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[14.200.18.130]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-219dc970520sm2881595ad.75.2024.12.18.19.40.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Dec 2024 19:40:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1734579657; x=1735184457; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=dH0e3/pZqO5cSRapQt3yCMopH0TKWEFkSF3QFzJFiLE=; b=ibY8tRH0x64xikGaqRFhewe1HfIR8LRyNyG8dx2Prh14oygF8Oj8Um+uf7XS65clV8 NIJHYVKWnGz+lg6FCatnZC6kCcmlXNtX9/zyG3/QoNNs+inR5Fwcjk3Y+o3ftsIh/Tms b5wn6b2QsISi4LKqGIcgcdLMGqy4RuZQ1Yfgbq2y6AjSrCk/hx7PePO/tqu4kT274gjL BjXyAOWnWI3Ts9s6SYgh7mi3II2h4og2qnBU9PM8vwVAZM/rmlH+TE++0aF8XTRR2tU7 FBZ9Y6MC16xj2SH5rB4gHkSMqiSGZQ2/pXb6oEUOn3Tm9qmxyXeDDhXp8gz+RTQebJSb biZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734579657; x=1735184457; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=dH0e3/pZqO5cSRapQt3yCMopH0TKWEFkSF3QFzJFiLE=; b=bB1uOACURmwt8NfveagC4s0p0bw8aLtkBurnkk9plyrwsEbdQ0VqTvFTEhDFnDt1Fm WrYGESlHb5HepBZFcTz9Ol6UAGNzMhZgrPIarJD/pZoAU075Xm9ZtXQQNy6j+rFs57tz O+EAaPnEbIfrEekKF1k7MLG5NnRAKuXn8jM+H/3xgJW4lMpypk46Rx3VrDUsgYowccei gSg2+dYUx3uUm4XFx+Vfwradd10TuSJSXYjj5RFkZijGiOpsLVlan95L97fh87GHlB9K s1BBROCtrFT2GjsmcNDm0KhbO9vnubbOmmSFX2p+BEEG8ocP3Cqk5PJt6rAh0Pql9U1z GAYw== X-Forwarded-Encrypted: i=1; AJvYcCUOZs8GJ27DNti2wAddh32LIrPLH2dN53oeSBTMm0AUTIVc0dUVyQ8mWUQ+JCrf+mBVomgsUUtHivY4@nongnu.org X-Gm-Message-State: AOJu0YyR15PkcOL0FNl2VxQ1kEMaBD3T7vDUjevUCIw7aLK7I31HILm3 BqWbAmjmg1lBiLCYPtrxk3XCBd7bjAj7GWKHaGzKIMMF65YaW3efwphwfA== X-Gm-Gg: ASbGnctkKKKVm9+wWQRgvhHiwKbwKWxCM1JAvOczOcexCwdd0StQNJl0NYAJ1Cm5u7v icDqgIYKUdq7+hbqql6afH3nfjdR/4A1LgToJg453dvS9FnC/ifgt1nCmyBEFQdU4L3xG1oWSny sKj5OSzX2KreXKjWxFfJ9An4AVAzaqaCVmykHzPh2AmXBCrcGj0QcqZfzU8sqi1tjSU0PQm+I3o W4LE6yGhHr4VQnrJXKHMRtPV/9nv5azfugaRN3NGNr+KM6lUASdlf1wosUPbz0qLx/7j/AiTKSs Wa5noendUw== X-Google-Smtp-Source: AGHT+IF4F7xuIiB3HLAG4AJh4EeOoDe/9AIZQJAWe7c9SZj3c95DgHtuhbX1LEERG3D+53XZRg9AWA== X-Received: by 2002:a17:902:ea08:b0:215:2f00:67b1 with SMTP id d9443c01a7336-218d6fd4be7mr65976105ad.6.1734579657231; Wed, 18 Dec 2024 19:40:57 -0800 (PST) From: Nicholas Piggin To: qemu-ppc@nongnu.org Cc: Nicholas Piggin , Daniel Henrique Barboza , Harsh Prateek Bora , qemu-devel@nongnu.org Subject: [PATCH 5/5] target/ppc: Wire up BookE ATB registers for e500 family Date: Thu, 19 Dec 2024 13:40:35 +1000 Message-ID: <20241219034035.1826173-6-npiggin@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241219034035.1826173-1-npiggin@gmail.com> References: <20241219034035.1826173-1-npiggin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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::535; envelope-from=npiggin@gmail.com; helo=mail-pg1-x535.google.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, 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-devel@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-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1734579701526116600 Content-Type: text/plain; charset="utf-8" From the Freescale PowerPC Architecture Primer: Alternate time base APU. This APU, implemented on the e500v2, defines a 64-bit time base counter that differs from the PowerPC defined time base in that it is not writable and counts at a different, and typically much higher, frequency. The alternate time base always counts up, wrapping when the 64-bit count overflows. This implementation of ATB uses the same frequency as the TB. The existing spr_read_atbu/l functions are unused without this patch to wire them into the SPR. RTEMS uses this SPR on the e6500, though this hasn't been tested. Signed-off-by: Nicholas Piggin --- target/ppc/cpu_init.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index 1253dbf622c..4f0a64e7f99 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -922,6 +922,18 @@ static void register_BookE206_sprs(CPUPPCState *env, u= int32_t mas_mask, #endif } =20 +static void register_atb_sprs(CPUPPCState *env) +{ + spr_register(env, SPR_ATBL, "ATBL", + &spr_read_atbl, SPR_NOACCESS, + &spr_read_atbl, SPR_NOACCESS, + 0x00000000); + spr_register(env, SPR_ATBU, "ATBU", + &spr_read_atbu, SPR_NOACCESS, + &spr_read_atbu, SPR_NOACCESS, + 0x00000000); +} + /* SPR specific to PowerPC 440 implementation */ static void register_440_sprs(CPUPPCState *env) { @@ -2911,6 +2923,11 @@ static void init_proc_e500(CPUPPCState *env, int ver= sion) register_BookE206_sprs(env, 0x000000DF, tlbncfg, mmucfg); register_usprgh_sprs(env); =20 + if (version !=3D fsl_e500v1) { + /* e500v1 has no support for alternate timebase */ + register_atb_sprs(env); + } + spr_register(env, SPR_HID0, "HID0", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, --=20 2.45.2