mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-08-17 18:07:01 +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>
93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#ifndef EHF_H
|
|
#define EHF_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <cdefs.h>
|
|
#include <stdint.h>
|
|
|
|
#include <lib/utils_def.h>
|
|
|
|
/* Valid priorities set bit 0 of the priority handler. */
|
|
#define EHF_PRI_VALID_ BIT(0)
|
|
|
|
/* Marker for no handler registered for a valid priority */
|
|
#define EHF_NO_HANDLER_ (0U | EHF_PRI_VALID_)
|
|
|
|
/* Extract the specified number of top bits from 7 lower bits of priority */
|
|
#define EHF_PRI_TO_IDX(pri, plat_bits) \
|
|
((((unsigned) (pri)) & 0x7fu) >> (7u - (plat_bits)))
|
|
|
|
/* Install exception priority descriptor at a suitable index */
|
|
#define EHF_PRI_DESC(plat_bits, priority) \
|
|
[EHF_PRI_TO_IDX(priority, plat_bits)] = { \
|
|
.ehf_handler = EHF_NO_HANDLER_, \
|
|
}
|
|
|
|
/* Macro for platforms to regiter its exception priorities */
|
|
#define EHF_REGISTER_PRIORITIES(priorities, num, bits) \
|
|
const ehf_priorities_t exception_data = { \
|
|
.num_priorities = (num), \
|
|
.ehf_priorities = (priorities), \
|
|
.pri_bits = (bits), \
|
|
}
|
|
|
|
/*
|
|
* Priority stack, managed as a bitmap.
|
|
*
|
|
* Currently only supports 32 priority levels, allowing platforms to use up to 5
|
|
* top bits of priority. But the type can be changed to uint64_t should need
|
|
* arise to support 64 priority levels, allowing platforms to use up to 6 top
|
|
* bits of priority.
|
|
*/
|
|
typedef uint32_t ehf_pri_bits_t;
|
|
|
|
/*
|
|
* Per-PE exception data. The data for each PE is kept as a per-CPU data field.
|
|
* See cpu_data.h.
|
|
*/
|
|
typedef struct {
|
|
ehf_pri_bits_t active_pri_bits;
|
|
|
|
/* Priority mask value before any priority levels were active */
|
|
uint8_t init_pri_mask;
|
|
|
|
/* Non-secure priority mask value stashed during Secure execution */
|
|
uint8_t ns_pri_mask;
|
|
} __aligned(sizeof(uint64_t)) pe_exc_data_t;
|
|
|
|
typedef int (*ehf_handler_t)(uint32_t intr_raw, uint32_t flags, void *handle,
|
|
void *cookie);
|
|
|
|
typedef struct ehf_pri_desc {
|
|
/*
|
|
* 4-byte-aligned exception handler. Bit 0 indicates the corresponding
|
|
* priority level is valid. This is effectively of ehf_handler_t type,
|
|
* but left as uintptr_t in order to make pointer arithmetic convenient.
|
|
*/
|
|
uintptr_t ehf_handler;
|
|
} ehf_pri_desc_t;
|
|
|
|
typedef struct ehf_priority_type {
|
|
ehf_pri_desc_t *ehf_priorities;
|
|
unsigned int num_priorities;
|
|
unsigned int pri_bits;
|
|
} ehf_priorities_t;
|
|
|
|
void ehf_init(void);
|
|
void ehf_activate_priority(unsigned int priority);
|
|
void ehf_deactivate_priority(unsigned int priority);
|
|
void ehf_register_priority_handler(unsigned int pri, ehf_handler_t handler);
|
|
void ehf_allow_ns_preemption(uint64_t preempt_ret_code);
|
|
unsigned int ehf_is_ns_preemption_allowed(void);
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* EHF_H */
|