diff options
| author | Greg Bellows <greg.bellows@linaro.org> | 2014-12-15 17:09:47 -0600 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-12-22 23:12:28 +0000 |
| commit | c8e829b7bf6e1c84af8b4b13ee7fce2959c63e0e (patch) | |
| tree | f4b2df43f41085ae6921a0efaa2f16f79ac200c6 /hw/arm/boot.c | |
| parent | 51942aee3c51ca23b0dd78f95534a57e8dc1e582 (diff) | |
target-arm: Add arm_boot_info secure_boot control
Adds the secure_boot boolean field to the arm_boot_info descriptor. This
fields is used to indicate whether Linux should boot into secure or non-secure
state if the ARM EL3 feature is enabled. The default is to leave the CPU in an
unaltered reset state. On EL3 enabled systems, the reset state is secure and
can be overridden by setting the added field to false.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1418684992-8996-11-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm/boot.c')
| -rw-r--r-- | hw/arm/boot.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/hw/arm/boot.c b/hw/arm/boot.c index e6a3c5bcfb..c8d1d4e147 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -457,6 +457,16 @@ static void do_cpu_reset(void *opaque) env->thumb = info->entry & 1; } } else { + /* If we are booting Linux then we need to check whether we are + * booting into secure or non-secure state and adjust the state + * accordingly. Out of reset, ARM is defined to be in secure state + * (SCR.NS = 0), we change that here if non-secure boot has been + * requested. + */ + if (arm_feature(env, ARM_FEATURE_EL3) && !info->secure_boot) { + env->cp15.scr_el3 |= SCR_NS; + } + if (CPU(cpu) == first_cpu) { if (env->aarch64) { env->pc = info->loader_start; |