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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>
181 lines
4.5 KiB
ArmAsm
181 lines
4.5 KiB
ArmAsm
/*
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* Copyright (c) 2014-2017, 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/debug.h>
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.globl asm_print_str
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.globl asm_print_hex
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.globl asm_assert
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.globl do_panic
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/* Since the max decimal input number is 65536 */
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#define MAX_DEC_DIVISOR 10000
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/* The offset to add to get ascii for numerals '0 - 9' */
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#define ASCII_OFFSET_NUM 0x30
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#if ENABLE_ASSERTIONS
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.section .rodata.assert_str, "aS"
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assert_msg1:
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.asciz "ASSERT: File "
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assert_msg2:
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.asciz " Line "
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/*
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* This macro is intended to be used to print the
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* line number in decimal. Used by asm_assert macro.
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* The max number expected is 65536.
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* In: x4 = the decimal to print.
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* Clobber: x30, x0, x1, x2, x5, x6
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*/
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.macro asm_print_line_dec
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mov x6, #10 /* Divide by 10 after every loop iteration */
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mov x5, #MAX_DEC_DIVISOR
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dec_print_loop:
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udiv x0, x4, x5 /* Get the quotient */
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msub x4, x0, x5, x4 /* Find the remainder */
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add x0, x0, #ASCII_OFFSET_NUM /* Convert to ascii */
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bl plat_crash_console_putc
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udiv x5, x5, x6 /* Reduce divisor */
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cbnz x5, dec_print_loop
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.endm
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/* ---------------------------------------------------------------------------
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* Assertion support in assembly.
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* The below function helps to support assertions in assembly where we do not
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* have a C runtime stack. Arguments to the function are :
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* x0 - File name
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* x1 - Line no
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* Clobber list : x30, x0, x1, x2, x3, x4, x5, x6.
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* ---------------------------------------------------------------------------
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*/
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func asm_assert
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#if LOG_LEVEL >= LOG_LEVEL_INFO
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/*
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* Only print the output if LOG_LEVEL is higher or equal to
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* LOG_LEVEL_INFO, which is the default value for builds with DEBUG=1.
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*/
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mov x5, x0
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mov x6, x1
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/* Ensure the console is initialized */
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bl plat_crash_console_init
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/* Check if the console is initialized */
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cbz x0, _assert_loop
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/* The console is initialized */
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adr x4, assert_msg1
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bl asm_print_str
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mov x4, x5
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bl asm_print_str
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adr x4, assert_msg2
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bl asm_print_str
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/* Check if line number higher than max permitted */
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tst x6, #~0xffff
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b.ne _assert_loop
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mov x4, x6
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asm_print_line_dec
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bl plat_crash_console_flush
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_assert_loop:
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#endif /* LOG_LEVEL >= LOG_LEVEL_INFO */
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no_ret plat_panic_handler
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endfunc asm_assert
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#endif /* ENABLE_ASSERTIONS */
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/*
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* This function prints a string from address in x4.
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* In: x4 = pointer to string.
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* Clobber: x30, x0, x1, x2, x3
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*/
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func asm_print_str
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mov x3, x30
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1:
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ldrb w0, [x4], #0x1
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cbz x0, 2f
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bl plat_crash_console_putc
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b 1b
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2:
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ret x3
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endfunc asm_print_str
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/*
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* This function prints a hexadecimal number in x4.
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* In: x4 = the hexadecimal to print.
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* Clobber: x30, x0 - x3, x5
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*/
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func asm_print_hex
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mov x3, x30
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mov x5, #64 /* No of bits to convert to ascii */
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1:
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sub x5, x5, #4
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lsrv x0, x4, x5
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and x0, x0, #0xf
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cmp x0, #0xA
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b.lo 2f
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/* Add by 0x27 in addition to ASCII_OFFSET_NUM
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* to get ascii for characters 'a - f'.
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*/
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add x0, x0, #0x27
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2:
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add x0, x0, #ASCII_OFFSET_NUM
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bl plat_crash_console_putc
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cbnz x5, 1b
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ret x3
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endfunc asm_print_hex
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/***********************************************************
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* The common implementation of do_panic for all BL stages
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***********************************************************/
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.section .rodata.panic_str, "aS"
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panic_msg: .asciz "PANIC at PC : 0x"
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/* ---------------------------------------------------------------------------
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* do_panic assumes that it is invoked from a C Runtime Environment ie a
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* valid stack exists. This call will not return.
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* Clobber list : if CRASH_REPORTING is not enabled then x30, x0 - x6
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* ---------------------------------------------------------------------------
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*/
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/* This is for the non el3 BL stages to compile through */
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.weak el3_panic
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func do_panic
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#if CRASH_REPORTING
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str x0, [sp, #-0x10]!
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mrs x0, currentel
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ubfx x0, x0, #2, #2
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cmp x0, #0x3
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ldr x0, [sp], #0x10
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b.eq el3_panic
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#endif
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panic_common:
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/*
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* el3_panic will be redefined by the BL31
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* crash reporting mechanism (if enabled)
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*/
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el3_panic:
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mov x6, x30
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bl plat_crash_console_init
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/* Check if the console is initialized */
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cbz x0, _panic_handler
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/* The console is initialized */
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adr x4, panic_msg
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bl asm_print_str
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mov x4, x6
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/* The panic location is lr -4 */
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sub x4, x4, #4
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bl asm_print_hex
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bl plat_crash_console_flush
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_panic_handler:
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/* Pass to plat_panic_handler the address from where el3_panic was
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* called, not the address of the call from el3_panic. */
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mov x30, x6
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b plat_panic_handler
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endfunc do_panic
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