Default spl/u-boot-spl.lds created by spl/Makefile resolves the spl text load addr to 0x0. As 0x0 belongs to iROM addr so Global variables can not be used.
Adding specific smdk5250-uboot-spl.lds makes possible to use Global Variables in spl.
Signed-off-by: Alim Akhtar alim.akhtar@samsung.com Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com --- Chnages in V2: - None board/samsung/smdk5250/smdk5250-uboot-spl.lds | 66 +++++++++++++++++++++++++ include/configs/smdk5250.h | 5 ++ 2 files changed, 71 insertions(+), 0 deletions(-) create mode 100644 board/samsung/smdk5250/smdk5250-uboot-spl.lds
diff --git a/board/samsung/smdk5250/smdk5250-uboot-spl.lds b/board/samsung/smdk5250/smdk5250-uboot-spl.lds new file mode 100644 index 0000000..d78dd77 --- /dev/null +++ b/board/samsung/smdk5250/smdk5250-uboot-spl.lds @@ -0,0 +1,66 @@ +/* + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, garyj@denx.de + * + * Copyright (C) 2012 Samsung Electronics + * + * Based on arch/arm/cpu/armv7/omap-common/u-boot-spl.lds + * + * 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 + */ + +MEMORY { .sram : ORIGIN = CONFIG_SPL_TEXT_BASE, \ + LENGTH = CONFIG_SPL_MAX_SIZE } + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) + +SECTIONS +{ + .text : + { + __start = .; + arch/arm/cpu/armv7/start.o (.text) + *(.text*) + } >.sram + . = ALIGN(4); + + .rodata : { *(SORT_BY_ALIGNMENT(.rodata*)) } >.sram + . = ALIGN(4); + + .data : { *(SORT_BY_ALIGNMENT(.data*)) } >.sram + . = ALIGN(4); + + /* Align .machine_param on 256 byte boundary for easier searching */ + .machine_param ALIGN(0x100) : { *(.machine_param) } >.sram + . = ALIGN(4); + + __image_copy_end = .; + _end = .; + + .bss : + { + . = ALIGN(4); + __bss_start = .; + *(.bss*) + . = ALIGN(4); + __bss_end__ = .; + } >.sram +} diff --git a/include/configs/smdk5250.h b/include/configs/smdk5250.h index 9659f9e..405abd5 100644 --- a/include/configs/smdk5250.h +++ b/include/configs/smdk5250.h @@ -105,6 +105,11 @@ #define CONFIG_SPL #define COPY_BL2_FNPTR_ADDR 0x02020030
+/* specific .lds file */ +#define CONFIG_SPL_LDSCRIPT "board/samsung/smdk5250/smdk5250-uboot-spl.lds" +#define CONFIG_SPL_TEXT_BASE 0x02023400 +#define CONFIG_SPL_MAX_SIZE (14 * 1024) + #define CONFIG_BOOTCOMMAND "mmc read 40007000 451 2000; bootm 40007000"
/* Miscellaneous configurable options */