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Commit ae85ac71 authored by James Hogan's avatar James Hogan
Browse files

metag: Add JTAG Debug Adapter (DA) support 



Add basic JTAG Debug Adapter (DA) support so that drivers which
communicate with the DA can detect whether one is actually present
(otherwise the target will halt indefinitely).

This allows the metag_da TTY driver and imgdafs filesystem driver to be
built, updates defconfigs, and sets up the metag_da console early if
it's configured in.

Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
parent 690998b6

MAINTAINERS

+2 −0
Original line number Diff line number Diff line
@@ -5042,6 +5042,8 @@ F: Documentation/devicetree/bindings/metag/ 
F:	drivers/clocksource/metag_generic.c

F:	drivers/irqchip/irq-metag.c

F:	drivers/irqchip/irq-metag-ext.c

F:	drivers/tty/metag_da.c

F:	fs/imgdafs/



MICROBLAZE ARCHITECTURE

M:	Michal Simek <monstr@monstr.eu>

arch/metag/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -214,6 +214,18 @@ config METAG_PERFCOUNTER_IRQS 
	  When disabled, Performance Counters information will be collected

	  based on Timer Interrupt.



config METAG_DA

	bool "DA support"

	help

	  Say Y if you plan to use a DA debug adapter with Linux. The presence

	  of the DA will be detected automatically at boot, so it is safe to say

	  Y to this option even when booting without a DA.



	  This enables support for services provided by DA JTAG debug adapters,

	  such as:

	  - communication over DA channels (such as the console driver).

	  - use of the DA filesystem.



menu "Boot options"



config METAG_BUILTIN_DTB

arch/metag/configs/meta1_defconfig

+3 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ CONFIG_PARTITION_ADVANCED=y 
# CONFIG_IOSCHED_CFQ is not set

CONFIG_FLATMEM_MANUAL=y

CONFIG_META12_FPGA=y

CONFIG_METAG_DA=y

CONFIG_HZ_100=y

CONFIG_DEVTMPFS=y

CONFIG_DEVTMPFS_MOUNT=y
@@ -27,6 +28,8 @@ CONFIG_BLK_DEV_RAM_SIZE=16384 
# CONFIG_SERIO is not set

# CONFIG_VT is not set

# CONFIG_LEGACY_PTYS is not set

CONFIG_DA_TTY=y

CONFIG_DA_CONSOLE=y

# CONFIG_DEVKMEM is not set

# CONFIG_HW_RANDOM is not set

# CONFIG_HWMON is not set

arch/metag/configs/meta2_defconfig

+3 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ CONFIG_PARTITION_ADVANCED=y 
CONFIG_METAG_L2C=y

CONFIG_FLATMEM_MANUAL=y

CONFIG_METAG_HALT_ON_PANIC=y

CONFIG_METAG_DA=y

CONFIG_HZ_100=y

CONFIG_DEVTMPFS=y

# CONFIG_STANDALONE is not set
@@ -28,6 +29,8 @@ CONFIG_BLK_DEV_RAM_SIZE=16384 
# CONFIG_SERIO is not set

# CONFIG_VT is not set

# CONFIG_LEGACY_PTYS is not set

CONFIG_DA_TTY=y

CONFIG_DA_CONSOLE=y

# CONFIG_DEVKMEM is not set

# CONFIG_HW_RANDOM is not set

# CONFIG_HWMON is not set

arch/metag/configs/meta2_smp_defconfig

+3 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ CONFIG_METAG_L2C=y 
CONFIG_FLATMEM_MANUAL=y

CONFIG_METAG_HALT_ON_PANIC=y

CONFIG_SMP=y

CONFIG_METAG_DA=y

CONFIG_HZ_100=y

CONFIG_DEVTMPFS=y

# CONFIG_STANDALONE is not set
@@ -29,6 +30,8 @@ CONFIG_BLK_DEV_RAM_SIZE=16384 
# CONFIG_SERIO is not set

# CONFIG_VT is not set

# CONFIG_LEGACY_PTYS is not set

CONFIG_DA_TTY=y

CONFIG_DA_CONSOLE=y

# CONFIG_DEVKMEM is not set

# CONFIG_HW_RANDOM is not set

# CONFIG_HWMON is not set