aboutsummaryrefslogtreecommitdiff
path: root/plat/imx/common
AgeCommit message (Collapse)Author
2021-05-21feat(plat/imx8m): add SiP call for secondary bootIgor Opaniuk
In iMX8MM it is possible to have two copies of bootloader in SD/eMMC and switch between them. The switch is triggered either by the BootROM in case the bootloader image is faulty OR can be enforced by the user. To trigger that switch the PERSIST_SECONDARY_BOOT bit should be set in GPR10 SRC register. As the bit is retained after WARM reset, that permits to control BootROM behavior regarding what boot image it will boot after reset: primary or secondary. This is useful for reliable bootloader A/B updates, as it permits switching between two copies of bootloader at different offsets of the same storage. If the PERSIST_SECONDARY_BOOT is 0, the boot ROM uses address 0x8400 for the primary image. If the PERSIST_SECONDARY_BOOT is 1, the boot ROM reads that secondary image table from address 0x8200 on the boot media and uses the address specified in the table for the secondary image. Secondary Image Table contains the sector of secondary bootloader image, exluding the offset to that image (explained below in the note). To generate the Secondary Image Table, use e.g.: $ printf '\x0\x0\x0\x0\x0\x0\x0\x0\x33\x22\x11' '\x00\x00\x10\x0\x0\x00\x0\x0\x0' > /tmp/sit.bin $ hexdump -vC /tmp/sit.bin 00000000 00 00 00 00 00000004 00 00 00 00 00000008 33 22 11 00 <--- This is the "tag" 0000000c 00 10 00 00 <--- This is the "firstSectorNumber" 00000010 00 00 00 00 You can also use NXP script from [1][2] imx-mkimage tool for SIT generation. Note that the firstSectorNumber is NOT the offset of the IVT, but an offset of the IVT decremented by Image Vector Table offset (Table 6-25. Image Vector Table Offset and Initial Load Region Size for iMX8MM/MQ), so for secondary SPL copy at offset 0x1042 sectors, firstSectorNumber must be 0x1000 (0x42 sectors * 512 = 0x8400 bytes offset). In order to test redundant boot board should be closed and SD/MMC manufacture mode disabled, as secondary boot is not supported in the SD/MMC manufacture mode, which can be disabled by blowing DISABLE_SDMMC_MFG (example for iMX8MM): > fuse prog -y 2 1 0x00800000 For additional details check i.MX 8M Mini Apllication Processor Reference Manual, 6.1.5.4.5 Redundant boot support for expansion device chapter. [1] https://source.codeaurora.org/external/imx/imx-mkimage/ [2] scripts/gen_sit.sh Change-Id: I0a5cea7295a4197f6c89183d74b4011cada52d4c Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io>
2020-10-09Don't return error information from console_flushJimmy Brisson
And from crash_console_flush. We ignore the error information return by console_flush in _every_ place where we call it, and casting the return type to void does not work around the MISRA violation that this causes. Instead, we collect the error information from the driver (to avoid changing that API), and don't return it to the caller. Change-Id: I1e35afe01764d5c8f0efd04f8949d333ffb688c1 Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
2020-08-06plat: imx: add sdei support for i.MX8MMPeng Fan
Add sdei support for i.MX8MM, this is to let jailhouse Hypervisor could use SDEI to do hypervisor management, after physical IRQ has been disabled routing. Signed-off-by: Peng Fan <peng.fan@nxp.com> Change-Id: I5fd697fee22df151e13d0f1335e8ac8a7bae6189
2020-07-22plat: imx: common: implement IMX_SIP_AARCH32Peng Fan
Implement IMX_SIP_AARCH32 to let AArch64 Bootloader could issue SIP call to switch to AArch32 mode to run OS. Signed-off-by: Peng Fan <peng.fan@nxp.com> Change-Id: I38b04ef909a6dbfba5ded12a7bb6e799a3935a66
2020-03-16plat: imx: imx8_iomux: fix shift-overflow errorsIgor Opaniuk
This fixes shift overflow errors, when compiled with CONSOLE_DEBUG support: plat/imx/common/include/imx8_iomux.h:11:35: error: result of ‘1 << 31’ requires 33 bits to represent, but ‘int’ only has 32 bits [-Werror=shift-overflow=] Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com> Change-Id: I0488e22c30314ba27caabc5c767164baa1e8004c
2020-03-05imx: console: Use CONSOLE_T_BASE for UART base addressAndre Przywara
Since commit ac71344e9eca we have the UART base address in the generic console_t structure. For most platforms the platform-specific struct console is gone, so we *must* use the embedded base address, since there is no storage behind the generic console_t anymore. Replace the usage of CONSOLE_T_DRVDATA with CONSOLE_T_BASE to fix this. Change-Id: I6d2ab0bc2c845c71f98b9dd64d89eef3252f4591 Reported-by: Varun Wadekar <vwadekar@nvidia.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2020-02-25imx: Use generic console_t data structureAndre Przywara
Since now the generic console_t structure holds the UART base address as well, let's use that generic location and drop the UART driver specific data structure at all. Change-Id: I058f793e4024fa7291e432f5be374a77faf16f36 Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2020-01-21Merge changes Ib1ed9786,I6c4855c8 into integrationSandrine Bailleux
* changes: plat: imx: Correct the SGIs that used for secure interrupt plat: imx8mm: Add the support for opteed spd on imx8mq/imx8mm
2019-12-04imx: Fix multiple definition of ipc_handleSamuel Holland
This is not conforming C and does not compile with -fno-common. Signed-off-by: Samuel Holland <samuel@sholland.org> Change-Id: I6535954cc567d6efa06919069b91e3f50975b073
2019-12-04imx: Fix missing inclusion of cdefs.hSamuel Holland
This was found by compiling with -fno-common: ./build/picopi/release/bl2/imx_snvs.o:(.bss.__packed+0x0): multiple definition of `__packed'; ./build/picopi/release/bl2/imx_caam.o:(.bss.__packed+0x0): first defined here __packed was intended to be the attribute macro from cdefs.h, not an object of the structure type. Signed-off-by: Samuel Holland <samuel@sholland.org> Change-Id: Id02fac3f098be2d71c35c6b4a18012515532f32a
2019-11-06plat: imx: Correct the SGIs that used for secure interruptJacky Bai
Normally, SGI6 & SGI7 is used by non-secure world, these two SGIs should not be reserved for secure interrupt purpose. On i.MX8M platform, SGI8 is used for secure group0 IPI for DDR DVFS, So update the code to reserve SGI8 for secure world. Change-Id: Ib1ed9786e0a79bb729b120a0d4d791d13b6f048a Signed-off-by: Jacky Bai <ping.bai@nxp.com>
2019-08-01Replace __ASSEMBLY__ with compiler-builtin __ASSEMBLER__Julius Werner
NOTE: __ASSEMBLY__ macro is now deprecated in favor of __ASSEMBLER__. All common C compilers predefine a macro called __ASSEMBLER__ when preprocessing a .S file. There is no reason for TF-A to define it's own __ASSEMBLY__ macro for this purpose instead. To unify code with the export headers (which use __ASSEMBLER__ to avoid one extra dependency), let's deprecate __ASSEMBLY__ and switch the code base over to the predefined standard. Change-Id: Id7d0ec8cf330195da80499c68562b65cb5ab7417 Signed-off-by: Julius Werner <jwerner@chromium.org>
2019-07-26Merge changes from topic "jun-add-imx7-pico" into integrationSoby Mathew
* changes: plat: imx7: Add PicoPi iMX7D basic support plat: imx7: refactor code for reuse
2019-07-17plat: imx7: Add PicoPi iMX7D basic supportJun Nie
The PicoPi iMX7D is a 2 board development board consisting of a System-on-Module and a carrier baseboard and optimized for the Internet-of-Things (IoT). This patch add basic support to this board. Signed-off-by: Jun Nie <jun.nie@linaro.org> Reviewed-by: Louis Mayencourt <louis.mayencourt@arm.com> Change-Id: I009d85819c4f73b7063aab73d0f6ee74e6ef3fc4
2019-07-17plat: imx7: refactor code for reuseJun Nie
For the iMX7 SOCs, part of the code for platform setup implementation can be reused and made common for all these SoCs. This patch extracts the common part for reuse. Signed-off-by: Jun Nie <jun.nie@linaro.org> Change-Id: I42fd4167e6903416df96a0159a046abf3896e878
2019-07-12Update imx platform to not rely on undefined overflow behaviourJustin Chadwell
This consists of ensuring that the left operand of each shift is unsigned when the operation might overflow into the sign bit. Change-Id: Ia0a10b4a30e63c0cbf1d0f8dfe5768e0a93ae1c7 Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
2019-05-20imx8: Replace PLAT_IMX8* with automatic PLAT_imx8*Leonard Crestez
Platform defines are already provided by the build system so let's not duplicate them. Change-Id: Icf1ea76c3c3213e27b447c95e2b22b961fa7693e Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
2019-05-20plat: imx8mq: Implement IMX_SIP_GET_SOC_INFOLeonard Crestez
The manual documents that 0x3036006c should contains the soc revision for imx8mq but this always reports A0. Work around this by parsing the ROM header and checking if OCOTP register 0x40 is stuck at 0xff0055aa. Determining this inside TF-A makes life easier for OS, see for example this linux discussion: https://lkml.org/lkml/2019/5/3/465 The soc revision can also be useful inside TF-A itself, for example for the non-upstream DDR DVFS "busfreq" feature is affected by 8mq erratas. The clock for OCOTP block can be disabled by OS so only initialize soc revision once at boot time. Change-Id: I9ca3f27840229ce8a28b53870e44da29f63c73aa Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
2019-05-09plat: imx8m: Implement IMX_SIP_BUILDINFOLeonard Crestez
The IMX_SIP_BUILDINFO call was implemented for imx8qm and imx8qx but it's also applicable to imx8m. This fixes U-Boot not printing commit hash on 8m with upstream TF-A. Change-Id: Idcfd9729eaaccf329c24e241da325f1f6cd3c880 Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
2019-04-03Makefile: remove extra include paths in INCLUDESAmbroise Vincent
Now it is needed to use the full path of the common header files. Commit 09d40e0e0828 ("Sanitise includes across codebase") provides more information. Change-Id: Ifedc79d9f664d208ba565f5736612a3edd94c647 Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
2019-04-03Console: remove deprecated finish_console_registerAmbroise Vincent
The old version of the macro is deprecated. Commit cc5859ca19ff ("Multi-console: Deprecate the `finish_console_register` macro") provides more details. Change-Id: I3d1cdf6496db7d8e6cfbb5804f508ff46ae7e67e Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
2019-03-01imx: make sure GIC redistributor is awake before initializationAnson Huang
GICR_WAKER.ProcessorSleep can only be set to zero when: — GICR_WAKER.Sleep bit[0] == 0. — GICR_WAKER.Quiescent bit[31] == 0. On some platforms, when system reboot with GIC in sleep mode but with power ON, such as on NXP's i.MX8QM, Linux kernel enters suspend but could be requested to reboot, and GIC is in sleep mode and it is inside a power domain which is ON in this scenario, when CPU reset, the GIC driver trys to set CORE's redistributor interface to awake, with GICR_WAKER.Sleep bit[0] and GICR_WAKER.Quiescent bit[31] both set, the ProcessorSleep bit[1] will never be clear and cause system hang. This patch makes sure GICR_WAKER.Sleep bit[0] and GICR_WAKER.Quiescent bit[31] are both zeor before clearing ProcessorSleep bit[1]. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-02-12imx: warp7: Migrate to MULTI_CONSOLE_APIYing-Chun Liu (PaulLiu)
This commit migrates to MULTI_CONSOLE_API for IMX Warp7 board. We also rename the functions in imx_uart driver to more specific one. Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>
2019-01-29imx: power optimization for i.mx8qmAnson Huang
Current implementation of i.MX8QM power management related features does NOT optimize power number, all system resources like CCI, DDR, and A cluster etc. are kept in STBY mode (powered ON) when system suspend or CPU hotplug. To lower the power number, OFF mode should be adopted for those system resources whenever they can be OFF, A cluster will be OFF if the CPUs in the cluster are all off line, DDR/MU/DB can be OFF if system suspend, IRQ steer can be OFF if the wakeup source is belonged to system controller partition, so wakeup source runtime check is used to determine if IRQ steer can be OFF before system suspend. If resources are powered off for suspend, they should be restored properly after system resume. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-18imx: add i.MX8 SoCs build info SIP(silicon provider) service supportAnson Huang
This patch adds NXP i.MX8 SoCs' build info SIP support for easy debug. With this function enabled, TF-A's commit hash can be showed in u-boot debug console when booting up, when there is any issue which could be related to TF-A, users can use the commit hash value to easily identify which commit introduces the issue. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-18imx: add i.MX8 SoCs thermal alarm SIP(silicon provider) service supportAnson Huang
For NXP's i.MX8 SoCs with system controller inside, thermal sensors are maintained by SCFW, Linux needs to call SMC to trap to TF-A for thermal alarm operation etc. by calling SCFW API. This patch adds temperature alarm SIP service support. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-18imx: add i.MX8 SoCs OTP SIP(silicon provider) service supportAnson Huang
For NXP's i.MX8 SoCs with system controller inside, OTP is maintained by SCFW, Linux needs to call SMC to trap to TF-A for OTP read/write etc. operations by calling SCFW API. This patch adds OTP SIP service support. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-18imx: support for i.MX8 SoCs misc IPCAnson Huang
NXP's i.MX8 SoCs have system controller (M4 core) which takes control of misc functions like temperature alarm, dma etc., other Cortex-A clusters can send out command via MU (Message Unit) to system controller for misc operation etc.. This patch adds misc IPC(inter-processor communication) support. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-18imx: add wakeup source SIP runtime service supportAnson Huang
On i.MX8QM/i.MX8QX with system controller inside, the wakeup source is managed in SCFW(system controller firmware), if the wakeup source is belonged to system controller partition, then before Linux suspend, the wakeup source should be set to SC_PM_WAKE_SRC_SCU, and if the wakeup source is belonged to Cortex-A partition, the wakeup source should be set to SC_PM_WAKE_SRC_IRQSTEER, so need to add wakeup source SIP runtime service to get Linux kernel's wakeup source and set the correct wakeup source for system controller. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-17imx: add cpu-freq SIP runtime service supportAnson Huang
On i.MX8QM/i.MX8QX with system controller inside, the CPU's clock rate is managed by SCFW(system controller firmware) and can ONLY be changed from secure world, so SIP runtime service is needed for setting CPU's clock rate, this patch adds cpu-freq SIP runtime service support. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-17imx: add imx8qm/imx8qx SRTC SIP runtime service supportAnson Huang
On i.MX8QM/i.MX8QX with system controller inside, the SRTC is managed by SCFW(system controller firmware) and some functions like setting SRTC's time etc. can ONLY be requested from secure world, so SIP runtime service is needed for such kind of operations, this patch adds SRTC SIP runtime service support for i.MX8QM and i.MX8QX. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-17Support for NXP's i.MX8 SoCs timer IPCAnson Huang
NXP's i.MX8 SoCs have system controller (M4 core) which takes control of timer management, including watchdog, srtc and system counter etc., other clusters like Cortex-A35 can send out command via MU (Message Unit) to system controller for timer operation. This patch adds timer IPC(inter-processor communication) support. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-15imx: make imx uart work for debug modeAnson Huang
With DEBUG_CONSOLE enabled, build will fail for imx8mq platform: ./build/imx8mq/release/bl31/imx8mq_bl31_setup.o: In function `bl31_early_platform_setup2': imx8mq_bl31_setup.c:(.text.bl31_early_platform_setup2+0x40): undefined reference to `console_uart_register' Makefile:741: recipe for target 'build/imx8mq/release/bl31/bl31.elf' failed make: *** [build/imx8mq/release/bl31/bl31.elf] Error 1 Besides, the .console_flush callback needs to be added to avoid panic when debug mode is enabled, since the console_flush() will call it without checking whether the function callback is valid. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-15imx: add necessary lpuart console_flush callback for debugAnson Huang
Current lpuart driver does NOT implement .console_flush callback, if debug console is enabled, the console_flush() will call the undefined .console_flush callback(NULL) for lpuart and leak to panic, this patch adds .console_flush callback to make lpuart work for debug mode. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2019-01-04Sanitise includes across codebaseAntonio Nino Diaz
Enforce full include path for includes. Deprecate old paths. The following folders inside include/lib have been left unchanged: - include/lib/cpus/${ARCH} - include/lib/el3_runtime/${ARCH} The reason for this change is that having a global namespace for includes isn't a good idea. It defeats one of the advantages of having folders and it introduces problems that are sometimes subtle (because you may not know the header you are actually including if there are two of them). For example, this patch had to be created because two headers were called the same way: e0ea0928d5b7 ("Fix gpio includes of mt8173 platform to avoid collision."). More recently, this patch has had similar problems: 46f9b2c3a282 ("drivers: add tzc380 support"). This problem was introduced in commit 4ecca33988b9 ("Move include and source files to logical locations"). At that time, there weren't too many headers so it wasn't a real issue. However, time has shown that this creates problems. Platforms that want to preserve the way they include headers may add the removed paths to PLAT_INCLUDES, but this is discouraged. Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
2018-12-05plat: imx: Add i.MX8MQ basic supportBai Ping
i.MX8MQ is new SOC of NXP's i.MX8M family based on A53. It can provide industry-leading audio, voice and video processing for applications that scale from consumer home audio to industrial building automation and mobile computers this patchset add the basic supoort to boot up the 4 X A53. more feature will be added later. Signed-off-by: Bai Ping <ping.bai@nxp.com>
2018-11-08Standardise header guards across codebaseAntonio Nino Diaz
All identifiers, regardless of use, that start with two underscores are reserved. This means they can't be used in header guards. The style that this project is now to use the full name of the file in capital letters followed by 'H'. For example, for a file called "uart_example.h", the header guard is UART_EXAMPLE_H. The exceptions are files that are imported from other projects: - CryptoCell driver - dt-bindings folders - zlib headers Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
2018-10-25Merge pull request #1636 from antonio-nino-diaz-arm/an/consoleAntonio Niño Díaz
Deprecate weak crash console functions
2018-10-25Add plat_crash_console_flush to platforms without itAntonio Nino Diaz
Even though at this point plat_crash_console_flush is optional, it will stop being optional in a following patch. The console driver of warp7 doesn't support flush, so the implementation is a placeholder. TI had ``plat_crash_console_init`` and ``plat_crash_console_putc``, but they weren't global so they weren't actually used. Also, they were calling the wrong functions. imx8_helpers.S only has placeholders for all of the functions. Change-Id: I8d17bbf37c7dad74e134c61ceb92acb9af497718 Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
2018-10-19Multi-console: Deprecate the `finish_console_register` macroSoby Mathew
The `finish_console_register` macro is used by the multi console framework to register the `console_t` driver callbacks. It relied on weak references to the `ldr` instruction to populate 0 to the callback in case the driver has not defined the appropriate function. Use of `ldr` instruction to load absolute address to a reference makes the binary position dependant. These instructions should be replaced with adrp/adr instruction for position independant executable(PIE). But adrp/adr instructions don't work well with weak references as described in GNU ld bugzilla issue 22589. This patch defines a new version of `finish_console_register` macro which can spcify which driver callbacks are valid and deprecates the old one. If any of the argument is not specified, then the macro populates 0 for that callback. Hence the functionality of the previous deprecated macro is preserved. The USE_FINISH_CONSOLE_REG_2 define is used to select the new variant of the macro and will be removed once the deprecated variant is removed. All the upstream console drivers have been migrated to use the new macro in this patch. NOTE: Platforms be aware that the new variant of the `finish_console_register` should be used and the old variant is deprecated. Change-Id: Ia6a67aaf2aa3ba93932992d683587bbd0ad25259 Signed-off-by: Soby Mathew <soby.mathew@arm.com>
2018-09-28imx8qm: imx8qx: Migrate to new interfacesAntonio Nino Diaz
- Migrate to new GIC interfaces. - Migrate to bl31_early_platform_setup2(). - Remove references to removed build options. Change-Id: Ia7c63f75325ea4b41e32a9de3f01b0007d0ae210 Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
2018-09-04imx: imx_wdog: Add code to initialize the wdog blockBryan O'Donoghue
The watchdog block on the IMX is mercifully simple. This patch maps the various registers and bits associated with the block. We are mostly only really interested in the power-down-enable (PDE) bits in the block for the purposes of ATF. The i.MX7 Solo Applications Processor Reference Manual details the PDE bit as follows: "Power Down Enable bit. Reset value of this bit is 1, which means the power down counter inside the WDOG is enabled after reset. The software must write 0 to this bit to disable the counter within 16 seconds of reset de-assertion. Once disabled this counter cannot be enabled again. See Power-down counter event for operation of this counter." This patch does that zero write in-lieu of later phases in the boot no-longer have the necessary permissions to rewrite the PDE bit directly. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-09-04imx: imx_caam: Add code to initialize the CAAM job-rings to NS-worldBryan O'Donoghue
This patch defines the most basic part of the CAAM and the only piece of the CAAM silicon we are really interested in, in ATF, the CAAM control structure. The CAAM itself is a huge address space of some 32k, way out of scope for the purpose we have in ATF. This patch adds a simple CAAM init function that assigns ownership of the CAAM job-rings to the non-secure MID with the ownership bit set to non-secure. This will allow later logic in the boot process such as OPTEE, u-boot and Linux to assign job-rings as appropriate, restricting if necessary but leaving open the main functionality of the CAAM to the Linux NS runtime. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-09-04imx: imx_hab: Define a HAB header fileBryan O'Donoghue
The High Assurance Boot or HAB is an on-chip method of providing a root-of-trust from the reset vector to subsequent stages in the bootup flow of the Cortex-A7 on the i.MX series of processors. This patch adds a simple header file with pointer offsets of the provided set of HAH API callbacks in the BootROM. The relative offset of the function pointers is a constant and known quantum, a software-contract between NXP and an implementation which is defined in the NXP HAB documentation. All we need is the correct base offset and then we can map the set of function pointers relative to that offset. imx_hab_arch.h provides the correct offset and the imx_hab.h hooks the offset to the pre-determined callbacks. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Reviewed-by: Ryan Harkin <ryan.harkin@linaro.org>
2018-09-04imx: imx_snvs: Add an SNVS core functionalityBryan O'Donoghue
This patch adds snvs.c with a imx_snvs_init() function. imx_snvs_init() sets up permissions of the RTC via the SNVS HPCOMR. During previous work with OPTEE on the i.MX7 part we discovered that prior to switching from secure-world to normal-world it is required to apply more permissive permissions than are defaulted to in order for Linux to be able to access the RTC and CAAM functionality in general. This patch pertains to fixing the RTC permissions by way of the HPCOMR.NPSWA_EN bit. Once set non-privileged code aka Linux-kernel code has permissions to access the SNVS where the RTC resides. Perform that permissions fix in imx_snvs_init() now, with a later patch making the call from our platform setup code. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-09-04imx: imx_snvs: Define a SNVS header and memory mapBryan O'Donoghue
This commit defines two things. - The basic SNVS memory map. At the moment that is total overkill for the permission bits we need to set inside the SNVS but, for the sake of completeness define the whole SNVS area as a struct. - The bits of the HPCOMR register A permission fix will need to be applied to the SNVS block prior to switching on TrustZone. All we need to do is waggle a bit in the HPCOMR register. To do that waggle we first need to define the bits of the HPCOMR register. - A imx_snvs_init() function definition Declare the snvs_init() function so that it can be called from our platform setup code. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-09-04imx: imx_csu: Add a simple CSU layerBryan O'Donoghue
- Add a header to define imx_csu_init(). - Defines the Central Security Unit's Config Security Level permission bits. - Define CSU_CSL_OPEN_ACCESS permission bitmask - Run a loop to setup peripheral CSU permissions Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-09-04imx: imx_aips: Add initial AIPS supportBryan O'Donoghue
This patch adds an initial AHB-to-IP TrustZone (AIPS-TZ) initialization routine. Setting up the AIPSTZ controller is required to inform the SoC interconnect fabric which bus-masters can read/write and if the read/writes are buffered. For our purposes the initial configuration is for everything to be open. We can lock-down later on as necessary. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-09-04imx: imx_io_mux: Define an IO-mux layerBryan O'Donoghue
This patch defines: - The full range of IO-mux register offsets relative to the base address of the IO-mux block base address. - The bits for muxing the UART1 TX/RX lines. - The bits for muxing the UART6 TX/RX lines. - The pad control pad bits for the UART Two functions are provided to configure pad muxes: - void io_muxc_set_pad_alt_function(pad_mux_offset, alt_function) Takes a pad_mux_offset and sets the alt_function bit-mask supplied. This will have the effect of switching the pad into one of its defined peripheral functions. These peripheral function modes are defined in the NXP documentation and need to be referred to in order to correctly configure a new alternative-function. - void io_muxc_set_pad_features(pad_feature_offset, pad_features) Takes a pad_feature_offset and applies a pad_features bit-mask to the indicated pad. This function allows the setting of PAD drive-strength, pull-up values, hysteresis glitch filters and slew-rate settings. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
2018-09-04imx7: imx7_clock: usb: Initialize the USB core clocksBryan O'Donoghue
This patch initializes USB core clocks for the i.MX7. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>