arm: mvebu: Enable BootROM output on A38x

BootROMs on pre-A38x SoCs enabled its output on UART by default, but A38x'
BootROM has its output on UART disabled by default.

To enable BootROM output on A38x SoC, it is required to set DEBUG flag
(which only enables BootROM output and nothing more) in kwbimage. For UART
images this DEBUG flag is ignored by BootROM.

Enable kwbimage DEBUG flag for all A38x boards.

With this change BootROM prints the following (success) information on UART
before booting U-Boot kwbimage:

  BootROM - 1.73
  Booting from SPI flash

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index 799935c..a5a2087 100644 (file)
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -70,6 +70,13 @@ KWB_REPLACE += SEC_FUSE_DUMP
 KWB_CFG_SEC_FUSE_DUMP = a38x
 endif
 
+ifdef CONFIG_ARMADA_38X
+# BootROM output is by default enabled on pre-A38x and disabled on A38x
+# DEBUG flag on A38x for non-UART boot source only enable BootROM output and nothing more
+KWB_REPLACE += DEBUG
+KWB_CFG_DEBUG = 1
+endif
+
 quiet_cmd_kwbcfg = KWBCFG  $@
 cmd_kwbcfg = sed -ne '$(foreach V,$(KWB_REPLACE),s/\#@$(V)/$(V) $(KWB_CFG_$(V))/;)p' \
        <$< >$(dir $@)$(@F)

diff --git a/arch/arm/mach-mvebu/kwbimage.cfg.in b/arch/arm/mach-mvebu/kwbimage.cfg.in
index 603e886..ccb0997 100644 (file)
--- a/arch/arm/mach-mvebu/kwbimage.cfg.in
+++ b/arch/arm/mach-mvebu/kwbimage.cfg.in
@@ -11,5 +11,8 @@ VERSION               1
 # Boot Media configurations
 #@BOOT_FROM
 
+# Enable BootROM output via DEBUG flag on SoCs which require it
+#@DEBUG
+
 # Include U-Boot SPL with DDR3 training code into Binary Header
 BINARY spl/u-boot-spl.bin #@LOAD_ADDRESS