u-boot/arch/arm/cpu/armv7/omap-common/spl.c

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/*
* (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 <asm/u-boot.h>
#include <asm/utils.h>
#include <asm/arch/sys_proto.h>
#include <nand.h>
#include <mmc.h>
#include <fat.h>
Move timestamp and version files into 'generated' subdir There is a rather subtle build problem where the build time stamp is not updated for out-of-tree builds if there exists an in-tree build which has a valid timestamp file. So if you do an in-tree build, then an out-of-tree build your timestamp will not change. The correct timestamp_autogenerated.h lives in the object tree, but it is not always found there. The source still lives in the source tree and when compiling version.h, it includes timestamp_autogenerated.h. Since the current directory is always searched first, this will come from the source tree rather than the object tree if it exists there. This affects dependency generation also, which means that common/cmd_version.o will not even be rebuilt if you have ever done an in-tree build. A similar problem exists with the version file. This change moves both files into the 'generated' subdir, which is already used for asm-offsets.h. Then timestamp.h and version.h are updated to include the files from there. There are other places where these generated files are included, but I cannot see why these don't just use the timestamp.h and version.h headers. So this change also tidies that up. I have tested this with in- and out-of-tree builds, but not SPL. I have looked at various other options for fixing this, including sed on the dep files, -I- and -include flags to gcc, but I don't think they can be made to work. Comments welcome. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-10-10 08:55:19 +00:00
#include <version.h>
#include <asm/omap_common.h>
#include <asm/arch/mmc_host_def.h>
#include <i2c.h>
#include <image.h>
DECLARE_GLOBAL_DATA_PTR;
struct spl_image_info spl_image;
/* Define global data structure pointer to it*/
static gd_t gdata __attribute__ ((section(".data")));
static bd_t bdata __attribute__ ((section(".data")));
inline void hang(void)
{
puts("### ERROR ### Please RESET the board ###\n");
for (;;)
;
}
void board_init_f(ulong dummy)
{
/*
* We call relocate_code() with relocation target same as the
* CONFIG_SYS_SPL_TEXT_BASE. This will result in relocation getting
* skipped. Instead, only .bss initialization will happen. That's
* all we need
*/
debug(">>board_init_f()\n");
relocate_code(CONFIG_SPL_STACK, &gdata, CONFIG_SPL_TEXT_BASE);
}
void spl_parse_image_header(const struct image_header *header)
{
u32 header_size = sizeof(struct image_header);
if (__be32_to_cpu(header->ih_magic) == IH_MAGIC) {
spl_image.size = __be32_to_cpu(header->ih_size) + header_size;
spl_image.entry_point = __be32_to_cpu(header->ih_load);
/* Load including the header */
spl_image.load_addr = spl_image.entry_point - header_size;
spl_image.os = header->ih_os;
spl_image.name = (const char *)&header->ih_name;
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 */
printf("mkimage signature not found - ih_magic = %x\n",
header->ih_magic);
puts("Assuming u-boot.bin ..\n");
/* Let's assume U-Boot will not be more than 200 KB */
spl_image.size = 200 * 1024;
spl_image.entry_point = CONFIG_SYS_TEXT_BASE;
spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
spl_image.os = IH_OS_U_BOOT;
spl_image.name = "U-Boot";
}
}
static void jump_to_image_no_args(void)
{
typedef void (*image_entry_noargs_t)(void)__attribute__ ((noreturn));
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);
image_entry();
}
void jump_to_image_no_args(void) __attribute__ ((noreturn));
void board_init_r(gd_t *id, ulong dummy)
{
u32 boot_device;
debug(">>spl:board_init_r()\n");
timer_init();
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
boot_device = omap_boot_device();
debug("boot device - %d\n", boot_device);
switch (boot_device) {
#ifdef CONFIG_SPL_MMC_SUPPORT
case BOOT_DEVICE_MMC1:
case BOOT_DEVICE_MMC2:
spl_mmc_load_image();
break;
#endif
#ifdef CONFIG_SPL_NAND_SUPPORT
case BOOT_DEVICE_NAND:
spl_nand_load_image();
break;
#endif
default:
printf("SPL: Un-supported Boot Device - %d!!!\n", boot_device);
hang();
break;
}
switch (spl_image.os) {
case IH_OS_U_BOOT:
debug("Jumping to U-Boot\n");
jump_to_image_no_args();
break;
default:
puts("Unsupported OS image.. Jumping nevertheless..\n");
jump_to_image_no_args();
}
}
/* This requires UART clocks to be enabled */
void preloader_console_init(void)
{
const char *u_boot_rev = U_BOOT_VERSION;
char rev_string_buffer[50];
gd = &gdata;
gd->bd = &bdata;
gd->flags |= GD_FLG_RELOC;
gd->baudrate = CONFIG_BAUDRATE;
serial_init(); /* serial communications setup */
/* Avoid a second "U-Boot" coming from this string */
u_boot_rev = &u_boot_rev[7];
printf("\nU-Boot SPL %s (%s - %s)\n", u_boot_rev, U_BOOT_DATE,
U_BOOT_TIME);
omap_rev_string(rev_string_buffer);
printf("Texas Instruments %s\n", rev_string_buffer);
}