mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-08-18 10:27:06 +02:00
09d40e0e08
Enforce full include path for includes. Deprecate old paths.
The following folders inside include/lib have been left unchanged:
- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}
The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).
For example, this patch had to be created because two headers were
called the same way: e0ea0928d5 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3a2 ("drivers: add tzc380 support").
This problem was introduced in commit 4ecca33988 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.
Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.
Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <assert.h>
|
|
|
|
#include <arch_helpers.h>
|
|
#include <common/bl_common.h>
|
|
#include <common/debug.h>
|
|
#include <lib/el3_runtime/context_mgmt.h>
|
|
#include <lib/psci/psci.h>
|
|
#include <tlk.h>
|
|
|
|
#include "tlkd_private.h"
|
|
|
|
extern tlk_context_t tlk_ctx;
|
|
|
|
#define MPIDR_CPU0 0x80000000
|
|
|
|
/*******************************************************************************
|
|
* Return the type of payload TLKD is dealing with. Report the current
|
|
* resident cpu (mpidr format) if it is a UP/UP migratable payload.
|
|
******************************************************************************/
|
|
static int32_t cpu_migrate_info(u_register_t *resident_cpu)
|
|
{
|
|
/* the payload runs only on CPU0 */
|
|
*resident_cpu = MPIDR_CPU0;
|
|
|
|
/* Uniprocessor, not migrate capable payload */
|
|
return PSCI_TOS_NOT_UP_MIG_CAP;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* This cpu is being suspended. Inform TLK of the SYSTEM_SUSPEND event, so
|
|
* that it can pass this information to its Trusted Apps.
|
|
******************************************************************************/
|
|
static void cpu_suspend_handler(u_register_t suspend_level)
|
|
{
|
|
gp_regs_t *gp_regs;
|
|
int cpu = read_mpidr() & MPIDR_CPU_MASK;
|
|
int32_t rc = 0;
|
|
|
|
/*
|
|
* TLK runs only on CPU0 and suspends its Trusted Apps during
|
|
* SYSTEM_SUSPEND. It has no role to play during CPU_SUSPEND.
|
|
*/
|
|
if ((cpu != 0) || (suspend_level != PLAT_MAX_PWR_LVL))
|
|
return;
|
|
|
|
/* pass system suspend event to TLK */
|
|
gp_regs = get_gpregs_ctx(&tlk_ctx.cpu_ctx);
|
|
write_ctx_reg(gp_regs, CTX_GPREG_X0, TLK_SYSTEM_SUSPEND);
|
|
|
|
/* Program the entry point and enter TLK */
|
|
rc = tlkd_synchronous_sp_entry(&tlk_ctx);
|
|
|
|
/*
|
|
* Read the response from TLK. A non-zero return means that
|
|
* something went wrong while communicating with it.
|
|
*/
|
|
if (rc != 0)
|
|
panic();
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* This cpu is being resumed. Inform TLK of the SYSTEM_SUSPEND exit, so
|
|
* that it can pass this information to its Trusted Apps.
|
|
******************************************************************************/
|
|
static void cpu_resume_handler(u_register_t suspend_level)
|
|
{
|
|
gp_regs_t *gp_regs;
|
|
int cpu = read_mpidr() & MPIDR_CPU_MASK;
|
|
int32_t rc = 0;
|
|
|
|
/*
|
|
* TLK runs only on CPU0 and resumes its Trusted Apps during
|
|
* SYSTEM_SUSPEND exit. It has no role to play during CPU_SUSPEND
|
|
* exit.
|
|
*/
|
|
if ((cpu != 0) || (suspend_level != PLAT_MAX_PWR_LVL))
|
|
return;
|
|
|
|
/* pass system resume event to TLK */
|
|
gp_regs = get_gpregs_ctx(&tlk_ctx.cpu_ctx);
|
|
write_ctx_reg(gp_regs, CTX_GPREG_X0, TLK_SYSTEM_RESUME);
|
|
|
|
/* Program the entry point and enter TLK */
|
|
rc = tlkd_synchronous_sp_entry(&tlk_ctx);
|
|
|
|
/*
|
|
* Read the response from TLK. A non-zero return means that
|
|
* something went wrong while communicating with it.
|
|
*/
|
|
if (rc != 0)
|
|
panic();
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* System is about to be reset. Inform the SP to allow any book-keeping
|
|
******************************************************************************/
|
|
static void system_off_handler(void)
|
|
{
|
|
int cpu = read_mpidr() & MPIDR_CPU_MASK;
|
|
gp_regs_t *gp_regs;
|
|
|
|
/* TLK runs only on CPU0 */
|
|
if (cpu != 0)
|
|
return;
|
|
|
|
/* pass system off/reset events to TLK */
|
|
gp_regs = get_gpregs_ctx(&tlk_ctx.cpu_ctx);
|
|
write_ctx_reg(gp_regs, CTX_GPREG_X0, TLK_SYSTEM_OFF);
|
|
|
|
/*
|
|
* Enter the SP. We do not care about the return value because we
|
|
* must continue with the shutdown anyway.
|
|
*/
|
|
(void)tlkd_synchronous_sp_entry(&tlk_ctx);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Structure populated by the Dispatcher to be given a chance to perform any
|
|
* bookkeeping before PSCI executes a power mgmt. operation.
|
|
******************************************************************************/
|
|
const spd_pm_ops_t tlkd_pm_ops = {
|
|
.svc_migrate_info = cpu_migrate_info,
|
|
.svc_suspend = cpu_suspend_handler,
|
|
.svc_suspend_finish = cpu_resume_handler,
|
|
.svc_system_off = system_off_handler,
|
|
.svc_system_reset = system_off_handler
|
|
};
|