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ARM: OMAP3: Add secure function omap_smc3() which calling instruction smc #1

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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>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Pali Rohár 2013-09-08 09:43:29 +02:00 committed by Tony Lindgren
parent d0e639c9e0
commit a33f178819
2 changed files with 21 additions and 1 deletions
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1
arch/arm/mach-omap2/omap-secure.h
View File

@ -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);

21
arch/arm/mach-omap2/omap-smc.S
View File

@ -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