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authorPali Rohár <pali.rohar@gmail.com>2013-09-18 23:43:56 +0400
committerTony Lindgren <tony@atomide.com>2013-10-08 22:57:04 +0400
commit4748a7240284b0f68bd47a66365c2cd561939830 (patch)
treeafcfc03b29c7aa47fd48acfac02a770bc676d871 /arch/arm/mach-omap2/omap-secure.h
parenta33f1788192d13165594f8ec6975dbae34502ec9 (diff)
downloadlinux-4748a7240284b0f68bd47a66365c2cd561939830.tar.xz
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.h11
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