Hi, This is the second part of the series [1] and depends on it. It adds remoteproc support for the PRU processor cores present in the PRU-ICSS subsystem on TI SoCs. The PRU remoteproc driver uses the standard remoteproc core ELF loader. However, the PRUs do not have a unified address space, (has an Instruction RAM and a primary Data RAM at both 0x0) and leverage an added .da_to_va ops to use the standard ELF loader. This remoteproc driver does not have support for error recovery and system suspend/resume features. Different compatibles are used to allow providing scalability for instance-specific device data if needed. The driver uses a default firmware-name retrieved from device-tree, and the firmwares are expected to be present in the standard Linux firmware search paths. They can also be adjusted by userspace if required through the sysfs interface provided by the remoteproc core. The PRU remoteproc driver uses a client-driven boot methodology - it does _not_ support auto-boot so that the PRU load and boot is dictated by the corresponding client drivers for achieving various usecases. This allows flexibility for the client drivers or applications to set a firmware name (if needed) based on their desired functionality and boot the PRU. Finally it adds some helper APIs for client drivers to set PRU specific settings .e.g Constant Table, GPI mode, etc. Testing: To test the code with example firmware you can try the LAB5 tutorial http://processors.wiki.ti.com/index.php/PRU_Training:_Hands-on_Labs#LAB_5:_RPMsg_Communication_between_ARM_and_PRU with the pru-software-support package at [2] and the sample rpmsg-client driver. NOTE: you no longer need to build and run PRU_Halt example as shown in the tutorial. cheers, -roger [1] https://lkml.org/lkml/2018/11/22/948 [2] https://github.com/rogerq/pru-software-support-package/commits/upstream/pruss Roger Quadros (2): remoteproc/pru: Add pru_rproc_set_ctable() function remoteproc/pru: Add support for INTC Interrupt map resource Suman Anna (9): remoteproc: Extend rproc_da_to_va() API with a flags parameter remoteproc: Add a rproc_set_firmware() API remoteproc: Add support to handle device specific resource types remoteproc/pru: Add PRU remoteproc driver remoteproc/pru: Add pru-specific debugfs support dt-bindings: remoteproc: ti-pruss: Update bindings for supporting rpmsg remoteproc/pru: Add support for virtio rpmsg stack remoteproc/pru: add pru_rproc_get_id() API to retrieve the PRU id soc: ti: pruss: add helper functions to set GPI mode, MII_RT_event and XFR Tero Kristo (5): remoteproc/pru: add APIs to get and put the PRU cores dt-bindings: remoteproc: ti-pruss: Document application node bindings remoteproc/pru: add support for configuring GPMUX based on client setup remoteproc/pru: configure firmware based on client setup remoteproc/pru: add support for parsing pru interrupt mapping from DT .../devicetree/bindings/soc/ti/ti,pruss.txt | 82 ++ drivers/remoteproc/Kconfig | 16 + drivers/remoteproc/Makefile | 1 + drivers/remoteproc/imx_rproc.c | 2 +- drivers/remoteproc/keystone_remoteproc.c | 3 +- drivers/remoteproc/pru_rproc.c | 1138 ++++++++++++++++++++ drivers/remoteproc/pru_rproc.h | 55 + drivers/remoteproc/qcom_q6v5_mss.c | 5 +- drivers/remoteproc/qcom_q6v5_pas.c | 2 +- drivers/remoteproc/qcom_q6v5_wcss.c | 2 +- drivers/remoteproc/qcom_wcnss.c | 2 +- drivers/remoteproc/remoteproc_core.c | 112 +- drivers/remoteproc/remoteproc_debugfs.c | 3 + drivers/remoteproc/remoteproc_elf_loader.c | 6 +- drivers/remoteproc/remoteproc_internal.h | 2 +- drivers/remoteproc/remoteproc_sysfs.c | 33 +- drivers/remoteproc/st_slim_rproc.c | 3 +- drivers/remoteproc/wkup_m3_rproc.c | 3 +- include/linux/pruss.h | 168 +++ include/linux/remoteproc.h | 32 +- 20 files changed, 1620 insertions(+), 50 deletions(-) create mode 100644 drivers/remoteproc/pru_rproc.c create mode 100644 drivers/remoteproc/pru_rproc.h -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
