linux-kernel - [PATCH v3 0/2] provide imx rproc driver

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Date:   Thu, 17 Aug 2017 09:15:24 +0200
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>,
        devicetree@...r.kernel.org, kernel@...gutronix.de,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <fabio.estevam@....com>,
        linux-remoteproc@...r.kernel.org, linux@...pel-privat.de
Subject: [PATCH v3 0/2] provide imx rproc driver

this patch set to provide remoteproc functionality on
i.MX7D SoC.

For testing I used this simple counter written in ASM:
======================================
        .syntax unified
        .text
        .thumb
        .int 0x10020000                 @ Initial SP value
        .int reset + 1

reset:

        mov     r0, #0x55
        ldr     r1, =(0x40)
1:
        str     r0, [r1]
        add     r0, 1
        b       1b

        /* Dummy data, required by remoteproc loader */
        /* Please FIXME, this part seem to be incorrect */
        .data
        .section .resource_table, "aw"
        .word   1, 0, 0, 0      /* struct resource_table base */
        .word   0               /* uint32_t offset[1] */
============================================================
compiled with:
${CROSS}as -o imx7m4.o imx7m4.S
${CROSS}ld -Ttext=0x0 -o imx7m4.elf imx7m4.o
cp imx7m4.elf /srv/nfs/sid-armhf/lib/firmware/rproc-imx_rproc-fw

Functionality was confirmed with current OpenOCD master.
OpenOCD cfg file can be found here:
https://github.com/olerem/openocd/blob/imx7-2017.06.14/tcl/target/imx7.cfg

changes:
v3:
 - rename rproc to cm4 (Cortex M4)

v2:
 - use memory-region instead of reg property
 - remove memory ranges from documentation

Oleksij Rempel (2):
  remoteproc: dt: Provide bindings for iMX6SX/7D Remote Processor
    Controller driver
  remoteproc: imx_rproc: add a NXP/Freescale imx_rproc driver

 .../devicetree/bindings/remoteproc/imx-rproc.txt   |  33 ++
 drivers/remoteproc/Kconfig                         |  10 +
 drivers/remoteproc/Makefile                        |   1 +
 drivers/remoteproc/imx_rproc.c                     | 426 +++++++++++++++++++++
 4 files changed, 470 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/imx-rproc.txt
 create mode 100644 drivers/remoteproc/imx_rproc.c

-- 
2.11.0