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Message-Id: <1373461145-9812-2-git-send-email-pali.rohar@gmail.com>
Date: Wed, 10 Jul 2013 14:59:04 +0200
From: Pali Rohár <pali.rohar@...il.com>
To: linux-kernel@...r.kernel.org, Tony Lindgren <tony@...mide.com>,
Aaro Koskinen <aaro.koskinen@....fi>
Cc: linux-omap@...r.kernel.org, linux@....linux.org.uk,
linux-arm-kernel@...ts.infradead.org, Nishanth Menon <nm@...com>,
Pavel Machek <pavel@....cz>,
Peter De Schrijver <pdeschrijver@...dia.com>,
Santosh Shilimkar <santosh.shilimkar@...com>,
Ivaylo Dimitrov <freemangordon@....bg>,
Pali Rohár <pali.rohar@...il.com>
Subject: [PATCH v2 1/2] ARM: OMAP: Add secure function omap_smc3() which calling instruction smc #1
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@....bg>
Signed-off-by: Pali Rohár <pali.rohar@...il.com>
---
arch/arm/mach-omap2/omap-secure.h | 1 +
arch/arm/mach-omap2/omap-smc.S | 22 +++++++++++++++++++++-
2 files changed, 22 insertions(+), 1 deletion(-)
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..5c02b8d 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@...com>
*
+ * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@....bg>
+ * Copyright (C) 2013 Pali Rohár <pali.rohar@...il.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 +56,24 @@ 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-r12, lr}
+ mov r12, r0 @ Copy the secure service ID
+ mov r6, #0xff @ Indicate new Task call
+ dsb
+ dmb
+ smc #1 @ call PPA service
+ ldmfd sp!, {r4-r12, pc}
+ENDPROC(omap_smc3)
+
ENTRY(omap_modify_auxcoreboot0)
stmfd sp!, {r1-r12, lr}
ldr r12, =0x104
--
1.7.10.4
--
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