[PATCH 1/4] MIPS: Remove unused R4300 CPU support

* [PATCH 1/4] MIPS: Remove unused R4300 CPU support
@ 2019-07-22 21:59 Paul Burton
  2019-07-22 21:59 ` [PATCH 2/4] MIPS: Remove unused R5432 " Paul Burton
                   ` (3 more replies)
  0 siblings, 4 replies; 7+ messages in thread
From: Paul Burton @ 2019-07-22 21:59 UTC (permalink / raw)
  To: linux-mips; +Cc: Paul Burton

Our R4300 CPU support can only be included if a system selects
CONFIG_SYS_HAS_CPU_R4300. No system does, making all R4300-related CPU
support dead code. Remove it.

Signed-off-by: Paul Burton <paul.burton@mips.com>
---

 arch/mips/Kconfig                | 12 ------------
 arch/mips/Makefile               |  1 -
 arch/mips/include/asm/cpu-type.h |  5 -----
 arch/mips/include/asm/cpu.h      |  2 +-
 arch/mips/include/asm/module.h   |  2 --
 arch/mips/kernel/cpu-probe.c     |  9 ---------
 arch/mips/kernel/idle.c          |  1 -
 arch/mips/mm/c-r4k.c             |  1 -
 arch/mips/mm/tlbex.c             |  1 -
 9 files changed, 1 insertion(+), 33 deletions(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index d50fafd7bf3a..2b28c6b02ff9 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1599,15 +1599,6 @@ config CPU_VR41XX
 	  kernel built with this option will not run on any other type of
 	  processor or vice versa.
 
-config CPU_R4300
-	bool "R4300"
-	depends on SYS_HAS_CPU_R4300
-	select CPU_SUPPORTS_32BIT_KERNEL
-	select CPU_SUPPORTS_64BIT_KERNEL
-	select CPU_HAS_LOAD_STORE_LR
-	help
-	  MIPS Technologies R4300-series processors.
-
 config CPU_R4X00
 	bool "R4x00"
 	depends on SYS_HAS_CPU_R4X00
@@ -1969,9 +1960,6 @@ config SYS_HAS_CPU_TX39XX
 config SYS_HAS_CPU_VR41XX
 	bool
 
-config SYS_HAS_CPU_R4300
-	bool
-
 config SYS_HAS_CPU_R4X00
 	bool
 
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index eceff9b75b22..e728d0555466 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -163,7 +163,6 @@ cflags-y += -fno-stack-check
 #
 cflags-$(CONFIG_CPU_R3000)	+= -march=r3000
 cflags-$(CONFIG_CPU_TX39XX)	+= -march=r3900
-cflags-$(CONFIG_CPU_R4300)	+= -march=r4300 -Wa,--trap
 cflags-$(CONFIG_CPU_VR41XX)	+= -march=r4100 -Wa,--trap
 cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap
 cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
diff --git a/arch/mips/include/asm/cpu-type.h b/arch/mips/include/asm/cpu-type.h
index a45af3de075d..9774e6d0403f 100644
--- a/arch/mips/include/asm/cpu-type.h
+++ b/arch/mips/include/asm/cpu-type.h
@@ -116,11 +116,6 @@ static inline int __pure __get_cpu_type(const int cpu_type)
 	case CPU_VR4181A:
 #endif
 
-#ifdef CONFIG_SYS_HAS_CPU_R4300
-	case CPU_R4300:
-	case CPU_R4310:
-#endif
-
 #ifdef CONFIG_SYS_HAS_CPU_R4X00
 	case CPU_R4000PC:
 	case CPU_R4000SC:
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index 290369fa44a4..c70c43fc9e09 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -293,7 +293,7 @@ enum cpu_type_enum {
 	/*
 	 * R4000 class processors
 	 */
-	CPU_R4000PC, CPU_R4000SC, CPU_R4000MC, CPU_R4200, CPU_R4300, CPU_R4310,
+	CPU_R4000PC, CPU_R4000SC, CPU_R4000MC, CPU_R4200,
 	CPU_R4400PC, CPU_R4400SC, CPU_R4400MC, CPU_R4600, CPU_R4640, CPU_R4650,
 	CPU_R4700, CPU_R5000, CPU_R5500, CPU_NEVADA, CPU_R5432, CPU_R10000,
 	CPU_R12000, CPU_R14000, CPU_R16000, CPU_VR41XX, CPU_VR4111, CPU_VR4121,
diff --git a/arch/mips/include/asm/module.h b/arch/mips/include/asm/module.h
index 6dc0b21b8acd..eaf3f37ed583 100644
--- a/arch/mips/include/asm/module.h
+++ b/arch/mips/include/asm/module.h
@@ -103,8 +103,6 @@ search_module_dbetables(unsigned long addr)
 #define MODULE_PROC_FAMILY "TX39XX "
 #elif defined CONFIG_CPU_VR41XX
 #define MODULE_PROC_FAMILY "VR41XX "
-#elif defined CONFIG_CPU_R4300
-#define MODULE_PROC_FAMILY "R4300 "
 #elif defined CONFIG_CPU_R4X00
 #define MODULE_PROC_FAMILY "R4X00 "
 #elif defined CONFIG_CPU_TX49XX
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 9635c1db3ae6..d70bd6542a9f 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1384,15 +1384,6 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
 			break;
 		}
 		break;
-	case PRID_IMP_R4300:
-		c->cputype = CPU_R4300;
-		__cpu_name[cpu] = "R4300";
-		set_isa(c, MIPS_CPU_ISA_III);
-		c->fpu_msk31 |= FPU_CSR_CONDX;
-		c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
-			     MIPS_CPU_LLSC;
-		c->tlbsize = 32;
-		break;
 	case PRID_IMP_R4600:
 		c->cputype = CPU_R4600;
 		__cpu_name[cpu] = "R4600";
diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c
index 7388f1374d5f..7cc0af34c6e6 100644
--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c
@@ -151,7 +151,6 @@ void __init check_wait(void)
 		cpu_wait = r39xx_wait;
 		break;
 	case CPU_R4200:
-/*	case CPU_R4300: */
 	case CPU_R4600:
 	case CPU_R4640:
 	case CPU_R4650:
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 5166e38cd1c6..07d9aa4f7491 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1134,7 +1134,6 @@ static void probe_pcache(void)
 	case CPU_R4400PC:
 	case CPU_R4400SC:
 	case CPU_R4400MC:
-	case CPU_R4300:
 		icache_size = 1 << (12 + ((config & CONF_IC) >> 9));
 		c->icache.linesz = 16 << ((config & CONF_IB) >> 5);
 		c->icache.ways = 1;
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 144ceb0fba88..b5dde6f4423c 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -545,7 +545,6 @@ void build_tlb_write_entry(u32 **p, struct uasm_label **l,
 		tlbw(p);
 		break;
 
-	case CPU_R4300:
 	case CPU_5KC:
 	case CPU_TX49XX:
 	case CPU_PR4450:
-- 
2.22.0


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