From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Ben Dooks <ben.dooks@codethink.co.uk>
Cc: "Pali Rohár" <pali.rohar@gmail.com>,
"Dave Martin" <Dave.Martin@arm.com>,
tony@atomide.com, nm@ti.com, aaro.koskinen@iki.fi,
pdeschrijver@nvidia.com, linux-kernel@vger.kernel.org,
"Ивайло Димитров" <freemangordon@abv.bg>,
santosh.shilimkar@ti.com, pavel@ucw.cz,
linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 1/2] ARM: OMAP: Add secure function omap_smc3() which calling instruction smc #1
Date: Tue, 8 Oct 2013 09:09:08 +0100 [thread overview]
Message-ID: <20131008080908.GA25039@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <5253B08C.4020305@codethink.co.uk>
On Tue, Oct 08, 2013 at 09:13:16AM +0200, Ben Dooks wrote:
> On 08/09/13 09:43, Pali Rohár wrote:
>> 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
>
> I think you should save r12 in the call.
Not necessary.
next prev parent reply other threads:[~2013-10-08 8:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-04 12:43 [PATCH v3 1/2] ARM: OMAP: Add secure function omap_smc3() which calling instruction smc #1 Dave Martin
2013-09-08 7:43 ` [PATCH v4 " Pali Rohár
2013-09-14 9:37 ` Pali Rohár
2013-10-08 7:13 ` Ben Dooks
2013-10-08 8:09 ` Russell King - ARM Linux [this message]
2013-10-08 19:05 ` Tony Lindgren
-- strict thread matches above, loose matches on Subject: below --
2013-09-16 17:10 Dave Martin
2013-09-17 15:43 ` Tony Lindgren
2013-09-17 15:53 ` Pali Rohár
2013-09-17 23:17 ` Tony Lindgren
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