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Tue, 29 Apr 2025 17:07:09 -0700 (PDT) Received: from localhost.localdomain ([50.247.98.246]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22db50e7b08sm108953815ad.114.2025.04.29.17.07.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Apr 2025 17:07:08 -0700 (PDT) From: Chao-ying Fu X-Google-Original-From: Chao-ying Fu To: opensbi@lists.infradead.org Cc: Chao-ying Fu Subject: [PATCH v4 3/8] platform: generic: mips: add an entry function Date: Tue, 29 Apr 2025 16:29:23 -0700 Message-ID: <20250429232928.6499-4-cfu@mips.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250429_170711_247765_6FD69D2C X-CRM114-Status: GOOD ( 11.14 ) X-BeenThere: opensbi@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "opensbi" Errors-To: opensbi-bounces+opensbi=archiver.kernel.org@lists.infradead.org The entry function is minimum boot code for harts to execute after reset, nmi, cache error, and debug exception. Signed-off-by: Chao-ying Fu --- platform/generic/mips/cps-vec.S | 75 +++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 platform/generic/mips/cps-vec.S diff --git a/platform/generic/mips/cps-vec.S b/platform/generic/mips/cps-vec.S new file mode 100644 index 0000000..9309e20 --- /dev/null +++ b/platform/generic/mips/cps-vec.S @@ -0,0 +1,75 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2025 MIPS + * + */ + +#include +#include + + .text + .align 12 + .globl mips_cps_core_entry +mips_cps_core_entry: + j 1f + + .align 2 +nmi_vector: + j 1f + + .align 2 +cacheerr_vector: + j 1f + + .align 2 +debugexc_vector: + j 1f + + .align 2 +1: + li x1, 0 + li x2, 0 + li x3, 0 + li x4, 0 + li x5, 0 + li x6, 0 + li x7, 0 + li x8, 0 + li x9, 0 + li x10, 0 +#ifdef FW_FDT_PATH + li x11, 0 +#endif + li x12, 0 + li x13, 0 + li x14, 0 + li x15, 0 + li x16, 0 + li x17, 0 + li x18, 0 + li x19, 0 + li x20, 0 + li x21, 0 + li x22, 0 + li x23, 0 + li x24, 0 + li x25, 0 + li x26, 0 + li x27, 0 + li x28, 0 + li x29, 0 + li x30, 0 + li x31, 0 + + /* a0 has mhartid */ + csrr a0, CSR_MHARTID + + /* Let hart 0 jump to _start */ + beqz a0, 1f + lla t0, _start_warm + jr t0 +1: + lla t0, _start + jr t0 + -- 2.47.1 -- opensbi mailing list opensbi@lists.infradead.org http://lists.infradead.org/mailman/listinfo/opensbi