- 03 Jun, 2016 1 commit
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Soby Mathew authored
The system registers that are saved and restored in CPU context include AArch32 systems registers like SPSR_ABT, SPSR_UND, SPSR_IRQ, SPSR_FIQ, DACR32_EL2, IFSR32_EL2 and FPEXC32_EL2. Accessing these registers on an AArch64-only (i.e. on hardware that does not implement AArch32, or at least not at EL1 and higher ELs) platform leads to an exception. This patch introduces the build option `CTX_INCLUDE_AARCH32_REGS` to specify whether to include these AArch32 systems registers in the cpu context or not. By default this build option is set to 1 to ensure compatibility. AArch64-only platforms must set it to 0. A runtime check is added in BL1 and BL31 cold boot path to verify this. Fixes ARM-software/tf-issues#386 Change-Id: I720cdbd7ed7f7d8516635a2ec80d025f478b95ee
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- 20 May, 2016 2 commits
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Antonio Nino Diaz authored
Add delay timer implementation based on the system generic counter. This either uses the platform's implementation of `plat_get_syscnt_freq()` or explicit clock multiplier/divider values provided by the platform. The current implementation of udelay has been modified to avoid unnecessary calculations while waiting on the loop and to make it easier to check for overflows. Change-Id: I9062e1d506dc2f68367fd9289250b93444721732
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Antonio Nino Diaz authored
Added plat_get_syscnt_freq2, which is a 32 bit variant of the 64 bit plat_get_syscnt_freq. The old one has been flagged as deprecated. Common code has been updated to use this new version. Porting guide has been updated. Change-Id: I9e913544926c418970972bfe7d81ee88b4da837e
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- 27 Apr, 2016 2 commits
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Haojian Zhuang authored
In a lot of embedded platforms, eMMC device is the only one storage device. So loading content from eMMC device is required in ATF. Create the emmc stack that could co-work with IO block driver. Support to read/write/erase eMMC blocks on both rpmb and normal user area. Support to change the IO speed and bus width. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
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Haojian Zhuang authored
FIP is accessed as memory-mapped type. eMMC is block device type. In order to support FIP based on eMMC, add the new io_block layer. io_block always access eMMC device as block size. And it'll only copy the required data into buffer in io_block driver. So preparing an temporary buffer is required. When use io_block device, MAX_IO_BLOCK_DEVICES should be declared in platform_def.h. It's used to support multiple block devices. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
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- 21 Apr, 2016 6 commits
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Yatharth Kochar authored
This patch moves the definition for `plat_get_syscnt_freq()` from arm_bl31_setup.c to arm_common.c. This could be useful in case a delay timer needs to be installed based on the generic timer in other BLs. This patch also modifies the return type for this function from `uint64_t` to `unsigned long long` within ARM and other platform files. Change-Id: Iccdfa811948e660d4fdcaae60ad1d700e4eda80d
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Sandrine Bailleux authored
Change-Id: I86ac81ffd7cd094ce68c4cceb01c16563671a063
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Sandrine Bailleux authored
Change-Id: Icaacd19c4cef9c10d02adcc2f84a4d7c97d4bcfa
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Sandrine Bailleux authored
Change-Id: Ia2ce8aa752efb090cfc734c1895c8f2539e82439
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Sandrine Bailleux authored
Change-Id: I632a8c5bb517ff89c69268e865be33101059be7d
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Sandrine Bailleux authored
Change-Id: I45641551474f4c58c638aff8c42c0ab9a8ec78b4
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- 14 Apr, 2016 2 commits
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Gerald Lejeune authored
It is up to the platform to implement the new plat_crash_print_regs macro to report all relevant platform registers helpful for troubleshooting. plat_crash_print_regs merges or calls previously defined plat_print_gic_regs and plat_print_interconnect_regs macros for each existing platforms. NOTE: THIS COMMIT REQUIRES ALL PLATFORMS THAT ENABLE THE `CRASH_REPORTING` BUILD FLAG TO MIGRATE TO USE THE NEW `plat_crash_print_regs()` MACRO. BY DEFAULT, `CRASH_REPORTING` IS ENABLED IN DEBUG BUILDS FOR ALL PLATFORMS. Fixes: arm-software/tf-issues#373 Signed-off-by: Gerald Lejeune <gerald.lejeune@st.com>
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Sandrine Bailleux authored
If Trusted Firmware is built with optimizations disabled (-O0), the linker throws the following error: undefined reference to 'xxx' Where 'xxx' is a raw inline function defined in a header file. The reason is that, with optimizations disabled, GCC may decide to skip the inlining. If that is the case, an external definition to the compilation unit must be provided. Because no external definition is present, the linker throws the error. This patch fixes the problem by declaring the following inline functions static, so the internal definition is used: - cm_set_next_context() - bakery_lock_init() Note that building the TF with optimizations disabled when Trusted Board Boot is enabled is currently unsupported, as this makes the BL2 image too big to fit in memory without any adjustment of its base address. Similarly, disabling optimizations for debug builds on FVP is unsupported at the moment. Change-Id: I284a9f84cc8df96a0c1a52dfe05c9e8544c0cefe
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- 13 Apr, 2016 1 commit
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Soby Mathew authored
The AArch32 long descriptor format and the AArch64 descriptor format correspond to each other which allows possible sharing of xlat_tables library code between AArch64 and AArch32. This patch refactors the xlat_tables library code to seperate the common functionality from architecture specific code. Prior to this patch, all of the xlat_tables library code were in `lib/aarch64/xlat_tables.c` file. The refactored code is now in `lib/xlat_tables/` directory. The AArch64 specific programming for xlat_tables is in `lib/xlat_tables/aarch64/xlat_tables.c` and the rest of the code common to AArch64 and AArch32 is in `lib/xlat_tables/xlat_tables_common.c`. Also the data types used in xlat_tables library APIs are reworked to make it compatible between AArch64 and AArch32. The `lib/aarch64/xlat_tables.c` file now includes the new xlat_tables library files to retain compatibility for existing platform ports. The macros related to xlat_tables library are also moved from `include/lib/aarch64/arch.h` to the header `include/lib/xlat_tables.h`. NOTE: THE `lib/aarch64/xlat_tables.c` FILE IS DEPRECATED AND PLATFORM PORTS ARE EXPECTED TO INCLUDE THE NEW XLAT_TABLES LIBRARY FILES IN THEIR MAKEFILES. Change-Id: I3d17217d24aaf3a05a4685d642a31d4d56255a0f
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- 12 Apr, 2016 1 commit
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Yatharth Kochar authored
Currently the `tzc400_configure_region` and `tzc_dmc500_configure_region` functions uses uintptr_t as the data type for `region_top` and `region_base` variables, which will be converted to 32/64 bits for AArch32/AArch64 respectively. But the expectation is to keep these addresses at least 64 bit. This patch modifies the data types to make it at least 64 bit by using unsigned long long instead of uintptr_t for the `region_top` and `region_base` variables. It also modifies the associated macros `_tzc##fn_name##_write_region_xxx` accordingly. Change-Id: I4e3c6a8a39ad04205cf0f3bda336c3970b15a28b
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- 08 Apr, 2016 1 commit
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Antonio Nino Diaz authored
Previously, when building TF without SPD support, BL2 tried to load a BL32 image from the FIP and fails to find one, which resulted on warning messages on the console. Even if there is a BL32 image in the FIP it shouldn't be loaded because there is no way to transfer control to the Secure Payload without SPD support. The Makefile has been modified to pass a define of the form SPD_${SPD} to the source code the same way it's done for PLAT. The define SPD_none is then used to undefine BL32_BASE when BL32 is not used to prevent BL2 from trying to load a BL32 image and failing, thus removing the warning messages mentioned above. Fixes ARM-software/tf-issues#287 Change-Id: Ifeb6f1c26935efb76afd353fea88e87ba09e9658
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- 07 Apr, 2016 1 commit
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Soby Mathew authored
This patch enables the SCR_EL3.SIF (Secure Instruction Fetch) bit in BL1 and BL31 common architectural setup code. When in secure state, this disables instruction fetches from Non-secure memory. NOTE: THIS COULD BREAK PLATFORMS THAT HAVE SECURE WORLD CODE EXECUTING FROM NON-SECURE MEMORY, BUT THIS IS CONSIDERED UNLIKELY AND IS A SERIOUS SECURITY RISK. Fixes ARM-Software/tf-issues#372 Change-Id: I684e84b8d523c3b246e9a5fabfa085b6405df319
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- 01 Apr, 2016 2 commits
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Soren Brinkmann authored
Add a driver for the Cadence UART which is found in Xilinx Zynq SOCs. Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
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Soby Mathew authored
This patch modifies the return type of the platform API `plat_get_ns_image_entrypoint()` from `unsigned long` to `uintptr_t` in accordance with the coding guidelines. Change-Id: Icb4510ca98b706aa4d535fe27e203394184fb4ca
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- 31 Mar, 2016 7 commits
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Vikram Kanigiri authored
This patch adds support to program TrustZone protection on ARM platforms that implement a DMC-500. arm_dmc_500.c has been added which implements the arm_dmc_tzc_setup() function. This function relies on constants related to TZC programming that are exported by each platform to program TrustZone protection using the DMC-500 TrustZone controller driver. This function should be called from plat_arm_security_setup() which is implemented by each platform. Change-Id: I5400bdee9e4b29155fd11296a40693d512312f29
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Vikram Kanigiri authored
The ARM CoreLink DMC-500 Dynamic Memory Controller provides the programmable address region control of a TrustZone Address Space Controller. The access permissions can be defined for eight separate address regions plus a background or default region. This patch adds a DMC-500 driver to define address regions and program their access permissions as per ARM 100131_0000_02_en (r0p0) document. Change-Id: I9d33120f9480d742bcf7937e4b876f9d40c727e6
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Soby Mathew authored
This patch migrates ARM Standard platforms to the refactored TZC driver. Change-Id: I2a2f60b645f73e14d8f416740c4551cec87cb1fb
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Vikram Kanigiri authored
TrustZone protection can be programmed by both memory and TrustZone address space controllers like DMC-500 and TZC-400. These peripherals share a similar programmer's view. Furthermore, it is possible to have multiple instances of each type of peripheral in a system resulting in multiple programmer's views. For example, on the TZC-400 each of the 4 filter units can be enabled or disabled for each region. There is a single set of registers to program the region attributes. On the DMC-500, each filter unit has its own programmer's view resulting in multiple sets of registers to program the region attributes. The layout of the registers is almost the same across all these variations. Hence the existing driver in `tzc400\tzc400.c` is refactored into the new driver in `tzc\tzc400.c`. The previous driver file is still maintained for compatibility and it is now deprecated. Change-Id: Ieabd0528e244582875bc7e65029a00517671216d
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Antonio Nino Diaz authored
lib/aarch64/xlat_helpers.c defines helper functions to build translation descriptors, but no common code or upstream platform port uses them. As the rest of the xlat_tables code evolves, there may be conflicts with these helpers, therefore this code should be removed. Change-Id: I9f5be99720f929264818af33db8dada785368711
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Juan Castillo authored
This patch adds support for non-volatile counter authentication to the Authentication Module. This method consists of matching the counter values provided in the certificates with the ones stored in the platform. If the value from the certificate is lower than the platform, the boot process is aborted. This mechanism protects the system against rollback. The TBBR CoT has been updated to include this method as part of the authentication process. Two counters are used: one for the trusted world images and another for the non trusted world images. ** NEW PLATFORM APIs (mandatory when TBB is enabled) ** int plat_get_nv_ctr(void *cookie, unsigned int *nv_ctr); This API returns the non-volatile counter value stored in the platform. The cookie in the first argument may be used to select the counter in case the platform provides more than one (i.e. TBSA compliant platforms must provide trusted and non-trusted counters). This cookie is specified in the CoT. int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr); This API sets a new counter value. The cookie may be used to select the counter to be updated. An implementation of these new APIs for ARM platforms is also provided. The values are obtained from the Trusted Non-Volatile Counters peripheral. The cookie is used to pass the extension OID. This OID may be interpreted by the platform to know which counter must return. On Juno, The trusted and non-trusted counter values have been tied to 31 and 223, respectively, and cannot be modified. ** IMPORTANT ** THIS PATCH BREAKS THE BUILD WHEN TRUSTED_BOARD_BOOT IS ENABLED. THE NEW PLATFORM APIs INTRODUCED IN THIS PATCH MUST BE IMPLEMENTED IN ORDER TO SUCCESSFULLY BUILD TF. Change-Id: Ic943b76b25f2a37f490eaaab6d87b4a8b3cbc89a
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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
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- 30 Mar, 2016 3 commits
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Gerald Lejeune authored
Bring ISR bits definition as a mnemonic for troublershooters as well. Signed-off-by: Gerald Lejeune <gerald.lejeune@st.com>
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Gerald Lejeune authored
These macros are unused and redundant with other CPU system registers functions. Moreover enable_serror() function implementation may not reach its purpose because it does not handle the value of SCR_EL3.EA. Signed-off-by: Gerald Lejeune <gerald.lejeune@st.com>
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Gerald Lejeune authored
Asynchronous abort exceptions generated by the platform during cold boot are not taken in EL3 unless SCR_EL3.EA is set. Therefore EA bit is set along with RES1 bits in early BL1 and BL31 architecture initialisation. Further write accesses to SCR_EL3 preserve these bits during cold boot. A build flag controls SCR_EL3.EA value to keep asynchronous abort exceptions being trapped by EL3 after cold boot or not. For further reference SError Interrupts are also known as asynchronous external aborts. On Cortex-A53 revisions below r0p2, asynchronous abort exceptions are taken in EL3 whatever the SCR_EL3.EA value is. Fixes arm-software/tf-issues#368 Signed-off-by: Gerald Lejeune <gerald.lejeune@st.com>
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- 22 Mar, 2016 1 commit
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Soby Mathew authored
The assembler helper function `print_revision_warning` is used when a CPU specific operation is enabled in the debug build (e.g. an errata workaround) but doesn't apply to the executing CPU's revision/part number. However, in some cases the system integrator may want a single binary to support multiple platforms with different IP versions, only some of which contain a specific erratum. In this case, the warning can be emitted very frequently when CPUs are being powered on/off. This patch modifies this warning print behaviour so that it is emitted only when LOG_LEVEL >= LOG_LEVEL_VERBOSE. The `debug.h` header file now contains guard macros so that it can be included in assembly code. Change-Id: Ic6e7a07f128dcdb8498a5bfdae920a8feeea1345
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- 14 Mar, 2016 1 commit
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Antonio Nino Diaz authored
Added a new platform porting function plat_panic_handler, to allow platforms to handle unexpected error situations. It must be implemented in assembly as it may be called before the C environment is initialized. A default implementation is provided, which simply spins. Corrected all dead loops in generic code to call this function instead. This includes the dead loop that occurs at the end of the call to panic(). All unnecesary wfis from bl32/tsp/aarch64/tsp_exceptions.S have been removed. Change-Id: I67cb85f6112fa8e77bd62f5718efcef4173d8134
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- 07 Mar, 2016 1 commit
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Antonio Nino Diaz authored
The previous reset code in BL1 performed the following steps in order: 1. Warm/Cold boot detection. If it's a warm boot, jump to warm boot entrypoint. 2. Primary/Secondary CPU detection. If it's a secondary CPU, jump to plat_secondary_cold_boot_setup(), which doesn't return. 3. CPU initialisations (cache, TLB...). 4. Memory and C runtime initialization. For a secondary CPU, steps 3 and 4 are never reached. This shouldn't be a problem in most cases, since current implementations of plat_secondary_cold_boot_setup() either panic or power down the secondary CPUs. The main concern is the lack of secondary CPU initialization when bare metal EL3 payloads are used in case they don't take care of this initialisation themselves. This patch moves the detection of primary/secondary CPU after step 3 so that the CPU initialisations are performed per-CPU, while the memory and the C runtime initialisation are only performed on the primary CPU. The diagrams used in the ARM Trusted Firmware Reset Design documentation file have been updated to reflect the new boot flow. Platforms ports might be affected by this patch depending on the behaviour of plat_secondary_cold_boot_setup(), as the state of the platform when entering this function will be different. Fixes ARM-software/tf-issues#342 Change-Id: Icbf4a0ee2a3e5b856030064472f9fa6696f2eb9e
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- 03 Mar, 2016 1 commit
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Sandrine Bailleux authored
At the moment, the memory translation library allows to create memory mappings of 2 types: - Device nGnRE memory (named MT_DEVICE in the library); - Normal, Inner Write-back non-transient, Outer Write-back non-transient memory (named MT_MEMORY in the library). As a consequence, the library code treats the memory type field as a boolean: everything that is not device memory is normal memory and vice-versa. In reality, the ARMv8 architecture allows up to 8 types of memory to be used at a single time for a given exception level. This patch reworks the memory attributes such that the memory type is now defined as an integer ranging from 0 to 7 instead of a boolean. This makes it possible to extend the list of memory types supported by the memory translation library. The priority system dictating memory attributes for overlapping memory regions has been extended to cope with these changes but the algorithm at its core has been preserved. When a memory region is re-mapped with different memory attributes, the memory translation library examines the former attributes and updates them only if the new attributes create a more restrictive mapping. This behaviour is unchanged, only the manipulation of the value has been modified to cope with the new format. This patch also introduces a new type of memory mapping in the memory translation library: MT_NON_CACHEABLE, meaning Normal, Inner Non-cacheable, Outer Non-cacheable memory. This can be useful to map a non-cacheable memory region, such as a DMA buffer for example. The rules around the Execute-Never (XN) bit in a translation table for an MT_NON_CACHEABLE memory mapping have been aligned on the rules used for MT_MEMORY mappings: - If the memory is read-only then it is also executable (XN = 0); - If the memory is read-write then it is not executable (XN = 1). The shareability field for MT_NON_CACHEABLE mappings is always set as 'Outer-Shareable'. Note that this is not strictly needed since shareability is only relevant if the memory is a Normal Cacheable memory type, but this is to align with the existing device memory mappings setup. All Device and Normal Non-cacheable memory regions are always treated as Outer Shareable, regardless of the translation table shareability attributes. This patch also removes the 'ATTR_SO' and 'ATTR_SO_INDEX' #defines. They were introduced to map memory as Device nGnRnE (formerly called "Strongly-Ordered" memory in the ARMv7 architecture) but were not used anywhere in the code base. Removing them avoids any confusion about the memory types supported by the library. Upstream platforms do not currently use the MT_NON_CACHEABLE memory type. NOTE: THIS CHANGE IS SOURCE COMPATIBLE BUT PLATFORMS THAT RELY ON THE BINARY VALUES OF `mmap_attr_t` or the `attr` argument of `mmap_add_region()` MAY BE BROKEN. Change-Id: I717d6ed79b4c845a04e34132432f98b93d661d79
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- 22 Feb, 2016 2 commits
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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
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Vikram Kanigiri authored
`board_arm_def.h` contains multiple definitions of `PLAT_ARM_MMAP_ENTRIES` and `MAX_XLAT_TABLES` that are optimised for memory usage depending upon the chosen build configuration. To ease maintenance of these constants, this patch replaces their multiple definitions with a single set of definitions that will work on all ARM platforms. Platforms can override the defaults with optimal values by enabling the `ARM_BOARD_OPTIMISE_MMAP` build option. An example has been provided in the Juno ADP port. Additionally, `PLAT_ARM_MMAP_ENTRIES` is increased by one to accomodate future ARM platforms. Change-Id: I5ba6490fdd1e118cc9cc2d988ad7e9c38492b6f0
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- 19 Feb, 2016 1 commit
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Soby Mathew authored
The common topology description helper funtions and macros for ARM Standard platforms assumed a dual cluster system. This is not flexible enough to scale to multi cluster platforms. This patch does the following changes for more flexibility in defining topology: 1. The `plat_get_power_domain_tree_desc()` definition is moved from `arm_topology.c` to platform specific files, that is `fvp_topology.c` and `juno_topology.c`. Similarly the common definition of the porting macro `PLATFORM_CORE_COUNT` in `arm_def.h` is moved to platform specific `platform_def.h` header. 2. The ARM common layer porting macros which were dual cluster specific are now removed and a new macro PLAT_ARM_CLUSTER_COUNT is introduced which must be defined by each ARM standard platform. 3. A new mandatory ARM common layer porting API `plat_arm_get_cluster_core_count()` is introduced to enable the common implementation of `arm_check_mpidr()` to validate MPIDR. 4. For the FVP platforms, a new build option `FVP_NUM_CLUSTERS` has been introduced which allows the user to specify the cluster count to be used to build the topology tree within Trusted Firmare. This enables Trusted Firmware to be built for multi cluster FVP models. Change-Id: Ie7a2e38e5661fe2fdb2c8fdf5641d2b2614c2b6b
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- 18 Feb, 2016 1 commit
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Juan Castillo authored
The shared memory region on ARM platforms contains the mailboxes and, on Juno, the payload area for communication with the SCP. This shared memory may be configured as normal memory or device memory at build time by setting the platform flag 'PLAT_ARM_SHARED_RAM_CACHED' (on Juno, the value of this flag is defined by 'MHU_PAYLOAD_CACHED'). When set as normal memory, the platform port performs the corresponding cache maintenance operations. From a functional point of view, this is the equivalent of setting the shared memory as device memory, so there is no need to maintain both options. This patch removes the option to specify the shared memory as normal memory on ARM platforms. Shared memory is always treated as device memory. Cache maintenance operations are no longer needed and have been replaced by data memory barriers to guarantee that payload and MHU are accessed in the right order. Change-Id: I7f958621d6a536dd4f0fa8768385eedc4295e79f
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- 16 Feb, 2016 2 commits
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Vikram Kanigiri authored
ARM Trusted Firmware supports 2 different interconnect peripheral drivers: CCI and CCN. ARM platforms are implemented using either of the interconnect peripherals. This patch adds a layer of abstraction to help ARM platform ports to choose the right interconnect driver and corresponding platform support. This is as described below: 1. A set of ARM common functions have been implemented to initialise an interconnect and for entering/exiting a cluster from coherency. These functions are prefixed as "plat_arm_interconnect_". Weak definitions of these functions have been provided for each type of driver. 2.`plat_print_interconnect_regs` macro used for printing CCI registers is moved from a common arm_macros.S to cci_macros.S. 3. The `ARM_CONFIG_HAS_CCI` flag used in `arm_config_flags` structure is renamed to `ARM_CONFIG_HAS_INTERCONNECT`. Change-Id: I02f31184fbf79b784175892d5ce1161b65a0066c
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Vikram Kanigiri authored
Current code mandates loading of SCP_BL2/SCP_BL2U images for all CSS platforms. On future ARM CSS platforms, the Application Processor (AP) might not need to load these images. So, these items can be removed from the FIP on those platforms. BL2 tries to load SCP_BL2/SCP_BL2U images if their base addresses are defined causing boot error if the images are not found in FIP. This change adds a make flag `CSS_LOAD_SCP_IMAGES` which if set to `1` does: 1. Adds SCP_BL2, SCP_BL2U images to FIP. 2. Defines the base addresses of these images so that AP loads them. And vice-versa if it is set to `0`. The default value is set to `1`. Change-Id: I5abfe22d5dc1e9d80d7809acefc87b42a462204a
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- 15 Feb, 2016 1 commit
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Vikram Kanigiri authored
Current code assumes `SCP_COM_SHARED_MEM_BASE` as the base address for BOM/SCPI protocol between AP<->SCP on all CSS platforms. To cater for future ARM platforms this is made platform specific. Similarly, the bit shifts of `SCP_BOOT_CONFIG_ADDR` are also made platform specific. Change-Id: Ie8866c167abf0229a37b3c72576917f085c142e8
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