From: Abdellatif El Khlifi abdellatif.elkhlifi@arm.com
Add FFA_MEM_RECLAIM support to the FF-A emulator
Signed-off-by: Abdellatif El Khlifi abdellatif.elkhlifi@arm.com --- drivers/firmware/arm-ffa/ffa-emul-uclass.c | 43 ++++++++++++++++++++++ drivers/firmware/arm-ffa/sandbox_ffa.c | 1 + 2 files changed, 44 insertions(+)
diff --git a/drivers/firmware/arm-ffa/ffa-emul-uclass.c b/drivers/firmware/arm-ffa/ffa-emul-uclass.c index a859d2e26cc..b628e2c5c63 100644 --- a/drivers/firmware/arm-ffa/ffa-emul-uclass.c +++ b/drivers/firmware/arm-ffa/ffa-emul-uclass.c @@ -604,6 +604,46 @@ feedback: return ret; }
+/** + * sandbox_ffa_memory_reclaim() - Emulated FFA_MEM_RECLAIM handler + * @emul: The sandbox FF-A emulator device + * @pargs: The SMC call input arguments a0-a7 + * @res: The SMC return data + * + * Emulate FFA_MEM_RECLAIM FF-A function. + * + * Return: + * + * 0 on success. Otherwise, failure + */ +static int sandbox_ffa_memory_reclaim(struct udevice *emul, ffa_value_t *pargs, + ffa_value_t *res) +{ + int ret; + + if (pargs->a1 != SANDBOX_MEM_HANDLE || + pargs->a2 != SANDBOX_MEM_HANDLE) { + res->a0 = FFA_SMC_32(FFA_ERROR); + res->a2 = -INVALID_PARAMETERS; + ret = ffa_to_std_errmap[INVALID_PARAMETERS]; + goto feedback; + } + + res->a0 = FFA_SMC_32(FFA_SUCCESS); + res->a2 = 0; + ret = 0; + +feedback: + + res->a1 = 0; + res->a3 = 0; + + /* x4-x7 MBZ */ + memset(FFA_X4X7_MBZ_REG_START, 0, FFA_X4X7_MBZ_CNT * sizeof(ulong)); + + return ret; +} + /** * sandbox_query_ffa_emul_state() - Inspect the FF-A ABIs * @queried_func_id: The FF-A function to be queried @@ -697,6 +737,9 @@ void sandbox_arm_ffa_smccc_smc(ffa_value_t *args, ffa_value_t *res) case FFA_SMC_32(FFA_MEM_SHARE): ret = sandbox_ffa_memory_share(emul, args, res); break; + case FFA_SMC_32(FFA_MEM_RECLAIM): + ret = sandbox_ffa_memory_reclaim(emul, args, res); + break; default: log_err("Undefined FF-A interface (%lx)\n", args->a0); diff --git a/drivers/firmware/arm-ffa/sandbox_ffa.c b/drivers/firmware/arm-ffa/sandbox_ffa.c index a81455ce5ff..8af9c8ac005 100644 --- a/drivers/firmware/arm-ffa/sandbox_ffa.c +++ b/drivers/firmware/arm-ffa/sandbox_ffa.c @@ -92,6 +92,7 @@ static const struct ffa_bus_ops sandbox_ffa_ops = { .sync_send_receive = ffa_msg_send_direct_req_hdlr, .rxtx_unmap = ffa_unmap_rxtx_buffers_hdlr, .memory_share = ffa_memory_share_hdlr, + .memory_reclaim = ffa_memory_reclaim_hdlr, };
static const struct udevice_id sandbox_ffa_id[] = {