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Wed, 8 Jul 2026 09:20:30 +0000 From: Jamin Lin To: =?iso-8859-1?Q?C=E9dric_Le_Goater?= , Peter Maydell , Steven Lee , Troy Lee , Kane Chen , Andrew Jeffery , Joel Stanley , Pierrick Bouvier , "open list:ASPEED BMCs" , "open list:All patches CC here" CC: Jamin Lin , Troy Lee Subject: [PATCH v5 04/10] hw/arm/ast27x0: Add DRAM alias for TSP SDRAM remap Thread-Topic: [PATCH v5 04/10] hw/arm/ast27x0: Add DRAM alias for TSP SDRAM remap Thread-Index: AQHdDrsFEde+2vNAiUOso48A72IYzg== Date: Wed, 8 Jul 2026 09:20:30 +0000 Message-ID: <20260708092023.3826159-5-jamin_lin@aspeedtech.com> References: <20260708092023.3826159-1-jamin_lin@aspeedtech.com> In-Reply-To: <20260708092023.3826159-1-jamin_lin@aspeedtech.com> Accept-Language: zh-TW, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=aspeedtech.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: TYZPR06MB4980:EE_|PUZPR06MB5499:EE_ x-ms-office365-filtering-correlation-id: c3eb653a-8833-40ef-9ff8-08dedcd2282c x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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envelope-from=jamin_lin@aspeedtech.com; helo=SEYPR02CU001.outbound.protection.outlook.com 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, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org This commit adds a MemoryRegion alias to support PSP access to=0A= TSP SDRAM through shared memory remapping.=0A= =0A= The TSP coprocessor exposes one DRAM alias:=0A= - remap maps PSP DRAM at 0x42E000000 to TSP SDRAM offset 0x0=0A= =0A= These mappings follow the default SCU register configuration used by=0A= the ASPEED SDK firmware, which defines the memory window mapping=0A= between PSP and TSP.=0A= =0A= Set TSP CPUID 5.=0A= =0A= Signed-off-by: Jamin Lin =0A= ---=0A= include/hw/misc/aspeed_scu.h | 1 +=0A= hw/arm/aspeed_ast27x0-fc.c | 2 ++=0A= hw/arm/aspeed_ast27x0-tsp.c | 3 +++=0A= hw/arm/aspeed_ast27x0.c | 2 ++=0A= hw/misc/aspeed_scu.c | 18 ++++++++++++++++++=0A= 5 files changed, 26 insertions(+)=0A= =0A= diff --git a/include/hw/misc/aspeed_scu.h b/include/hw/misc/aspeed_scu.h=0A= index ae49f6ab9a..1c3a220d96 100644=0A= --- a/include/hw/misc/aspeed_scu.h=0A= +++ b/include/hw/misc/aspeed_scu.h=0A= @@ -48,6 +48,7 @@ struct Aspeed2700SCUState {=0A= MemoryRegion dram_remap_alias[3];=0A= MemoryRegion *dram;=0A= int ssp_cpuid;=0A= + int tsp_cpuid;=0A= };=0A= =0A= #define AST2400_A1_SILICON_REV 0x02010303U=0A= diff --git a/hw/arm/aspeed_ast27x0-fc.c b/hw/arm/aspeed_ast27x0-fc.c=0A= index ce245118af..113248b98e 100644=0A= --- a/hw/arm/aspeed_ast27x0-fc.c=0A= +++ b/hw/arm/aspeed_ast27x0-fc.c=0A= @@ -104,6 +104,8 @@ static bool ast2700fc_ca35_init(MachineState *machine, = Error **errp)=0A= sc->uarts_num, serial_hd(2));=0A= object_property_set_int(OBJECT(&s->ca35), "ssp-cpuid", 4,=0A= &error_abort);=0A= + object_property_set_int(OBJECT(&s->ca35), "tsp-cpuid", 5,=0A= + &error_abort);=0A= if (!qdev_realize(DEVICE(&s->ca35), NULL, errp)) {=0A= return false;=0A= }=0A= diff --git a/hw/arm/aspeed_ast27x0-tsp.c b/hw/arm/aspeed_ast27x0-tsp.c=0A= index 4212e7bd4c..369576bde3 100644=0A= --- a/hw/arm/aspeed_ast27x0-tsp.c=0A= +++ b/hw/arm/aspeed_ast27x0-tsp.c=0A= @@ -232,6 +232,9 @@ static void aspeed_soc_ast27x0tsp_realize(DeviceState *= dev_soc, Error **errp)=0A= memory_region_add_subregion(s->memory, sc->memmap[ASPEED_DEV_SCUIO],= =0A= &a->scuio_alias);=0A= =0A= + /* SDRAM remap alias used by PSP to access TSP SDRAM */=0A= + memory_region_add_subregion(&s->sdram, 0, &a->scu->dram_remap_alias[2]= );=0A= +=0A= /* INTC */=0A= if (!sysbus_realize(SYS_BUS_DEVICE(&a->intc[0]), errp)) {=0A= return;=0A= diff --git a/hw/arm/aspeed_ast27x0.c b/hw/arm/aspeed_ast27x0.c=0A= index 10d3e35a9b..9c13efa3a6 100644=0A= --- a/hw/arm/aspeed_ast27x0.c=0A= +++ b/hw/arm/aspeed_ast27x0.c=0A= @@ -444,6 +444,8 @@ static void aspeed_soc_ast2700_init(Object *obj)=0A= "hw-prot-key");=0A= object_property_add_alias(obj, "ssp-cpuid", OBJECT(&a->scu),=0A= "ssp-cpuid");=0A= + object_property_add_alias(obj, "tsp-cpuid", OBJECT(&a->scu),=0A= + "tsp-cpuid");=0A= =0A= object_initialize_child(obj, "scuio", &s->scuio, TYPE_ASPEED_2700_SCUI= O);=0A= qdev_prop_set_uint32(DEVICE(&s->scuio), "silicon-rev",=0A= diff --git a/hw/misc/aspeed_scu.c b/hw/misc/aspeed_scu.c=0A= index cc0aa3234a..88c1a57299 100644=0A= --- a/hw/misc/aspeed_scu.c=0A= +++ b/hw/misc/aspeed_scu.c=0A= @@ -958,10 +958,28 @@ static void aspeed_2700_scu_realize(DeviceState *dev,= Error **errp)=0A= "ssp.dram.remap2", a->dram,=0A= 0x2c000000, 0x05880000);=0A= }=0A= +=0A= + if (a->tsp_cpuid > 0) {=0A= + if (!a->dram) {=0A= + error_setg(errp, TYPE_ASPEED_2700_SCU ": 'dram' link not set")= ;=0A= + return;=0A= + }=0A= + /*=0A= + * The TSP coprocessor uses one memory alias (remap) to access a s= hared=0A= + * region in the PSP DRAM:=0A= + *=0A= + * - remap maps PSP DRAM at 0x42E000000 (size: 32MB) to TSP SDRAM= =0A= + * offset 0x0=0A= + */=0A= + memory_region_init_alias(&a->dram_remap_alias[2], OBJECT(a),=0A= + "tsp.dram.remap", a->dram,=0A= + 0x2e000000, 32 * MiB);=0A= + }=0A= }=0A= =0A= static const Property aspeed_2700_scu_properties[] =3D {=0A= DEFINE_PROP_INT32("ssp-cpuid", Aspeed2700SCUState, ssp_cpuid, -1),=0A= + DEFINE_PROP_INT32("tsp-cpuid", Aspeed2700SCUState, tsp_cpuid, -1),=0A= DEFINE_PROP_LINK("dram", Aspeed2700SCUState, dram, TYPE_MEMORY_REGION,= =0A= MemoryRegion *),=0A= };=0A= -- =0A= 2.43.0=0A=