[U-Boot] relationship between "ARM_DCC" and "DEBUG_UART_ARM_DCC"?

Robert P. J. Day rpjday at crashcourse.ca
Fri Apr 19 11:27:09 UTC 2019


  just noticed the oddness regarding those two Kbuild symbols:

$ git grep ARM_DCC
arch/x86/include/asm/acpi_table.h:#define ACPI_DBG2_ARM_DCC   0x000F
configs/zynq_cse_qspi_defconfig:CONFIG_DEBUG_UART_ARM_DCC=y
drivers/serial/Kconfig:config DEBUG_UART_ARM_DCC
drivers/serial/Makefile:obj-$(CONFIG_ARM_DCC) += arm_dcc.o
drivers/serial/arm_dcc.c:#ifdef CONFIG_DEBUG_UART_ARM_DCC
include/configs/xilinx_versal.h:#define CONFIG_ARM_DCC
include/configs/xilinx_zynqmp.h:#define CONFIG_ARM_DCC
include/configs/zynq-common.h:#define CONFIG_ARM_DCC
scripts/config_whitelist.txt:CONFIG_ARM_DCC
$

  strangely(?), there is a Kbuild config directive for the latter:

  drivers/serial/Kconfig:config DEBUG_UART_ARM_DCC

but not the former, which is just hardcoded in some xilinx-associated
header files. is this deliberate? it just seems ... weird.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                         http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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