Merge pull request #1193 from jwerner-chromium/JW_coreboot ...

New console API and coreboot support [v4]

Merge pull request #1233 from soby-mathew/sm/rm_uniphier_override ...

Allow API deprecation for uniphier platform

Allow API deprecation for uniphier platform ...

The `override ERROR_DEPRECATION = 1` setting in uniphier platform
makes deprecation of API difficult. Hence removing the same. This
flag should be specified on the command line if needed.

Change-Id: I8c82d8d13944e450a8cd636de3326137c04d7560
Signed-off-by: Soby Mathew <soby.mathew@arm.com>

Merge pull request #1229 from manojkumar-arm/manojkumar-arm/ca72-aarch32-reset-fix ...

lib/cpus: fix branching in reset function for cortex-a72 AARCH32 mode

Merge pull request #1227 from geesun/qx/emmc_macros ...

emmc: add macros CMD21, BUS_WIDTH_DDR_4 and BUS_WIDTH_DDR_8

coreboot: Add support for CBMEM console ...

coreboot supports an in-memory console to store firmware logs even when
no serial console is available. It is widely supported by
coreboot-compatible bootloaders (including SeaBIOS and GRUB) and can be
read by the Linux kernel.

This patch allows BL31 to add its own log messages to this console. The
driver will be registered automatically if coreboot support is compiled
in and detects the presence of a console buffer in the coreboot tables.

Change-Id: I31254dfa0c2fdeb7454634134b5707b4b4154907
Signed-off-by: Julius Werner <jwerner@chromium.org>

rockchip: Move to MULTI_CONSOLE_API ...

This patch changes all Rockchip platforms to use the new
MULTI_CONSOLE_API. The platform-specific plat_crash_console
implementations are removed so that the platform can use the ones from
the common platform code instead.

Also change the registers used in plat_crash_print_regs. The existing
use of x16 and x17 has always been illegal, since those registers are
reserved for use by the linker as a temporary scratch registers in
intra-procedure-call veneers and can never be expected to maintain their
values across a function call.

Change-Id: I8249424150be8d5543ed4af93b56756795a5288f
Signed-off-by: Julius Werner <jwerner@chromium.org>

rockchip: Use coreboot-supplied serial console on coreboot systems ...

This patch changes all Rockchip platforms to initialize the serial
console with information supplied by coreboot rather than hardcoded
base address and divisor values if BL31 is run on top of coreboot.
Moving the BL2-to-BL31 parameter parsing as early as possible to ensure
that the console is available for all following code.

Also update the Rockchip platform to use MULTI_CONSOLE_API.

Change-Id: I670d350fa2f8b8133539f91ac14977ab47db60d9
Signed-off-by: Julius Werner <jwerner@chromium.org>

Add platform-independent coreboot support library ...

This patch adds the foundation for a platform-independent coreboot
support library that can be shared by all platforms that boot BL31 from
coreboot (acting as BL2). It adds code to parse the "coreboot table", a
data structure that coreboot uses to communicate different kinds of
information to later-stage firmware and certain OS drivers.

As a first small use case for this information, allow platforms to
access the serial console configuration used by coreboot, removing the
need to hardcode base address and divisors and allowing Trusted Firmware
to benefit from coreboot's user configuration (e.g. which UART to pick
and which baud rate to use).

Change-Id: I2bfb39cd2609ce6640b844ab68df6c9ae3f28e9e
Signed-off-by: Julius Werner <jwerner@chromium.org>

drivers: cadence: cdns: Update CDNS driver to support MULTI_CONSOLE_API ...

This patch updates the Cadence CDNS console driver to support the new
console API. The driver will continue to support the old API as well by
checking the MULTI_CONSOLE_API compile-time flag.

Change-Id: I2ef8fb0d6ab72696997db1e0243a533499569d6b
Signed-off-by: Julius Werner <jwerner@chromium.org>

drivers: arm: pl011: Update PL011 driver to support MULTI_CONSOLE_API ...

This patch updates the ARM PL011 console driver to support the new
console API. The driver will continue to support the old API as well by
checking the MULTI_CONSOLE_API compile-time flag.

Change-Id: Ic34e4158addbb0c5fae500c9cff899c05a4f4206
Signed-off-by: Julius Werner <jwerner@chromium.org>

drivers: ti: uart: Update 16550 UART driver to support MULTI_CONSOLE_API ...

This patch updates the TI 16550 console driver to support the new
console API. The driver will continue to support the old API as well by
checking the MULTI_CONSOLE_API compile-time flag.

Change-Id: I60a44b7ba3c35c74561824c04b8dbe3e3039324c
Signed-off-by: Julius Werner <jwerner@chromium.org>

Add default crash console code to hook up to new console API ...

This patch expands the weak stubs for the plat_crash_console_xxx
functions in common platform code to use the new console API for crash
output. This should make crash console output "just work" for most cases
without the need for the platform to explicitly set up a crash console.
For cases where the normal console framework doesn't work (e.g. very
early crashes, before the platform can register any consoles), platforms
are still able to override the functions just like before.

This feature requires the MULTI_CONSOLE_API compile-time flag to work.
For builds which don't have it set, this patch has no practical effect.

Change-Id: I80dd161cb43f9db59a0bad2dae33c6560cfac584
Signed-off-by: Julius Werner <jwerner@chromium.org>

Merge pull request #1200 from robertovargas-arm/bl2-el3 ...

Add BL2_AT_EL3 build option

lib/cpus: fix branching in reset function for cortex-a72 AARCH32 mode ...

In AARCH32 mode, cortex_a72_reset_func branches to address in lr
register instead of r5 register. This leads to linux boot failure
of Cortex-A72 cores in AARCH32 mode on Juno-R2 board.

This patch fixes the branching of cortex_a72_reset_func to r5
register as in cortex_a57_reset_func implementation.

Signed-off-by: Manoj Kumar <manoj.kumar3@arm.com>

bl2-el3: Don't compile BL1 when BL2_AT_EL3 is defined in FVP ...

This patch modifies the makefiles to avoid the definition
of BL1_SOURCES and BL2_SOURCES in the tbbr makefiles, and
it lets to the platform makefiles to define them if they
actually need these images. In the case of BL2_AT_EL3
BL1 will not be needed usually because the Boot ROM will
jump directly to BL2.

Change-Id: Ib6845a260633a22a646088629bcd7387fe35dcf9
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

bl2-el3: Don't include BL2 in fip for BL2 at EL3 ...

It is better to not include BL2 in FIP when using `BL2 at EL3` as
platforms using this config would not have the capability to parse the
FIP format in Boot ROM and BL2 needs to be loaded independently. This
patch does the required changes for the same.

Change-Id: Iad285c247b3440e2d827fef97c3dd81f5c09cabc
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

bl2-el3: Add documentation for BL2 at EL3 ...

Update firmware-design.rst, porting-guide.rst and user-guide.rst
with the information about BL2 at EL3. Firmware-design.rst is
also update to explain how to test this feauture with FVP.

Change-Id: I86d64bc64594e13eb041cea9cefa3f7f3fa745bd
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

bl2-el3: Mark all the assembly functions in bl2 at el3 ...

When BL2_AT_EL3 option is enabled some platforms are going to
need a resident part in BL2 because the boot rom may jump to it
after a reset. This patch introduces __TEXT_RESIDENT_START__ and
__TEXT_RESIDENT_END__ linker symbols that mark the resident region.

Change-Id: Ib20c1b8ee257831bcc0ca7d3df98d0cb617a04f8
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Mark functions defined in assembly files ...

This patch change the name of the section containing the functions
defined in assembly files from text.* to text.asm.*. This change
makes possible to select in the linker script the functions
defined in those files.

Change-Id: If35e44ef1b43ffd951dfac5e052db75d7198e2e0
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

bl2-el3: Add BL2 at EL3 support in FVP ...

This patch add supports for the new API added for BL2 at EL3 for
FVP. We don't have a non-TF Boot ROM for FVP, but this option can be
tested setting specific parameters in the model.

The bl2 image is loaded directly in memory instead of being loaded
by a non-TF Boot ROM and the reset address is changed:

	--data cluster0.cpu0=bl2.bin@0x4001000
	-C cluster0.cpu0.RVBAR=0x4001000

These parameters mean that in the cold boot path the processor will
jump to BL2 again. For this reason, BL2 is loaded in dram in this
case, to avoid other images reclaiming BL2 memory.

Change-Id: Ieb2ff8535a9e67ccebcd8c2212cad366e7776422
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

bl2-el3: Add BL2_EL3 image ...

This patch enables BL2 to execute at the highest exception level
without any dependancy on TF BL1. This enables platforms which already
have a non-TF Boot ROM to directly load and execute BL2 and subsequent BL
stages without need for BL1.  This is not currently possible because
BL2 executes at S-EL1 and cannot jump straight to EL3.

Change-Id: Ief1efca4598560b1b8c8e61fbe26d1f44e929d69
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

Merge pull request #1226 from masahir0y/utils ...

utils: rename struct mem_region_t to struct mem_region

Merge pull request #1211 from Leo-Yan/remove_ca73_cpu_nap_state ...

Hikey960: Remove ca73 cpu nap state

emmc: add macros CMD21, BUS_WIDTH_DDR_4 and BUS_WIDTH_DDR_8 ...

Add some macros according to JEDEC Standard Embedded Multi-Media
Card (eMMC) Electrical Standard (5.1)": Table 145 - Bus Mode
Selection.

Change-Id: Iaa45e0582653ef4290efd60d039f0bdc420eeb47
Signed-off-by: Qixiang Xu <qixiang.xu@arm.com>

utils: rename struct mem_region_t to struct mem_region ...

typedef mem_region_t mem_region_t;

... seems to work because they belong to different name-spaces,
but humans are confused even if compilers are not.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Hikey960: Change CPU standby state for WFI ...

At early time, the CPU CA73 retention state has been supported on
Hikey960.  Later we found the system has the hang issue and for
resolving this issue Hisilicon released new MCU firmware, but
unfortunately the new MCU firmware has side effect and results in the
CA73 CPU cannot really enter retention state and roll back to WFI state.

After discussion we cannot see the possibility to enable CA73 retention
state anymore on Hikey960, based on this conclusion we should remove
this state supporting from ARM-TF and roll back to WFI state only.  We
will commit one patch to remove CA73 CPU retention state in kernel DT
binding as well.

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
Cc: Kevin Wang <jean.wangtao@linaro.org>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Leo Yan <leo.yan@linaro.org>

Revert "Hikey960: Change to use recommended power state id format" ...

This reverts commit fdae60b.

The commit fdae60b changed the
parameter encoding for the hikey960.  However that implies a DT change
in the kernel side.  After submitting the DT change for upstreaming,
the backward compatibility issue and the interface change raise some
concerns from the Linux community about the issues related to kernel <->
ATF alignment.  There is no way to detect a mis-alignment of those
without a deep knowledge of the ATF and the kernel.  Furthermore, the
failing calls to PSCI in the idle path (because of bad parameters), will
lead to busy looping, implying: thermal issues and extra energy
consumption.

In regard of the Linux community concerns, the potential issues when the
ATF and the kernel are not aligned, it is preferable to revert the
commit.

Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
Cc: Kevin Wang <jean.wangtao@linaro.org>
Co-authored-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Leo Yan <leo.yan@linaro.org>

Merge pull request #1221 from hzhuang1/fix_HLE ...

emmc/dw_mmc: fix the assert on HLE bit

Merge pull request #1219 from antonio-nino-diaz-arm/an/mm-version ...

SPM: Fix version header definitions