arm-trusted-firmware/bl32/tsp/aarch64/tsp_request.S
Antonio Nino Diaz 09d40e0e08 Sanitise includes across codebase
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>
2019-01-04 10:43:17 +00:00

39 lines
747 B
ArmAsm

/*
* Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <asm_macros.S>
#include <bl32/tsp/tsp.h>
.globl tsp_get_magic
/*
* This function raises an SMC to retrieve arguments from secure
* monitor/dispatcher, saves the returned arguments the array received in x0,
* and then returns to the caller
*/
func tsp_get_magic
/* Save address to stack */
stp x0, xzr, [sp, #-16]!
/* Load arguments */
ldr w0, _tsp_fid_get_magic
/* Raise SMC */
smc #0
/* Restore address from stack */
ldp x4, xzr, [sp], #16
/* Store returned arguments to the array */
stp x0, x1, [x4, #0]
ret
endfunc tsp_get_magic
.align 2
_tsp_fid_get_magic:
.word TSP_GET_ARGS