Searched hist:"4748 a7240284b0f68bd47a66365c2cd561939830" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/arch/arm/mach-omap2/ |
| H A D | omap-secure.c | diff 4748a7240284b0f68bd47a66365c2cd561939830 Wed Sep 18 14:43:56 CDT 2013 Pali Rohár <pali.rohar@gmail.com> 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>
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| H A D | omap-secure.h | diff 4748a7240284b0f68bd47a66365c2cd561939830 Wed Sep 18 14:43:56 CDT 2013 Pali Rohár <pali.rohar@gmail.com> 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>
|