[PATCH v2 19/23] target/loongarch: Introduce max32 CPU type

[Jiaxun Yang]

Introduce max32 CPU type as it's necessary to demonstrate all
features we have in LA32.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 target/loongarch/cpu.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)

diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 
720f5b97698abe454c79c2f8fb2a36d0113c5c24..afc6ff30b34af86c611c5866c9c79b3924c69ed7
 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -404,6 +404,97 @@ static void loongarch_la132_initfn(Object *obj)
     env->cpucfg[1] = data;
 }
 
+static void loongarch_max32_initfn(Object *obj)
+{
+    LoongArchCPU *cpu = LOONGARCH_CPU(obj);
+    CPULoongArchState *env = &cpu->env;
+    int i;
+
+    for (i = 0; i < 21; i++) {
+        env->cpucfg[i] = 0x0;
+    }
+
+    cpu->dtb_compatible = "loongarch,la32";
+    env->cpucfg[0] = 0x148042;  /* PRID */
+
+    uint32_t data = 0;
+    data = FIELD_DP32(data, CPUCFG1, ARCH, 1); /* LA32 */
+    data = FIELD_DP32(data, CPUCFG1, PGMMU, 1);
+    data = FIELD_DP32(data, CPUCFG1, IOCSR, 1);
+    data = FIELD_DP32(data, CPUCFG1, PALEN, 0x1f); /* 32 bits */
+    data = FIELD_DP32(data, CPUCFG1, VALEN, 0x1f); /* 32 bits */
+    data = FIELD_DP32(data, CPUCFG1, UAL, 1);
+    data = FIELD_DP32(data, CPUCFG1, HP, 1);
+    data = FIELD_DP32(data, CPUCFG1, IOCSR_BRD, 1);
+    env->cpucfg[1] = data;
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG2, FP, 1);
+    data = FIELD_DP32(data, CPUCFG2, FP_SP, 1);
+    data = FIELD_DP32(data, CPUCFG2, FP_DP, 1);
+    data = FIELD_DP32(data, CPUCFG2, FP_VER, 1);
+    data = FIELD_DP32(data, CPUCFG2, LLFTP, 1);
+    data = FIELD_DP32(data, CPUCFG2, LLFTP_VER, 1);
+    env->cpucfg[2] = data;
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG3, CCDMA, 1);
+    data = FIELD_DP32(data, CPUCFG3, ITLBHMC, 1);
+    data = FIELD_DP32(data, CPUCFG3, ICHMC, 1);
+    env->cpucfg[3] = data;
+
+    env->cpucfg[4] = 100 * 1000 * 1000; /* Crystal frequency */
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG5, CC_MUL, 1);
+    data = FIELD_DP32(data, CPUCFG5, CC_DIV, 1);
+    env->cpucfg[5] = data;
+
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG16, L1_IUPRE, 1);
+    data = FIELD_DP32(data, CPUCFG16, L1_DPRE, 1);
+    data = FIELD_DP32(data, CPUCFG16, L2_IUPRE, 1);
+    data = FIELD_DP32(data, CPUCFG16, L2_IUUNIFY, 1);
+    data = FIELD_DP32(data, CPUCFG16, L2_IUINCL, 1);
+    env->cpucfg[16] = data;
+
+    /* 16K L1I */
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG17, L1IU_WAYS, 3);
+    data = FIELD_DP32(data, CPUCFG17, L1IU_SETS, 7);
+    data = FIELD_DP32(data, CPUCFG17, L1IU_SIZE, 5);
+    env->cpucfg[17] = data;
+
+    /* 16K L1D */
+    data = 0;
+    data = FIELD_DP32(data, CPUCFG18, L1D_WAYS, 3);
+    data = FIELD_DP32(data, CPUCFG18, L1D_SETS, 7);
+    data = FIELD_DP32(data, CPUCFG18, L1D_SIZE, 5);
+    env->cpucfg[18] = data;
+
+    data = 0;
+    /* 128K L2 */
+    data = FIELD_DP32(data, CPUCFG19, L2IU_WAYS, 7);
+    data = FIELD_DP32(data, CPUCFG19, L2IU_SETS, 9);
+    data = FIELD_DP32(data, CPUCFG19, L2IU_SIZE, 5);
+    env->cpucfg[19] = data;
+
+    env->CSR_ASID = FIELD_DP64(0, CSR_ASID, ASIDBITS, 0xa);
+
+    env->CSR_PRCFG1 = FIELD_DP64(env->CSR_PRCFG1, CSR_PRCFG1, SAVE_NUM, 8);
+    env->CSR_PRCFG1 = FIELD_DP64(env->CSR_PRCFG1, CSR_PRCFG1, TIMER_BITS, 31);
+    env->CSR_PRCFG1 = FIELD_DP64(env->CSR_PRCFG1, CSR_PRCFG1, VSMAX, 0);
+
+    env->CSR_PRCFG2 = 0x3ffff000;
+
+    env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, TLB_TYPE, 2);
+    env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, MTLB_ENTRY, 63);
+    env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_WAYS, 7);
+    env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_SETS, 8);
+
+    loongarch_cpu_post_init(obj);
+}
+
 #ifdef TARGET_LOONGARCH64
 static void loongarch_la464_initfn(Object *obj)
 {
@@ -923,6 +1014,7 @@ static const TypeInfo loongarch_cpu_type_infos[] = {
     },
 #endif
     DEFINE_LOONGARCH_CPU_TYPE(32, "la132", loongarch_la132_initfn),
+    DEFINE_LOONGARCH_CPU_TYPE(32, "max32", loongarch_max32_initfn),
 #ifdef TARGET_LOONGARCH64
     DEFINE_LOONGARCH_CPU_TYPE(64, "la464", loongarch_la464_initfn),
     DEFINE_LOONGARCH_CPU_TYPE(64, "max", loongarch_max_initfn),

-- 
2.43.0