diff options
Diffstat (limited to 'include/plat/arm/common/aarch64/arm_macros.S')
| -rw-r--r-- | include/plat/arm/common/aarch64/arm_macros.S | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/include/plat/arm/common/aarch64/arm_macros.S b/include/plat/arm/common/aarch64/arm_macros.S new file mode 100644 index 0000000..8aacfb0 --- /dev/null +++ b/include/plat/arm/common/aarch64/arm_macros.S @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ +#ifndef ARM_MACROS_S +#define ARM_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)\nOffset\t\t\tValue\n" +newline: + .asciz "\n" +spacer: + .asciz ":\t\t 0x" +prefix: + .asciz "0x" + + /* --------------------------------------------- + * The below utility macro prints out relevant GIC + * registers whenever an unhandled exception is + * taken in BL31 on ARM standard platforms. + * Expects: GICD base in x16, GICC base in x17 + * Clobbers: x0 - x10, sp + * --------------------------------------------- + */ + .macro arm_print_gic_regs + /* Check for GICv3/v4 system register access. + * ID_AA64PFR0_GIC indicates presence of the CPU + * system registers by either 0b0011 or 0xb0001. + * A value of 0b000 means CPU system registers aren't + * available and the code needs to use the memory + * mapped registers like in GICv2. + */ + mrs x7, id_aa64pfr0_el1 + ubfx x7, x7, #ID_AA64PFR0_GIC_SHIFT, #ID_AA64PFR0_GIC_WIDTH + cmp x7, #0 + b.eq 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, [x17, #GICC_HPPIR] + ldr w9, [x17, #GICC_AHPPIR] + ldr w10, [x17, #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, x16, #GICD_ISPENDR + adr x4, gicd_pend_reg + bl asm_print_str +gicd_ispendr_loop: + sub x4, x7, x16 + cmp x4, #0x280 + b.eq exit_print_gic_regs + + /* Print "0x" */ + adr x4, prefix + bl asm_print_str + + /* Print offset */ + sub x4, x7, x16 + mov x5, #12 + bl asm_print_hex_bits + + 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 /* ARM_MACROS_S */ |