Since U-boot v2010.12 the at91sam9261ek board is broken.
This is solved and tested on this board.
Note: It requires that the 1st stage bootloader (like Atmel at91-bootstrap)
to load U-boot at a different address compared to previous releases of
U-boot due to conflicts in the BSS area during relocation.
(0x23f00000 -> -0x23e00000)
Derived from a patch of: Alexander Stein <alexander.st...@systec-electronic.com>
Signed-off-by: Remy Bohmer <li...@bohmer.net>
---
board/atmel/at91sam9261ek/Makefile | 10 +++++-----
board/atmel/at91sam9261ek/at91sam9261ek.c | 7 ++++---
board/atmel/at91sam9261ek/config.mk | 1 -
include/configs/at91sam9261ek.h | 25 +++++++++++++++++++++----
4 files changed, 30 insertions(+), 13 deletions(-)
delete mode 100644 board/atmel/at91sam9261ek/config.mk
diff --git a/board/atmel/at91sam9261ek/Makefile
b/board/atmel/at91sam9261ek/Makefile
index 9d20ba0..1da810f 100644
--- a/board/atmel/at91sam9261ek/Makefile
+++ b/board/atmel/at91sam9261ek/Makefile
@@ -29,16 +29,16 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).o
-COBJS-y += at91sam9261ek.o
+COBJS-y += $(BOARD).o
COBJS-y += led.o
COBJS-$(CONFIG_HAS_DATAFLASH) += partition.o
-SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
-OBJS := $(addprefix $(obj),$(COBJS-y))
-SOBJS := $(addprefix $(obj),$(SOBJS))
+SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS-y) $(SOBJS-y))
+SOBJS := $(addprefix $(obj),$(SOBJS-y))
$(LIB): $(obj).depend $(OBJS) $(SOBJS)
- $(call cmd_link_o_target, $(OBJS) $(SOBJS))
+ $(call cmd_link_o_target, $(OBJS))
clean:
rm -f $(SOBJS) $(OBJS)
diff --git a/board/atmel/at91sam9261ek/at91sam9261ek.c
b/board/atmel/at91sam9261ek/at91sam9261ek.c
index de5cfae..25c181e 100644
--- a/board/atmel/at91sam9261ek/at91sam9261ek.c
+++ b/board/atmel/at91sam9261ek/at91sam9261ek.c
@@ -246,7 +246,7 @@ int board_init(void)
gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9261EK;
#endif
/* adress of boot parameters */
- gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+ gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
at91_serial_hw_init();
#ifdef CONFIG_CMD_NAND
@@ -273,8 +273,9 @@ int board_eth_init(bd_t *bis)
int dram_init(void)
{
- gd->bd->bi_dram[0].start = PHYS_SDRAM;
- gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
+ /* dram_init must store complete ramsize in gd->ram_size */
+ gd->ram_size = get_ram_size((volatile long *)CONFIG_SYS_SDRAM_BASE,
+ CONFIG_SYS_SDRAM_SIZE);
return 0;
}
diff --git a/board/atmel/at91sam9261ek/config.mk
b/board/atmel/at91sam9261ek/config.mk
deleted file mode 100644
index e554a45..0000000
--- a/board/atmel/at91sam9261ek/config.mk
+++ /dev/null
@@ -1 +0,0 @@
-CONFIG_SYS_TEXT_BASE = 0x23f00000
diff --git a/include/configs/at91sam9261ek.h b/include/configs/at91sam9261ek.h
index 401478b..0cffd94 100644
--- a/include/configs/at91sam9261ek.h
+++ b/include/configs/at91sam9261ek.h
@@ -27,6 +27,8 @@
#ifndef __CONFIG_H
#define __CONFIG_H
+#include <asm/sizes.h>
+
#define CONFIG_AT91_LEGACY
/* ARM asynchronous clock */
@@ -39,6 +41,7 @@
#else
#define CONFIG_AT91SAM9261 1 /* It's an Atmel AT91SAM9261 SoC*/
#endif
+#define CONFIG_AT91FAMILY
#define CONFIG_ARCH_CPU_INIT
#undef CONFIG_USE_IRQ /* we don't need IRQ/FIQ stuff */
@@ -105,11 +108,21 @@
#define CONFIG_CMD_DHCP 1
#define CONFIG_CMD_NAND 1
#define CONFIG_CMD_USB 1
+#define CONFIG_CMD_CACHE 1
/* SDRAM */
#define CONFIG_NR_DRAM_BANKS 1
-#define PHYS_SDRAM 0x20000000
-#define PHYS_SDRAM_SIZE 0x04000000 /* 64 megs */
+#define CONFIG_SYS_SDRAM_BASE 0x20000000
+#define CONFIG_SYS_SDRAM_SIZE SZ_64M /* 64 megs */
+
+/*
+ * AT91-bootstrap expects that U-boot needs to be loaded at 0x23f00000
+ * but since U-boot is now being relocated to the end of RAM which is
+ * almost in the same area, there will be an overlap in the BSS segment
+ * resulting in a lockup during boot. So, we need to tell the
+ * AT91-bootstrap code to load it at a lower address, namely 0x23e00000
+ */
+#define CONFIG_SYS_TEXT_BASE 0x23e00000
/* DataFlash */
#define CONFIG_ATMEL_DATAFLASH_SPI
@@ -168,7 +181,7 @@
#define CONFIG_SYS_LOAD_ADDR 0x22000000 /* load address
*/
-#define CONFIG_SYS_MEMTEST_START PHYS_SDRAM
+#define CONFIG_SYS_MEMTEST_START CONFIG_SYS_SDRAM_BASE
#define CONFIG_SYS_MEMTEST_END 0x23e00000
#ifdef CONFIG_SYS_USE_DATAFLASH_CS0
@@ -230,8 +243,12 @@
* Size of malloc() pool
*/
#define CONFIG_SYS_MALLOC_LEN ROUND(3 * CONFIG_ENV_SIZE + 128*1024,
0x1000)
+/* size in bytes reserved for initial data */
+
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + SZ_4K \
+ - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_STACKSIZE (32*1024) /* regular stack */
+#define CONFIG_STACKSIZE (SZ_32K) /* regular stack */
#ifdef CONFIG_USE_IRQ
#error CONFIG_USE_IRQ not supported
--
1.7.1
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