From nobody Mon Feb 9 11:06:37 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1596163790; cv=none; d=zohomail.com; s=zohoarc; b=VnIugr/YV0qbBNSiOGO1aCweauiM3uvl3iFtKK4yl0afp1SyRr9RpDWmtODWVV0m1RGbfSiiUkv8EVSWblDWXMwOO6ijcJScWK2Ffte22hmH2G8/Ucx4qupdkxRooPTmwz5CTotyRGBgnSiWPO3OOuIdlqupetWHA4ZJ0pj5VjA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1596163790; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject; bh=ljC0k9nyCux4/IOLjqVvH/F3twmU2EHIoC2bl6uN10c=; b=ndIgZ/HvXvGg+Nk/1rsWjosbghHMK8MqCrosJgvjuB1wSdN6t9DSno1Yc4ieLhl/yzkIWahCiBxt8WfoznoreNaTKTcLOGnTaohSQP7iZHgiplWWp5VXMIPLoftyVslPROZuxaYAMKv49EZxqgYO/eipd0SDRN0wTOpNbMExdbs= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1596163790190870.3219328775629; Thu, 30 Jul 2020 19:49:50 -0700 (PDT) Received: from localhost ([::1]:52152 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k1L7E-0003nQ-W4 for importer@patchew.org; Thu, 30 Jul 2020 22:49:49 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59906) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k1L5R-0001L3-1S for qemu-devel@nongnu.org; Thu, 30 Jul 2020 22:47:57 -0400 Received: from mail-pl1-x633.google.com ([2607:f8b0:4864:20::633]:44327) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k1L5N-0003pw-L3 for qemu-devel@nongnu.org; Thu, 30 Jul 2020 22:47:56 -0400 Received: by mail-pl1-x633.google.com with SMTP id w17so16025965ply.11 for ; Thu, 30 Jul 2020 19:47:53 -0700 (PDT) Received: from localhost.localdomain (111-243-189-249.dynamic-ip.hinet.net. [111.243.189.249]) by smtp.gmail.com with ESMTPSA id c27sm7578483pfj.163.2020.07.30.19.47.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Jul 2020 19:47:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=ljC0k9nyCux4/IOLjqVvH/F3twmU2EHIoC2bl6uN10c=; b=K30rKbgiOW4mRczP6unsUGoMcDSnBWmH4vLHuG/mjARGNNCFTQdjWDKavyZYOuhZuJ POUEKwi/kNr7nktvYRSespgBbv+ylZZLG5zEiw8Bn7y0d3b0QT79Mz3S2dn3VKPAr+qr zWNscDE8qdAdJL9UhnHyKgaWymCHZlidAGgKgQgyt0zYA/YrxD536xvwWZX+2aUSVbSK pp8nSHjTT2L+T0MxqAOYVmKhNU2kwa30i2CZhkOjxG0zTU7UPrlhtzv0SOoQBDpH+xZp VIHOvP1S+DHkfGQ2Zm/Y34h6auGPornjwCgnXqKqr+1N7Ubbj5n7I0iOWcl7kWPohIz9 Bq/g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=ljC0k9nyCux4/IOLjqVvH/F3twmU2EHIoC2bl6uN10c=; b=VQS0T6NEKQqiLj/lz1dNiZj2zdzv6nBxJJbQrm9FfhylfZ3GHHDvVRK+wGiCkJ4A7m jtNALtoli52I2PvFHJqFwFWBUaMDbQWFhxti6blxIznpcmRsgrHvuOyGeNGV1wmTdusz boQZDRCkCxA3UfxinZ0OyF+JEVFDBBlL+A/HorAFfkBN0ci0Pz0vXI+l8awTJ9U6t+T1 hovnTli7J5+xqhJgg7nrLn5rCMr3DQp9iSxYokjyCoZq0CMnJOC0SO3ZNm1jgMMz+2Iv pr1rgKm28jeiOiAf2+8VJirJ10arnkaJRsz0YHN9F2Rpy/dZVKledvaxkQOsh6K/tlZ9 /2CA== X-Gm-Message-State: AOAM5326zO0pzt5TDzBlXC5LmWTQuP6v0a1+R+jsKG7FTPgMo7Qpm9Sx ecbp1EfJCTR6NFihzWsutMb+ew== X-Google-Smtp-Source: ABdhPJy+HMAzlqgOzJnITveWYAzyRFUwB8EdEGxJNoIDm+jnlJNVRJnb9S7PWKH8CvjBM4uFlPDoKQ== X-Received: by 2002:a17:90a:a68:: with SMTP id o95mr2003471pjo.148.1596163672131; Thu, 30 Jul 2020 19:47:52 -0700 (PDT) From: Green Wan To: Subject: [RFC PATCH v2 1/2] hw/riscv: sifive_u: Add file-backed OTP. Date: Fri, 31 Jul 2020 10:47:07 +0800 Message-Id: <20200731024708.32725-2-green.wan@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200731024708.32725-1-green.wan@sifive.com> References: <20200731024708.32725-1-green.wan@sifive.com> Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::633; envelope-from=green.wan@sifive.com; helo=mail-pl1-x633.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-riscv@nongnu.org, Sagar Karandikar , Bastian Koppelmann , qemu-devel@nongnu.org, Green Wan , Alistair Francis , Palmer Dabbelt , bmeng.cn@gmail.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Add a file-backed implementation for OTP of sifive_u machine. The machine property for file-backed is disabled in default. Do file open, mmap and close for every OTP read/write in case keep the update-to-date snapshot of OTP. Signed-off-by: Green Wan --- hw/riscv/sifive_u.c | 26 +++++++++++ hw/riscv/sifive_u_otp.c | 83 +++++++++++++++++++++++++++++++++ include/hw/riscv/sifive_u.h | 2 + include/hw/riscv/sifive_u_otp.h | 1 + 4 files changed, 112 insertions(+) diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index e5682c38a9..c818496918 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -87,6 +87,7 @@ static const struct MemmapEntry { }; =20 #define OTP_SERIAL 1 +#define OTP_FILE "NULL" #define GEM_REVISION 0x10070109 =20 static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, @@ -387,6 +388,8 @@ static void sifive_u_machine_init(MachineState *machine) object_initialize_child(OBJECT(machine), "soc", &s->soc, TYPE_RISCV_U_= SOC); object_property_set_uint(OBJECT(&s->soc), "serial", s->serial, &error_abort); + object_property_set_str(OBJECT(&s->soc), "otp-file", s->otp_file, + &error_abort); qdev_realize(DEVICE(&s->soc), NULL, &error_abort); =20 /* register RAM */ @@ -526,6 +529,21 @@ static void sifive_u_machine_set_uint32_prop(Object *o= bj, Visitor *v, visit_type_uint32(v, name, (uint32_t *)opaque, errp); } =20 +static void sifive_u_machine_get_str_prop(Object *obj, Visitor *v, + const char *name, void *opaqu= e, + Error **errp) +{ + visit_type_str(v, name, (char **)opaque, errp); +} + +static void sifive_u_machine_set_str_prop(Object *obj, Visitor *v, + const char *name, void *opaqu= e, + Error **errp) +{ + visit_type_str(v, name, (char **)opaque, errp); +} + + static void sifive_u_machine_instance_init(Object *obj) { SiFiveUState *s =3D RISCV_U_MACHINE(obj); @@ -551,6 +569,12 @@ static void sifive_u_machine_instance_init(Object *obj) sifive_u_machine_get_uint32_prop, sifive_u_machine_set_uint32_prop, NULL, &s->serial= ); object_property_set_description(obj, "serial", "Board serial number"); + + s->otp_file =3D (char *)OTP_FILE; + object_property_add(obj, "otp-file", "string", + sifive_u_machine_get_str_prop, + sifive_u_machine_set_str_prop, NULL, &s->otp_file); + object_property_set_description(obj, "otp-file", "file-backed otp file= "); } =20 static void sifive_u_machine_class_init(ObjectClass *oc, void *data) @@ -709,6 +733,7 @@ static void sifive_u_soc_realize(DeviceState *dev, Erro= r **errp) } =20 qdev_prop_set_uint32(DEVICE(&s->otp), "serial", s->serial); + qdev_prop_set_string(DEVICE(&s->otp), "otp-file", s->otp_file); if (!sysbus_realize(SYS_BUS_DEVICE(&s->otp), errp)) { return; } @@ -737,6 +762,7 @@ static void sifive_u_soc_realize(DeviceState *dev, Erro= r **errp) =20 static Property sifive_u_soc_props[] =3D { DEFINE_PROP_UINT32("serial", SiFiveUSoCState, serial, OTP_SERIAL), + DEFINE_PROP_STRING("otp-file", SiFiveUSoCState, otp_file), DEFINE_PROP_END_OF_LIST() }; =20 diff --git a/hw/riscv/sifive_u_otp.c b/hw/riscv/sifive_u_otp.c index f6ecbaa2ca..e359f30fdb 100644 --- a/hw/riscv/sifive_u_otp.c +++ b/hw/riscv/sifive_u_otp.c @@ -24,6 +24,62 @@ #include "qemu/log.h" #include "qemu/module.h" #include "hw/riscv/sifive_u_otp.h" +#include +#include +#include +#include +#include +#include +#include +#include + +#define TRACE_PREFIX "FU540_OTP: " +#define SIFIVE_FU540_OTP_SIZE (SIFIVE_U_OTP_NUM_FUSES * 4) + +static int32_t sifive_u_otp_backed_open(const char *filename, int32_t *fd, + uint32_t **map) +{ + /* open and mmap OTP image file */ + if (filename && strcmp(filename, "NULL") !=3D 0) { + *fd =3D open(filename, O_RDWR); + + if (*fd < 0) { + qemu_log_mask(LOG_TRACE, + TRACE_PREFIX "Warning: can't open otp file<%s>\n= ", + filename); + return -1; + } else { + + *map =3D (unsigned int *)mmap(0, + SIFIVE_FU540_OTP_SIZE, + PROT_READ | PROT_WRITE | PROT_EXE= C, + MAP_FILE | MAP_SHARED, + *fd, + 0); + + if (*map =3D=3D MAP_FAILED) { + qemu_log_mask(LOG_TRACE, + TRACE_PREFIX "Warning: can't mmap otp file<%= s>\n", + filename); + close(*fd); + return -2; + } + } + } else { + /* filename is 'NULL' */ + return -3; + } + + return 0; +} + +static int32_t sifive_u_otp_backed_close(int fd, unsigned int *map) +{ + munmap(map, SIFIVE_FU540_OTP_SIZE); + close(fd); + + return 0; +} =20 static uint64_t sifive_u_otp_read(void *opaque, hwaddr addr, unsigned int = size) { @@ -46,6 +102,20 @@ static uint64_t sifive_u_otp_read(void *opaque, hwaddr = addr, unsigned int size) if ((s->pce & SIFIVE_U_OTP_PCE_EN) && (s->pdstb & SIFIVE_U_OTP_PDSTB_EN) && (s->ptrim & SIFIVE_U_OTP_PTRIM_EN)) { + + int32_t fd; + uint32_t *map; + uint64_t val; + + /* open and mmap OTP image file */ + if (0 =3D=3D sifive_u_otp_backed_open(s->otp_file, &fd, &map))= { + val =3D (uint64_t)(map[s->pa]); + + /* close and unmmap */ + sifive_u_otp_backed_close(fd, map); + return val; + } + return s->fuse[s->pa & SIFIVE_U_OTP_PA_MASK]; } else { return 0xff; @@ -78,6 +148,8 @@ static void sifive_u_otp_write(void *opaque, hwaddr addr, { SiFiveUOTPState *s =3D opaque; uint32_t val32 =3D (uint32_t)val64; + int32_t fd; + uint32_t *map; =20 switch (addr) { case SIFIVE_U_OTP_PA: @@ -123,6 +195,16 @@ static void sifive_u_otp_write(void *opaque, hwaddr ad= dr, s->ptrim =3D val32; break; case SIFIVE_U_OTP_PWE: + /* open and mmap OTP image file */ + if (0 =3D=3D sifive_u_otp_backed_open(s->otp_file, &fd, &map)) { + /* store value */ + map[s->pa] &=3D ~(s->pdin << s->paio); + map[s->pa] |=3D (s->pdin << s->paio); + + /* close and unmmap */ + sifive_u_otp_backed_close(fd, map); + } + s->pwe =3D val32; break; default: @@ -143,6 +225,7 @@ static const MemoryRegionOps sifive_u_otp_ops =3D { =20 static Property sifive_u_otp_properties[] =3D { DEFINE_PROP_UINT32("serial", SiFiveUOTPState, serial, 0), + DEFINE_PROP_STRING("otp-file", SiFiveUOTPState, otp_file), DEFINE_PROP_END_OF_LIST(), }; =20 diff --git a/include/hw/riscv/sifive_u.h b/include/hw/riscv/sifive_u.h index aba4d0181f..966723da1d 100644 --- a/include/hw/riscv/sifive_u.h +++ b/include/hw/riscv/sifive_u.h @@ -46,6 +46,7 @@ typedef struct SiFiveUSoCState { CadenceGEMState gem; =20 uint32_t serial; + char *otp_file; } SiFiveUSoCState; =20 #define TYPE_RISCV_U_MACHINE MACHINE_TYPE_NAME("sifive_u") @@ -65,6 +66,7 @@ typedef struct SiFiveUState { bool start_in_flash; uint32_t msel; uint32_t serial; + char *otp_file; } SiFiveUState; =20 enum { diff --git a/include/hw/riscv/sifive_u_otp.h b/include/hw/riscv/sifive_u_ot= p.h index 639297564a..f3d71ce82d 100644 --- a/include/hw/riscv/sifive_u_otp.h +++ b/include/hw/riscv/sifive_u_otp.h @@ -75,6 +75,7 @@ typedef struct SiFiveUOTPState { uint32_t fuse[SIFIVE_U_OTP_NUM_FUSES]; /* config */ uint32_t serial; + char *otp_file; } SiFiveUOTPState; =20 #endif /* HW_SIFIVE_U_OTP_H */ --=20 2.17.1