blob: 2e292fb19b614075cde6c12a5383f88ccf886127 [file] [log] [blame]
/*
* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2018,2020, The Linux Foundation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __PLAT_MACROS_S__
#define __PLAT_MACROS_S__
#include <drivers/arm/gic_common.h>
#include <drivers/arm/gicv2.h>
#include <drivers/arm/gicv3.h>
#include <platform_def.h>
.section .rodata.gic_reg_name, "aS"
/* Applicable only to GICv2 and GICv3 with SRE disabled (legacy mode) */
gicc_regs:
.asciz "gicc_hppir", "gicc_ahppir", "gicc_ctlr", ""
/* Applicable only to GICv3 with SRE enabled */
icc_regs:
.asciz "icc_hppir0_el1", "icc_hppir1_el1", "icc_ctlr_el3", ""
/* Registers common to both GICv2 and GICv3 */
gicd_pend_reg:
.asciz "gicd_ispendr regs (Offsets 0x200 - 0x278)\n" \
" Offset:\t\t\tvalue\n"
newline:
.asciz "\n"
spacer:
.asciz ":\t\t0x"
/** Macro : plat_crash_print_regs
* This macro allows the crash reporting routine to print GIC registers
* in case of an unhandled exception in BL31. This aids in debugging and
* this macro can be defined to be empty in case GIC register reporting is
* not desired.
* The below required platform porting macro
* prints out relevant GIC registers whenever an
* unhandled exception is taken in BL31.
* Clobbers: x0 - x10, x26, x27, sp
* ---------------------------------------------
*/
.macro plat_crash_print_regs
print_gic_regs:
ldr x26, =QTI_GICD_BASE
ldr x27, =QTI_GICC_BASE
/* Check for GICv3 system register access */
mrs x7, id_aa64pfr0_el1
ubfx x7, x7, #ID_AA64PFR0_GIC_SHIFT, #ID_AA64PFR0_GIC_WIDTH
cmp x7, #1
b.ne print_gicv2
/* Check for SRE enable */
mrs x8, ICC_SRE_EL3
tst x8, #ICC_SRE_SRE_BIT
b.eq print_gicv2
/* Load the icc reg list to x6 */
adr x6, icc_regs
/* Load the icc regs to gp regs used by str_in_crash_buf_print */
mrs x8, ICC_HPPIR0_EL1
mrs x9, ICC_HPPIR1_EL1
mrs x10, ICC_CTLR_EL3
/* Store to the crash buf and print to console */
bl str_in_crash_buf_print
b print_gic_common
print_gicv2:
/* Load the gicc reg list to x6 */
adr x6, gicc_regs
/* Load the gicc regs to gp regs used by str_in_crash_buf_print */
ldr w8, [x27, #GICC_HPPIR]
ldr w9, [x27, #GICC_AHPPIR]
ldr w10, [x27, #GICC_CTLR]
/* Store to the crash buf and print to console */
bl str_in_crash_buf_print
print_gic_common:
/* Print the GICD_ISPENDR regs */
add x7, x26, #GICD_ISPENDR
adr x4, gicd_pend_reg
bl asm_print_str
gicd_ispendr_loop:
sub x4, x7, x26
cmp x4, #0x280
b.eq exit_print_gic_regs
bl asm_print_hex
adr x4, spacer
bl asm_print_str
ldr x4, [x7], #8
bl asm_print_hex
adr x4, newline
bl asm_print_str
b gicd_ispendr_loop
exit_print_gic_regs:
.endm
#endif /* __PLAT_MACROS_S__ */