mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-25 03:18:51 +09:00
![Tom Rini](/assets/img/avatar_default.png)
We have not strictly speaking relocated at this point, do not claim that we have. This is not required for output. Signed-off-by: Tom Rini <trini@ti.com>
248 lines
6.2 KiB
C
248 lines
6.2 KiB
C
/*
|
|
* (C) Copyright 2010
|
|
* Texas Instruments, <www.ti.com>
|
|
*
|
|
* Aneesh V <aneesh@ti.com>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
#include <common.h>
|
|
#include <spl.h>
|
|
#include <asm/u-boot.h>
|
|
#include <nand.h>
|
|
#include <fat.h>
|
|
#include <version.h>
|
|
#include <i2c.h>
|
|
#include <image.h>
|
|
#include <malloc.h>
|
|
#include <linux/compiler.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#ifndef CONFIG_SYS_UBOOT_START
|
|
#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
|
|
#endif
|
|
#ifndef CONFIG_SYS_MONITOR_LEN
|
|
#define CONFIG_SYS_MONITOR_LEN (200 * 1024)
|
|
#endif
|
|
|
|
u32 *boot_params_ptr = NULL;
|
|
struct spl_image_info spl_image;
|
|
|
|
/* Define board data structure */
|
|
static bd_t bdata __attribute__ ((section(".data")));
|
|
|
|
inline void hang(void)
|
|
{
|
|
puts("### ERROR ### Please RESET the board ###\n");
|
|
for (;;)
|
|
;
|
|
}
|
|
|
|
/*
|
|
* Default function to determine if u-boot or the OS should
|
|
* be started. This implementation always returns 1.
|
|
*
|
|
* Please implement your own board specific funcion to do this.
|
|
*
|
|
* RETURN
|
|
* 0 to not start u-boot
|
|
* positive if u-boot should start
|
|
*/
|
|
#ifdef CONFIG_SPL_OS_BOOT
|
|
__weak int spl_start_uboot(void)
|
|
{
|
|
puts("SPL: Please implement spl_start_uboot() for your board\n");
|
|
puts("SPL: Direct Linux boot not active!\n");
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
void spl_parse_image_header(const struct image_header *header)
|
|
{
|
|
u32 header_size = sizeof(struct image_header);
|
|
|
|
if (image_get_magic(header) == IH_MAGIC) {
|
|
if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) {
|
|
/*
|
|
* On some system (e.g. powerpc), the load-address and
|
|
* entry-point is located at address 0. We can't load
|
|
* to 0-0x40. So skip header in this case.
|
|
*/
|
|
spl_image.load_addr = image_get_load(header);
|
|
spl_image.entry_point = image_get_ep(header);
|
|
spl_image.size = image_get_data_size(header);
|
|
} else {
|
|
spl_image.entry_point = image_get_load(header);
|
|
/* Load including the header */
|
|
spl_image.load_addr = spl_image.entry_point -
|
|
header_size;
|
|
spl_image.size = image_get_data_size(header) +
|
|
header_size;
|
|
}
|
|
spl_image.os = image_get_os(header);
|
|
spl_image.name = image_get_name(header);
|
|
debug("spl: payload image: %s load addr: 0x%x size: %d\n",
|
|
spl_image.name, spl_image.load_addr, spl_image.size);
|
|
} else {
|
|
/* Signature not found - assume u-boot.bin */
|
|
debug("mkimage signature not found - ih_magic = %x\n",
|
|
header->ih_magic);
|
|
/* Let's assume U-Boot will not be more than 200 KB */
|
|
spl_image.size = CONFIG_SYS_MONITOR_LEN;
|
|
spl_image.entry_point = CONFIG_SYS_UBOOT_START;
|
|
spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
|
|
spl_image.os = IH_OS_U_BOOT;
|
|
spl_image.name = "U-Boot";
|
|
}
|
|
}
|
|
|
|
static void __noreturn jump_to_image_no_args(void)
|
|
{
|
|
typedef void __noreturn (*image_entry_noargs_t)(u32 *);
|
|
image_entry_noargs_t image_entry =
|
|
(image_entry_noargs_t) spl_image.entry_point;
|
|
|
|
debug("image entry point: 0x%X\n", spl_image.entry_point);
|
|
/* Pass the saved boot_params from rom code */
|
|
#if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU)
|
|
image_entry = (image_entry_noargs_t)0x80100000;
|
|
#endif
|
|
u32 boot_params_ptr_addr = (u32)&boot_params_ptr;
|
|
image_entry((u32 *)boot_params_ptr_addr);
|
|
}
|
|
|
|
#ifdef CONFIG_SPL_RAM_DEVICE
|
|
static void spl_ram_load_image(void)
|
|
{
|
|
const struct image_header *header;
|
|
|
|
/*
|
|
* Get the header. It will point to an address defined by handoff
|
|
* which will tell where the image located inside the flash. For
|
|
* now, it will temporary fixed to address pointed by U-Boot.
|
|
*/
|
|
header = (struct image_header *)
|
|
(CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
|
|
|
|
spl_parse_image_header(header);
|
|
}
|
|
#endif
|
|
|
|
void board_init_r(gd_t *dummy1, ulong dummy2)
|
|
{
|
|
u32 boot_device;
|
|
debug(">>spl:board_init_r()\n");
|
|
|
|
#ifdef CONFIG_SYS_SPL_MALLOC_START
|
|
mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
|
|
CONFIG_SYS_SPL_MALLOC_SIZE);
|
|
#endif
|
|
|
|
timer_init();
|
|
|
|
#ifdef CONFIG_SPL_BOARD_INIT
|
|
spl_board_init();
|
|
#endif
|
|
|
|
boot_device = spl_boot_device();
|
|
debug("boot device - %d\n", boot_device);
|
|
switch (boot_device) {
|
|
#ifdef CONFIG_SPL_RAM_DEVICE
|
|
case BOOT_DEVICE_RAM:
|
|
spl_ram_load_image();
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_SPL_MMC_SUPPORT
|
|
case BOOT_DEVICE_MMC1:
|
|
case BOOT_DEVICE_MMC2:
|
|
case BOOT_DEVICE_MMC2_2:
|
|
spl_mmc_load_image();
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_SPL_NAND_SUPPORT
|
|
case BOOT_DEVICE_NAND:
|
|
spl_nand_load_image();
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_SPL_NOR_SUPPORT
|
|
case BOOT_DEVICE_NOR:
|
|
spl_nor_load_image();
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_SPL_YMODEM_SUPPORT
|
|
case BOOT_DEVICE_UART:
|
|
spl_ymodem_load_image();
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_SPL_SPI_SUPPORT
|
|
case BOOT_DEVICE_SPI:
|
|
spl_spi_load_image();
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_SPL_ETH_SUPPORT
|
|
case BOOT_DEVICE_CPGMAC:
|
|
#ifdef CONFIG_SPL_ETH_DEVICE
|
|
spl_net_load_image(CONFIG_SPL_ETH_DEVICE);
|
|
#else
|
|
spl_net_load_image(NULL);
|
|
#endif
|
|
break;
|
|
#endif
|
|
default:
|
|
debug("SPL: Un-supported Boot Device\n");
|
|
hang();
|
|
}
|
|
|
|
switch (spl_image.os) {
|
|
case IH_OS_U_BOOT:
|
|
debug("Jumping to U-Boot\n");
|
|
break;
|
|
#ifdef CONFIG_SPL_OS_BOOT
|
|
case IH_OS_LINUX:
|
|
debug("Jumping to Linux\n");
|
|
spl_board_prepare_for_linux();
|
|
jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
|
|
#endif
|
|
default:
|
|
debug("Unsupported OS image.. Jumping nevertheless..\n");
|
|
}
|
|
jump_to_image_no_args();
|
|
}
|
|
|
|
/*
|
|
* This requires UART clocks to be enabled. In order for this to work the
|
|
* caller must ensure that the gd pointer is valid.
|
|
*/
|
|
void preloader_console_init(void)
|
|
{
|
|
gd->bd = &bdata;
|
|
gd->baudrate = CONFIG_BAUDRATE;
|
|
|
|
serial_init(); /* serial communications setup */
|
|
|
|
gd->have_console = 1;
|
|
|
|
puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
|
|
U_BOOT_TIME ")\n");
|
|
#ifdef CONFIG_SPL_DISPLAY_PRINT
|
|
spl_display_print();
|
|
#endif
|
|
}
|