This driver manages CoreSight TMC (Trace Memory Controller) which
can act as a link or a sink depending upon its configuration. It
can present itself as an ETF (Embedded Trace FIFO) or ETR
(Embedded Trace Router).

ETF when configured in circular buffer mode acts as a trace
collection sink. When configured in HW fifo mode it acts as link.
ETR always acts as a sink and can be used to route data to memory
allocated in RAM.
Signed-off-by: NPratik Patel <pratikp@codeaurora.org>
Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

CoreSight components are compliant with the ARM CoreSight
architecture specification and can be connected in various
topologies to suit a particular SoC tracing needs. These trace
components can generally be classified as sources, links and
sinks. Trace data produced by one or more sources flows through
the intermediate links connecting the source to the currently
selected sink.

The CoreSight framework provides an interface for the CoreSight trace
drivers to register themselves with. It's intended to build up a
topological view of the CoreSight components and configure the
correct serie of components on user input via sysfs.

For eg., when enabling a source, the framework builds up a path
consisting of all the components connecting the source to the
currently selected sink(s) and enables all of them.

The framework also supports switching between available sinks
and provides status information to user space applications
through the debugfs interface.
Signed-off-by: NPratik Patel <pratikp@codeaurora.org>
Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

UARTs on CNS3xxx are 8250-compatible, not AMBA.
The base address for UART0 is 0x78000000 (physical)
and 0xfb002000 (virtual).
Signed-off-by: NKrzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

UARTs on CNS3xxx are 8250-compatible, not AMBA.
The base address for UART0 is 0x78000000 (physical)
and 0xfb002000 (virtual).
Signed-off-by: NKrzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Add the UART definitions needed to support earlyprintk for MesonX SoCs
on UARTAO.
Signed-off-by: NCarlo Caione <carlo@caione.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Enable low-level debug for Mediatek mt6589 SoC on UART0.
Signed-off-by: NMatthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

HIP04 was added out of order, but so was the previous HISI debug uart
support as well. Minor reshuffling of order.
Signed-off-by: NOlof Johansson <olof@lixom.net>

Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>

Broadcom BCM63xx DSL SoCs have a different UART implementation for which
we need specially crafted low-level debug assembly code to support. Add
support for this using the standard definitions provided in
include/linux/serial_bcm63xx.h (shared with their MIPS counterparts).
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

Add the support of Hisilicon HiP04 debug uart.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

Rename Hisilicon HI3716 to HIX5HD2 and add dependency on ARCH_HIX5HD2.

HiX5HD2 is a SoC with dual Cortex A9 cores for STB market, and original
Hi3xxx SoC is for mobile market.

To avoid confusing the two types of SoCs and also because of different
implementation (SMP, IPs integrated and earlycon config), rename Hi3716
to HIX5HD2 and add ARCH_HIX5HD2.
Signed-off-by: NHaifeng Yan <yanhaifeng@gmail.com>
Signed-off-by: NJiancheng Xue <jchxue@gmail.com>
Signed-off-by: NHaojian Zhuang <haojian.zhuang@linaro.org>
Acked-by: NWei Xu <xuwei5@hisilicon.com>
[olof: fixed description typos]
Signed-off-by: NOlof Johansson <olof@lixom.net>

The uarts on rk3288 are still compatible with the dw_8250, but located
at a different position and need DEBUG_UART_8250_WORD enabled.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Reviewed-by: NDoug Anderson <dianders@chromium.org>
Tested-by: NDoug Anderson <dianders@chromium.org>
Tested-by: NWill Deacon <will.deacon@arm.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>

The debug uart settings from the DEBUG_RK3X_UART options are usable on
all Rockchip SoCs from the rk30xx and rk31xx series but not on the
new rk3288 SoCs. Thus clarify their use to prevent confusion.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Reviewed-by: NDoug Anderson <dianders@chromium.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>

Move debug-macro.S from mach/include to include/debug where
all other common debug macros are.
Signed-off-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

In a multiplatform config, the low level debug option shows several
UART port entries. Improve the user visible string so that it becomes
clear to the user about Samsung UART ports.
While at it also remove some lines from the help text that are no
longer applicable across all Samsung platforms.
Signed-off-by: NSachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Now that all boards have been converted to DT and all the support code
lives in mach-mvebu, we can remove mach-kirkwood.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Link: https://lkml.kernel.org/r/1405028192-9623-2-git-send-email-andrew@lunn.chSigned-off-by: NJason Cooper <jason@lakedaemon.net>

One more step to allowing CLPS711X to participate in the
multi-platform defconfig.
Signed-off-by: NAlexander Shiyan <shc_work@mail.ru>
Signed-off-by: NOlof Johansson <olof@lixom.net>

sun6i/sun8i have a UART in the RTC block group, which can be used
as an early console. This is most useful on sun8i as UART0 is muxed
with MMC0, which is not available if we boot from MMC.
Signed-off-by: NChen-Yu Tsai <wens@csie.org>
Acked-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

Add information about the APQ8084 debug UART physical and virtual
addresses in the DEBUG_QCOM_UARTDM Kconfig help section.
Signed-off-by: NGeorgi Djakov <gdjakov@mm-sol.com>
Signed-off-by: NKumar Gala <galak@codeaurora.org>

Move debug-macro.S from mach/include to include/debug where
all other common debug macros are.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This removes the need for mach/-headers in the debug macro.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Using the lowlevel debug uart is a corner case - even more so in a
multiplatform environment. So it seems reasonable to simply let the
developer set the appropriate uart type for the debugged SoC.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Separate Qualcomm low-level debugging UART to two options.

DEBUG_MSM_UART is used in earlier non-multi platform arches,
like MSM7X00A, QSD8X50 and MSM7X30.

DEBUG_QCOM_UARTDM is used in multi-plafrom arches and have
embedded data mover.

Make DEBUG_UART_PHYS and DEBUG_UART_BASE user adjustable by
Kconfig menu.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Reviewed-by: NStephen Boyd <sboyd@codeaurora.org>
Tested-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NKumar Gala <galak@codeaurora.org>

Enable low-level debug support for i.MX6 SoloX by adding the debug
port definitions for the SoC.
Signed-off-by: NShawn Guo <shawn.guo@freescale.com>

Add choice for low-level debug UART. Similar to i.MX6, there is a
numeric configuration, valid choices are 0 to 3.
Note that the kernel assumes that the boot loader initialized clock
properly.
Signed-off-by: NStefan Agner <stefan@agner.ch>
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>

This patch sorts the entries for DEBUG_UART_{PHYS,VIRT}.
Signed-off-by: NAlexander Shiyan <shc_work@mail.ru>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

efm32 has no mach/uncompress.h, but we can trivially use
the fallback to the ll_debug code by just allowing this
option in Kconfig.

Found during randconfig testing.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NUwe Kleine-König <kernel@pengutronix.de>

The tnetv107x support does not compile, and seems to have been broken
for a while with nobody caring to fix it. So far everyone I asked
said it's probably dead and completely unused and will never again
be needed in a future kernel release, so let's delete it.

If someone finds a use for this code later and is able to get it
to work again, we can always revert the removal.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NSekhar Nori <nsekhar@ti.com>
Acked-by: NKevin Hilman <khilman@linaro.org>

Low-level debugging using the Broadcom Kona UART only makes sense on the
ARCH_BCM_MOBILE platform and would otherwise prevent ARCH_BCM_63XX from
picking up the right UART implementation by default.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: NTim Kryger <tim.kryger@linaro.org>
Signed-off-by: NMatt Porter <mporter@linaro.org>

All Samsung platforms, not only Exynos, use the custom uncompress.h
simply to setup the uart for the initial debug output. This can also
be done using the generic uncompress.h.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This adds support for early debugging of BCM5301X SoC.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NChristian Daudt <bcm@fixthebug.org>
Signed-off-by: NMatt Porter <mporter@linaro.org>

As a pre-requisite step towards enabling multi-platform support
for Exynos, enable it to use generic uncompress.h instead of the
one provided in machine code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Introduce a new mach-qcom that will support SoCs that intend to be
multiplatform compatible while keeping mach-msm to legacy SoC/board
support that will not transition over to multiplatform.

As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
to mach-qcom.
Signed-off-by: NKumar Gala <galak@codeaurora.org>

This patch adds low level debug uart support to Broadcom mobile based
SOCs.
Signed-off-by: NChristian Daudt <bcm@fixthebug.org>
Tested-by: NMarkus Mayer <markus.mayer@linaro.org>
Acked-by: NOlof Johansson <olof@lixom.net>
Tested-by: NMatt Porter <mporter@linaro.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This adds UART0 as found on Marvell 88DE3xxx SoCs, e.g. Armada 1500
to the list of possible lowlevel debug options.
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: NJason Cooper <jason@lakedaemon.net>
Reviewed-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: NArnd Bergmann <arnd@arndb.de>

Now that all the page setting infrastructure is in place,
Add the DEBUG_SET_MODULE_RONX to the ARM debugging Kconfig.
When turned on, data sections for modules will be marked as NX
and read only sections will be marked as such.
Signed-off-by: NLaura Abbott <lauraa@codeaurora.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This patch allows the kernel page tables to be dumped via a debugfs file,
allowing kernel developers to check the layout of the kernel page tables
and the verify the various permissions and type settings.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Add appropriate UART address definitions and support defines for using the
UARTs of the Freescale IMX50 SoC as debug ports.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>

Add debug uart support for MSM8974. This patch adds a Kconfig
entry and the base address for the debug uart.
Signed-off-by: NRohit Vaswani <rvaswani@codeaurora.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Create the hidden config DEBUG_MSM_UART and clean-up
the default selection for CONFIG_DEBUG_LL_INCLUDE.
Acked-by: NDavid Brown <davidb@codeaurora.org>
Signed-off-by: NRohit Vaswani <rvaswani@codeaurora.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>