diff options
| author | Pali Rohár <pali.rohar@gmail.com> | 2013-09-18 21:43:56 +0200 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2013-10-08 20:57:04 +0200 |
| commit | 4748a7240284b0f68bd47a66365c2cd561939830 (patch) | |
| tree | afcfc03b29c7aa47fd48acfac02a770bc676d871 /arch/arm/mach-omap2/omap-secure.h | |
| parent | ARM: OMAP3: Add secure function omap_smc3() which calling instruction smc #1 (diff) | |
| download | linux-4748a7240284b0f68bd47a66365c2cd561939830.tar.xz linux-4748a7240284b0f68bd47a66365c2cd561939830.zip | |
ARM: OMAP3: RX-51: ARM errata 430973 workaround
Closed and signed Nokia X-Loader bootloader stored in RX-51 nand does not set
IBE bit in ACTLR and starting kernel in non-secure mode. So direct write to
ACTLR by our kernel does not working and the code for ARM errata 430973 in
commit 7ce236fcd6fd45b0441a2d49acb2ceb2de2e8a47 that sets IBE bit is a noop.
In order to have workaround for ARM errata 430973 from non-secure world on
RX-51 we needs Secure Monitor Call to set IBE BIT in ACTLR.
This patch adds RX-51 specific secure support code and sets IBE bit in ACTLR
during board init code for ARM errata 430973 workaround.
Note that new function rx51_secure_dispatcher() differs from existing
omap_secure_dispatcher(). It calling omap_smc3() and param[0] is nargs+1.
ARM errata 430973 workaround is needed for thumb-2 ISA compiled userspace
binaries. Without this workaround thumb-2 binaries crashing. So with this
patch it is possible to recompile and run applications/binaries with thumb-2
ISA on RX-51.
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>
Diffstat (limited to 'arch/arm/mach-omap2/omap-secure.h')
| -rw-r--r-- | arch/arm/mach-omap2/omap-secure.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap-secure.h b/arch/arm/mach-omap2/omap-secure.h index c4586f42ea98..51b59c686a53 100644 --- a/arch/arm/mach-omap2/omap-secure.h +++ b/arch/arm/mach-omap2/omap-secure.h @@ -3,6 +3,8 @@ * * Copyright (C) 2011 Texas Instruments, Inc. * 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 @@ -46,6 +48,11 @@ #define OMAP4_PPA_L2_POR_INDEX 0x23 #define OMAP4_PPA_CPU_ACTRL_SMP_INDEX 0x25 +/* Secure RX-51 PPA (Primary Protected Application) APIs */ +#define RX51_PPA_HWRNG 29 +#define RX51_PPA_L2_INVAL 40 +#define RX51_PPA_WRITE_ACR 42 + #ifndef __ASSEMBLER__ extern u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, @@ -55,6 +62,10 @@ 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); +extern u32 rx51_secure_dispatcher(u32 idx, u32 process, u32 flag, u32 nargs, + u32 arg1, u32 arg2, u32 arg3, u32 arg4); +extern u32 rx51_secure_update_aux_cr(u32 set_bits, u32 clear_bits); + #ifdef CONFIG_OMAP4_ERRATA_I688 extern int omap_barrier_reserve_memblock(void); #else |