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MLK-19767: imx7ulp: configs: add a new macro for kernel dtb 

The current u-boot configures the fdt_file environment variable
to the file name of that built together with u-boot. Sometimes
Linux kernel needs another dtb file other than the one built with
u-boot. For example, imx7ulp needs to build imx7ulp-evk-qspi.dts for
u-boot, but the kernel needs imx7ulp-evk.dts. Adding this new
macro to let the user have an option to specify a dtb file to run
Linux kernel.

Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
This commit is contained in:
Shenwei Wang 2018-09-28 15:37:32 -05:00
parent 2e8a6b6ec6
commit 26766be892
3 changed files with 13 additions and 1 deletions
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1
configs/mx7ulp_evk_defconfig
View File

@ -3,6 +3,7 @@ CONFIG_ARCH_MX7ULP=y
CONFIG_SYS_TEXT_BASE=0x67800000
CONFIG_TARGET_MX7ULP_EVK=y
CONFIG_DEFAULT_DEVICE_TREE="imx7ulp-evk-qspi"
CONFIG_KERNEL_USE_STD_DTB="imx7ulp-evk"
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/mx7ulp_evk/imximage.cfg"
CONFIG_BOARD_EARLY_INIT_F=y
CONFIG_HUSH_PARSER=y

4
dts/Kconfig
View File

@ -29,6 +29,10 @@ config OF_CONTROL
This feature provides for run-time configuration of U-Boot
via a flattened device tree.
config KERNEL_USE_STD_DTB
string "Specify the dtb file name for Linux kernel"
default DEFAULT_DEVICE_TREE
config OF_BOARD_FIXUP
bool "Board-specific manipulation of Device Tree"
help

9
include/configs/mx7ulp_evk.h
View File

@ -90,6 +90,13 @@
#define CONFIG_CMD_MEMTEST
#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_MEMTEST_START + (PHYS_SDRAM_SIZE >> 1))
#ifdef CONFIG_KERNEL_USE_STD_DTB
#define LD_FDT_FILE CONFIG_KERNEL_USE_STD_DTB
#else
#define LD_FDT_FILE CONFIG_DEFAULT_DEVICE_TREE
#endif
#define CONFIG_MFG_ENV_SETTINGS \
CONFIG_MFG_ENV_SETTINGS_DEFAULT \
"initrd_addr=0x63800000\0" \
@ -105,7 +112,7 @@
"console=ttyLP0\0" \
"fdt_high=0xffffffff\0" \
"initrd_high=0xffffffff\0" \
"fdt_file=imx7ulp-evk.dtb\0" \
"fdt_file=" LD_FDT_FILE ".dtb\0" \
"fdt_addr=0x63000000\0" \
"tee_addr=0x64000000\0" \
"tee_file=uTee-7ulp\0" \