[U-Boot] [PATCH 1/2 V3] at91sam9261ek: make operational again

Remy Bohmer linux at bohmer.net
Sat Feb 5 13:43:29 CET 2011


Since U-boot v2010.12 the support for the at91sam9261ek board is broken.
This patch solves this issue. This change has been 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 -> -0x20a00000)

Signed-off-by: Remy Bohmer <linux at bohmer.net>
---
 V3: This patch applied to either mainstream or the u-boot-atmel branch
     It contains all changes required to make mainstream work again for
     this board.

     This patch can be pulled from:
	git://git.denx.de/u-boot-usb.git -> fix-at91sam9261ek

 board/atmel/at91sam9261ek/Makefile        |    6 +-
 board/atmel/at91sam9261ek/at91sam9261ek.c |    7 +-
 board/atmel/at91sam9261ek/config.mk       |    1 -
 include/configs/at91sam9261ek.h           |  129 ++++++++++++++++------------
 4 files changed, 81 insertions(+), 62 deletions(-)
 delete mode 100644 board/atmel/at91sam9261ek/config.mk

diff --git a/board/atmel/at91sam9261ek/Makefile b/board/atmel/at91sam9261ek/Makefile
index 9d20ba0..3351493 100644
--- a/board/atmel/at91sam9261ek/Makefile
+++ b/board/atmel/at91sam9261ek/Makefile
@@ -29,13 +29,13 @@ 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)
+SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS-y))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS-y))
 
 $(LIB):	$(obj).depend $(OBJS) $(SOBJS)
 	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
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..d601dad 100644
--- a/include/configs/at91sam9261ek.h
+++ b/include/configs/at91sam9261ek.h
@@ -29,34 +29,42 @@
 
 #define CONFIG_AT91_LEGACY
 
+/*
+ * WARNING:
+ * The initial boot program needs to be adapted such that it loads U-boot
+ * at the provided TEXT_BASE below. Note that the Atmel AT91-bootstrap loader
+ * might be configured such that it loads U-boot at 0x23f00000. But since
+ * U-boot is now being relocated to the end of RAM, this will result in a
+ * lockup during boot due to an overlap in the BSS segment. So, we choose a
+ * safe load adress to begin with, namely 0x20a00000
+ */
+#define CONFIG_SYS_TEXT_BASE		0x20a00000
+
 /* ARM asynchronous clock */
-#define CONFIG_SYS_AT91_MAIN_CLOCK	18432000	/* 18.432 MHz crystal */
-#define CONFIG_SYS_HZ		1000
+#define CONFIG_SYS_AT91_SLOW_CLOCK	32768		/* slow clock xtal */
+#define CONFIG_SYS_AT91_MAIN_CLOCK	18432000	/* main clock xtal */
+#define CONFIG_SYS_HZ			1000
 
 #define CONFIG_ARM926EJS	1	/* This is an ARM926EJS Core	*/
+/* Define actual evaluation board type from used processor type */
 #ifdef CONFIG_AT91SAM9G10EK
 #define CONFIG_AT91SAM9G10	1	/* It's an Atmel AT91SAM9G10 SoC*/
 #else
 #define CONFIG_AT91SAM9261	1	/* It's an Atmel AT91SAM9261 SoC*/
 #endif
+#define CONFIG_AT91FAMILY
+
+/* Misc CPU related */
 #define CONFIG_ARCH_CPU_INIT
 #undef CONFIG_USE_IRQ			/* we don't need IRQ/FIQ stuff	*/
-
-#define CONFIG_CMDLINE_TAG	1	/* enable passing of ATAGs	*/
-#define CONFIG_SETUP_MEMORY_TAGS 1
-#define CONFIG_INITRD_TAG	1
+#define CONFIG_CMDLINE_TAG		/* enable passing of ATAGs */
+#define CONFIG_SETUP_MEMORY_TAGS
+#define CONFIG_INITRD_TAG
 
 #define CONFIG_SKIP_LOWLEVEL_INIT
 
-/*
- * Hardware drivers
- */
-#define CONFIG_AT91_GPIO	1
-#define CONFIG_ATMEL_USART	1
-#undef CONFIG_USART0
-#undef CONFIG_USART1
-#undef CONFIG_USART2
-#define CONFIG_USART3		1	/* USART 3 is DBGU */
+/* general purpose I/O */
+#define CONFIG_AT91_GPIO
 
 /* LCD */
 #define CONFIG_LCD			1
@@ -65,22 +73,31 @@
 #undef LCD_TEST_PATTERN
 #define CONFIG_LCD_INFO			1
 #define CONFIG_LCD_INFO_BELOW_LOGO	1
-#define CONFIG_SYS_WHITE_ON_BLACK		1
+#define CONFIG_SYS_WHITE_ON_BLACK	1
 #define CONFIG_ATMEL_LCD		1
 #ifdef CONFIG_AT91SAM9261EK
 #define CONFIG_ATMEL_LCD_BGR555		1
 #else
-#define	CONFIG_AT91SAM9G10_LCD_BASE		0x23E00000	/* LCD is no more in SRAM */
+#define	CONFIG_AT91SAM9G10_LCD_BASE	0x23E00000 /* LCD is no more in SRAM */
 #endif
 #define CONFIG_SYS_CONSOLE_IS_IN_ENV		1
 
+/* serial console */
+#define CONFIG_ATMEL_USART
+#undef CONFIG_USART0
+#undef CONFIG_USART1
+#undef CONFIG_USART2
+#define CONFIG_USART3		1	/* USART 3 is DBGU */
+#define CONFIG_BAUDRATE			115200
+#define CONFIG_SYS_BAUDRATE_TABLE	{115200 , 19200, 38400, 57600, 9600 }
+
 /* LED */
 #define CONFIG_AT91_LED
-#define	CONFIG_RED_LED		AT91_PIN_PA23	/* this is the power led */
-#define	CONFIG_GREEN_LED	AT91_PIN_PA13	/* this is the user1 led */
-#define	CONFIG_YELLOW_LED	AT91_PIN_PA14	/* this is the user2 led */
+#define	CONFIG_RED_LED			AT91_PIN_PA23	/* the power led */
+#define	CONFIG_GREEN_LED		AT91_PIN_PA13	/* the user1 led */
+#define	CONFIG_YELLOW_LED		AT91_PIN_PA14	/* the user2 led */
 
-#define CONFIG_BOOTDELAY	3
+#define CONFIG_BOOTDELAY		3
 
 /*
  * BOOTP options
@@ -101,21 +118,28 @@
 #undef CONFIG_CMD_LOADS
 #undef CONFIG_CMD_SOURCE
 
-#define CONFIG_CMD_PING		1
-#define CONFIG_CMD_DHCP		1
-#define CONFIG_CMD_NAND		1
-#define CONFIG_CMD_USB		1
+#define CONFIG_CMD_PING			1
+#define CONFIG_CMD_DHCP			1
+#define CONFIG_CMD_NAND			1
+#define CONFIG_CMD_USB			1
+#define CONFIG_CMD_CACHE		1
 
-/* SDRAM */
+/*
+ * SDRAM: 1 bank, 64 MB
+ * Initialized before u-boot gets started.
+ */
 #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		0x04000000 /* 64 megs */
 
+/* size in bytes reserved for initial data */
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + 0x1000 \
+					- GENERATED_GBL_DATA_SIZE)
 /* DataFlash */
 #define CONFIG_ATMEL_DATAFLASH_SPI
 #define CONFIG_HAS_DATAFLASH		1
-#define CONFIG_SYS_SPI_WRITE_TOUT		(5*CONFIG_SYS_HZ)
-#define CONFIG_SYS_MAX_DATAFLASH_BANKS		2
+#define CONFIG_SYS_SPI_WRITE_TOUT	(5*CONFIG_SYS_HZ)
+#define CONFIG_SYS_MAX_DATAFLASH_BANKS	2
 #define CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS0	0xC0000000	/* CS0 */
 #define CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS3	0xD0000000	/* CS3 */
 #define AT91_SPI_CLK			15000000
@@ -125,20 +149,18 @@
 /* NAND flash */
 #ifdef CONFIG_CMD_NAND
 #define CONFIG_NAND_ATMEL
-#define CONFIG_SYS_MAX_NAND_DEVICE		1
-#define CONFIG_SYS_NAND_BASE			0x40000000
-#define CONFIG_SYS_NAND_DBW_8			1
-/* our ALE is AD22 */
-#define CONFIG_SYS_NAND_MASK_ALE		(1 << 22)
-/* our CLE is AD21 */
-#define CONFIG_SYS_NAND_MASK_CLE		(1 << 21)
-#define CONFIG_SYS_NAND_ENABLE_PIN		AT91_PIN_PC14
-#define CONFIG_SYS_NAND_READY_PIN		AT91_PIN_PC15
+#define CONFIG_SYS_MAX_NAND_DEVICE	1
+#define CONFIG_SYS_NAND_BASE		0x40000000
+#define CONFIG_SYS_NAND_DBW_8
+#define CONFIG_SYS_NAND_MASK_ALE	(1 << 22)
+#define CONFIG_SYS_NAND_MASK_CLE	(1 << 21)
+#define CONFIG_SYS_NAND_ENABLE_PIN	AT91_PIN_PC14
+#define CONFIG_SYS_NAND_READY_PIN	AT91_PIN_PC15
 
 #endif
 
 /* NOR flash - no real flash on this board */
-#define CONFIG_SYS_NO_FLASH			1
+#define CONFIG_SYS_NO_FLASH		1
 
 /* Ethernet */
 #define CONFIG_NET_MULTI		1
@@ -155,21 +177,21 @@
 #define CONFIG_USB_ATMEL
 #define CONFIG_USB_OHCI_NEW		1
 #define CONFIG_DOS_PARTITION		1
-#define CONFIG_SYS_USB_OHCI_CPU_INIT		1
-#define CONFIG_SYS_USB_OHCI_REGS_BASE		0x00500000	/* AT91SAM9261_UHP_BASE */
+#define CONFIG_SYS_USB_OHCI_CPU_INIT	1
+#define CONFIG_SYS_USB_OHCI_REGS_BASE	0x00500000	/* AT91SAM9261_UHP_BASE */
 #ifdef CONFIG_AT91SAM9G10EK
-#define CONFIG_SYS_USB_OHCI_SLOT_NAME		"at91sam9g10"
+#define CONFIG_SYS_USB_OHCI_SLOT_NAME	"at91sam9g10"
 #else
-#define CONFIG_SYS_USB_OHCI_SLOT_NAME		"at91sam9261"
+#define CONFIG_SYS_USB_OHCI_SLOT_NAME	"at91sam9261"
 #endif
 #define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS	2
 #define CONFIG_USB_STORAGE		1
 #define CONFIG_CMD_FAT			1
 
-#define CONFIG_SYS_LOAD_ADDR			0x22000000	/* load address */
+#define CONFIG_SYS_LOAD_ADDR		0x22000000	/* load address */
 
-#define CONFIG_SYS_MEMTEST_START		PHYS_SDRAM
-#define CONFIG_SYS_MEMTEST_END			0x23e00000
+#define CONFIG_SYS_MEMTEST_START	CONFIG_SYS_SDRAM_BASE
+#define CONFIG_SYS_MEMTEST_END		0x23e00000
 
 #ifdef CONFIG_SYS_USE_DATAFLASH_CS0
 
@@ -177,7 +199,7 @@
 #define CONFIG_ENV_IS_IN_DATAFLASH	1
 #define CONFIG_SYS_MONITOR_BASE	(CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS0 + 0x8400)
 #define CONFIG_ENV_OFFSET	0x4200
-#define CONFIG_ENV_ADDR		(CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS0 + CONFIG_ENV_OFFSET)
+#define CONFIG_ENV_ADDR	(CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS0 + CONFIG_ENV_OFFSET)
 #define CONFIG_ENV_SIZE		0x4200
 #define CONFIG_BOOTCOMMAND	"cp.b 0xC0042000 0x22000000 0x210000; bootm"
 #define CONFIG_BOOTARGS		"console=ttyS0,115200 "			\
@@ -202,10 +224,10 @@
 #else /* CONFIG_SYS_USE_NANDFLASH */
 
 /* bootstrap + u-boot + env + linux in nandflash */
-#define CONFIG_ENV_IS_IN_NAND	1
+#define CONFIG_ENV_IS_IN_NAND		1
 #define CONFIG_ENV_OFFSET		0x60000
 #define CONFIG_ENV_OFFSET_REDUND	0x80000
-#define CONFIG_ENV_SIZE		0x20000		/* 1 sector = 128 kB */
+#define CONFIG_ENV_SIZE			0x20000		/* 1 sector = 128 kB */
 #define CONFIG_BOOTCOMMAND	"nand read 0x22000000 0xA0000 0x200000; bootm"
 #define CONFIG_BOOTARGS		"console=ttyS0,115200 "			\
 				"root=/dev/mtdblock5 "			\
@@ -216,22 +238,19 @@
 
 #endif
 
-#define CONFIG_BAUDRATE		115200
-#define CONFIG_SYS_BAUDRATE_TABLE	{115200 , 19200, 38400, 57600, 9600 }
-
 #define CONFIG_SYS_PROMPT		"U-Boot> "
 #define CONFIG_SYS_CBSIZE		256
 #define CONFIG_SYS_MAXARGS		16
 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
 #define CONFIG_SYS_LONGHELP		1
-#define CONFIG_CMDLINE_EDITING	1
+#define CONFIG_CMDLINE_EDITING		1
 
 /*
  * Size of malloc() pool
  */
 #define CONFIG_SYS_MALLOC_LEN		ROUND(3 * CONFIG_ENV_SIZE + 128*1024, 0x1000)
 
-#define CONFIG_STACKSIZE	(32*1024)	/* regular stack */
+#define CONFIG_STACKSIZE		(32*1024) /* regular stack */
 
 #ifdef CONFIG_USE_IRQ
 #error CONFIG_USE_IRQ not supported
-- 
1.7.1



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