1. 07 Sep, 2018 1 commit
  2. 04 Sep, 2018 1 commit
  3. 06 Aug, 2018 1 commit
  4. 20 Jul, 2018 1 commit
  5. 21 Jun, 2018 1 commit
  6. 19 Jun, 2018 1 commit
    • Antonio Nino Diaz's avatar
      plat/arm: Migrate AArch64 port to the multi console driver · 88a0523e
      Antonio Nino Diaz authored
      
      
      The old API is deprecated and will eventually be removed.
      
      Arm platforms now use the multi console driver for boot and runtime
      consoles. However, the crash console uses the direct console API because
      it doesn't need any memory access to work. This makes it more robust
      during crashes.
      
      The AArch32 port of the Trusted Firmware doesn't support this new API
      yet, so it is only enabled in AArch64 builds. Because of this, the
      common code must maintain compatibility with both systems. SP_MIN
      doesn't have to be updated because it's only used in AArch32 builds.
      The TSP is only used in AArch64, so it only needs to support the new
      API without keeping support for the old one.
      
      Special care must be taken because of PSCI_SYSTEM_SUSPEND. In Juno, this
      causes the UARTs to reset (except for the one used by the TSP). This
      means that they must be unregistered when suspending and re-registered
      when resuming. This wasn't a problem with the old driver because it just
      restarted the UART, and there were no problems associated with
      registering and unregistering consoles.
      
      The size reserved for BL2 has been increased.
      
      Change-Id: Icefd117dd1eb9c498921181a21318c2d2435c441
      Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      88a0523e
  7. 18 Jun, 2018 1 commit
  8. 07 Jun, 2018 1 commit
    • Soby Mathew's avatar
      ARM platforms: Move BL31 below BL2 to enable BL2 overlay · c099cd39
      Soby Mathew authored
      
      
      The patch changes the layout of BL images in memory to enable
      more efficient use of available space. Previously BL31 was loaded
      with the expectation that BL2 memory would be reclaimed by BL32
      loaded in SRAM. But with increasing memory requirements in the
      firmware, we can no longer fit BL32 in SRAM anymore which means the
      BL2 memory is not reclaimed by any runtime image. Positioning BL2
      below BL1-RW and above BL31 means that the BL31 NOBITS can be
      overlaid on BL2 and BL1-RW.
      
      This patch also propogates the same memory layout to BL32 for AArch32
      mode. The reset addresses for the following configurations are also
      changed :
         * When RESET_TO_SP_MIN=1 for BL32 in AArch32 mode
         * When BL2_AT_EL3=1 for BL2
      
      The restriction on BL31 to be only in DRAM when SPM is enabled
      is now removed with this change. The update to the firmware design
      guide for the BL memory layout is done in the following patch.
      
      Change-Id: Icca438e257abe3e4f5a8215f945b9c3f9fbf29c9
      Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      c099cd39
  9. 24 May, 2018 1 commit
    • Antonio Nino Diaz's avatar
      plat/arm: SPM: Force BL31 to DRAM when SPM is used · e829a379
      Antonio Nino Diaz authored
      
      
      BL31 is running out of space, and the use-case of SPM doesn't require it
      to be in SRAM. To prevent BL31 from running out of space in the future,
      move BL31 to DRAM if SPM is enabled.
      
      Secure Partition Manager design document updated to reflect the changes.
      
      Increased the size of the stack of BL31 for builds with SPM.
      
      The translation tables used by SPM in Arm platforms have been moved back
      to the 'xlat_tables' region instead of 'arm_el3_tzc_dram'. Everything is
      in DRAM now, so it doesn't make sense to treat them in a different way.
      
      Change-Id: Ia6136c8e108b8da9edd90e9d72763dada5e5e5dc
      Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      e829a379
  10. 21 May, 2018 1 commit
    • Soby Mathew's avatar
      FVP: Add dummy configs for BL31, BL32 and BL33 · 1d71ba14
      Soby Mathew authored
      
      
      This patch adds soc_fw_config, tos_fw_config and nt_fw_config to the FVP.
      The config files are placeholders and do not have any useful bindings
      defined. The tos_fw_config is packaged in FIP and loaded by BL2 only
      if SPD=tspd. The load address of these configs are specified in tb_fw_config
      via new bindings defined for these configs. Currently, in FVP, the
      soc_fw_config and tos_fw_config is loaded in the page between BL2_BASE
      and ARM_SHARED_RAM. This memory was typically used for BL32 when
      ARM_TSP_RAM_LOCATION=tsram but since we cannot fit BL32 in that
      space anymore, it should be safe to use this memory for these configs.
      There is also a runtime check in arm_bl2_dyn_cfg_init() which ensures
      that this overlap doesn't happen.
      
      The previous arm_dyn_get_hwconfig_info() is modified to accept configs
      other than hw_config and hence renamed to arm_dyn_get_config_load_info().
      The patch also corrects the definition of ARM_TB_FW_CONFIG_LIMIT to be
      BL2_BASE.
      
      Change-Id: I03a137d9fa1f92c862c254be808b8330cfd17a5a
      Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      1d71ba14
  11. 15 May, 2018 1 commit
  12. 11 May, 2018 1 commit
    • Antonio Nino Diaz's avatar
      plat/arm: Migrate AArch64 port to the multi console driver · 2f18aa1f
      Antonio Nino Diaz authored
      
      
      The old API is deprecated and will eventually be removed.
      
      Arm platforms now use the multi console driver for boot and runtime
      consoles. However, the crash console uses the direct console API because
      it doesn't need any memory access to work. This makes it more robust
      during crashes.
      
      The AArch32 port of the Trusted Firmware doesn't support this new API
      yet, so it is only enabled in AArch64 builds. Because of this, the
      common code must maintain compatibility with both systems. SP_MIN
      doesn't have to be updated because it's only used in AArch32 builds.
      The TSP is only used in AArch64, so it only needs to support the new
      API without keeping support for the old one.
      
      Special care must be taken because of PSCI_SYSTEM_SUSPEND. In Juno, this
      causes the UARTs to reset (except for the one used by the TSP). This
      means that they must be unregistered when suspending and re-registered
      when resuming. This wasn't a problem with the old driver because it just
      restarted the UART, and there were no problems associated with
      registering and unregistering consoles.
      
      The size of BL31 has been increased in builds with SPM.
      
      Change-Id: Icefd117dd1eb9c498921181a21318c2d2435c441
      Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      2f18aa1f
  13. 01 May, 2018 1 commit
    • Roberto Vargas's avatar
      ARM platforms: Demonstrate mem_protect from el3_runtime · 638b034c
      Roberto Vargas authored
      
      
      Previously mem_protect used to be only supported from BL2. This is not
      helpful in the case when ARM TF-A BL2 is not used. This patch demonstrates
      mem_protect from el3_runtime firmware on ARM Platforms specifically
      when RESET_TO_BL31 or RESET_TO_SP_MIN flag is set as BL2 may be absent
      in these cases. The Non secure DRAM is dynamically mapped into EL3 mmap
      tables temporarily and then the protected regions are then cleared. This
      avoids the need to map the non secure DRAM permanently to BL31/sp_min.
      
      The stack size is also increased, because DYNAMIC_XLAT_TABLES require
      a bigger stack.
      
      Change-Id: Ia44c594192ed5c5adc596c0cff2c7cc18c001fde
      Signed-off-by: default avatarRoberto Vargas <roberto.vargas@arm.com>
      638b034c
  14. 26 Feb, 2018 1 commit
    • Soby Mathew's avatar
      ARM Platforms: Load HW_CONFIG in BL2 · cab0b5b0
      Soby Mathew authored
      
      
      The patch adds the necessary changes to load HW_CONFIG in BL2 for
      ARM Platforms :
      
      1. The load address of HW_CONFIG is specified via the `hw_config_addr`
      property in TB_FW_CONFIG is loaded by BL1. The `hw_config_max_size`
      property defines the maximum size to be expected for the HW_CONFIG.
      The `arm_dyn_cfg_helpers.c` and corresponding header implements
      utility functions to parse these DT properties defined.
      The `arm_dyn_cfg.c` implements wrappers to these helpers to enable
      them to be invoked from ARM platform layer.
      
      2. `HW_CONFIG` is added to the `bl2_mem_params_descs[]` array which is
      the list of images to be loaded by BL2.
      
      3. The `libfdt` sources are now included when BL2 is built
      
      4. A new helper `populate_next_bl_params_config()` is introduced in
      desc_image_load.c to populate the subsequent executable BL images
      with the `hw_config` and the corresponding `fw_config` if available.
      The `plat_get_next_bl_params()` API for ARM platforms is modified to
      invoke this new helper.
      
      5. The implementation of `bl2_early_platform_setup2()` is modified to
      consider `arg0` as well in addition to `arg1` passed from BL1.
      
      6. Bump up the BL2 size for Juno to accommodate the inclusion of libfdt.
      
      Change-Id: I80f1554adec41753e0d179a5237364f04fe13a3f
      Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      cab0b5b0
  15. 11 Jan, 2018 1 commit
  16. 03 Jan, 2018 1 commit
  17. 06 Dec, 2017 1 commit
    • Antonio Nino Diaz's avatar
      SPM: Move S-EL1/S-EL0 xlat tables to TZC DRAM · 45d640f0
      Antonio Nino Diaz authored
      
      
      A new platform define, `PLAT_SP_IMAGE_XLAT_SECTION_NAME`, has been
      introduced to select the section where the translation tables used by
      the S-EL1/S-EL0 are placed.
      
      This define has been used to move the translation tables to DRAM secured
      by TrustZone.
      
      Most of the extra needed space in BL31 when SPM is enabled is due to the
      large size of the translation tables. By moving them to this memory
      region we can save 44 KiB.
      
      A new argument has been added to REGISTER_XLAT_CONTEXT2() to specify the
      region where the translation tables have to be placed by the linker.
      
      Change-Id: Ia81709b4227cb8c92601f0caf258f624c0467719
      Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      45d640f0
  18. 29 Nov, 2017 1 commit
    • Soby Mathew's avatar
      ARM platforms: Fixup AArch32 builds · 5744e874
      Soby Mathew authored
      
      
      This patch fixes a couple of issues for AArch32 builds on ARM reference
      platforms :
      
      1. The arm_def.h previously defined the same BL32_BASE value for AArch64 and
         AArch32 build. Since BL31 is not present in AArch32 mode, this meant that
         the BL31 memory is empty when built for AArch32. Hence this patch allocates
         BL32 to the memory region occupied by BL31 for AArch32 builds.
      
         As a side-effect of this change, the ARM_TSP_RAM_LOCATION macro cannot
         be used to control the load address of BL32 in AArch32 mode which was
         never the intention of the macro anyway.
      
      2. A static assert is added to sp_min linker script to check that the progbits
         are within the bounds expected when overlaid with other images.
      
      3. Fix specifying `SPD` when building Juno for AArch32 mode. Due to the quirks
         involved when building Juno for AArch32 mode, the build option SPD needed to
         specifed. This patch corrects this and also updates the documentation in the
         user-guide.
      
      4. Exclude BL31 from the build and FIP when building Juno for AArch32 mode. As
         a result the previous assumption that BL31 must be always present is removed
         and the certificates for BL31 is only generated if `NEED_BL31` is defined.
      
      Change-Id: I1c39bbc0abd2be8fbe9f2dea2e9cb4e3e3e436a8
      Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      5744e874
  19. 09 Nov, 2017 1 commit
  20. 25 Oct, 2017 1 commit
  21. 11 Oct, 2017 1 commit
    • Soby Mathew's avatar
      ARM platforms: enable GICv3 state save/restore · e35a3fb5
      Soby Mathew authored
      
      
      Provides GICv3 save/restore feature to arm_system_pwr_domain_resume and
      arm_system_pwr_domain_save functions.
      
      Introduce FVP PSCI power level 3 (System level) support. This is solely
      done to provide example code on how to use the GICv3 save and restore
      helpers.
      
      Also make CSS GICv3 platforms power off the Redistributor on SYSTEM
      SUSPEND as its state is saved and restored.
      
      Change-Id: I0d852f3af8824edee1a17c085cf593ddd33a4e77
      Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      Co-Authored-by: default avatarDouglas Raillard <douglas.raillard@arm.com>
      e35a3fb5
  22. 06 Oct, 2017 1 commit
    • David Cunado's avatar
      Increase PLAT_ARM_MMAP_ENTRIES and MAX_XLAT_TABLES · 2e421ad2
      David Cunado authored
      
      
      The MEM_PROTECT support adds a MMAP region for DRAM2, which when
      building with TBBR support and OP-TEE tsp requires an additional
      entry in the MMAP region array in BL2 - PLAT_ARM_MMAP_ENTRIES is
      increased.
      
      The MEM_PROTECT support also adds a new region in BL31, and when
      BL31 is placed in DRAM, the memory mappings require an additional
      translation table - MAX_XLAT_TABLES is increased.
      
      Change-Id: I0b76260da817dcfd0b8f73a7193c36efda977625
      Signed-off-by: default avatarDavid Cunado <david.cunado@arm.com>
      2e421ad2
  23. 25 Sep, 2017 1 commit
    • Roberto Vargas's avatar
      mem_protect: Add mem_protect support in Juno and FVP for DRAM1 · f145403c
      Roberto Vargas authored
      
      
      mem_protect needs some kind of non-volatile memory because it has
      to remember its state across reset and power down events.
      The most suitable electronic part for this feature is a NVRAM
      which should be only accesible from the secure world. Juno and
      FVP lack such hardware and for this reason the MEM_PROTECT
      functionality is implemented with Flash EEPROM memory on both
      boards, even though this memory is accesible from the non-secure
      world. This is done only to show a full implementation of
      these PSCI features, but an actual system shouldn't use a
      non-secure NVRAM to implement it.
      
      The EL3 runtime software will write the mem_protect flag and BL2
      will read and clear the memory ranges if enabled. It is done in
      BL2 because it reduces the time that TF needs access to the full
      non-secure memory.
      
      The memory layout of both boards is defined using macros which
      take different values in Juno and FVP platforms. Generic platform
      helpers are added that use the platform specific macros to generate
      a mem_region_t that is valid for the platform.
      
      Change-Id: I2c6818ac091a2966fa07a52c5ddf8f6fde4941e9
      Signed-off-by: default avatarRoberto Vargas <roberto.vargas@arm.com>
      f145403c
  24. 22 Sep, 2017 1 commit
  25. 22 Aug, 2017 2 commits
  26. 20 Jun, 2017 1 commit
  27. 23 May, 2017 1 commit
    • Masahiro Yamada's avatar
      cert: move platform_oid.h to include/tools_share for all platforms · bb41eb7a
      Masahiro Yamada authored
      
      
      Platforms aligned with TBBR are supposed to use their own OIDs, but
      defining the same macros with different OIDs does not provide any
      value (at least technically).
      
      For easier use of TBBR, this commit allows platforms to reuse the OIDs
      obtained by ARM Ltd.  This will be useful for non-ARM vendors that
      do not need their own extension fields in their certificate files.
      
      The OIDs of ARM Ltd. have been moved to include/tools_share/tbbr_oid.h
      
      Platforms can include <tbbr_oid.h> instead of <platform_oid.h> by
      defining USE_TBBR_DEFS as 1.  USE_TBBR_DEFS is 0 by default to keep the
      backward compatibility.
      
      For clarification, I inserted a blank line between headers from the
      include/ directory (#include <...>) and ones from a local directory
      (#include "..." ).
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      bb41eb7a
  28. 03 May, 2017 1 commit
  29. 29 Apr, 2017 1 commit
    • Scott Branden's avatar
      Move defines in utils.h to utils_def.h to fix shared header compile issues · 53d9c9c8
      Scott Branden authored
      
      
      utils.h is included in various header files for the defines in it.
      Some of the other header files only contain defines.  This allows the
      header files to be shared between host and target builds for shared defines.
      
      Recently types.h has been included in utils.h as well as some function
      prototypes.
      
      Because of the inclusion of types.h conflicts exist building host tools
      abd these header files now.  To solve this problem,
      move the defines to utils_def.h and have this included by utils.h and
      change header files to only include utils_def.h and not pick up the new
      types.h being introduced.
      
      Fixes ARM-software/tf-issues#461
      Signed-off-by: default avatarScott Branden <scott.branden@broadcom.com>
      
      Remove utils_def.h from utils.h
      
      This patch removes utils_def.h from utils.h as it is not required.
      And also makes a minor change to ensure Juno platform compiles.
      
      Change-Id: I10cf1fb51e44a8fa6dcec02980354eb9ecc9fa29
      53d9c9c8
  30. 19 Apr, 2017 1 commit
    • Antonio Nino Diaz's avatar
      ARM platforms: Add option to use xlat tables lib v1 · 3b211ff5
      Antonio Nino Diaz authored
      
      
      ARM platforms have migrated to the translation tables library v2.
      However, for testing purposes, it can be useful to temporarily switch
      back to the old version.
      
      This patch introduces the option `ARM_XLAT_TABLES_LIB_V1`, that switches
      to v1 of the library when is set to 1. By default, it is 0, so that ARM
      platforms use the new version unless specifically stated.
      
      Updated User Guide.
      
      Change-Id: I53d3c8dd97706f6af9c6fca0364a88ef341efd31
      Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      3b211ff5
  31. 03 Apr, 2017 1 commit
    • Douglas Raillard's avatar
      Fix ARM_BL31_IN_DRAM build · f9608bc8
      Douglas Raillard authored
      
      
      Some header files using the ULL() macro were not directly including
      utils.h where the macro definition resides. As a consequence, a linker
      script with values using this macro did not see the macro definition
      and kept the "ULL(<value>)" call in the preprocessed file, which lead to
      link error.
      
      Files using ULL() macro now include utils.h directly.
      
      Change-Id: I433a7f36bd21a156c20e69bc2a2bb406140ebdf9
      Signed-off-by: default avatarDouglas Raillard <douglas.raillard@arm.com>
      f9608bc8
  32. 08 Mar, 2017 2 commits
    • Antonio Nino Diaz's avatar
      ARM platforms: Enable xlat tables lib v2 · bf75a371
      Antonio Nino Diaz authored
      
      
      Modify ARM common makefile to use version 2 of the translation tables
      library and include the new header in C files.
      
      Simplify header dependencies related to this library to simplify the
      change.
      
      The following table contains information about the size increase in
      bytes for BL1 after applying this patch. The code has been compiled for
      different configurations of FVP in AArch64 mode with compiler GCC 4.9.3
      20150413. The sizes have been calculated with the output of `nm` by
      adding the size of all regions and comparing the total size before and
      after the change. They are sumarized in the table below:
      
                                     text   bss   data  total
              Release                +660   -20    +88   +728
              Debug                  +740   -20   +242   +962
              Debug (LOG_LEVEL=50)  +1120   -20   +317  +1417
      
      Change-Id: I539e307f158ab71e3a8b771640001fc1bf431b29
      Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      bf75a371
    • Antonio Nino Diaz's avatar
      Add dynamic region support to xlat tables lib v2 · 0b64f4ef
      Antonio Nino Diaz authored
      
      
      Added APIs to add and remove regions to the translation tables
      dynamically while the MMU is enabled. Only static regions are allowed
      to overlap other static ones (for backwards compatibility).
      
      A new private attribute (MT_DYNAMIC / MT_STATIC) has been added to
      flag each region as such.
      
      The dynamic mapping functionality can be enabled or disabled when
      compiling by setting the build option PLAT_XLAT_TABLES_DYNAMIC to 1
      or 0. This can be done per-image.
      
      TLB maintenance code during dynamic table mapping and unmapping has
      also been added.
      
      Fixes ARM-software/tf-issues#310
      
      Change-Id: I19e8992005c4292297a382824394490c5387aa3b
      Signed-off-by: default avatarAntonio Nino Diaz <antonio.ninodiaz@arm.com>
      0b64f4ef
  33. 26 Jan, 2017 1 commit
    • David Cunado's avatar
      Resolve build errors flagged by GCC 6.2 · 9edac047
      David Cunado authored
      
      
      With GCC 6.2 compiler, more C undefined behaviour is being flagged as
      warnings, which result in build errors in ARM TF build.
      
      The specific issue that this patch resolves is the use of (1 << 31),
      which is predominantly used in case statements, where 1 is represented
      as a signed int. When shifted to msb the behaviour is undefined.
      
      The resolution is to specify 1 as an unsigned int using a convenience
      macro ULL(). A duplicate macro MAKE_ULL() is replaced.
      
      Fixes ARM-software/tf-issues#438
      
      Change-Id: I08e3053bbcf4c022ee2be33a75bd0056da4073e1
      Signed-off-by: default avatarDavid Cunado <david.cunado@arm.com>
      9edac047
  34. 23 Jan, 2017 1 commit
    • Masahiro Yamada's avatar
      Use #ifdef for IMAGE_BL* instead of #if · 3d8256b2
      Masahiro Yamada authored
      
      
      One nasty part of ATF is some of boolean macros are always defined
      as 1 or 0, and the rest of them are only defined under certain
      conditions.
      
      For the former group, "#if FOO" or "#if !FOO" must be used because
      "#ifdef FOO" is always true.  (Options passed by $(call add_define,)
      are the cases.)
      
      For the latter, "#ifdef FOO" or "#ifndef FOO" should be used because
      checking the value of an undefined macro is strange.
      
      Here, IMAGE_BL* is handled by make_helpers/build_macro.mk like
      follows:
      
        $(eval IMAGE := IMAGE_BL$(call uppercase,$(3)))
      
        $(OBJ): $(2)
                @echo "  CC      $$<"
                $$(Q)$$(CC) $$(TF_CFLAGS) $$(CFLAGS) -D$(IMAGE) -c $$< -o $$@
      
      This means, IMAGE_BL* is defined when building the corresponding
      image, but *undefined* for the other images.
      
      So, IMAGE_BL* belongs to the latter group where we should use #ifdef
      or #ifndef.
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      3d8256b2
  35. 25 Jul, 2016 1 commit
    • Antonio Nino Diaz's avatar
      ARM platforms: Define common image sizes · 0289970d
      Antonio Nino Diaz authored
      Compile option `ARM_BOARD_OPTIMISE_MMAP` has been renamed to
      `ARM_BOARD_OPTIMISE_MEM` because it now applies not only to defines
      related to the translation tables but to the image size as well.
      
      The defines `PLAT_ARM_MAX_BL1_RW_SIZE`, `PLAT_ARM_MAX_BL2_SIZE` and
      `PLAT_ARM_MAX_BL31_SIZE` have been moved to the file board_arm_def.h.
      This way, ARM platforms no longer have to set their own values if
      `ARM_BOARD_OPTIMISE_MEM=0` and they can specify optimized values
      otherwise. The common sizes have been set to the highest values used
      for any of the current build configurations.
      
      This is needed because in some build configurations some images are
      running out of space. This way there is a common set of values known
      to work for all of them and it can be optimized for each particular
      platform if needed.
      
      The space reserved for BL2 when `TRUSTED_BOARD_BOOT=0` has been
      increased. This is needed because when memory optimisations are
      disabled the values for Juno of `PLAT_ARM_MMAP_ENTRIES` and
      `MAX_XLAT_TABLES` are higher. If in this situation the code is
      compiled in debug mode and with "-O0", the code won't fit.
      
      Change-Id: I70a3d8d3a0b0cad1d6b602c01a7ea334776e718e
      0289970d
  36. 08 Jul, 2016 1 commit
    • Sandrine Bailleux's avatar
      ARM CSS platforms: Map flash as execute-never by default · 91fad655
      Sandrine Bailleux authored
      On ARM CSS platforms, the whole flash used to be mapped as executable.
      This is not required, given that the flash is used to store the BL1
      and FIP images and:
      
       - The FIP is not executed in place, its images are copied to RAM
         and executed from there.
      
       - BL1 is executed in place from flash but only its code needs to be
         mapped as executable and platform code takes care of re-mapping
         BL1's read-only section as executable.
      
      Therefore, this patch now maps the flash as non-executable by default
      on these platforms. This increases security by restricting the
      executable region to what is strictly needed.
      
      This patch also adds some comments to clarify the memory mapping
      attributes on these platforms.
      
      Change-Id: I4db3c145508bea1f43fbe0f6dcd551e1aec1ecd3
      91fad655
  37. 31 Mar, 2016 1 commit
    • David Wang's avatar
      Add support to load BL31 in DRAM · 4518dd9a
      David Wang authored
      This patch adds an option to the ARM common platforms to load BL31 in the
      TZC secured DRAM instead of the default secure SRAM.
      
      To enable this feature, set `ARM_BL31_IN_DRAM` to 1 in build options.
      If TSP is present, then setting this option also sets the TSP location
      to DRAM and ignores the `ARM_TSP_RAM_LOCATION` build flag.
      
      To use this feature, BL2 platform code must map in the DRAM used by
      BL31. The macro ARM_MAP_BL31_SEC_DRAM is provided for this purpose.
      Currently, only the FVP BL2 platform code maps in this DRAM.
      
      Change-Id: If5f7cc9deb569cfe68353a174d4caa48acd78d67
      4518dd9a
  38. 22 Feb, 2016 1 commit
    • Yatharth Kochar's avatar
      Fix the inconsistencies in bl1_tbbr_image_descs[] · 843ddee4
      Yatharth Kochar authored
      This patch fixes inconsistencies in bl1_tbbr_image_descs[]
      and miscellaneous fixes in Firmware Update code.
      
      Following are the changes:
      * As part of the original FWU changes, a `copied_size`
        field was added to `image_info_t`. This was a subtle binary
        compatibility break because it changed the size of the
        `bl31_params_t` struct, which could cause problems if
        somebody used different versions of BL2 or BL31, one with
        the old `image_info_t` and one with the new version.
        This patch put the `copied_size` within the `image_desc_t`.
      * EXECUTABLE flag is now stored in `ep_info.h.attr` in place
        of `image_info.h.attr`, associating it to an entrypoint.
      * The `image_info.image_base` is only relevant for secure
        images that are copied from non-secure memory into secure
        memory. This patch removes initializing `image_base` for
        non secure images in the bl1_tbbr_image_descs[].
      * A new macro `SET_STATIC_PARAM_HEAD` is added for populating
        bl1_tbbr_image_descs[].ep_info/image_info.h members statically.
        The version, image_type and image attributes are now
        populated using this new macro.
      * Added PLAT_ARM_NVM_BASE and PLAT_ARM_NVM_SIZE to avoid direct
        usage of V2M_FLASH0_XXX in plat/arm/common/arm_bl1_fwu.c.
      * Refactoring of code/macros related to SECURE and EXECUTABLE flags.
      
      NOTE: PLATFORM PORTS THAT RELY ON THE SIZE OF `image_info_t`
            OR USE the "EXECUTABLE" BIT WITHIN `image_info_t.h.attr`
            OR USE THEIR OWN `image_desc_t` ARRAY IN BL1, MAY BE
            BROKEN BY THIS CHANGE. THIS IS CONSIDERED UNLIKELY.
      
      Change-Id: Id4e5989af7bf0ed263d19d3751939da1169b561d
      843ddee4