Re: [PATCH 2/2] target/mips: Add definition of Loongson-3A3000 CPU

[Jiaxun Yang]

在 2020/8/13 下午5:41, Kaige Li 写道:

Add definition of the Loongson-3A3000 processor in QEMU.

Hi Kaige,

We're not defining Loongson-3A3000 in QEMU because we have
some features like Loongson-EXT2, VTLB not available currently, I'd
prefer define it after we add these features to TCG.

Loongson-3A4000's define is a exception to support KVM.

Thanks.

- Jiaxun

Signed-off-by: Kaige Li <lika...@loongson.cn>
---
  target/mips/translate_init.inc.c | 24 ++++++++++++++++++++++++
  1 file changed, 24 insertions(+)

diff --git a/target/mips/translate_init.inc.c b/target/mips/translate_init.inc.c
index 0740819..2e98aff 100644
--- a/target/mips/translate_init.inc.c
+++ b/target/mips/translate_init.inc.c
@@ -829,6 +829,30 @@ const mips_def_t mips_defs[] = {
          .PABITS = 48,
          .insn_flags = CPU_LOONGSON3A,
          .mmu_type = MMU_TYPE_R4000,
+   },
+   {
+        .name = "Loongson-3A3000",
+        .CP0_PRid = 0x14630d,
+        /* 64KB I-cache and d-cache. 4 way with 32 bit cache line size.  */
+        .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (0x2 << CP0C0_AT) |
+                       (MMU_TYPE_R4000 << CP0C0_MT),
+        .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (63 << CP0C1_MMU) |
+                       (2 << CP0C1_IS) | (5 << CP0C1_IL) | (3 << CP0C1_IA) |
+                       (2 << CP0C1_DS) | (5 << CP0C1_DL) | (3 << CP0C1_DA) |
+                       (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP),
+        .CP0_Config2 = MIPS_CONFIG2 | (5 << CP0C2_SS) | (5 << CP0C2_SL) |
+                       (15 << CP0C2_SA),
+        .CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_LPA),
+        .SYNCI_Step = 16,
+        .CCRes = 2,
+        .CP0_Status_rw_bitmask = 0x7DDBFFFF,
+        .CP1_fcr0 = (0x5 << FCR0_PRID) | (0x1 << FCR0_REV) | (0x1 << FCR0_F64),
+        .CP1_fcr31 = 0,
+        .CP1_fcr31_rw_bitmask = 0xFF83FFFF,
+        .SEGBITS = 48,
+        .PABITS = 48,
+        .insn_flags = CPU_LOONGSON3A,
+        .mmu_type = MMU_TYPE_R4000,
      },
      {
          .name = "Loongson-3A4000",