With xip booting configuration, we don't need to copy the next image
(U-Boot or linux xipimage) from flash to sdram area.
Flash memory organization is like this:
spl-U-Boot: u-boot-spl.bin : 0x0800_0000
U-Boot : u-boot-dtb.bin : 0x0800_8000
linux : xipImage : 0x0800_8000
It is also possible to have U-Boot binary & linux binaries configured at
different addresses of flash memory like U-Boot at 0x0800_8000 & linux
xipImage at 0x0800_4000. But in any case, spl-U-Boot needs to be compiled for
U-Boot as next binary with SPL_OS_BOOT option disabled.
By default, spl is configured to boot linux xipImage.
Signed-off-by: Vikas Manocha <vikas.mano...@st.com>
---
Changed in v2: None
arch/arm/mach-stm32/stm32f7/Kconfig | 1 +
board/st/stm32f746-disco/stm32f746-disco.c | 2 +-
include/configs/stm32f746-disco.h | 12 +++++-------
3 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-stm32/stm32f7/Kconfig
b/arch/arm/mach-stm32/stm32f7/Kconfig
index 3f6455e..6acf9cf 100644
--- a/arch/arm/mach-stm32/stm32f7/Kconfig
+++ b/arch/arm/mach-stm32/stm32f7/Kconfig
@@ -22,6 +22,7 @@ config SUPPORT_SPL
select SPL_DM_SEQ_ALIAS
select SPL_OF_TRANSLATE
select SPL_OS_BOOT
+ select SPL_XIP_SUPPORT
config SPL_PINCTRL_FULL
default n if TARGET_STM32F746_DISCO
diff --git a/board/st/stm32f746-disco/stm32f746-disco.c
b/board/st/stm32f746-disco/stm32f746-disco.c
index 335dcb9..11957e0 100644
--- a/board/st/stm32f746-disco/stm32f746-disco.c
+++ b/board/st/stm32f746-disco/stm32f746-disco.c
@@ -117,7 +117,7 @@ void spl_board_init(void)
}
u32 spl_boot_device(void)
{
- return BOOT_DEVICE_NOR;
+ return BOOT_DEVICE_XIP;
}
#endif
diff --git a/include/configs/stm32f746-disco.h
b/include/configs/stm32f746-disco.h
index 9052025..4e0edcb 100644
--- a/include/configs/stm32f746-disco.h
+++ b/include/configs/stm32f746-disco.h
@@ -12,17 +12,18 @@
#define CONFIG_SYS_INIT_SP_ADDR 0x20050000
#ifdef CONFIG_SUPPORT_SPL
-#define CONFIG_SYS_TEXT_BASE 0xC0000000
+#define CONFIG_SYS_TEXT_BASE 0x08008000
+#define CONFIG_SYS_LOAD_ADDR 0x08008000
#else
#define CONFIG_SYS_TEXT_BASE CONFIG_SYS_FLASH_BASE
+#define CONFIG_SYS_LOAD_ADDR 0xC0400000
+#define CONFIG_LOADADDR 0xC0400000
#endif
/*
* Configuration of the external SDRAM memory
*/
#define CONFIG_NR_DRAM_BANKS 1
-#define CONFIG_SYS_LOAD_ADDR 0xC0400000
-#define CONFIG_LOADADDR 0xC0400000
#define CONFIG_SYS_MAX_FLASH_SECT 8
#define CONFIG_SYS_MAX_FLASH_BANKS 1
@@ -83,16 +84,13 @@
#define CONFIG_SPL_TEXT_BASE CONFIG_SYS_FLASH_BASE
#define CONFIG_SYS_MONITOR_LEN (512 * 1024)
#define CONFIG_SYS_SPL_LEN 0x00008000
-#define CONFIG_SYS_UBOOT_START 0XC00003FD
+#define CONFIG_SYS_UBOOT_START 0x080083FD
#define CONFIG_SYS_UBOOT_BASE (CONFIG_SYS_FLASH_BASE + \
CONFIG_SYS_SPL_LEN)
-#define CONFIG_SYS_OS_BASE 0x08040000
/* DT blob (fdt) address */
-#define CONFIG_SYS_SPL_ARGS_ADDR 0xC0000100
#define CONFIG_SYS_FDT_BASE (CONFIG_SYS_FLASH_BASE + \
0x1C0000)
-#define CONFIG_SYS_FDT_SIZE (20*1024)
#endif
/* For SPL ends */
--
1.9.1
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