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[83.42.57.239]) by smtp.gmail.com with ESMTPSA id i11sm12371357wmq.10.2020.12.31.14.49.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Dec 2020 14:49:48 -0800 (PST) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH 07/18] hw/pci-host/bonito: Make BONPONCFG register read-only Date: Thu, 31 Dec 2020 23:49:00 +0100 Message-Id: <20201231224911.1467352-8-f4bug@amsat.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201231224911.1467352-1-f4bug@amsat.org> References: <20201231224911.1467352-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::32c; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x32c.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Aurelien Jarno , Aleksandar Rikalo , Huacai Chen , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Per the datasheet (Chapter 5.2. "Power-on settable configuration register - bonponcfg"), the bonponcfg can only be modified using "pull-up on the corresponding IOD0-15 signal". Do not allow update of this register by the CPU. Signed-off-by: Philippe Mathieu-Daudé --- hw/pci-host/bonito.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/pci-host/bonito.c b/hw/pci-host/bonito.c index 93820f69e49..29c0294d289 100644 --- a/hw/pci-host/bonito.c +++ b/hw/pci-host/bonito.c @@ -251,7 +251,6 @@ static void bonito_writel(void *opaque, hwaddr addr, DPRINTF("bonito_writel "TARGET_FMT_plx" val %lx saddr %x\n", addr, val, saddr); switch (saddr) { - case BONITO_BONPONCFG: case BONITO_IODEVCFG: case BONITO_SDCFG: case BONITO_PCIMAP: @@ -292,6 +291,7 @@ static void bonito_writel(void *opaque, hwaddr addr, s->regs[BONITO_INTENCLR] = val; s->regs[BONITO_INTEN] &= ~val; break; + case BONITO_BONPONCFG: case BONITO_INTEN: case BONITO_INTISR: DPRINTF("write to readonly bonito register %x\n", saddr); -- 2.26.2