diff options
Diffstat (limited to 'lib/cpus/aarch64/neoverse_e1.S')
| -rw-r--r-- | lib/cpus/aarch64/neoverse_e1.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/lib/cpus/aarch64/neoverse_e1.S b/lib/cpus/aarch64/neoverse_e1.S new file mode 100644 index 0000000..45bd8d3 --- /dev/null +++ b/lib/cpus/aarch64/neoverse_e1.S @@ -0,0 +1,59 @@ +/* + * Copyright (c) 2018-2023, Arm Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ +#include <arch.h> +#include <asm_macros.S> +#include <common/bl_common.h> +#include <common/debug.h> +#include <neoverse_e1.h> +#include <cpu_macros.S> +#include <plat_macros.S> + +/* Hardware handled coherency */ +#if HW_ASSISTED_COHERENCY == 0 +#error "Neoverse E1 must be compiled with HW_ASSISTED_COHERENCY enabled" +#endif + +/* 64-bit only core */ +#if CTX_INCLUDE_AARCH32_REGS == 1 +#error "Neoverse-E1 supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0" +#endif + +/* + * ERRATA_DSU_936184: + * The errata is defined in dsu_helpers.S and applies to neoverse_e1. + * Henceforth creating symbolic names to the already existing errata + * workaround functions to get them registered under the Errata Framework. + */ +.equ check_erratum_neoverse_e1_936184, check_errata_dsu_936184 +.equ erratum_neoverse_e1_936184_wa, errata_dsu_936184_wa +add_erratum_entry neoverse_e1, ERRATUM(936184), ERRATA_DSU_936184, APPLY_AT_RESET + +cpu_reset_func_start neoverse_e1 +cpu_reset_func_end neoverse_e1 + +func neoverse_e1_cpu_pwr_dwn + mrs x0, NEOVERSE_E1_CPUPWRCTLR_EL1 + orr x0, x0, #NEOVERSE_E1_CPUPWRCTLR_EL1_CORE_PWRDN_BIT + msr NEOVERSE_E1_CPUPWRCTLR_EL1, x0 + isb + ret +endfunc neoverse_e1_cpu_pwr_dwn + +errata_report_shim neoverse_e1 + +.section .rodata.neoverse_e1_regs, "aS" +neoverse_e1_regs: /* The ascii list of register names to be reported */ + .asciz "cpuectlr_el1", "" + +func neoverse_e1_cpu_reg_dump + adr x6, neoverse_e1_regs + mrs x8, NEOVERSE_E1_ECTLR_EL1 + ret +endfunc neoverse_e1_cpu_reg_dump + +declare_cpu_ops neoverse_e1, NEOVERSE_E1_MIDR, \ + neoverse_e1_reset_func, \ + neoverse_e1_cpu_pwr_dwn |