[PATCH u-boot-marvell v2 13/20] arm: mvebu: Enable BootROM output on A38x

Pali Rohár
2022-01-12T17:24:15Z

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>
---
arch/arm/mach-mvebu/Makefile | 7 +++++++
arch/arm/mach-mvebu/kwbimage.cfg.in | 3 +++
2 files changed, 10 insertions(+)

diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index 9ace049c9d7c..74478a3134e3 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -69,6 +69,13 @@ 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 603e8863450c..ccb09975817e 100644
--- 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
--
2.20.1