From a4668c36f1fca75bce99cb706ba7c27e0c16454d Mon Sep 17 00:00:00 2001 From: Artsem Artsemenka Date: Mon, 16 Sep 2019 15:11:21 +0100 Subject: [PATCH] Cortex_hercules: Add support for Hercules-AE Not tested on FVP Model. Change-Id: Iedebc5c1fbc7ea577e94142b7feafa5546f1f4f9 Signed-off-by: Artsem Artsemenka --- include/lib/cpus/aarch64/cortex_hercules_ae.h | 14 +++ lib/cpus/aarch64/cortex_hercules_ae.S | 100 ++++++++++++++++++ plat/arm/board/fvp/platform.mk | 3 +- 3 files changed, 116 insertions(+), 1 deletion(-) create mode 100644 include/lib/cpus/aarch64/cortex_hercules_ae.h create mode 100644 lib/cpus/aarch64/cortex_hercules_ae.S diff --git a/include/lib/cpus/aarch64/cortex_hercules_ae.h b/include/lib/cpus/aarch64/cortex_hercules_ae.h new file mode 100644 index 00000000..795563bc --- /dev/null +++ b/include/lib/cpus/aarch64/cortex_hercules_ae.h @@ -0,0 +1,14 @@ +/* + * Copyright (c) 2019, ARM Limited. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef CORTEX_HERCULES_AE_H +#define CORTEX_HERCULES_AE_H + +#include + +#define CORTEX_HERCULES_AE_MIDR U(0x410FD420) + +#endif /* CORTEX_HERCULES_AE_H */ diff --git a/lib/cpus/aarch64/cortex_hercules_ae.S b/lib/cpus/aarch64/cortex_hercules_ae.S new file mode 100644 index 00000000..c4a21635 --- /dev/null +++ b/lib/cpus/aarch64/cortex_hercules_ae.S @@ -0,0 +1,100 @@ +/* + * Copyright (c) 2019, ARM Limited. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include +#include +#include +#include +#include +#include + +/* Hardware handled coherency */ +#if HW_ASSISTED_COHERENCY == 0 +#error "cortex_hercules_ae must be compiled with HW_ASSISTED_COHERENCY enabled" +#endif + + /* ------------------------------------------------- + * The CPU Ops reset function for Cortex-Hercules-AE + * ------------------------------------------------- + */ +#if ENABLE_AMU +func cortex_hercules_ae_reset_func + /* Make sure accesses from EL0/EL1 and EL2 are not trapped to EL3 */ + mrs x0, actlr_el3 + bic x0, x0, #CORTEX_HERCULES_ACTLR_TAM_BIT + msr actlr_el3, x0 + + /* Make sure accesses from non-secure EL0/EL1 are not trapped to EL2 */ + mrs x0, actlr_el2 + bic x0, x0, #CORTEX_HERCULES_ACTLR_TAM_BIT + msr actlr_el2, x0 + + /* Enable group0 counters */ + mov x0, #CORTEX_HERCULES_AMU_GROUP0_MASK + msr CPUAMCNTENSET0_EL0, x0 + + /* Enable group1 counters */ + mov x0, #CORTEX_HERCULES_AMU_GROUP1_MASK + msr CPUAMCNTENSET1_EL0, x0 + isb + + ret +endfunc cortex_hercules_ae_reset_func +#endif + + /* ------------------------------------------------------- + * HW will do the cache maintenance while powering down + * ------------------------------------------------------- + */ +func cortex_hercules_ae_core_pwr_dwn + /* ------------------------------------------------------- + * Enable CPU power down bit in power control register + * ------------------------------------------------------- + */ + mrs x0, CORTEX_HERCULES_CPUPWRCTLR_EL1 + orr x0, x0, #CORTEX_HERCULES_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT + msr CORTEX_HERCULES_CPUPWRCTLR_EL1, x0 + isb + ret +endfunc cortex_hercules_ae_core_pwr_dwn + + /* + * Errata printing function for cortex_hercules_ae. Must follow AAPCS. + */ +#if REPORT_ERRATA +func cortex_hercules_ae_errata_report + ret +endfunc cortex_hercules_ae_errata_report +#endif + + /* ------------------------------------------------------- + * This function provides cortex_hercules_ae 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.cortex_hercules_ae_regs, "aS" +cortex_hercules_ae_regs: /* The ascii list of register names to be reported */ + .asciz "cpuectlr_el1", "" + +func cortex_hercules_ae_cpu_reg_dump + adr x6, cortex_hercules_ae_regs + mrs x8, CORTEX_HERCULES_CPUECTLR_EL1 + ret +endfunc cortex_hercules_ae_cpu_reg_dump + +#if ENABLE_AMU +#define HERCULES_AE_RESET_FUNC cortex_hercules_ae_reset_func +#else +#define HERCULES_AE_RESET_FUNC CPU_NO_RESET_FUNC +#endif + +declare_cpu_ops cortex_hercules_ae, CORTEX_HERCULES_AE_MIDR, \ + HERCULES_AE_RESET_FUNC, \ + cortex_hercules_ae_core_pwr_dwn diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk index 1e7cfce5..2bba6bd0 100644 --- a/plat/arm/board/fvp/platform.mk +++ b/plat/arm/board/fvp/platform.mk @@ -115,7 +115,8 @@ else lib/cpus/aarch64/neoverse_n1.S \ lib/cpus/aarch64/neoverse_e1.S \ lib/cpus/aarch64/neoverse_zeus.S \ - lib/cpus/aarch64/cortex_hercules.S + lib/cpus/aarch64/cortex_hercules.S \ + lib/cpus/aarch64/cortex_hercules_ae.S endif # AArch64/AArch32 cores FVP_CPU_LIBS += lib/cpus/aarch64/cortex_a55.S \ -- 2.30.2