| Siva Durga Prasad Paladugu | fe4af66 | 2018-09-25 18:44:58 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #ifndef PLAT_MACROS_S |
| 8 | #define PLAT_MACROS_S |
| 9 | |
| 10 | #include "../include/platform_def.h" |
| 11 | #include <gic_common.h> |
| 12 | #include <gicv2.h> |
| 13 | #include <gicv3.h> |
| 14 | |
| 15 | .section .rodata.gic_reg_name, "aS" |
| 16 | /* Applicable only to GICv2 and GICv3 with SRE disabled (legacy mode) */ |
| 17 | gicc_regs: |
| 18 | .asciz "gicc_hppir", "gicc_ahppir", "gicc_ctlr", "" |
| 19 | |
| 20 | /* Applicable only to GICv3 with SRE enabled */ |
| 21 | icc_regs: |
| 22 | .asciz "icc_hppir0_el1", "icc_hppir1_el1", "icc_ctlr_el3", "" |
| 23 | |
| 24 | /* Registers common to both GICv2 and GICv3 */ |
| 25 | gicd_pend_reg: |
| 26 | .asciz "gicd_ispendr regs (Offsets 0x200 - 0x278)\n Offset:\t\t\tvalue\n" |
| 27 | newline: |
| 28 | .asciz "\n" |
| 29 | spacer: |
| 30 | .asciz ":\t\t0x" |
| 31 | |
| 32 | /* --------------------------------------------- |
| 33 | * The below utility macro prints out relevant GIC |
| 34 | * registers whenever an unhandled exception is |
| 35 | * taken in BL31 on Versal platform. |
| 36 | * Expects: GICD base in x16, GICC base in x17 |
| 37 | * Clobbers: x0 - x10, sp |
| 38 | * --------------------------------------------- |
| 39 | */ |
| 40 | .macro versal_print_gic_regs |
| 41 | /* Check for GICv3 system register access */ |
| 42 | mrs x7, id_aa64pfr0_el1 |
| 43 | ubfx x7, x7, #ID_AA64PFR0_GIC_SHIFT, #ID_AA64PFR0_GIC_WIDTH |
| 44 | cmp x7, #1 |
| 45 | b.ne print_gicv2 |
| 46 | |
| 47 | /* Check for SRE enable */ |
| 48 | mrs x8, ICC_SRE_EL3 |
| 49 | tst x8, #ICC_SRE_SRE_BIT |
| 50 | b.eq print_gicv2 |
| 51 | |
| 52 | /* Load the icc reg list to x6 */ |
| 53 | adr x6, icc_regs |
| 54 | /* Load the icc regs to gp regs used by str_in_crash_buf_print */ |
| 55 | mrs x8, ICC_HPPIR0_EL1 |
| 56 | mrs x9, ICC_HPPIR1_EL1 |
| 57 | mrs x10, ICC_CTLR_EL3 |
| 58 | /* Store to the crash buf and print to console */ |
| 59 | bl str_in_crash_buf_print |
| 60 | b print_gic_common |
| 61 | |
| 62 | print_gicv2: |
| 63 | /* Load the gicc reg list to x6 */ |
| 64 | adr x6, gicc_regs |
| 65 | /* Load the gicc regs to gp regs used by str_in_crash_buf_print */ |
| 66 | ldr w8, [x17, #GICC_HPPIR] |
| 67 | ldr w9, [x17, #GICC_AHPPIR] |
| 68 | ldr w10, [x17, #GICC_CTLR] |
| 69 | /* Store to the crash buf and print to console */ |
| 70 | bl str_in_crash_buf_print |
| 71 | |
| 72 | print_gic_common: |
| 73 | /* Print the GICD_ISPENDR regs */ |
| 74 | add x7, x16, #GICD_ISPENDR |
| 75 | adr x4, gicd_pend_reg |
| 76 | bl asm_print_str |
| 77 | gicd_ispendr_loop: |
| 78 | sub x4, x7, x16 |
| 79 | cmp x4, #0x280 |
| 80 | b.eq exit_print_gic_regs |
| 81 | bl asm_print_hex |
| 82 | |
| 83 | adr x4, spacer |
| 84 | bl asm_print_str |
| 85 | |
| 86 | ldr x4, [x7], #8 |
| 87 | bl asm_print_hex |
| 88 | |
| 89 | adr x4, newline |
| 90 | bl asm_print_str |
| 91 | b gicd_ispendr_loop |
| 92 | exit_print_gic_regs: |
| 93 | .endm |
| 94 | |
| 95 | /* --------------------------------------------- |
| 96 | * The below required platform porting macro |
| 97 | * prints out relevant GIC and CCI registers |
| 98 | * whenever an unhandled exception is taken in |
| 99 | * BL31. |
| 100 | * Clobbers: x0 - x10, x16, x17, sp |
| 101 | * --------------------------------------------- |
| 102 | */ |
| 103 | .macro plat_crash_print_regs |
| 104 | mov_imm x17, PLAT_VERSAL_GICD_BASE |
| 105 | mov_imm x16, PLAT_VERSAL_GICR_BASE |
| 106 | versal_print_gic_regs |
| 107 | .endm |
| 108 | |
| 109 | #endif /* PLAT_MACROS_S */ |