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Fri, 17 Apr 2026 03:28:53 +0000 From: Jamin Lin To: =?Windows-1252?Q?C=E9dric_Le_Goater?= , Peter Maydell , Steven Lee , Troy Lee , Kane Chen , Andrew Jeffery , Joel Stanley , Pierrick Bouvier , Alistair Francis , Kevin Wolf , Hanna Reitz , "open list:ASPEED BMCs" , "open list:All patches CC here" , "open list:Block layer core" CC: Jamin Lin , Troy Lee Subject: [PATCH v4 11/21] hw/arm/ast27x0: Share FMC controller with SSP and TSP Thread-Topic: [PATCH v4 11/21] hw/arm/ast27x0: Share FMC controller with SSP and TSP Thread-Index: AQHczhpQGBoc1Lqhb0uh1hxMt/CqoQ== Date: Fri, 17 Apr 2026 03:28:53 +0000 Message-ID: <20260417032837.2664122-12-jamin_lin@aspeedtech.com> References: <20260417032837.2664122-1-jamin_lin@aspeedtech.com> In-Reply-To: <20260417032837.2664122-1-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; 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envelope-from=jamin_lin@aspeedtech.com; helo=TYDPR03CU002.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_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-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org AST2700 provides a single FMC controller shared by the main CA35 processor= =0A= (PSP) and the SSP/TSP coprocessors.=0A= =0A= >From the PSP perspective, the FMC controller is memory-mapped at=0A= 0x14000000=960x140000FF. The SSP and TSP access the same controller through= =0A= a different address window at 0x74000000=960x740000FF.=0A= =0A= This change allows the SSP and TSP SoC models to reference the existing=0A= PSP FMC instance instead of creating independent controllers. An MMIO=0A= alias is added in the SSP and TSP address spaces to map their FMC access=0A= window to the shared FMC device.=0A= =0A= This ensures consistent FMC state across PSP, SSP, and TSP and matches=0A= the AST2700 hardware design.=0A= =0A= Signed-off-by: Jamin Lin =0A= ---=0A= include/hw/arm/aspeed_coprocessor.h | 2 ++=0A= hw/arm/aspeed_ast27x0-fc.c | 4 ++++=0A= hw/arm/aspeed_ast27x0-ssp.c | 10 ++++++++++=0A= hw/arm/aspeed_ast27x0-tsp.c | 10 ++++++++++=0A= 4 files changed, 26 insertions(+)=0A= =0A= diff --git a/include/hw/arm/aspeed_coprocessor.h b/include/hw/arm/aspeed_co= processor.h=0A= index 4db995d251..2460a11401 100644=0A= --- a/include/hw/arm/aspeed_coprocessor.h=0A= +++ b/include/hw/arm/aspeed_coprocessor.h=0A= @@ -50,7 +50,9 @@ struct Aspeed27x0CoprocessorState {=0A= ARMv7MState armv7m;=0A= =0A= MemoryRegion scu_alias;=0A= + MemoryRegion fmc_alias;=0A= Aspeed2700SCUState *scu;=0A= + AspeedSMCState *fmc;=0A= };=0A= =0A= #define TYPE_ASPEED27X0SSP_COPROCESSOR "aspeed27x0ssp-coprocessor"=0A= diff --git a/hw/arm/aspeed_ast27x0-fc.c b/hw/arm/aspeed_ast27x0-fc.c=0A= index 62bd6a0568..56dd86e2c2 100644=0A= --- a/hw/arm/aspeed_ast27x0-fc.c=0A= +++ b/hw/arm/aspeed_ast27x0-fc.c=0A= @@ -161,6 +161,8 @@ static bool ast2700fc_ssp_init(MachineState *machine, E= rror **errp)=0A= OBJECT(&psp->sram), &error_abort);=0A= object_property_set_link(OBJECT(&s->ssp), "scu",=0A= OBJECT(&s->ca35.scu), &error_abort);=0A= + object_property_set_link(OBJECT(&s->ssp), "fmc",=0A= + OBJECT(&psp->fmc), &error_abort);=0A= if (!qdev_realize(DEVICE(&s->ssp), NULL, errp)) {=0A= return false;=0A= }=0A= @@ -193,6 +195,8 @@ static bool ast2700fc_tsp_init(MachineState *machine, E= rror **errp)=0A= OBJECT(&psp->sram), &error_abort);=0A= object_property_set_link(OBJECT(&s->tsp), "scu",=0A= OBJECT(&s->ca35.scu), &error_abort);=0A= + object_property_set_link(OBJECT(&s->tsp), "fmc",=0A= + OBJECT(&psp->fmc), &error_abort);=0A= if (!qdev_realize(DEVICE(&s->tsp), NULL, errp)) {=0A= return false;=0A= }=0A= diff --git a/hw/arm/aspeed_ast27x0-ssp.c b/hw/arm/aspeed_ast27x0-ssp.c=0A= index 0500c02755..bfd6fe4485 100644=0A= --- a/hw/arm/aspeed_ast27x0-ssp.c=0A= +++ b/hw/arm/aspeed_ast27x0-ssp.c=0A= @@ -26,6 +26,7 @@ static const hwaddr aspeed_soc_ast27x0ssp_memmap[] =3D {= =0A= [ASPEED_DEV_TIMER1] =3D 0x72C10000,=0A= [ASPEED_DEV_UART4] =3D 0x72C1A000,=0A= [ASPEED_DEV_IPC0] =3D 0x72C1C000,=0A= + [ASPEED_DEV_FMC] =3D 0x74000000,=0A= [ASPEED_DEV_SCUIO] =3D 0x74C02000,=0A= [ASPEED_DEV_INTCIO] =3D 0x74C18000,=0A= [ASPEED_DEV_UART0] =3D 0x74C33000,=0A= @@ -256,6 +257,13 @@ static void aspeed_soc_ast27x0ssp_realize(DeviceState = *dev_soc, Error **errp)=0A= sysbus_connect_irq(SYS_BUS_DEVICE(s->uart), 0,=0A= aspeed_soc_ast27x0ssp_get_irq(s, s->uart_dev));=0A= =0A= + /* FMC */=0A= + memory_region_init_alias(&a->fmc_alias, OBJECT(a), "fmc.alias",=0A= + &a->fmc->mmio, 0,=0A= + memory_region_size(&a->fmc->mmio));=0A= + memory_region_add_subregion(s->memory, sc->memmap[ASPEED_DEV_FMC],=0A= + &a->fmc_alias);=0A= +=0A= aspeed_mmio_map_unimplemented(s->memory, SYS_BUS_DEVICE(&s->timerctrl)= ,=0A= "aspeed.timerctrl",=0A= sc->memmap[ASPEED_DEV_TIMER1], 0x200);= =0A= @@ -273,6 +281,8 @@ static void aspeed_soc_ast27x0ssp_realize(DeviceState *= dev_soc, Error **errp)=0A= static const Property aspeed_27x0_coprocessor_properties[] =3D {=0A= DEFINE_PROP_LINK("scu", Aspeed27x0CoprocessorState, scu,=0A= TYPE_ASPEED_2700_SCU, Aspeed2700SCUState *),=0A= + DEFINE_PROP_LINK("fmc", Aspeed27x0CoprocessorState, fmc, TYPE_ASPEED_S= MC,=0A= + AspeedSMCState *),=0A= };=0A= =0A= static void aspeed_soc_ast27x0ssp_class_init(ObjectClass *klass,=0A= diff --git a/hw/arm/aspeed_ast27x0-tsp.c b/hw/arm/aspeed_ast27x0-tsp.c=0A= index 4da4741d8a..166dcb14ed 100644=0A= --- a/hw/arm/aspeed_ast27x0-tsp.c=0A= +++ b/hw/arm/aspeed_ast27x0-tsp.c=0A= @@ -26,6 +26,7 @@ static const hwaddr aspeed_soc_ast27x0tsp_memmap[] =3D {= =0A= [ASPEED_DEV_TIMER1] =3D 0x72C10000,=0A= [ASPEED_DEV_UART4] =3D 0x72C1A000,=0A= [ASPEED_DEV_IPC0] =3D 0x72C1C000,=0A= + [ASPEED_DEV_FMC] =3D 0x74000000,=0A= [ASPEED_DEV_SCUIO] =3D 0x74C02000,=0A= [ASPEED_DEV_INTCIO] =3D 0x74C18000,=0A= [ASPEED_DEV_UART0] =3D 0x74C33000,=0A= @@ -253,6 +254,13 @@ static void aspeed_soc_ast27x0tsp_realize(DeviceState = *dev_soc, Error **errp)=0A= sysbus_connect_irq(SYS_BUS_DEVICE(s->uart), 0,=0A= aspeed_soc_ast27x0tsp_get_irq(s, s->uart_dev));=0A= =0A= + /* FMC */=0A= + memory_region_init_alias(&a->fmc_alias, OBJECT(a), "fmc.alias",=0A= + &a->fmc->mmio, 0,=0A= + memory_region_size(&a->fmc->mmio));=0A= + memory_region_add_subregion(s->memory, sc->memmap[ASPEED_DEV_FMC],=0A= + &a->fmc_alias);=0A= +=0A= aspeed_mmio_map_unimplemented(s->memory, SYS_BUS_DEVICE(&s->timerctrl)= ,=0A= "aspeed.timerctrl",=0A= sc->memmap[ASPEED_DEV_TIMER1], 0x200);= =0A= @@ -270,6 +278,8 @@ static void aspeed_soc_ast27x0tsp_realize(DeviceState *= dev_soc, Error **errp)=0A= static const Property aspeed_27x0_coprocessor_properties[] =3D {=0A= DEFINE_PROP_LINK("scu", Aspeed27x0CoprocessorState, scu,=0A= TYPE_ASPEED_2700_SCU, Aspeed2700SCUState *),=0A= + DEFINE_PROP_LINK("fmc", Aspeed27x0CoprocessorState, fmc, TYPE_ASPEED_S= MC,=0A= + AspeedSMCState *),=0A= };=0A= =0A= static void aspeed_soc_ast27x0tsp_class_init(ObjectClass *klass,=0A= -- =0A= 2.43.0=0A=