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author | Aneesh V <aneesh@ti.com> | 2011-07-21 09:10:21 -0400 |
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committer | U-Boot <uboot@aari01-12.(none)> | 2011-08-03 12:49:20 +0200 |
commit | bcae72116257201d7288cb8c525a29aea4875b95 (patch) | |
tree | 27511a4f1475382047a803b50883416ae87b144c /arch/arm/cpu/armv7/omap-common/spl.c | |
parent | 033ca72438635c68f3940216a550217b9e7f6417 (diff) | |
download | u-boot-imx-bcae72116257201d7288cb8c525a29aea4875b95.zip u-boot-imx-bcae72116257201d7288cb8c525a29aea4875b95.tar.gz u-boot-imx-bcae72116257201d7288cb8c525a29aea4875b95.tar.bz2 |
omap: add basic SPL support
- Provide alternate implementations of board_init_f()
board_init_r() for OMAP spl.
- Provide linker script
- Initialize global data
- Add serial console support
- Update CONFIG_SYS_TEXT_BASE to allow for SPL's bss and move
it to board config header from config.mk
Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common/spl.c')
-rw-r--r-- | arch/arm/cpu/armv7/omap-common/spl.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/spl.c b/arch/arm/cpu/armv7/omap-common/spl.c new file mode 100644 index 0000000..b201543 --- /dev/null +++ b/arch/arm/cpu/armv7/omap-common/spl.c @@ -0,0 +1,82 @@ +/* + * (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/arch/sys_proto.h> +#include <timestamp_autogenerated.h> +#include <version_autogenerated.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* 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 board_init_r(gd_t *id, ulong dummy) +{ + for (;;) + ; +} + +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; + + setup_clocks_for_console(); + 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); +} |