Date: Fri, 13 Sep 2019 15:56:33 +0000 (UTC) From: Ruslan Bukin <br@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r352301 - in head/sys: conf dev/psci Message-ID: <201909131556.x8DFuXsu069956@repo.freebsd.org>
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Author: br Date: Fri Sep 13 15:56:33 2019 New Revision: 352301 URL: https://svnweb.freebsd.org/changeset/base/352301 Log: Add generic arm/arm64 secure-monitor SMCCC interface and switch PSCI code to use it. This interface will also be used by Intel Stratix 10 platform. This was not tested on arm due to lack of PSCI-enabled arm hardware lying around. Reviewed by: andrew Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D21439 Added: head/sys/dev/psci/smccc_arm.S (contents, props changed) head/sys/dev/psci/smccc_arm64.S (contents, props changed) Deleted: head/sys/dev/psci/psci_arm.S head/sys/dev/psci/psci_arm64.S Modified: head/sys/conf/files.arm head/sys/conf/files.arm64 head/sys/dev/psci/psci.c head/sys/dev/psci/psci.h head/sys/dev/psci/smccc.h Modified: head/sys/conf/files.arm ============================================================================== --- head/sys/conf/files.arm Fri Sep 13 15:49:04 2019 (r352300) +++ head/sys/conf/files.arm Fri Sep 13 15:56:33 2019 (r352301) @@ -114,7 +114,7 @@ dev/ofw/ofwpci.c optional fdt pci dev/pci/pci_host_generic.c optional pci_host_generic pci dev/pci/pci_host_generic_fdt.c optional pci_host_generic pci fdt dev/psci/psci.c optional psci -dev/psci/psci_arm.S optional psci +dev/psci/smccc_arm.S optional psci dev/syscons/scgfbrndr.c optional sc dev/uart/uart_cpu_fdt.c optional uart fdt Modified: head/sys/conf/files.arm64 ============================================================================== --- head/sys/conf/files.arm64 Fri Sep 13 15:49:04 2019 (r352300) +++ head/sys/conf/files.arm64 Fri Sep 13 15:56:33 2019 (r352301) @@ -233,7 +233,7 @@ dev/pci/pci_host_generic.c optional pci dev/pci/pci_host_generic_acpi.c optional pci acpi dev/pci/pci_host_generic_fdt.c optional pci fdt dev/psci/psci.c standard -dev/psci/psci_arm64.S standard +dev/psci/smccc_arm64.S standard dev/psci/smccc.c standard dev/sdhci/sdhci_xenon.c optional sdhci_xenon sdhci fdt dev/uart/uart_cpu_arm64.c optional uart Modified: head/sys/dev/psci/psci.c ============================================================================== --- head/sys/dev/psci/psci.c Fri Sep 13 15:49:04 2019 (r352300) +++ head/sys/dev/psci/psci.c Fri Sep 13 15:56:33 2019 (r352301) @@ -128,7 +128,9 @@ static int psci_attach(device_t, psci_initfn_t, int); static void psci_shutdown(void *, int); static int psci_find_callfn(psci_callfn_t *); -static int psci_def_callfn(register_t, register_t, register_t, register_t); +static int psci_def_callfn(register_t, register_t, register_t, register_t, + register_t, register_t, register_t, register_t, + struct arm_smccc_res *res); psci_callfn_t psci_callfn = psci_def_callfn; @@ -149,7 +151,10 @@ SYSINIT(psci_start, SI_SUB_CPU, SI_ORDER_FIRST, psci_i static int psci_def_callfn(register_t a __unused, register_t b __unused, - register_t c __unused, register_t d __unused) + register_t c __unused, register_t d __unused, + register_t e __unused, register_t f __unused, + register_t g __unused, register_t h __unused, + struct arm_smccc_res *res __unused) { panic("No PSCI/SMCCC call function set"); @@ -186,9 +191,9 @@ psci_fdt_get_callfn(phandle_t node) if ((OF_getprop(node, "method", method, sizeof(method))) > 0) { if (strcmp(method, "hvc") == 0) - return (psci_hvc_despatch); + return (arm_smccc_hvc); else if (strcmp(method, "smc") == 0) - return (psci_smc_despatch); + return (arm_smccc_smc); else printf("psci: PSCI conduit \"%s\" invalid\n", method); } else @@ -282,9 +287,9 @@ psci_acpi_get_callfn(int flags) if ((flags & ACPI_FADT_PSCI_COMPLIANT) != 0) { if ((flags & ACPI_FADT_PSCI_USE_HVC) != 0) - return (psci_hvc_despatch); + return (arm_smccc_hvc); else - return (psci_smc_despatch); + return (arm_smccc_smc); } else { printf("psci: PSCI conduit not supplied in the device tree\n"); } Modified: head/sys/dev/psci/psci.h ============================================================================== --- head/sys/dev/psci/psci.h Fri Sep 13 15:49:04 2019 (r352300) +++ head/sys/dev/psci/psci.h Fri Sep 13 15:56:33 2019 (r352301) @@ -30,9 +30,12 @@ #define _MACHINE_PSCI_H_ #include <sys/types.h> +#include <dev/psci/smccc.h> typedef int (*psci_initfn_t)(device_t dev, int default_version); -typedef int (*psci_callfn_t)(register_t, register_t, register_t, register_t); +typedef int (*psci_callfn_t)(register_t, register_t, register_t, register_t, + register_t, register_t, register_t, register_t, + struct arm_smccc_res *res); extern int psci_present; @@ -47,12 +50,8 @@ static inline int psci_call(register_t a, register_t b, register_t c, register_t d) { - return (psci_callfn(a, b, c, d)); + return (psci_callfn(a, b, c, d, 0, 0, 0, 0, NULL)); } -/* One of these handlers will be selected during the boot */ -int psci_hvc_despatch(register_t, register_t, register_t, register_t); -int psci_smc_despatch(register_t, register_t, register_t, register_t); - /* * PSCI return codes. Modified: head/sys/dev/psci/smccc.h ============================================================================== --- head/sys/dev/psci/smccc.h Fri Sep 13 15:49:04 2019 (r352300) +++ head/sys/dev/psci/smccc.h Fri Sep 13 15:56:33 2019 (r352301) @@ -49,6 +49,21 @@ #define SMCCC_32BIT_CALL 0 #define SMCCC_64BIT_CALL 1 +#define SMCCC_ARM_ARCH_CALLS 0 +#define SMCCC_CPU_SERVICE_CALLS 1 +#define SMCCC_SIP_SERVICE_CALLS 2 +#define SMCCC_OEM_SERVICE_CALLS 3 +#define SMCCC_STD_SECURE_SERVICE_CALLS 4 +#define SMCCC_STD_HYP_SERVICE_CALLS 5 +#define SMCCC_VENDOR_HYP_SERVICE_CALLS 6 + +struct arm_smccc_res { + register_t a0; + register_t a1; + register_t a2; + register_t a3; +}; + /* * Arm Architecture Calls. * These are documented in the document ARM DEN 0070A. @@ -71,5 +86,9 @@ int32_t smccc_arch_features(uint32_t); int smccc_arch_workaround_1(void); int smccc_arch_workaround_2(int); +int arm_smccc_smc(register_t, register_t, register_t, register_t, register_t, + register_t, register_t, register_t, struct arm_smccc_res *res); +int arm_smccc_hvc(register_t, register_t, register_t, register_t, register_t, + register_t, register_t, register_t, struct arm_smccc_res *res); #endif /* _PSCI_SMCCC_H_ */ Added: head/sys/dev/psci/smccc_arm.S ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/psci/smccc_arm.S Fri Sep 13 15:56:33 2019 (r352301) @@ -0,0 +1,74 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2019 Ruslan Bukin <br@bsdpad.com> + * Copyright (c) 2015 Andrew Turner + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory (Department of Computer Science and + * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the + * DARPA SSITH research programme. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <machine/asm.h> +__FBSDID("$FreeBSD$"); + +.arch_extension sec /* For smc */ +.arch_extension virt /* For hvc */ + +/* + * int arm_smccc_hvc(register_t, register_t, register_t, register_t, + * register_t, register_t, register_t, register_t, + * struct arm_smccc_res *res) + */ +ENTRY(arm_smccc_hvc) + mov r12, sp + push {r4-r7} + ldm r12, {r4-r7} + hvc #0 + pop {r4-r7} + ldr r12, [sp, #(4 * 4)] + cmp r12, #0 + beq 1f + stm r12, {r0-r3} +1: bx lr +END(arm_smccc_hvc) + +/* + * int arm_smccc_smc(register_t, register_t, register_t, register_t, + * register_t, register_t, register_t, register_t, + * struct arm_smccc_res *res) + */ +ENTRY(arm_smccc_smc) + mov r12, sp + push {r4-r7} + ldm r12, {r4-r7} + smc #0 + pop {r4-r7} + ldr r12, [sp, #(4 * 4)] + cmp r12, #0 + beq 1f + stm r12, {r0-r3} +1: bx lr +END(arm_smccc_smc) Added: head/sys/dev/psci/smccc_arm64.S ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/psci/smccc_arm64.S Fri Sep 13 15:56:33 2019 (r352301) @@ -0,0 +1,62 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2019 Ruslan Bukin <br@bsdpad.com> + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory (Department of Computer Science and + * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the + * DARPA SSITH research programme. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <machine/asm.h> +__FBSDID("$FreeBSD$"); + +/* + * int arm_smccc_hvc(register_t, register_t, register_t, register_t, + * register_t, register_t, register_t, register_t, + * struct arm_smccc_res *res) + */ +ENTRY(arm_smccc_hvc) + hvc #0 + ldr x4, [sp] + cbz x4, 1f + stp x0, x1, [x4, #16 * 0] + stp x2, x3, [x4, #16 * 1] +1: ret +END(arm_smccc_hvc) + +/* + * int arm_smccc_smc(register_t, register_t, register_t, register_t, + * register_t, register_t, register_t, register_t, + * struct arm_smccc_res *res) + */ +ENTRY(arm_smccc_smc) + smc #0 + ldr x4, [sp] + cbz x4, 1f + stp x0, x1, [x4, #16 * 0] + stp x2, x3, [x4, #16 * 1] +1: ret +END(arm_smccc_smc)
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