diff options
| author | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2019-01-31 11:01:26 +0000 |
|---|---|---|
| committer | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2019-02-27 11:58:10 +0000 |
| commit | 88cfd9a604cee29cc6536a43cd136b7eef0b78b9 (patch) | |
| tree | 532afae2b89a70c75b7d3389c34c78ac715744e6 /bl31/bl31_main.c | |
| parent | dcbfa11bd96af98dbb93df3410008f025a131d59 (diff) | |
BL31: Enable pointer authentication support
The size increase after enabling options related to ARMv8.3-PAuth is:
+----------------------------+-------+-------+-------+--------+
| | text | bss | data | rodata |
+----------------------------+-------+-------+-------+--------+
| CTX_INCLUDE_PAUTH_REGS = 1 | +192 | +1536 | +0 | +0 |
| | 0.3% | 3.1% | | |
+----------------------------+-------+-------+-------+--------+
| ENABLE_PAUTH = 1 | +1848 | +1536 | +16 | +0 |
| | 3.3% | 3.1% | 3.1% | |
+----------------------------+-------+-------+-------+--------+
Results calculated with the following build configuration:
make PLAT=fvp SPD=tspd DEBUG=1 \
SDEI_SUPPORT=1 \
EL3_EXCEPTION_HANDLING=1 \
TSP_NS_INTR_ASYNC_PREEMPT=1 \
CTX_INCLUDE_PAUTH_REGS=1 \
ENABLE_PAUTH=1
Change-Id: I43db7e509a4f39da6599ec2faa690d197573ec1b
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Diffstat (limited to 'bl31/bl31_main.c')
| -rw-r--r-- | bl31/bl31_main.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/bl31/bl31_main.c b/bl31/bl31_main.c index da35f75e..aca16d67 100644 --- a/bl31/bl31_main.c +++ b/bl31/bl31_main.c @@ -64,6 +64,27 @@ void __init bl31_lib_init(void) } /******************************************************************************* + * Setup function for BL31. + ******************************************************************************/ +void bl31_setup(u_register_t arg0, u_register_t arg1, u_register_t arg2, + u_register_t arg3) +{ + /* Perform early platform-specific setup */ + bl31_early_platform_setup2(arg0, arg1, arg2, arg3); + + /* + * Update pointer authentication key before the MMU is enabled. It is + * saved in the rodata section, that can be writen before enabling the + * MMU. This function must be called after the console is initialized + * in the early platform setup. + */ + bl_handle_pauth(); + + /* Perform late platform-specific setup */ + bl31_plat_arch_setup(); +} + +/******************************************************************************* * BL31 is responsible for setting up the runtime services for the primary cpu * before passing control to the bootloader or an Operating System. This * function calls runtime_svc_init() which initializes all registered runtime |