--- zzzz-none-000/linux-3.10.107/arch/mips/Kconfig.debug	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mips/Kconfig.debug	2021-02-04 17:41:59.000000000 +0000
@@ -20,6 +20,18 @@
 	  doesn't cooperate with an X server. You should normally say N here,
 	  unless you want to debug such a crash.
 
+config EARLY_PRINTK_8250
+	bool
+	depends on EARLY_PRINTK && USE_GENERIC_EARLY_PRINTK_8250
+	default y
+	help
+	  "8250/16550 and compatible serial early printk driver"
+	  If you say Y here, it will be possible to use a 8250/16550 serial
+	  port as the boot console.
+
+config USE_GENERIC_EARLY_PRINTK_8250
+	bool
+
 config CMDLINE_BOOL
 	bool "Built-in kernel command line"
 	default n
@@ -67,24 +79,6 @@
 
 	  Normally, you will choose 'N' here.
 
-config DEBUG_STACKOVERFLOW
-	bool "Check for stack overflows"
-	depends on DEBUG_KERNEL
-	help
-	  This option will cause messages to be printed if free stack space
-	  drops below a certain limit(2GB on MIPS). The debugging option
-	  provides another way to check stack overflow happened on kernel mode
-	  stack usually caused by nested interruption.
-
-config SMTC_IDLE_HOOK_DEBUG
-	bool "Enable additional debug checks before going into CPU idle loop"
-	depends on DEBUG_KERNEL && MIPS_MT_SMTC
-	help
-	  This option enables Enable additional debug checks before going into
-	  CPU idle loop.  For details on these checks, see
-	  arch/mips/kernel/smtc.c.  This debugging option result in significant
-	  overhead so should be disabled in production kernels.
-
 config SB1XXX_CORELIS
 	bool "Corelis Debugger"
 	depends on SIBYTE_SB1xxx_SOC
@@ -93,15 +87,6 @@
 	  Select compile flags that produce code that can be processed by the
 	  Corelis mksym utility and UDB Emulator.
 
-config RUNTIME_DEBUG
-	bool "Enable run-time debugging"
-	depends on DEBUG_KERNEL
-	help
-	  If you say Y here, some debugging macros will do run-time checking.
-	  If you say N here, those macros will mostly turn to no-ops.  See
-	  arch/mips/include/asm/debug.h for debugging macros.
-	  If unsure, say N.
-
 config DEBUG_ZBOOT
 	bool "Enable compressed kernel support debugging"
 	depends on DEBUG_KERNEL && SYS_SUPPORTS_ZBOOT
@@ -128,4 +113,40 @@
 	help
 	  Add several files to the debugfs to test spinlock speed.
 
+config SCACHE_DEBUGFS
+	bool "L2 cache debugfs entries"
+	depends on DEBUG_FS
+	help
+	  Enable this to allow parts of the L2 cache configuration, such as
+	  whether or not prefetching is enabled, to be exposed to userland
+	  via debugfs.
+
+	  If unsure, say N.
+
+menuconfig MIPS_CPS_NS16550
+	bool "CPS SMP NS16550 UART output"
+	depends on MIPS_CPS
+	help
+	  Output debug information via an ns16550 compatible UART if exceptions
+	  occur early in the boot process of a secondary core.
+
+if MIPS_CPS_NS16550
+
+config MIPS_CPS_NS16550_BASE
+	hex "UART Base Address"
+	default 0x1b0003f8 if MIPS_MALTA
+	help
+	  The base address of the ns16550 compatible UART on which to output
+	  debug information from the early stages of core startup.
+
+config MIPS_CPS_NS16550_SHIFT
+	int "UART Register Shift"
+	default 0 if MIPS_MALTA
+	help
+	  The number of bits to shift ns16550 register indices by in order to
+	  form their addresses. That is, log base 2 of the span between
+	  adjacent ns16550 registers in the system.
+
+endif # MIPS_CPS_NS16550
+
 endmenu