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    Subject[PATCH v4 1/2] ARM: OMAP: Add secure function omap_smc3() which calling instruction smc #1
    Date
    Here is new version (v4) of omap secure part patch:

    Other secure functions omap_smc1() and omap_smc2() calling instruction smc #0
    but Nokia RX-51 board needs to call smc #1 for PPA access.

    Signed-off-by: Ivaylo Dimitrov <freemangordon@abv.bg>
    Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
    ---
    diff --git a/arch/arm/mach-omap2/omap-secure.h b/arch/arm/mach-omap2/omap-secure.h
    index 0e72917..c4586f4 100644
    --- a/arch/arm/mach-omap2/omap-secure.h
    +++ b/arch/arm/mach-omap2/omap-secure.h
    @@ -51,6 +51,7 @@
    extern u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs,
    u32 arg1, u32 arg2, u32 arg3, u32 arg4);
    extern u32 omap_smc2(u32 id, u32 falg, u32 pargs);
    +extern u32 omap_smc3(u32 id, u32 process, u32 flag, u32 pargs);
    extern phys_addr_t omap_secure_ram_mempool_base(void);
    extern int omap_secure_ram_reserve_memblock(void);

    diff --git a/arch/arm/mach-omap2/omap-smc.S b/arch/arm/mach-omap2/omap-smc.S
    index f6441c1..fd90125 100644
    --- a/arch/arm/mach-omap2/omap-smc.S
    +++ b/arch/arm/mach-omap2/omap-smc.S
    @@ -1,9 +1,11 @@
    /*
    - * OMAP44xx secure APIs file.
    + * OMAP34xx and OMAP44xx secure APIs file.
    *
    * Copyright (C) 2010 Texas Instruments, Inc.
    * Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
    *
    + * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
    + * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
    *
    * This program is free software,you can redistribute it and/or modify
    * it under the terms of the GNU General Public License version 2 as
    @@ -54,6 +56,23 @@ ENTRY(omap_smc2)
    ldmfd sp!, {r4-r12, pc}
    ENDPROC(omap_smc2)

    +/**
    + * u32 omap_smc3(u32 service_id, u32 process_id, u32 flag, u32 pargs)
    + * Low level common routine for secure HAL and PPA APIs via smc #1
    + * r0 - @service_id: Secure Service ID
    + * r1 - @process_id: Process ID
    + * r2 - @flag: Flag to indicate the criticality of operation
    + * r3 - @pargs: Physical address of parameter list
    + */
    +ENTRY(omap_smc3)
    + stmfd sp!, {r4-r11, lr}
    + mov r12, r0 @ Copy the secure service ID
    + mov r6, #0xff @ Indicate new Task call
    + dsb @ Memory Barrier (not sure if needed, copied from omap_smc2)
    + smc #1 @ Call PPA service
    + ldmfd sp!, {r4-r11, pc}
    +ENDPROC(omap_smc3)
    +
    ENTRY(omap_modify_auxcoreboot0)
    stmfd sp!, {r1-r12, lr}
    ldr r12, =0x104

    --
    Pali Rohár
    pali.rohar@gmail.com
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