Commit Graph

37 Commits

Author SHA1 Message Date
Michael Kubacki 40b0b23ed3 ArmPlatformPkg: Apply uncrustify changes
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737

Apply uncrustify changes to .c/.h files in the ArmPlatformPkg package

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Andrew Fish <afish@apple.com>
2021-12-07 17:24:28 +00:00
Michael D Kinney 1d2482e1e3 ArmPlatformPkg: Change use of EFI_D_* to DEBUG_*
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3739

Update all use of EFI_D_* defines in DEBUG() macros to DEBUG_* defines.

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
2021-12-07 17:24:28 +00:00
Pierre Gondois 5a5440d0dc ArmPlatformPkg: Fix Ecc error 8001
This patch fixes the following Ecc reported error:
File header doesn't exist File header comment missing
the ""Copyright""

Even though a copyright is present in the header file,
the leading '*' char prevents the Ecc tool from detecting it.
According to the edk2 coding specifcation, section 5.2.3
"File Heading", there should not be leading '*' char.

Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
2021-04-15 19:24:14 +00:00
Antoine Cœur 16f3544ddd ArmPlatformPkg: Fix various typos
Fix various typos in ArmPlatformPkg.

Signed-off-by: Coeur <coeur@gmx.fr>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2019-07-04 12:20:52 +01:00
Michael D Kinney f4dfad05dd ArmPlatformPkg: Replace BSD License with BSD+Patent License
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2019-04-09 09:10:21 -07:00
Ard Biesheuvel 6bd42402f7 ArmPlatformPkg/MemoryInitPeim: take MAX_ALLOC_ADDRESS into account
Limit the PEI memory region so it will not extend beyond what we can
address architecturally when running with 4 KB pages.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2018-12-20 11:02:30 +01:00
chenc2 d3971e1742 ArmPlatformPkg: Removing ipf which is no longer supported from edk2.
Removing rules for Ipf sources file:
* Remove the source file which path with "ipf" and also listed in
  [Sources.IPF] section of INF file.
* Remove the source file which listed in [Components.IPF] section
  of DSC file and not listed in any other [Components] section.
* Remove the embedded Ipf code for MDE_CPU_IPF.

Removing rules for Inf file:
* Remove IPF from VALID_ARCHITECTURES comments.
* Remove DXE_SAL_DRIVER from LIBRARY_CLASS in [Defines] section.
* Remove the INF which only listed in [Components.IPF] section in DSC.
* Remove statements from [BuildOptions] that provide IPF specific flags.
* Remove any IPF sepcific sections.

Removing rules for Dec file:
* Remove [Includes.IPF] section from Dec.

Removing rules for Dsc file:
* Remove IPF from SUPPORTED_ARCHITECTURES in [Defines] section of DSC.
* Remove any IPF specific sections.
* Remove statements from [BuildOptions] that provide IPF specific flags.

Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chen A Chen <chen.a.chen@intel.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2018-06-29 16:19:36 +08:00
Ard Biesheuvel 44d2e8d7ca ArmPlatformPkg/MemoryInitPeiLib: reserve rather than remove FV memory
Instead of completely removing the memory occupied by the primary PrePi
FV from the memory map, thereby making it inaccessible to the OS, mark
it as boot services data. This will ensure that the memory is left
untouched by the firmware, but will release it to the OS when it calls
ExitBootServices().

Note that for reasons that are not entirely clear, this only works as
desired if the memory allocation HOB and the resource descriptor HOB
that describe the region are identical in offset and size, and so we
still need to iterate over the descriptors and split them up.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2018-02-28 16:10:58 +00:00
Ard Biesheuvel e7f0a829c9 ArmPlatformPkg/MemoryInitPeiLib: revert "don't reserve primary FV in memory"
Commit 8ae5fc1829 ("ArmPlatformPkg/MemoryInitPeiLib: don't reserve
primary FV in memory") deleted the code that removes the memory covering
the primary firmware volume from the memory map. The assumption was that
this is no longer necessary now that we no longer expose compression and
PE/COFF loader library code from the PrePi module to DXE core.

However, the FV is still declared, and so code may attempt to access it
anyway, which may cause unexpected results depending on whether the
memory has been reused for other purposes in the mean time. So revert
this change in preparation of dealing with this in a better way.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2018-02-28 16:10:49 +00:00
Meenakshi Aggarwal 8ae5fc1829 ArmPlatformPkg/MemoryInitPeiLib: don't reserve primary FV in memory
Now that PrePi no longer exposes its internal code via special HOBs,
we can remove the special handling of the primary FV, which needed to
be reserved so that DXE core could call into the PE/COFF and LZMA
libraries in the PrePi module.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Udit Kumar <udit.kumar@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
[ardb: updated commit log]
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2017-11-30 17:08:42 +00:00
Ard Biesheuvel ef120b7d63 ArmPlatformPkg: remove ArmPlatformInitializeSystemMemory
The function ArmPlatformInitializeSystemMemory() is defined by
ArmPlatformLib, but is only ever called when using the PrePeiCore
flavor of the startup code. Also, none of the remaining upstream
platforms actually implement anything in that function in the first
place. So let's just remove it altogether.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2017-11-30 16:08:33 +00:00
Ard Biesheuvel d74135cd0f ArmPlatformPkg: remove EFI_MEMORY_UC attribute from normal memory
On ARM systems, mapping normal memory as device memory may have unintended
side effects, given that unaligned accesses or loads and stores with special
semantics (e.g., load/store exclusive) may fault or may not work as expected.
Similarly, DC ZVA instructions are only supported on normal memory, not
device memory.

So remove the EFI_MEMORY_UC attribute that we set by default on system RAM.
If any region requires this attribute, it is up to the driver to set this
attribute, and to ensure that no offending operations are performed on it.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2016-09-08 10:35:33 +01:00
Ard Biesheuvel 5db1cce145 ArmPkg ArmVirtPkg MdeModulePkg: switch to separate ArmMmuLib
Switch all users of ArmLib that depend on the MMU routines to the new,
separate ArmMmuLib. This needs to occur in one go, since the MMU
routines are removed from ArmLib build at the same time, to prevent
conflicting symbols.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
2016-07-07 14:33:47 +02:00
Evan Lloyd fcea0fcb23 ArmPlatformPkg: Rectify file modes
Problems have been encountered because some of the source files have
execute permission set.  This can cause git to report them as changed
when they are checked out onto a file system with inherited permissions.
This has been seen using Cygwin, MinGW and PowerShell Git.

This patch makes no change to source file content, and only aims to
correct the file modes/permissions.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Evan Lloyd <evan.lloyd@arm.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19787 6f19259b-4bc3-4df7-8a09-765794883524
2016-02-02 11:42:31 +00:00
Ard Biesheuvel 78c8ec8a3f ArmPlatformPkg: ASSERT that PcdSystemMemoryBase does not exceed MAX_ADDRESS
For 32-bit ARM platforms, it is essential that system memory starts
below the 4 GB limit, since that is the only memory we can address
using the UEFI spec mandated 1:1 mapping. So assert that this is the
case.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18429 6f19259b-4bc3-4df7-8a09-765794883524
2015-09-09 15:30:37 +00:00
Ard Biesheuvel 984ec7588d ArmPlatformPkg/MemoryInitPeim: handle memory above 4 GB on 32-bit ARM
Make sure that the PEI memory region is carved out of memory that is
32-bit addressable, by taking MAX_ADDRESS into account (which is
defined as '4 GB - 1' on ARM)

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18426 6f19259b-4bc3-4df7-8a09-765794883524
2015-09-09 14:48:25 +00:00
Olivier Martin 40a3f38f67 ArmPlatformPkg/MemoryInitPei: Check if the main System Memory resource has been declared
The PlatformLib could have declared the resource hob for
the main system memory region.
This change would prevent to get this system memory resource
to be declared twice.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <Olivier.Martin@arm.com>
Reviewed-by: Ronald Cron <Ronald.Cron@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17834 6f19259b-4bc3-4df7-8a09-765794883524
2015-07-06 16:55:29 +00:00
Ard Biesheuvel d94a48c71a ArmPlatformPkg: do not fulfil MemoryInitPeiLib dependency directly via .c file
MemoryInitPeim short-circuits its MemoryInitPeiLib dependency by including
the .c file directly. This prevents us from having a special implementation
for ArmVirtualizationPkg that performs additional cache maintenance before
enabling the MMU. So instead, make it depend on the library class.

Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17175 6f19259b-4bc3-4df7-8a09-765794883524
2015-04-14 11:52:55 +00:00
Laszlo Ersek 3d5cf3726e ArmPlatformPkg: PEIM startup is not an error
"MemoryInitPeim.c" and "PlatformPeim.c" log startup messages on the
EFI_D_ERROR level. This clutters a strictly EFI_D_ERROR level log
needlessly; change the log bitmask of these messages to EFI_D_LOAD |
EFI_D_INFO.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@arm.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16984 6f19259b-4bc3-4df7-8a09-765794883524
2015-03-02 16:19:32 +00:00
Leif Lindholm bb5420bb2b ArmPlatformPkg: Increase more ARM address Pcd entries to 64-bit.
Some AArch64 platforms have RAM and flash devices >4GB.
Update some additional Pcd entries to 64-bit, and change
the corresponding PcdGet32 calls to PcdGet64.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16325 6f19259b-4bc3-4df7-8a09-765794883524
2014-11-11 00:43:03 +00:00
Ard Biesheuvel f8d7d6e151 ArmPkg,ArmPlatformPkg: Allow dynamic PCDs for memory base and size
This changes the definition and a bunch of references to
gArmTokenSpaceGuid.PcdSystemMemoryBase and
gArmTokenSpaceGuid.PcdSystemMemorySize so they can be declared as dynamic PCDs
by the platform. Also, move the non-SEC call to
ArmPlatformInitializeSystemMemory() earlier, so a platform has a chance to set
these PCDs before they are first referenced.

The purpose is allowing dynamically instantiated virtual machines to declare
the system memory by passing a device tree.

Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16079 6f19259b-4bc3-4df7-8a09-765794883524
2014-09-09 16:11:30 +00:00
Ronald Cron 3402aac7d9 ARM Packages: Removed trailing spaces
Trailing spaces create issue/warning when generating/applying patches.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Reviewed-By: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15833 6f19259b-4bc3-4df7-8a09-765794883524
2014-08-19 13:29:52 +00:00
Olivier Martin c357fd6a1f ArmPkg/ArmPkg.dec: Redefined PcdSystemMemory(Base|Size) as UINT64
The System Memory region might be out of the 32-bit memory space.

This change has been validated on the FVP AArch64 model using 4GB
of DRAM at 0x8_0000_0000:

-  # System Memory (2GB)
-  gArmTokenSpaceGuid.PcdSystemMemoryBase|0x80000000
-  gArmTokenSpaceGuid.PcdSystemMemorySize|0x80000000
+  # System Memory (4GB)
+  gArmTokenSpaceGuid.PcdSystemMemoryBase|0x800000000
+  gArmTokenSpaceGuid.PcdSystemMemorySize|0x100000000

EFI Shell and Linux kernel boot successfully.

Note: This change has not been validated on AArch32. I expect some
early assembly code to not work.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>




git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15093 6f19259b-4bc3-4df7-8a09-765794883524
2014-01-10 11:27:31 +00:00
Garrett Kirkendall 2a414cd3c3 ArmPlatformPkg/MemoryInitPei: AARCH64 fix memory address calculations
At least for AARCH64 currently, SystemMemoryTop and FdTop can overflow
while adding the 32-bit PCDs together.  The resulting value loses the
upper 32-bits.  Cast each of the values to EFI_PHYSICAL_ADDRESS size
before doing the addition to prevent erroneous overflow.  There is currently
no 32-bit platform in EDKII open source that will overflow and this change
would not fix that problem anyway.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Garrett Kirkendall <garrett.kirkendall@amd.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14675 6f19259b-4bc3-4df7-8a09-765794883524
2013-09-16 09:29:52 +00:00
Olivier Martin 6f050ad6bf ArmPkg: Made ArmConfigureMmu() returns a status code
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14445 6f19259b-4bc3-4df7-8a09-765794883524
2013-06-27 18:16:06 +00:00
oliviermartin 1e57a46299 ARM Packages: Fixed line endings
This large code change only modifies the line endings to be CRLF to be
compliant with the EDK2 coding convention document.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14088 6f19259b-4bc3-4df7-8a09-765794883524
2013-01-25 11:28:06 +00:00
oliviermartin b34e4db382 ARM Packages: Minor typo, mispellings and coding style changes
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13752 6f19259b-4bc3-4df7-8a09-765794883524
2012-09-27 13:39:40 +00:00
oliviermartin bd6b97994a ArmPkg/ArmLib: Clean ArmV7Lib
- Move the non specific ArmV7 functions to ArmLib.
- Clean the ARM Platform common components to not depend on ArmV7 if not required



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12453 6f19259b-4bc3-4df7-8a09-765794883524
2011-09-27 16:31:20 +00:00
oliviermartin f92b93c9a3 ARM Packages: Rename PcdNormal* into Pcd* PCDs
The denomination 'Normal' was used to make reference to the 'Normal'
or 'Non Secure' or 'Non Trusted' world.
To avoid confusion, this prefix has been removed from PCDs to define
the normal world.

The PCDs explicitely related to the Secure/Trusted World continue to
have the 'Sec' prefix.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12416 6f19259b-4bc3-4df7-8a09-765794883524
2011-09-22 23:06:31 +00:00
oliviermartin d269095b71 ArmPlatformPkg: Change the memory model for the ARM Platform components
In the former memory model, the UEFI firmware was expected to be located
at the top of the system memory. Stacks & Pi memory regions were set below
the firmware.
On some platform, the UEFI firmware could be shadowed by the ROM firmware
(case of the BeagleBoard) and in some cases the firmware is copied at the
beginning of the system memory.

With this new memory model, stack and Pi/DXE memory regions are set at the
top of the system memory wherever the UEFI firmware is located in the memory
map.
Because DXE core does not support shadowed firmwares, the system memory covered
by the UEFI firmware is marked as 'Non Present' to avoid to be overlapped by
DXE allocations.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11992 6f19259b-4bc3-4df7-8a09-765794883524
2011-07-06 16:27:21 +00:00
oliviermartin 5cc45b70c3 ArmPkg: Move ARM Platform drivers from ArmPkg/Drivers/ to ArmPlatformPkg/Drivers/
The idea is to keep ArmPkg responsible for the ARM architectural modules and ArmPlatformPkg
the ARM development platform packages (with their respective drivers).


ArmPlatformPkg: Reduce driver dependency on ArmPlatform.h

- Move some driver definitions from C-Macro to PCD values
- Unify PCD driver namespace




git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11956 6f19259b-4bc3-4df7-8a09-765794883524
2011-07-01 15:30:01 +00:00
oliviermartin bf72cf3381 ArmPlatformPkg: Move PcdStandalone from Feature PCD to Fixed PCD
Feature PCDs cannot be used in assembly files.
The PcdStandalone PCD is needed in one of the assembly file of the
ArmPlatformPkg/PrePi module.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11952 6f19259b-4bc3-4df7-8a09-765794883524
2011-07-01 14:21:12 +00:00
oliviermartin 3a6eaccf2f ArmPlatformPkg/MemoryInitPei: Generate a library from the PEI Module
In the aim to reuse the memory init features in a PrePi module (use to
skip the PEI Core), this module has been divided into two files:
- MemoryInitPeiLib: declare the memory HOBs
- MemoryIniPeim: PEIM warpper for the library



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11950 6f19259b-4bc3-4df7-8a09-765794883524
2011-07-01 11:41:53 +00:00
oliviermartin e862cd50c6 ArmPkg: Fix warnings raised by ARMGCC
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11829 6f19259b-4bc3-4df7-8a09-765794883524
2011-06-15 19:53:15 +00:00
oliviermartin f598bf1266 ArmPlatformPkg: Code cleaning
- Fix coding style to follow EDK2 coding convention
- Remove deprecated function
- Remove unused PCDs



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11808 6f19259b-4bc3-4df7-8a09-765794883524
2011-06-11 12:10:19 +00:00
oliviermartin 964680c124 ArmPlatformPkg/ArmPlatformLib: Move the UEFI memory partionning to MemoryInitPei
Formerly, each platform was responsible to declare the location of its UEFI memory
region (used by PEI and DXE Foundations).
The ArmPlatformLib was also declaring every region of its partitionned system memory
with a System Resource HOB.
    
In this new model, the MemoryInit expects the system memory to be declared with the
PCDs gArmTokenSpaceGuid.PcdSystemMemoryBase/Size.
These PCDs declare the largest continuous DRAM region. Additional regions can be
declared with the ArmPLatformLib function ArmPlatformGetAdditionalSystemMemory().
    
Now, it is the PEIM that partitions the system memory for every platform. It installs
a region of the size PcdSystemMemoryUefiRegionSize (default 128MB) for the PEI permanent
memory at the top of the DRAM region.
And a region of gArmPlatformTokenSpaceGuid.PcdSystemMemoryFixRegionSize (default 128MB)
is declared at the base of the system memory. This region is used for the allocation that
requires fixed address or have some constraints on their locations.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11481 6f19259b-4bc3-4df7-8a09-765794883524
2011-03-31 12:21:41 +00:00
andrewfish 1d5d0ae92d Add ArmPlatformPkg from ARM Ltd. patch.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11291 6f19259b-4bc3-4df7-8a09-765794883524
2011-02-01 05:41:42 +00:00