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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>
125 lines
3.4 KiB
ArmAsm
125 lines
3.4 KiB
ArmAsm
/*
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* Copyright (c) 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 <arch.h>
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#include <asm_macros.S>
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#include <common/bl_common.h>
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.globl bl2u_vector_table
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.globl bl2u_entrypoint
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vector_base bl2u_vector_table
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b bl2u_entrypoint
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b report_exception /* Undef */
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b report_exception /* SVC call */
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b report_exception /* Prefetch abort */
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b report_exception /* Data abort */
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b report_exception /* Reserved */
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b report_exception /* IRQ */
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b report_exception /* FIQ */
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func bl2u_entrypoint
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/*---------------------------------------------
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* Save from r1 the extents of the trusted ram
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* available to BL2U for future use.
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* r0 is not currently used.
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* ---------------------------------------------
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*/
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mov r11, r1
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mov r10, r2
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/* ---------------------------------------------
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* Set the exception vector to something sane.
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* ---------------------------------------------
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*/
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ldr r0, =bl2u_vector_table
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stcopr r0, VBAR
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isb
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/* -----------------------------------------------------
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* Enable the instruction cache
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* -----------------------------------------------------
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*/
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ldcopr r0, SCTLR
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orr r0, r0, #SCTLR_I_BIT
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stcopr r0, SCTLR
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isb
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/* ---------------------------------------------
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* Since BL2U executes after BL1, it is assumed
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* here that BL1 has already has done the
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* necessary register initializations.
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* ---------------------------------------------
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*/
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/* ---------------------------------------------
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* Invalidate the RW memory used by the BL2U
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* image. This includes the data and NOBITS
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* sections. This is done to safeguard against
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* possible corruption of this memory by dirty
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* cache lines in a system cache as a result of
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* use by an earlier boot loader stage.
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* ---------------------------------------------
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*/
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ldr r0, =__RW_START__
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ldr r1, =__RW_END__
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sub r1, r1, r0
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bl inv_dcache_range
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/* ---------------------------------------------
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* Zero out NOBITS sections. There are 2 of them:
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* - the .bss section;
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* - the coherent memory section.
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* ---------------------------------------------
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*/
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ldr r0, =__BSS_START__
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ldr r1, =__BSS_SIZE__
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bl zeromem
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/* --------------------------------------------
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* Allocate a stack whose memory will be marked
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* as Normal-IS-WBWA when the MMU is enabled.
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* There is no risk of reading stale stack
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* memory after enabling the MMU as only the
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* primary cpu is running at the moment.
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* --------------------------------------------
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*/
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bl plat_set_my_stack
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/* ---------------------------------------------
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* Initialize the stack protector canary before
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* any C code is called.
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* ---------------------------------------------
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*/
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#if STACK_PROTECTOR_ENABLED
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bl update_stack_protector_canary
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#endif
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/* ---------------------------------------------
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* Perform early platform setup & platform
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* specific early arch. setup e.g. mmu setup
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* ---------------------------------------------
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*/
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mov r0, r11
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mov r1, r10
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bl bl2u_early_platform_setup
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bl bl2u_plat_arch_setup
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/* ---------------------------------------------
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* Jump to main function.
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* ---------------------------------------------
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*/
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bl bl2u_main
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/* ---------------------------------------------
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* Should never reach this point.
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* ---------------------------------------------
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*/
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no_ret plat_panic_handler
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endfunc bl2u_entrypoint
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