leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
961c437b6c
u-boot/common/spl/spl.c
Ilya Yanok 7ac2fe2da2 OMAP: networking support for SPL 
This patch adds support for networking in SPL. Some devices are
capable of loading SPL via network so it makes sense to load the
main U-Boot binary via network too. This patch tries to use
existing network code as much as possible. Unfortunately, it depends
on environment which in turn depends on other code so SPL size
is increased significantly. No effort was done to decouple network
code and environment so far.

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Tom Rini <trini@ti.com>
2012-10-01 10:02:14 -07:00

249 lines
6.3 KiB
C
Raw Blame History

/*
* (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->flags |= GD_FLG_RELOC;
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
}
Reference in New Issue View Git Blame Copy Permalink