Merge changes from topic "ck/tf-a/verbosity-cleanup" into integration

* changes:
build: unify verbosity handling
build: add facilities for interpreting boolean values
build: add string casing

Merge changes from topic "ck/tf-a/verbosity-cleanup" into integration

* changes:
build: unify verbosity handling
build: add facilities for interpreting boolean values
build: add string casing facilities to utilities

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build: unify verbosity handling

This change introduces a few helper variables for dealing with verbose
and silent build modes: `silent`, `verbose`, `q` and `s`.

The `silent` and `verbose` variables

build: unify verbosity handling

This change introduces a few helper variables for dealing with verbose
and silent build modes: `silent`, `verbose`, `q` and `s`.

The `silent` and `verbose` variables are boolean values determining
whether the build system has been configured to run silently or
verbosely respectively (i.e. with `--silent` or `V=1`).

These two modes cannot be used together - if `silent` is truthy then
`verbose` is always falsy. As such:

make --silent V=1

... results in a silent build.

In addition to these boolean variables, we also introduce two new
variables - `s` and `q` - for use in rule recipes to conditionally
suppress the output of commands.

When building silently, `s` expands to a value which disables the
command that follows, and `q` expands to a value which supppresses
echoing of the command:

$(s)echo 'This command is neither echoed nor executed'
$(q)echo 'This command is executed but not echoed'

When building verbosely, `s` expands to a value which disables the
command that follows, and `q` expands to nothing:

$(s)echo 'This command is neither echoed nor executed'
$(q)echo 'This command is executed and echoed'

In all other cases, both `s` and `q` expand to a value which suppresses
echoing of the command that follows:

$(s)echo 'This command is executed but not echoed'
$(q)echo 'This command is executed but not echoed'

The `s` variable is predominantly useful for `echo` commands, where you
always want to suppress echoing of the command itself, whilst `q` is
more useful for all other commands.

Change-Id: I8d8ff6ed714d3cb401946c52955887ed7dca602b
Signed-off-by: Chris Kay <chris.kay@arm.com>

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Merge "build: use toolchain identifiers in conditions" into integration

Merge "build: use new toolchain variables for tools" into integration

build: use toolchain identifiers in conditions

The toolchain refactor change introduces the `${toolchain}-${tool}-id`
variables, which provide identifiers for all of the toolchain tools used
by the

build: use toolchain identifiers in conditions

The toolchain refactor change introduces the `${toolchain}-${tool}-id`
variables, which provide identifiers for all of the toolchain tools used
by the build system. This change replaces the various conditions that
are in use to identify these tools based on the path with a standard set
of comparisons against these new identifier variables.

Change-Id: Ib60e592359fa6e415c19a012e68d660f87436ca7
Signed-off-by: Chris Kay <chris.kay@arm.com>

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build: use new toolchain variables for tools

This change migrates the values of `CC`, `CPP`, `AS` and other toolchain
variables to the new `$(toolchain)-$(tool)` variables, which were
introduced by

build: use new toolchain variables for tools

This change migrates the values of `CC`, `CPP`, `AS` and other toolchain
variables to the new `$(toolchain)-$(tool)` variables, which were
introduced by the toolchain refactor patch. These variables should be
equivalent to the values that they're replacing.

Change-Id: I644fe4ce82ef1894bed129ddb4b6ab94fb04985d
Signed-off-by: Chris Kay <chris.kay@arm.com>

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Merge changes from topic "amlogic-g12a" into integration

* changes:
amlogic: g12a: Add support for the S905X2 (G12A) platform
amlogic: makefile: Use PLAT variable when possible
amlogic: sha_dm

Merge changes from topic "amlogic-g12a" into integration

* changes:
amlogic: g12a: Add support for the S905X2 (G12A) platform
amlogic: makefile: Use PLAT variable when possible
amlogic: sha_dma: Move register mappings to platform header

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amlogic: g12a: Add support for the S905X2 (G12A) platform

Introduce the preliminary support for the Amlogic S905X2 (G12A) SoC.

This port is a minimal implementation of BL31 capable of booting
mainl

amlogic: g12a: Add support for the S905X2 (G12A) platform

Introduce the preliminary support for the Amlogic S905X2 (G12A) SoC.

This port is a minimal implementation of BL31 capable of booting
mainline U-Boot and Linux. Tested on a SEI510 board.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Change-Id: Ife958f10e815a4530292c45446adb71239f3367f

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