_noargs_t
)(unsigned long)spl_image
->entry_point
;
130 debug("image entry point: 0x%X\n", spl_image
->entry_point
);
134 #ifdef CONFIG_SPL_RAM_DEVICE
135 static void spl_ram_load_image(void)
137 const struct image_header
*header
;
140 * Get the header. It will point to an address defined by handoff
141 * which will tell where the image located inside the flash. For
142 * now, it will temporary fixed to address pointed by U-Boot.
144 header
= (struct image_header
*)
145 (CONFIG_SYS_TEXT_BASE
- sizeof(struct image_header
));
147 spl_parse_image_header(header
);
155 debug("spl_init()\n");
156 #if defined(CONFIG_SYS_MALLOC_F_LEN)
157 gd
->malloc_limit
= CONFIG_SYS_MALLOC_F_LEN
;
160 if (IS_ENABLED(CONFIG_OF_CONTROL
) &&
161 !IS_ENABLED(CONFIG_SPL_DISABLE_OF_CONTROL
)) {
162 ret
= fdtdec_setup();
164 debug("fdtdec_setup() returned error %d\n", ret
);
168 if (IS_ENABLED(CONFIG_SPL_DM
)) {
169 ret
= dm_init_and_scan(true);
171 debug("dm_init_and_scan() returned error %d\n", ret
);
175 gd
->flags
|= GD_FLG_SPL_INIT
;
180 void board_init_r(gd_t
*dummy1
, ulong dummy2
)
184 debug(">>spl:board_init_r()\n");
186 #if defined(CONFIG_SYS_SPL_MALLOC_START)
187 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START
,
188 CONFIG_SYS_SPL_MALLOC_SIZE
);
189 gd
->flags
|= GD_FLG_FULL_MALLOC_INIT
;
191 if (!(gd
->flags
& GD_FLG_SPL_INIT
)) {
197 * timer_init() does not exist on PPC systems. The timer is initialized
198 * and enabled (decrementer) in interrupt_init() here.
203 #ifdef CONFIG_SPL_BOARD_INIT
207 boot_device
= spl_boot_device();
208 debug("boot device - %d\n", boot_device
);
209 switch (boot_device
) {
210 #ifdef CONFIG_SPL_RAM_DEVICE
211 case BOOT_DEVICE_RAM
:
212 spl_ram_load_image();
215 #ifdef CONFIG_SPL_MMC_SUPPORT
216 case BOOT_DEVICE_MMC1
:
217 case BOOT_DEVICE_MMC2
:
218 case BOOT_DEVICE_MMC2_2
:
219 spl_mmc_load_image();
222 #ifdef CONFIG_SPL_NAND_SUPPORT
223 case BOOT_DEVICE_NAND
:
224 spl_nand_load_image();
227 #ifdef CONFIG_SPL_ONENAND_SUPPORT
228 case BOOT_DEVICE_ONENAND
:
229 spl_onenand_load_image();
232 #ifdef CONFIG_SPL_NOR_SUPPORT
233 case BOOT_DEVICE_NOR
:
234 spl_nor_load_image();
237 #ifdef CONFIG_SPL_YMODEM_SUPPORT
238 case BOOT_DEVICE_UART
:
239 spl_ymodem_load_image();
242 #ifdef CONFIG_SPL_SPI_SUPPORT
243 case BOOT_DEVICE_SPI
:
244 spl_spi_load_image();
247 #ifdef CONFIG_SPL_ETH_SUPPORT
248 case BOOT_DEVICE_CPGMAC
:
249 #ifdef CONFIG_SPL_ETH_DEVICE
250 spl_net_load_image(CONFIG_SPL_ETH_DEVICE
);
252 spl_net_load_image(NULL
);
256 #ifdef CONFIG_SPL_USBETH_SUPPORT
257 case BOOT_DEVICE_USBETH
:
258 spl_net_load_image("usb_ether");
261 #ifdef CONFIG_SPL_USB_SUPPORT
262 case BOOT_DEVICE_USB
:
263 spl_usb_load_image();
266 #ifdef CONFIG_SPL_SATA_SUPPORT
267 case BOOT_DEVICE_SATA
:
268 spl_sata_load_image();
271 #ifdef CONFIG_SPL_BOARD_LOAD_IMAGE
272 case BOOT_DEVICE_BOARD
:
273 spl_board_load_image();
277 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
278 puts("SPL: Unsupported Boot Device!\n");
283 switch (spl_image
.os
) {
285 debug("Jumping to U-Boot\n");
287 #ifdef CONFIG_SPL_OS_BOOT
289 debug("Jumping to Linux\n");
290 spl_board_prepare_for_linux();
291 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR
);
294 debug("Unsupported OS image.. Jumping nevertheless..\n");
296 #if defined(CONFIG_SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
297 debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd
->malloc_ptr
,
298 gd
->malloc_ptr
/ 1024);
301 debug("loaded - jumping to U-Boot...");
302 jump_to_image_no_args(&spl_image
);
306 * This requires UART clocks to be enabled. In order for this to work the
307 * caller must ensure that the gd pointer is valid.
309 void preloader_console_init(void)
312 gd
->baudrate
= CONFIG_BAUDRATE
;
314 serial_init(); /* serial communications setup */
316 gd
->have_console
= 1;
318 puts("\nU-Boot SPL " PLAIN_VERSION
" (" U_BOOT_DATE
" - " \
320 #ifdef CONFIG_SPL_DISPLAY_PRINT
326 * spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution
328 * Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM
329 * for the main board_init_r() execution. This is typically because we need
330 * more stack space for things like the MMC sub-system.
332 * This function calculates the stack position, copies the global_data into
333 * place and returns the new stack position. The caller is responsible for
334 * setting up the sp register.
336 * @return new stack location, or 0 to use the same stack
338 ulong
spl_relocate_stack_gd(void)
340 #ifdef CONFIG_SPL_STACK_R
344 /* Get stack position: use 8-byte alignment for ABI compliance */
345 ptr
= CONFIG_SPL_STACK_R_ADDR
- sizeof(gd_t
);
347 new_gd
= (gd_t
*)ptr
;
348 memcpy(new_gd
, (void *)gd
, sizeof(gd_t
));
352 memset(__bss_start
, 0, __bss_end
- __bss_start
);