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Fri, 17 Jul 2026 08:46:06 +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 , Alistair Francis , Fabiano Rosas , Laurent Vivier , Paolo Bonzini , "open list:ASPEED BMCs" , "open list:All patches CC here" CC: Jamin Lin , Troy Lee , =?iso-8859-1?Q?Philippe_Mathieu-Daud=E9?= , =?iso-8859-1?Q?C=E9dric_Le_Goater?= Subject: [PATCH v4 4/9] hw/misc/aspeed_scu: Add separate reset handler for AST2700 SCUIO Thread-Topic: [PATCH v4 4/9] hw/misc/aspeed_scu: Add separate reset handler for AST2700 SCUIO Thread-Index: AQHdFci0CMdhQo9LqkKpmqx+uohXPg== Date: Fri, 17 Jul 2026 08:46:05 +0000 Message-ID: <20260717084559.3477061-5-jamin_lin@aspeedtech.com> References: <20260717084559.3477061-1-jamin_lin@aspeedtech.com> In-Reply-To: <20260717084559.3477061-1-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=TYPPR03CU001.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, RCVD_IN_DNSWL_NONE=-0.0001, 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 Introduce a dedicated reset handler for SCUIO.=0A= =0A= Previously, SCU and SCUIO shared the same reset handler. This no longer=0A= fits the AST2700 design, where SCU uses the Aspeed2700SCUState subclass=0A= and will handle coprocessor-related control in future changes.=0A= =0A= Since these controls are defined in SCU (not SCUIO), SCU and SCUIO=0A= should not share the same reset logic.=0A= =0A= This change gives SCUIO its own reset handler and prepares for upcoming=0A= SCU-specific functionality.=0A= =0A= No functional change.=0A= =0A= Signed-off-by: Jamin Lin =0A= Reviewed-by: Philippe Mathieu-Daud=E9 =0A= Reviewed-by: C=E9dric Le Goater =0A= Tested-by: Philippe Mathieu-Daud=E9 =0A= ---=0A= hw/misc/aspeed_scu.c | 12 +++++++++++-=0A= 1 file changed, 11 insertions(+), 1 deletion(-)=0A= =0A= diff --git a/hw/misc/aspeed_scu.c b/hw/misc/aspeed_scu.c=0A= index efe1d6315b..ca93c3699d 100644=0A= --- a/hw/misc/aspeed_scu.c=0A= +++ b/hw/misc/aspeed_scu.c=0A= @@ -1069,6 +1069,16 @@ static const uint32_t ast2700_a0_resets_io[ASPEED_AS= T2700_SCU_NR_REGS] =3D {=0A= [AST2700_SCUIO_FREQ_CNT_CTL] =3D 0x00000080,=0A= };=0A= =0A= +static void aspeed_ast2700_scuio_reset_hold(Object *obj, ResetType type)= =0A= +{=0A= + AspeedSCUState *s =3D ASPEED_SCU(obj);=0A= + AspeedSCUClass *asc =3D ASPEED_SCU_GET_CLASS(obj);=0A= +=0A= + memcpy(s->regs, asc->resets, asc->nr_regs * 4);=0A= + s->regs[AST2700_SILICON_REV] =3D s->silicon_rev;=0A= + s->regs[AST2700_HW_STRAP1] =3D s->hw_strap1;=0A= +}=0A= +=0A= static void aspeed_2700_scuio_class_init(ObjectClass *klass, const void *d= ata)=0A= {=0A= DeviceClass *dc =3D DEVICE_CLASS(klass);=0A= @@ -1076,7 +1086,7 @@ static void aspeed_2700_scuio_class_init(ObjectClass = *klass, const void *data)=0A= AspeedSCUClass *asc =3D ASPEED_SCU_CLASS(klass);=0A= =0A= dc->desc =3D "ASPEED 2700 System Control Unit I/O";=0A= - rc->phases.hold =3D aspeed_ast2700_scu_reset_hold;=0A= + rc->phases.hold =3D aspeed_ast2700_scuio_reset_hold;=0A= asc->resets =3D ast2700_a0_resets_io;=0A= asc->calc_hpll =3D aspeed_2600_scu_calc_hpll;=0A= asc->get_apb =3D aspeed_2700_scuio_get_apb_freq;=0A= -- =0A= 2.43.0=0A=