[U-Boot] [RFC PATCH 3/3] ARM: imx: mx6memcal: allow build of combined SPL+U-Boot

[Eric Nelson <eric@nelint.com>]

Add an imximage config file to construct u-boot.imx with SPL
as a plugin and use it as a straw-man for the mx6memcal
virtual board.

Note that this breaks the build of SPL because only one value
can be listed for IMX_CONFIG.

As it stands, all imx SPL builds use an almost empty .cfg file
from arch/arm/configs/spl_sd.cfg.

This could be hard-coded for use in building SPL if we just
remove the comments from the file (copyright).

Signed-off-by: Eric Nelson <eric@nelint.com>
---
 arch/arm/imx-common/spl-plus-u-boot.cfg | 4 ++++
 configs/mx6memcal_defconfig             | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/imx-common/spl-plus-u-boot.cfg

diff --git a/arch/arm/imx-common/spl-plus-u-boot.cfg b/arch/arm/imx-common/spl-plus-u-boot.cfg
new file mode 100644
index 0000000..5940cb0
--- /dev/null
+++ b/arch/arm/imx-common/spl-plus-u-boot.cfg
@@ -0,0 +1,4 @@
+IMAGE_VERSION 2
+BOOT_FROM sd
+PLUGIN spl/u-boot-spl.bin 0x00907000
+
diff --git a/configs/mx6memcal_defconfig b/configs/mx6memcal_defconfig
index 7e07182..06aa85f 100644
--- a/configs/mx6memcal_defconfig
+++ b/configs/mx6memcal_defconfig
@@ -6,7 +6,7 @@ CONFIG_MX6_DDRCAL=y
 CONFIG_TARGET_MX6MEMCAL=y
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_SPL_WATCHDOG_SUPPORT=y
-CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,SPL,MX6QDL"
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl-plus-u-boot.cfg,SPL,MX6QDL"
 CONFIG_SPL=y
 CONFIG_HUSH_PARSER=y
 # CONFIG_CMD_BOOTD is not set
-- 
2.7.4