From 4bfc895383ed65b83d55a8ae5738a166c1cc48f1 Mon Sep 17 00:00:00 2001 From: Jiaxun Yang Date: Mon, 31 Oct 2022 13:25:31 +0000 Subject: [PATCH] target/mips: Disable DSP ASE for Octeon68XX MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit I don't have access to Octeon68XX hardware but according to my investigation Octeon never had DSP ASE support. As per "Cavium Networks OCTEON Plus CN50XX Hardware Reference Manual" CP0C3_DSPP is reserved bit and read as 0. Also I do have access to a Ubiquiti Edgerouter 4 which has Octeon CN7130 processor and I can confirm CP0C3_DSPP is read as 0 on that processor. Further more, in linux kernel: arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h cpu_has_dsp is overridden as 0. So I believe we shouldn't emulate DSP in QEMU as well. Signed-off-by: Jiaxun Yang Acked-by: Richard Henderson Reviewed-by: Pavel Dovgalyuk Message-Id: <20221031132531.18122-4-jiaxun.yang@flygoat.com> Signed-off-by: Philippe Mathieu-Daudé --- target/mips/cpu-defs.c.inc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/mips/cpu-defs.c.inc b/target/mips/cpu-defs.c.inc index 7f53c94ec8..480e60aeec 100644 --- a/target/mips/cpu-defs.c.inc +++ b/target/mips/cpu-defs.c.inc @@ -934,7 +934,7 @@ const mips_def_t mips_defs[] = (1 << CP0C1_DS) | (4 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, - .CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_LPA) | (1 << CP0C3_DSPP) , + .CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_LPA), .CP0_Config4 = MIPS_CONFIG4 | (1U << CP0C4_M) | (0x3c << CP0C4_KScrExist) | (1U << CP0C4_MMUExtDef) | (3U << CP0C4_MMUSizeExt), @@ -946,7 +946,7 @@ const mips_def_t mips_defs[] = .CP0_Status_rw_bitmask = 0x12F8FFFF, .SEGBITS = 42, .PABITS = 49, - .insn_flags = CPU_MIPS64R2 | INSN_OCTEON | ASE_DSP, + .insn_flags = CPU_MIPS64R2 | INSN_OCTEON, .mmu_type = MMU_TYPE_R4000, },