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SPMD: add generic SPD PM handlers 

This patch defines and registers the SPMD PM handler hooks.
This is intended to relay boot and PM events to the SPMC.

Change-Id: If5a758d22b8d2152cbbb83a0cad563b5e1c6bd49
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Signed-off-by: Max Shvetsov <maksims.svecovs@arm.com>
This commit is contained in:
Olivier Deprez 2019-10-28 09:07:50 +00:00 committed by Max Shvetsov
parent 9dcf63dd8b
commit b058f20a7e
1 changed files with 41 additions and 0 deletions
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41
services/std_svc/spmd/spmd_pm.c Normal file
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/*
* Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include "spmd_private.h"
/*******************************************************************************
* This CPU has been turned on. Enter SPMC to initialise S-EL1 or S-EL2. As part
* of the SPMC initialization path, they will initialize any SPs that they
* manage. Entry into SPMC is done after initialising minimal architectural
* state that guarantees safe execution.
******************************************************************************/
static void spmd_cpu_on_finish_handler(u_register_t unused)
{
unsigned int linear_id = plat_my_core_pos();
spmd_spm_core_context_t *ctx = spmd_get_context();
int rc;
assert(ctx->state != SPMC_STATE_ON);
rc = spmd_spm_core_sync_entry(ctx);
if (rc != 0) {
ERROR("SPMC initialisation failed (%d) on CPU%u\n", rc,
linear_id);
ctx->state = SPMC_STATE_OFF;
return;
}
ctx->state = SPMC_STATE_ON;
}
/*******************************************************************************
* Structure populated by the SPM Dispatcher to perform any bookkeeping before
* PSCI executes a power mgmt. operation.
******************************************************************************/
const spd_pm_ops_t spmd_pm = {
.svc_on_finish = spmd_cpu_on_finish_handler,
};