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Mon, 09 Nov 2026 03:36:15 -0800 (PST) Received: from ubuntu.lan ([2405:4802:913e:86f0:35c7:7294:a0c3:69b2]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-372660f444csm19762941eec.19.2026.11.09.03.36.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2026 03:36:15 -0800 (PST) From: Khai Do To: qemu-devel@nongnu.org, qemu-arm@nongnu.org Cc: peter.maydell@linaro.org, pbonzini@redhat.com, strahinja.p.jankovic@gmail.com, Khai Do Subject: [PATCH v2 4/8] hw/misc/allwinner-sid: Support configurable eFuse capacity up to 512 bytes Date: Mon, 9 Nov 2026 18:35:32 +0700 Message-ID: <20261109113545.18561-5-dovankhai97@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261109113545.18561-1-dovankhai97@gmail.com> References: <20261109113545.18561-1-dovankhai97@gmail.com> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::132a; envelope-from=dovankhai97@gmail.com; helo=mail-dy1-x132a.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Allwinner SoCs provide different eFuse capacities: older SoCs have 16 to 256 bytes, while newer 64-bit SoCs (e.g. H618) provide up to 512 bytes of eFuse storage. Add a "size" property (defaulting to 16 bytes for backward compatibility) and an internal storage buffer up to 512 bytes (AW_SID_SIZE_MAX). Signed-off-by: Khai Do --- hw/misc/allwinner-sid.c | 12 ++++++++++-- include/hw/misc/allwinner-sid.h | 8 ++++++++ 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/hw/misc/allwinner-sid.c b/hw/misc/allwinner-sid.c index b5f827d4bd..afe5132c93 100644 --- a/hw/misc/allwinner-sid.c +++ b/hw/misc/allwinner-sid.c @@ -79,10 +79,15 @@ static void allwinner_sid_write(void *opaque, hwaddr offset, if ((s->control & REG_PRCTL_OP_LOCK) && (s->control & REG_PRCTL_WRITE)) { - uint32_t id = s->control >> 16; + uint32_t id = extract32(s->control, 16, 9); if (id <= sizeof(QemuUUID) - sizeof(s->rdkey)) { s->rdkey = ldl_be_p(&s->identifier.data[id]); + } else if (s->size >= sizeof(s->rdkey) && + id <= s->size - sizeof(s->rdkey)) { + s->rdkey = ldl_be_p(&s->storage[id]); + } else { + s->rdkey = 0; } } s->control &= ~REG_PRCTL_WRITE; @@ -129,16 +134,19 @@ static void allwinner_sid_init(Object *obj) static const Property allwinner_sid_properties[] = { DEFINE_PROP_UUID_NODEFAULT("identifier", AwSidState, identifier), + DEFINE_PROP_UINT32("size", AwSidState, size, sizeof(QemuUUID)), }; static const VMStateDescription allwinner_sid_vmstate = { .name = "allwinner-sid", - .version_id = 1, + .version_id = 2, .minimum_version_id = 1, .fields = (const VMStateField[]) { VMSTATE_UINT32(control, AwSidState), VMSTATE_UINT32(rdkey, AwSidState), VMSTATE_UINT8_ARRAY_V(identifier.data, AwSidState, sizeof(QemuUUID), 1), + VMSTATE_UINT32_V(size, AwSidState, 2), + VMSTATE_UINT8_ARRAY_V(storage, AwSidState, AW_SID_SIZE_MAX, 2), VMSTATE_END_OF_LIST() } }; diff --git a/include/hw/misc/allwinner-sid.h b/include/hw/misc/allwinner-sid.h index cfa22a4d7f..da8c235c5d 100644 --- a/include/hw/misc/allwinner-sid.h +++ b/include/hw/misc/allwinner-sid.h @@ -24,6 +24,9 @@ #include "hw/core/sysbus.h" #include "qemu/uuid.h" +/** Maximum eFuse storage size supported */ +#define AW_SID_SIZE_MAX (512) + /** * Object model * @{ @@ -54,6 +57,11 @@ struct AwSidState { /** Stores the emulated device identifier */ QemuUUID identifier; + /** Size of eFuse storage */ + uint32_t size; + + /** eFuse storage buffer */ + uint8_t storage[AW_SID_SIZE_MAX]; }; #endif /* HW_MISC_ALLWINNER_SID_H */ -- 2.43.0