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fix(el3-spm): fix LSP direct message response

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Ensure that the example LSP correctly sets the
sender/receiver field in a direct response.

Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: I482c08d4657617adb00b0f3cf3c8ddc84f1bf7c8
This commit is contained in:
Marc Bonnici 2022-11-15 11:20:59 +00:00
parent 48fe24c50c
commit c040621dba
1 changed files with 8 additions and 3 deletions
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11
plat/arm/board/fvp/fvp_el3_spmc_logical_sp.c
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@ -27,6 +27,7 @@ static uint64_t handle_ffa_direct_request(uint32_t smc_fid, bool secure_origin,
void *handle, uint64_t flags) void *handle, uint64_t flags)
{ {
uint64_t ret; uint64_t ret;
uint32_t src_dst;
/* Determine if we have a 64 or 32 direct request. */ /* Determine if we have a 64 or 32 direct request. */
if (smc_fid == FFA_MSG_SEND_DIRECT_REQ_SMC32) { if (smc_fid == FFA_MSG_SEND_DIRECT_REQ_SMC32) {
@ -36,18 +37,22 @@ static uint64_t handle_ffa_direct_request(uint32_t smc_fid, bool secure_origin,
} else { } else {
panic(); /* Unknown SMC. */ panic(); /* Unknown SMC. */
} }
/* /*
* Handle the incoming request. For testing purposes we echo the * Handle the incoming request. For testing purposes we echo the
* incoming message. * incoming message.
*/ */
INFO("Logical Partition: Received Direct Request from %s world!\n", INFO("LSP: Received Direct Request from %s world (0x%x)\n",
secure_origin ? "Secure" : "Normal"); secure_origin ? "Secure" : "Normal", ffa_endpoint_source(x1));
/* Populate the source and destination IDs. */
src_dst = (uint32_t) LP_PARTITION_ID << FFA_DIRECT_MSG_SOURCE_SHIFT |
ffa_endpoint_source(x1) << FFA_DIRECT_MSG_DESTINATION_SHIFT;
/* /*
* Logical SP's must always send a direct response so we can populate * Logical SP's must always send a direct response so we can populate
* our response directly. * our response directly.
*/ */
SMC_RET8(handle, ret, 0, 0, x4, 0, 0, 0, 0); SMC_RET8(handle, ret, src_dst, 0, x4, 0, 0, 0, 0);
} }
/* Register logical partition */ /* Register logical partition */