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[V5,1/8] MIPS: Loongson: Add Loongson-3A R2.1 basic support

Message ID 1542261057-6019-2-git-send-email-chenhc@lemote.com (mailing list archive)
State Not Applicable
Headers show
Series MIPS: Loongson: new features and improvements | expand

Commit Message

Huacai Chen Nov. 15, 2018, 5:50 a.m. UTC 
Loongson-3A R2.1 is the bugfix revision of Loongson-3A R2.

All Loongson-3 CPU family:

Code-name         Brand-name       PRId
Loongson-3A R1    Loongson-3A1000  0x6305
Loongson-3A R2    Loongson-3A2000  0x6308
Loongson-3A R2.1  Loongson-3A2000  0x630c
Loongson-3A R3    Loongson-3A3000  0x6309
Loongson-3A R3.1  Loongson-3A3000  0x630d
Loongson-3B R1    Loongson-3B1000  0x6306
Loongson-3B R2    Loongson-3B1500  0x6307

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <james.hogan@mips.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
---
 arch/mips/include/asm/cpu.h                               | 3 ++-
 arch/mips/include/asm/mach-loongson64/kernel-entry-init.h | 4 ++--
 arch/mips/kernel/cpu-probe.c                              | 3 ++-
 arch/mips/kernel/idle.c                                   | 2 +-
 arch/mips/loongson64/common/env.c                         | 3 ++-
 arch/mips/loongson64/loongson-3/smp.c                     | 3 ++-
 arch/mips/mm/c-r4k.c                                      | 2 +-
 drivers/platform/mips/cpu_hwmon.c                         | 3 ++-
 8 files changed, 14 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index dacbdb8..532b49b 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -248,8 +248,9 @@ 
 #define PRID_REV_LOONGSON3A_R1		0x0005
 #define PRID_REV_LOONGSON3B_R1		0x0006
 #define PRID_REV_LOONGSON3B_R2		0x0007
-#define PRID_REV_LOONGSON3A_R2		0x0008
+#define PRID_REV_LOONGSON3A_R2_0	0x0008
 #define PRID_REV_LOONGSON3A_R3_0	0x0009
+#define PRID_REV_LOONGSON3A_R2_1	0x000c
 #define PRID_REV_LOONGSON3A_R3_1	0x000d
 
 /*
diff --git a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
index cbac603..b5e288a 100644
--- a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
+++ b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
@@ -31,7 +31,7 @@ 
 	/* Enable STFill Buffer */
 	mfc0	t0, CP0_PRID
 	andi	t0, (PRID_IMP_MASK | PRID_REV_MASK)
-	slti	t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2)
+	slti	t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2_0)
 	bnez	t0, 1f
 	mfc0	t0, CP0_CONFIG6
 	or	t0, 0x100
@@ -60,7 +60,7 @@ 
 	/* Enable STFill Buffer */
 	mfc0	t0, CP0_PRID
 	andi	t0, (PRID_IMP_MASK | PRID_REV_MASK)
-	slti	t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2)
+	slti	t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2_0)
 	bnez	t0, 1f
 	mfc0	t0, CP0_CONFIG6
 	or	t0, 0x100
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 71dcef8..65dc2e6 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1871,7 +1871,8 @@  static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
 	switch (c->processor_id & PRID_IMP_MASK) {
 	case PRID_IMP_LOONGSON_64:  /* Loongson-2/3 */
 		switch (c->processor_id & PRID_REV_MASK) {
-		case PRID_REV_LOONGSON3A_R2:
+		case PRID_REV_LOONGSON3A_R2_0:
+		case PRID_REV_LOONGSON3A_R2_1:
 			c->cputype = CPU_LOONGSON3;
 			__cpu_name[cpu] = "ICT Loongson-3";
 			set_elf_platform(cpu, "loongson3a");
diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c
index 4d335b1..695f554 100644
--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c
@@ -184,7 +184,7 @@  void __init check_wait(void)
 		cpu_wait = r4k_wait;
 		break;
 	case CPU_LOONGSON3:
-		if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON3A_R2)
+		if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON3A_R2_0)
 			cpu_wait = r4k_wait;
 		break;
 
diff --git a/arch/mips/loongson64/common/env.c b/arch/mips/loongson64/common/env.c
index 8f68ee0..72e5f8f 100644
--- a/arch/mips/loongson64/common/env.c
+++ b/arch/mips/loongson64/common/env.c
@@ -197,7 +197,8 @@  void __init prom_init_env(void)
 			cpu_clock_freq = 797000000;
 			break;
 		case PRID_REV_LOONGSON3A_R1:
-		case PRID_REV_LOONGSON3A_R2:
+		case PRID_REV_LOONGSON3A_R2_0:
+		case PRID_REV_LOONGSON3A_R2_1:
 		case PRID_REV_LOONGSON3A_R3_0:
 		case PRID_REV_LOONGSON3A_R3_1:
 			cpu_clock_freq = 900000000;
diff --git a/arch/mips/loongson64/loongson-3/smp.c b/arch/mips/loongson64/loongson-3/smp.c
index b5c1e0a..8fba0aa 100644
--- a/arch/mips/loongson64/loongson-3/smp.c
+++ b/arch/mips/loongson64/loongson-3/smp.c
@@ -682,7 +682,8 @@  void play_dead(void)
 		play_dead_at_ckseg1 =
 			(void *)CKSEG1ADDR((unsigned long)loongson3a_r1_play_dead);
 		break;
-	case PRID_REV_LOONGSON3A_R2:
+	case PRID_REV_LOONGSON3A_R2_0:
+	case PRID_REV_LOONGSON3A_R2_1:
 	case PRID_REV_LOONGSON3A_R3_0:
 	case PRID_REV_LOONGSON3A_R3_1:
 		play_dead_at_ckseg1 =
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 05bd777..7e430b4 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1352,7 +1352,7 @@  static void probe_pcache(void)
 					  c->dcache.ways *
 					  c->dcache.linesz;
 		c->dcache.waybit = 0;
-		if ((prid & PRID_REV_MASK) >= PRID_REV_LOONGSON3A_R2)
+		if ((prid & PRID_REV_MASK) >= PRID_REV_LOONGSON3A_R2_0)
 			c->options |= MIPS_CPU_PREFETCH;
 		break;
 
diff --git a/drivers/platform/mips/cpu_hwmon.c b/drivers/platform/mips/cpu_hwmon.c
index f66521c..42efcb8 100644
--- a/drivers/platform/mips/cpu_hwmon.c
+++ b/drivers/platform/mips/cpu_hwmon.c
@@ -25,9 +25,10 @@  int loongson3_cpu_temp(int cpu)
 	case PRID_REV_LOONGSON3A_R1:
 		reg = (reg >> 8) & 0xff;
 		break;
-	case PRID_REV_LOONGSON3A_R2:
 	case PRID_REV_LOONGSON3B_R1:
 	case PRID_REV_LOONGSON3B_R2:
+	case PRID_REV_LOONGSON3A_R2_0:
+	case PRID_REV_LOONGSON3A_R2_1:
 		reg = ((reg >> 8) & 0xff) - 100;
 		break;
 	case PRID_REV_LOONGSON3A_R3_0: