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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id l11sm12200010wrt.23.2021.02.05.09.00.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Feb 2021 09:00:35 -0800 (PST) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH 18/24] hw/arm/mps2-tz: Support ROMs as well as RAMs Date: Fri, 5 Feb 2021 17:00:13 +0000 Message-Id: <20210205170019.25319-19-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210205170019.25319-1-peter.maydell@linaro.org> References: <20210205170019.25319-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::432; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x432.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, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" The AN505 and AN521 don't have any read-only memory, but the AN524 does; add a flag to ROMInfo to mark a region as ROM. Signed-off-by: Peter Maydell --- hw/arm/mps2-tz.c | 6 ++++++ 1 file changed, 6 insertions(+) -- 2.20.1 diff --git a/hw/arm/mps2-tz.c b/hw/arm/mps2-tz.c index b46b32746e0..ce5e804c734 100644 --- a/hw/arm/mps2-tz.c +++ b/hw/arm/mps2-tz.c @@ -92,8 +92,10 @@ typedef struct RAMInfo { * Flag values: * IS_ALIAS: this RAM area is an alias to the upstream end of the * MPC specified by its .mpc value + * IS_ROM: this RAM area is read-only */ #define IS_ALIAS 1 +#define IS_ROM 2 struct MPS2TZMachineClass { MachineClass parent; @@ -209,6 +211,7 @@ static MemoryRegion *mr_for_raminfo(MPS2TZMachineState *mms, if (raminfo->mrindex < 0) { /* Means this RAMInfo is for QEMU's "system memory" */ MachineState *machine = MACHINE(mms); + assert(!(raminfo->flags & IS_ROM)); return machine->ram; } @@ -217,6 +220,9 @@ static MemoryRegion *mr_for_raminfo(MPS2TZMachineState *mms, memory_region_init_ram(ram, NULL, raminfo->name, raminfo->size, &error_fatal); + if (raminfo->flags & IS_ROM) { + memory_region_set_readonly(ram, true); + } return ram; }