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| author | Raghu Krishnamurthy <raghu.ncstate@gmail.com> | 2022-12-25 13:02:00 -0800 |
|---|---|---|
| committer | Raghu Krishnamurthy <raghu.ncstate@gmail.com> | 2023-02-13 08:47:41 -0800 |
| commit | eaaf517cd1bd8c9d5e3e6d2d202a69a0cbcb45bf (patch) | |
| tree | 19c72d76d940c459c3482b29b6f6a485d3aabeaa /include/arch | |
| parent | ec1c00a79c92c65bd568a2251ce614eae7eb7c77 (diff) | |
| download | arm-trusted-firmware-eaaf517cd1bd8c9d5e3e6d2d202a69a0cbcb45bf.tar.gz | |
feat(spmd): introduce FFA_PARTITION_INFO_GET_REGS
Add code in SPMD to forward calls to FFA_PARTITION_INFO_GET_REGS. This
is a new ABI that allows getting partition information without the need
for rx/tx buffer, that helps in situations where having an rx/tx buffer
mapped and available is difficult (ex. uefi runtime services).
Currently, the spmc at el3 does not support this new ABI.
The new ABI uses registers x8-x17 to return partition information so
changes are made to ensure those registers are passed through to the
SPMC and restored on the return path.
Signed-off-by: Raghu Krishnamurthy <raghu.ncstate@gmail.com>
Change-Id: I1fe5956763e054e4f8d62292fc1247e7120bb5a4
Diffstat (limited to 'include/arch')
| -rw-r--r-- | include/arch/aarch64/smccc_helpers.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/arch/aarch64/smccc_helpers.h b/include/arch/aarch64/smccc_helpers.h index 920f2943e..950a811d6 100644 --- a/include/arch/aarch64/smccc_helpers.h +++ b/include/arch/aarch64/smccc_helpers.h @@ -75,6 +75,24 @@ #define SMC_SET_GP(_h, _g, _v) \ write_ctx_reg((get_gpregs_ctx(_h)), (_g), (_v)) + +/* Useful for SMCCCv1.2 */ +#define SMC_RET18(_h, _x0, _x1, _x2, _x3, _x4, _x5, _x6, _x7, _x8, _x9, \ + _x10, _x11, _x12, _x13, _x14, _x15, _x16, _x17) { \ + SMC_SET_GP(_h, CTX_GPREG_X8, _x8); \ + SMC_SET_GP(_h, CTX_GPREG_X9, _x9); \ + SMC_SET_GP(_h, CTX_GPREG_X10, _x10); \ + SMC_SET_GP(_h, CTX_GPREG_X11, _x11); \ + SMC_SET_GP(_h, CTX_GPREG_X12, _x12); \ + SMC_SET_GP(_h, CTX_GPREG_X13, _x13); \ + SMC_SET_GP(_h, CTX_GPREG_X14, _x14); \ + SMC_SET_GP(_h, CTX_GPREG_X15, _x15); \ + SMC_SET_GP(_h, CTX_GPREG_X16, _x16); \ + SMC_SET_GP(_h, CTX_GPREG_X17, _x17); \ + SMC_RET8(_h, (_x0), (_x1), (_x2), (_x3), (_x4), (_x5), (_x6), \ + (_x7)); \ +} + /* * Convenience macros to access EL3 context registers using handle provided to * SMC handler. These take the offset values defined in context.h |