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feat(stm32mp1): add plat_report_*_abort functions

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The new helpers are created in STM32MP1 platform for prefetch and data
aborts.
While at it, put plat_report_exception() under DEBUG flag. If DEBUG is
not set, the weak function which does the same will be used.
This plat_report_exception() function can also be simplified, as it will
no more be used to report aborts.

Change-Id: Ibe989b28e236693f317cffb0545ea0611b7bdde4
Signed-off-by: Yann Gautier <yann.gautier@st.com>
This commit is contained in:
Yann Gautier 2019-08-29 19:04:29 +02:00
parent 6dc5979a6c
commit 0423868373
1 changed files with 82 additions and 15 deletions
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97
plat/st/stm32mp1/stm32mp1_helper.S
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2015-2022, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -15,6 +15,8 @@
.globl platform_mem_init
.globl plat_report_exception
.globl plat_report_prefetch_abort
.globl plat_report_data_abort
.globl plat_get_my_entrypoint
.globl plat_secondary_cold_boot_setup
.globl plat_reset_handler
@ -30,20 +32,18 @@ func platform_mem_init
bx lr
endfunc platform_mem_init
func plat_report_exception
#if DEBUG
func plat_report_exception
mov r8, lr
/* Test if an abort occurred */
/*
* Test if an abort occurred
* In this case the error message has already been displayed
* by dedicated functions
*/
cmp r0, #MODE32_abt
bne undef_inst_lbl
ldr r4, =abort_str
bl asm_print_str
mrs r4, lr_abt
sub r4, r4, #4
b print_exception_info
beq 1f
undef_inst_lbl:
/* Test for an undefined instruction */
cmp r0, #MODE32_und
bne other_exception_lbl
@ -69,12 +69,69 @@ print_exception_info:
ldr r4, =end_error_str
bl asm_print_str
1:
bx r8
#else
bx lr
#endif
endfunc plat_report_exception
func plat_report_prefetch_abort
mov r8, lr
mov r9, r0
ldr r4, =prefetch_abort_str
bl asm_print_str
mov r4, r9
sub r4, r4, #4
bl asm_print_hex
ldr r4, =ifsr_str
bl asm_print_str
ldcopr r4, IFSR
bl asm_print_hex
ldr r4, =ifar_str
bl asm_print_str
ldcopr r4, IFAR
bl asm_print_hex
ldr r4, =end_error_str
bl asm_print_str
bx r8
endfunc plat_report_prefetch_abort
func plat_report_data_abort
mov r8, lr
mov r9, r0
ldr r4, =data_abort_str
bl asm_print_str
mov r4, r9
sub r4, r4, #8
bl asm_print_hex
ldr r4, =dfsr_str
bl asm_print_str
ldcopr r4, DFSR
bl asm_print_hex
ldr r4, =dfar_str
bl asm_print_str
ldcopr r4, DFAR
bl asm_print_hex
ldr r4, =end_error_str
bl asm_print_str
bx r8
endfunc plat_report_data_abort
#endif /* DEBUG */
func plat_reset_handler
bx lr
endfunc plat_reset_handler
@ -256,14 +313,24 @@ endfunc plat_panic_handler
#if DEBUG
.section .rodata.rev_err_str, "aS"
abort_str:
.asciz "\nAbort at: 0x"
prefetch_abort_str:
.asciz "\nPrefetch Abort at: 0x"
data_abort_str:
.asciz "\nData Abort at: 0x"
undefined_str:
.asciz "\nUndefined instruction at: 0x"
exception_start_str:
.asciz "\nException mode=0x"
exception_end_str:
.asciz " at: 0x"
dfsr_str:
.asciz " DFSR = 0x"
dfar_str:
.asciz " DFAR = 0x"
ifsr_str:
.asciz " IFSR = 0x"
ifar_str:
.asciz " IFAR = 0x"
end_error_str:
.asciz "\n\r"
#endif