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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>
47 lines
1.3 KiB
ArmAsm
47 lines
1.3 KiB
ArmAsm
/*
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* Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <asm_macros.S>
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#include <lib/el3_runtime/cpu_data.h>
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.globl init_cpu_data_ptr
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.globl _cpu_data_by_index
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/* -----------------------------------------------------------------
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* void init_cpu_data_ptr(void)
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*
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* Initialise the TPIDR_EL3 register to refer to the cpu_data_t
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* for the calling CPU. This must be called before cm_get_cpu_data()
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*
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* This can be called without a valid stack. It assumes that
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* plat_my_core_pos() does not clobber register x10.
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* clobbers: x0, x1, x10
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* -----------------------------------------------------------------
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*/
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func init_cpu_data_ptr
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mov x10, x30
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bl plat_my_core_pos
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bl _cpu_data_by_index
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msr tpidr_el3, x0
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ret x10
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endfunc init_cpu_data_ptr
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/* -----------------------------------------------------------------
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* cpu_data_t *_cpu_data_by_index(uint32_t cpu_index)
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*
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* Return the cpu_data structure for the CPU with given linear index
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*
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* This can be called without a valid stack.
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* clobbers: x0, x1
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* -----------------------------------------------------------------
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*/
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func _cpu_data_by_index
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mov_imm x1, CPU_DATA_SIZE
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mul x0, x0, x1
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adr x1, percpu_data
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add x0, x0, x1
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ret
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endfunc _cpu_data_by_index
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