Commit Graph

11 Commits

Author SHA1 Message Date
Supreeth Venkatesh da417eb8ed StandaloneMmPkg: Describe the declaration and definition files.
This patch describes the package declarations and definitions
for creating standalone management mode image with
core/foundation and drivers.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
2018-07-20 10:59:56 +08:00
Supreeth Venkatesh 275d4bd439 StandaloneMmPkg: Add CPU driver suitable for ARM Platforms.
This patch adds a simple CPU driver that exports the
EFI_MM_CONFIGURATION_PROTOCOL to allow registration of the Standalone
MM Foundation entry point. It preserves the existing notification
mechanism for the configuration protocol.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
2018-07-20 10:59:53 +08:00
Supreeth Venkatesh 184558d072 StandaloneMmPkg: Add an AArch64 specific entry point library.
The Standalone MM environment runs in S-EL0 in AArch64 on ARM Standard
Platforms and is initialised during the SEC phase. ARM Trusted firmware
in EL3 is responsible for initialising the architectural context for
S-EL0 and loading the Standalone MM image. The memory allocated to this
image is marked as RO+X. Heap memory is marked as RW+XN.

Certain actions have to be completed prior to executing the generic code
in the Standalone MM Core module. These are:

1. Memory permission attributes for each section of the Standalone MM
   Core module need to be changed prior to accessing any RW data.

2. A Hob list has to be created with information that allows the MM
   environment to initialise and dispatch drivers.

Furthermore, this module is responsible for handing over runtime MM
events to the Standalone MM CPU driver and returning control to ARM
Trusted Firmware upon event completion. Hence it needs to know the CPU
driver entry point.

This patch implements an entry point module that ARM Trusted Firmware
jumps to in S-EL0. It then performs the above actions before calling the
Standalone MM Foundation entry point and handling subsequent MM events.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
2018-07-20 10:59:40 +08:00
Supreeth Venkatesh 6b46d77243 StandaloneMmPkg/Core: Implementation of Standalone MM Core Module.
Management Mode (MM) is a generic term used to describe a secure
execution environment provided by the CPU and related silicon that is
entered when the CPU detects a MMI. For x86 systems, this can be
implemented with System Management Mode (SMM). For ARM systems, this can
be implemented with TrustZone (TZ).
A MMI can be a CPU instruction or interrupt. Upon detection of a MMI, a
CPU will jump to the MM Entry Point and save some portion of its state
(the "save state") such that execution can be resumed.
The MMI can be generated synchronously by software or asynchronously by
a hardware event. Each MMI source can be detected, cleared and disabled.
Some systems provide for special memory (Management Mode RAM or MMRAM)
which is set aside for software running in MM. Usually the MMRAM is
hidden during normal CPU execution, but this is not required. Usually,
after MMRAM is hidden it cannot be exposed until the next system reset.

The MM Core Interface Specification describes three pieces of the PI
Management Mode architecture:
1. MM Dispatch
   During DXE, the DXE Foundation works with the MM Foundation to
   schedule MM drivers for execution in the discovered firmware volumes.
2. MM Initialization
   MM related code opens MMRAM, creates the MMRAM memory map, and
   launches the MM Foundation, which provides the necessary services to
   launch MM-related drivers. Then, sometime before boot, MMRAM is
   closed and locked. This piece may be completed during the
   SEC, PEI or DXE phases.
3. MMI Management
   When an MMI generated, the MM environment is created and then the MMI

   sources are detected and MMI handlers called.

This patch implements the MM Core.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
2018-07-20 10:55:51 +08:00
Supreeth Venkatesh 0f4db639bb StandaloneMmPkg: MM driver entry point library.
This patch implements module entry point library for Standalone
management mode (MM) Drivers.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
2018-07-20 10:55:49 +08:00
Supreeth Venkatesh 70a51d7187 StandaloneMmPkg/HobLib: Add HOB Library for management mode.
The Standalone MM environment is initialized during the SEC phase on ARM
Standard Platforms. The MM Core driver implements an entry point module
which is architecture specific and runs prior to the generic core driver
code. The former creates a Hob list that the latter consumes. This
happens in the same phase.

This patch implements a Hob library that can be used by the entry point
module to produce a Hob list and by the core driver code to consume it.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
2018-07-20 10:55:47 +08:00
Supreeth Venkatesh 2c868eef73 StandaloneMmPkg/MemoryAllocationLib: Add MM memory allocation library.
This patch implements management mode memory allocation services.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
2018-07-20 10:55:46 +08:00
Supreeth Venkatesh 880086a2b5 StandaloneMmPkg/MemLib: Add Standalone MM instance of memory check library.
MM memory check library library implementation. This library consumes
MM_ACCESS_PROTOCOL to get MMRAM information. In order to use this
library instance, the platform should produce all MMRAM range via
MM_ACCESS_PROTOCOL, including the range for firmware (like MM Core
and MM driver) and/or specific dedicated hardware.

This patch provides services for MM Memory Operation.
The management mode Mem Library provides function for checking if buffer
is outside MMRAM and valid. It also provides functions for copy data
from MMRAM to non-MMRAM, from non-MMRAM to MMRAM,
from non-MMRAM to non-MMRAM, or set data in non-MMRAM.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
2018-07-20 10:55:28 +08:00
Supreeth Venkatesh e85162acb9 StandaloneMmPkg/FvLib: Add a common FV Library for management mode.
This patch implements a firmware volume library that can be used by the
Standalone management mode core module to parse the firmware volume.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
2018-07-20 10:55:26 +08:00
Supreeth Venkatesh 2cde4bbadc StandaloneMmPkg: Delete StandaloneMmPkg file.
This patch deletes "StandaloneMmPkg" which was created as a file
intially. This patch enables creation of "StandaloneMmPkg" as a folder.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
2018-07-20 10:55:25 +08:00
Achin Gupta 2b85beae0b Maintainers.txt: Add StandaloneMmPkg and maintainers
This patch adds maintainers, reviewer and directory for the
StandaloneMmPkg. This package will host an implementation of Standalone
Management Mode as specified in the Platform Initialization (PI)
Specification, Volume 4: Management Mode Core Interface.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Reviewed-by: Jiewen.yao@intel.com
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2018-03-21 01:13:40 +00:00