Prevent RAS register access from lower ELs

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LuminaSensum / arm-trusted-firmware

Browse code Prevent RAS register access from lower ELs This patch adds a build config 'RAS_TRAP_LOWER_EL_ERR_ACCESS' to set SCR_EL3.TERR during CPU boot. This bit enables trapping RAS register accesses from EL1 or EL2 to EL3. RAS_TRAP_LOWER_EL_ERR_ACCESS is disabled by default. Signed-off-by: Varun Wadekar <vwadekar@nvidia.com> Change-Id: Ifb0fb0afedea7dd2a29a0b0491a1161ecd241438 master v2.4-LS
1 parent 0d85119 commit fbc44bd1bbbafe01848afd009d507b595b264b5f Varun Wadekar authored on 12 Jun 2020

Browse code

This patch adds a build config 'RAS_TRAP_LOWER_EL_ERR_ACCESS' to set
SCR_EL3.TERR during CPU boot. This bit enables trapping RAS register
accesses from EL1 or EL2 to EL3.

RAS_TRAP_LOWER_EL_ERR_ACCESS is disabled by default.

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: Ifb0fb0afedea7dd2a29a0b0491a1161ecd241438

master v2.4-LS

1 parent 0d85119 commit fbc44bd1bbbafe01848afd009d507b595b264b5f

Varun Wadekar authored on 12 Jun 2020

Patch

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Ignore Space Show notes View include/arch/aarch64/arch.h

Ignore Space Show notes View lib/el3_runtime/aarch64/context_mgmt.c

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