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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/mips/Kconfig.debug
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@@ -32,7 +32,6 @@
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 config CMDLINE_BOOL
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 	bool "Built-in kernel command line"
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-	default n
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 	help
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 	  For most systems, it is firmware or second stage bootloader that
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 	  by default specifies the kernel command line options.  However,
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 config CMDLINE
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 	string "Default kernel command string"
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 	depends on CMDLINE_BOOL
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-	default ""
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 	help
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 	  On some platforms, there is currently no way for the boot loader to
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 	  pass arguments to the kernel.  For these platforms, and for the cases
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@@ -68,7 +66,6 @@
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 config CMDLINE_OVERRIDE
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 	bool "Built-in command line overrides firmware arguments"
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-	default n
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 	depends on CMDLINE_BOOL
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 	help
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 	  By setting this option to 'Y' you will have your kernel ignore
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@@ -151,4 +148,14 @@
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 	  form their addresses. That is, log base 2 of the span between
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 	  adjacent ns16550 registers in the system.
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+config MIPS_CPS_NS16550_WIDTH
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+	int "UART Register Width"
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+	default 1
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+	help
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+	  ns16550 registers width. UART registers IO access methods will be
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+	  selected in accordance with this parameter. By setting it to 1, 2 or
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+	  4 UART registers will be accessed by means of lb/sb, lh/sh or lw/sw
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+	  instructions respectively. Any value not from that set activates
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+	  lb/sb instructions.
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+
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 endif # MIPS_CPS_NS16550_BOOL