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Tue, 26 Mar 2024 16:35:34 -0400 (EDT) From: Jiaxun Yang Subject: [PATCH v2 0/9] MIPS: Unify low-level debugging functionalities Date: Tue, 26 Mar 2024 20:35:32 +0000 Message-Id: <20240326-mips_debug_ll-v2-0-b64abc76f2a1@flygoat.com> Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAJQxA2YC/3XMQQqDMBCF4avIrJsSx6JtV96jiMRkogNqJLGhI t69qfsu/wfv2yGQZwrwzHbwFDmwm1PgJQM9qLknwSY1oMSbLLAUEy+hNdS9+3YchaYKLVHelQo hfRZPlj+n92pSDxxW57eTj/hb/0kRhRRVIcu7QmVM/qjtuPVOrVftJmiO4/gCcNktv6wAAAA= To: Thomas Bogendoerfer Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Jiaxun Yang X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2517; i=jiaxun.yang@flygoat.com; h=from:subject:message-id; bh=PtOUXMjzXjX7s5GqUQPaos1/0Du7txixWN+eg4H2I80=; b=owGbwMvMwCHmXMhTe71c8zDjabUkhjRmw5nOudsX1oSIXk5LP6czIaUnbNLivG9Rk2P1Ep+Lf N1rlpzTUcrCIMbBICumyBIioNS3ofHigusPsv7AzGFlAhnCwMUpABOp4mRkeLF1heDPgjrb44JP eP5cOjJJZ6bv3rNLD+8qeXYmwXXJheuMDH8UFxnt5tl35z2HxrZL7wNPCnNt+B3j0+d4zzviyuo NXAwA X-Developer-Key: i=jiaxun.yang@flygoat.com; a=openpgp; fpr=980379BEFEBFBF477EA04EF9C111949073FC0F67 Hi all, This is a attempt to bring all low-level debugging print functions together and provide a arm-like low-level debugging interface and a further capability to debug early exceptions. This patch elimiate platform specific early_printk, zboot printing functions and cps-vec-ns16550 by newly introduced debug_ll. Hope you'll find them handy :-) Happy hacking! Thanks Signed-off-by: Jiaxun Yang --- Jiaxun Yang (9): MIPS: asm: Move strings to .rodata.str section MIPS: debug: Implement low-level debugging functions MIPS: debug: Hook up DEBUG_LL with early printk MIPS: debug: Provide an early exception vector for low-level debugging MIPS: debug_ll: Add Kconfig symbols for some 8250 uarts MIPS: debug_ll: Implement support for Alchemy uarts MIPS: debug_ll: Implement support for AR933X uarts MIPS: zboot: Convert to use debug_ll facilities MIPS: CPS: Convert to use debug_ll facilities arch/mips/Kconfig | 12 +- arch/mips/Kconfig.debug | 240 +++++++++++++++++++++++-------- arch/mips/boot/compressed/Makefile | 9 +- arch/mips/boot/compressed/dbg.c | 39 ----- arch/mips/boot/compressed/debug-vec.S | 3 + arch/mips/boot/compressed/debug.S | 3 + arch/mips/boot/compressed/decompress.h | 8 +- arch/mips/boot/compressed/head.S | 6 + arch/mips/boot/compressed/uart-16550.c | 49 ------- arch/mips/boot/compressed/uart-alchemy.c | 9 -- arch/mips/boot/compressed/uart-ath79.c | 2 - arch/mips/boot/compressed/uart-prom.c | 9 -- arch/mips/include/asm/asm.h | 2 +- arch/mips/include/debug/8250.S | 60 ++++++++ arch/mips/include/debug/alchemy.S | 46 ++++++ arch/mips/include/debug/ar933x.S | 41 ++++++ arch/mips/include/debug/uhi.S | 48 +++++++ arch/mips/kernel/Makefile | 4 +- arch/mips/kernel/cps-vec.S | 16 +-- arch/mips/kernel/debug-vec.S | 194 +++++++++++++++++++++++++ arch/mips/kernel/debug.S | 130 +++++++++++++++++ arch/mips/kernel/early_printk.c | 19 +++ arch/mips/kernel/head.S | 4 + 23 files changed, 756 insertions(+), 197 deletions(-) --- base-commit: 084c8e315db34b59d38d06e684b1a0dd07d30287 change-id: 20240326-mips_debug_ll-ce72fee1b6a2 Best regards,