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a=openpgp-sha256; l=1705; i=caleb.connolly@linaro.org; h=from:subject:message-id; bh=mbugjza/3AXFMrnsqXThdsfeoDL6g450s5i6UZXmkj0=; b=owEBbQKS/ZANAwAIAQWDMSsZX2S2AcsmYgBmYzqUu4ivmxv41AHMQj62wRIVgRVL3gr6OfS8K KD2vBhmMwOJAjMEAAEIAB0WIQS2UaFGPGq+0GkMVc0FgzErGV9ktgUCZmM6lAAKCRAFgzErGV9k tqUWD/9WxB0BVMAGb9qDqOeGEXPxFAB2y5vzmePtqf9r0ASafq1JoKvoovjx4+Hxncpf2QuGLEN dKoLyku043D4DmiFP9R4A0HVFVriJ2y239+Ps5DIDtsw3UrApCNRBp0wPG9FtHDkEI3YMZhY+My PY4ZK6hwOnuU6rMYPthV4khP5/eNjOv4clvHJOpKiKFwHGhduDeDfDUtsVjfhWRfwvNXOIZpr45 AIK17FH6zMbMkwPtCodKhhUqDRf19HHZwG1ZZPMhpCB1C/uPcdBNLZ3kQeseoSzhvqPfFAXpp6q IFX5LMnl+S3qMfjfbasxdzFbib8GcjcExQN3vE34F0geB3W3mDXjxnzuih+VjZ3AGZ/KZodcRre xRG6V6BV3K7LP6ExmAMN+OhcVrUWAwnL5fseM6FvuST4Zzkm8DHqrj+ol095eau+pWOlzaJV0Nc 5576PhyjlHEojSt/c3+Y0bv3VeWRo9qKh6oueRDcSeHv5JVj3z/iYSLS6kF7wJZFAZPcjBvl/yv qB+x7e61NIeZgPTZPYm7jTeno6CwEefrI2YAWA+0HhW4N842tSbihrWlyDJtgtEj1t4ImJkIuvS WH30zwbjdwXEUNB6Cr6laUZeqwftW37tOvAHFbgZAmcJ8NxAFXB9sC6w/sjkV+qF8PGV7wRccto /4EbUyD/pn/qisA== X-Developer-Key: i=caleb.connolly@linaro.org; a=openpgp; fpr=83B24DA7FE145076BC38BB250CD904EB673A7C47 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean MMU issues are some of the most frustrating to debug. To make this slightly less unbearable, introduce a software pagetable walker for ARMv8. This can be called to dump a pagetable with the default formatter, or a custom callback can be provided to implement more complicated parsing. This can also be useful to dump the pagetable used by a previous bootloader stage (by reading out the ttbr register). Here is an example of the output when walking U-Boot's own memory map on a Qualcomm RB3 board: Walking pagetable at 000000017df90000, va_bits: 36. Using 3 levels [0x17df91000] | Table | | [0x17df92000] | Table | | [0x000001000 - 0x000200000] | Pages | Device-nGnRnE | Non-shareable [0x000200000 - 0x040000000] | Block | Device-nGnRnE | Non-shareable [0x040000000 - 0x080000000] | Block | Device-nGnRnE | Non-shareable [0x080000000 - 0x140000000] | Block | Normal | Inner-shareable [0x17df93000] | Table | | [0x140000000 - 0x17de00000] | Block | Normal | Inner-shareable [0x17df94000] | Table | | [0x17de00000 - 0x17dfa0000] | Pages | Normal | Inner-shareable --- Caleb Connolly (2): arm64: mmu.h: fix PTE_TABLE_AP arm64: add software pagetable walker arch/arm/cpu/armv8/cache_v8.c | 202 +++++++++++++++++++++++++++++++++++++++ arch/arm/include/asm/armv8/mmu.h | 57 ++++++++++- 2 files changed, 258 insertions(+), 1 deletion(-) --- change-id: 20240607-caleb-upstreaming-82744a2786b3 base-commit: 22ca7e13dc02be83c29450ae4444add8e150ebdd // Caleb (they/them)