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ARM: debug: provide generic option choices for 8250 and PL01x ports

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Provide generic option choices for 8250 and PL01x UART ports; these can
now be selected by UART type rather than asking about the platform.
This means that a kernel configuration user can manually choose the
various parameters of the debug UART without resorting to the platform
having to encode the possible settings.

These two generic options are preferred over further debug entries for
these ports; the existing options which refer back to the 8250 and PL01x
ports are now considered deprecated.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2013-07-07 15:29:38 +01:00
parent 4e218b9928
commit f8f1279ce0
1 changed files with 37 additions and 7 deletions
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44
arch/arm/Kconfig.debug
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@ -806,6 +806,32 @@ choice
For more details about semihosting, please see
chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
config DEBUG_LL_UART_8250
bool "Kernel low-level debugging via 8250 UART"
help
Say Y here if you wish the debug print routes to direct
their output to an 8250 UART. You can use this option
to provide the parameters for the 8250 UART rather than
selecting one of the platform specific options above if
you know the parameters for the port.
This option is preferred over the platform specific
options; the platform specific options are deprecated
and will be soon removed.
config DEBUG_LL_UART_PL01X
bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
help
Say Y here if you wish the debug print routes to direct
their output to a PL01x Primecell UART. You can use
this option to provide the parameters for the UART
rather than selecting one of the platform specific
options above if you know the parameters for the port.
This option is preferred over the platform specific
options; the platform specific options are deprecated
and will be soon removed.
endchoice
config DEBUG_EXYNOS_UART
@ -845,8 +871,8 @@ config DEBUG_STI_UART
config DEBUG_LL_INCLUDE
string
default "debug/8250.S" if DEBUG_UART_8250
default "debug/pl01x.S" if DEBUG_UART_PL01X
default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
default "debug/exynos.S" if DEBUG_EXYNOS_UART
default "debug/icedcc.S" if DEBUG_ICEDCC
default "debug/imx.S" if DEBUG_IMX1_UART || \
@ -870,11 +896,13 @@ config DEBUG_LL_INCLUDE
default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
default "mach/debug-macro.S"
# Compatibility options for PL01x
config DEBUG_UART_PL01X
def_bool ARCH_EP93XX || \
ARCH_INTEGRATOR || \
ARCH_VERSATILE
# Compatibility options for 8250
config DEBUG_UART_8250
def_bool ARCH_DOVE || ARCH_EBSA110 || \
(FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
@ -925,7 +953,8 @@ config DEBUG_UART_PHYS
default 0xffd82340 if ARCH_IOP13XX
default 0xfff36000 if DEBUG_HIGHBANK_UART
default 0xfffff700 if ARCH_IOP33X
depends on DEBUG_UART_8250 || DEBUG_UART_PL01X
depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
DEBUG_UART_8250 || DEBUG_UART_PL01X
config DEBUG_UART_VIRT
hex "Virtual base address of debug UART"
@ -971,23 +1000,24 @@ config DEBUG_UART_VIRT
default 0xfefff700 if ARCH_IOP33X
default 0xff003000 if DEBUG_U300_UART
default DEBUG_UART_PHYS if !MMU
depends on DEBUG_UART_8250 || DEBUG_UART_PL01X
depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
DEBUG_UART_8250 || DEBUG_UART_PL01X
config DEBUG_UART_8250_SHIFT
int "Register offset shift for the 8250 debug UART"
depends on DEBUG_UART_8250
depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
default 0 if FOOTBRIDGE || ARCH_IOP32X
default 2
config DEBUG_UART_8250_WORD
bool "Use 32-bit accesses for 8250 UART"
depends on DEBUG_UART_8250
depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
depends on DEBUG_UART_8250_SHIFT >= 2
default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART
config DEBUG_UART_8250_FLOW_CONTROL
bool "Enable flow control for 8250 UART"
depends on DEBUG_UART_8250
depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC
config DEBUG_UNCOMPRESS