diff options
Diffstat (limited to '')
| -rw-r--r-- | lib/cpus/aarch64/qemu_max.S | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/lib/cpus/aarch64/qemu_max.S b/lib/cpus/aarch64/qemu_max.S new file mode 100644 index 0000000..8948fda --- /dev/null +++ b/lib/cpus/aarch64/qemu_max.S @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2014-2021, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ +#include <arch.h> +#include <asm_macros.S> +#include <cpu_macros.S> +#include <qemu_max.h> + +func qemu_max_core_pwr_dwn + /* --------------------------------------------- + * Disable the Data Cache. + * --------------------------------------------- + */ + mrs x1, sctlr_el3 + bic x1, x1, #SCTLR_C_BIT + msr sctlr_el3, x1 + isb + + /* --------------------------------------------- + * Flush L1 cache to L2. + * --------------------------------------------- + */ + mov x18, lr + mov x0, #DCCISW + bl dcsw_op_level1 + mov lr, x18 + ret +endfunc qemu_max_core_pwr_dwn + +func qemu_max_cluster_pwr_dwn + /* --------------------------------------------- + * Disable the Data Cache. + * --------------------------------------------- + */ + mrs x1, sctlr_el3 + bic x1, x1, #SCTLR_C_BIT + msr sctlr_el3, x1 + isb + + /* --------------------------------------------- + * Flush all caches to PoC. + * --------------------------------------------- + */ + mov x0, #DCCISW + b dcsw_op_all +endfunc qemu_max_cluster_pwr_dwn + +#if REPORT_ERRATA +/* + * Errata printing function for QEMU "max". Must follow AAPCS. + */ +func qemu_max_errata_report + ret +endfunc qemu_max_errata_report +#endif + + /* --------------------------------------------- + * This function provides cpu specific + * register information for crash reporting. + * It needs to return with x6 pointing to + * a list of register names in ascii and + * x8 - x15 having values of registers to be + * reported. + * --------------------------------------------- + */ +.section .rodata.qemu_max_regs, "aS" +qemu_max_regs: /* The ascii list of register names to be reported */ + .asciz "" /* no registers to report */ + +func qemu_max_cpu_reg_dump + adr x6, qemu_max_regs + ret +endfunc qemu_max_cpu_reg_dump + + +/* cpu_ops for QEMU MAX */ +declare_cpu_ops qemu_max, QEMU_MAX_MIDR, CPU_NO_RESET_FUNC, \ + qemu_max_core_pwr_dwn, \ + qemu_max_cluster_pwr_dwn |