MIPS: Add CONFIG_CPU_R5500 for NEC VR5500 series processors

We already have sufficient infrastructure to support VR5500 and VR5500A
series processors.  Here's a Makefile support to make it selectable by
ports, and enable it for NEC EMMA2RH Markeins board.

This patch also fixes a confused target help, and adds 1Gb PageMask bits
supported by VR5500 and its variants.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 files changed, 24 insertions, 3 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 3a83f2a1b240..16fc6155285a 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -249,10 +249,9 @@ config MARKEINS
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_LITTLE_ENDIAN
-        select SYS_HAS_CPU_R5000
+        select SYS_HAS_CPU_R5500
         help
-          This enables support for the R5432-based NEC Mark-eins
-          boards with R5500 CPU.
+          This enables support for the NEC Mark-eins board with VR5500 CPU.
 
 config MACH_VR41XX
         bool "NEC VR4100 series based machines"
@@ -1123,6 +1122,16 @@ config CPU_R5432
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
 
+config CPU_R5500
+        bool "R5500"
+        depends on SYS_HAS_CPU_R5500
+        select CPU_HAS_LLSC
+        select CPU_SUPPORTS_32BIT_KERNEL
+        select CPU_SUPPORTS_64BIT_KERNEL
+        help
+          NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
+          instruction set.
+
 config CPU_R6000
         bool "R6000"
         depends on EXPERIMENTAL
@@ -1233,6 +1242,9 @@ config SYS_HAS_CPU_R5000
 config SYS_HAS_CPU_R5432
         bool
 
+config SYS_HAS_CPU_R5500
+        bool
+
 config SYS_HAS_CPU_R6000
         bool
 
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 8abac786c1f5..a21b12ce903d 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -131,6 +131,8 @@ cflags-$(CONFIG_CPU_MIPS64_R2)	+= $(call cc-option,-march=mips64r2,-mips64r2 -U_
 cflags-$(CONFIG_CPU_R5000)      += -march=r5000 -Wa,--trap
 cflags-$(CONFIG_CPU_R5432)      += $(call cc-option,-march=r5400,-march=r5000) \
                         -Wa,--trap
+cflags-$(CONFIG_CPU_R5500)      += $(call cc-option,-march=r5500,-march=r5000) \
+                        -Wa,--trap
 cflags-$(CONFIG_CPU_NEVADA)     += $(call cc-option,-march=rm5200,-march=r5000) \
                         -Wa,--trap
 cflags-$(CONFIG_CPU_RM7000)     += $(call cc-option,-march=rm7000,-march=r5000) \
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 979866000da4..9316324d070d 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -192,6 +192,7 @@
 #define PM_16M          0x01ffe000
 #define PM_64M          0x07ffe000
 #define PM_256M         0x1fffe000
+#define PM_1G           0x7fffe000
 
 #endif
 
diff --git a/arch/mips/include/asm/module.h b/arch/mips/include/asm/module.h
index de6d09ebbd80..e2e09b2cd265 100644
--- a/arch/mips/include/asm/module.h
+++ b/arch/mips/include/asm/module.h
@@ -98,6 +98,8 @@ search_module_dbetables(unsigned long addr)
 #define MODULE_PROC_FAMILY "R5000 "
 #elif defined CONFIG_CPU_R5432
 #define MODULE_PROC_FAMILY "R5432 "
+#elif defined CONFIG_CPU_R5500
+#define MODULE_PROC_FAMILY "R5500 "
 #elif defined CONFIG_CPU_R6000
 #define MODULE_PROC_FAMILY "R6000 "
 #elif defined CONFIG_CPU_NEVADA
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index d9da7112aaf8..b1372c27f136 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_CPU_R4X00)		+= r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R5000)         += r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R6000)         += r6000_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R5432)         += r4k_fpu.o r4k_switch.o
+obj-$(CONFIG_CPU_R5500)         += r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R8000)         += r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_RM7000)        += r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_RM9000)        += r4k_fpu.o r4k_switch.o
diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile
index 8810dfb915dd..dbcf6511b74e 100644
--- a/arch/mips/lib/Makefile
+++ b/arch/mips/lib/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_CPU_R4300)		+= dump_tlb.o
 obj-$(CONFIG_CPU_R4X00)         += dump_tlb.o
 obj-$(CONFIG_CPU_R5000)         += dump_tlb.o
 obj-$(CONFIG_CPU_R5432)         += dump_tlb.o
+obj-$(CONFIG_CPU_R5500)         += dump_tlb.o
 obj-$(CONFIG_CPU_R6000)         +=
 obj-$(CONFIG_CPU_R8000)         +=
 obj-$(CONFIG_CPU_RM7000)        += dump_tlb.o
diff --git a/arch/mips/lib/dump_tlb.c b/arch/mips/lib/dump_tlb.c
index 465ff0ec85b9..779821cd54ab 100644
--- a/arch/mips/lib/dump_tlb.c
+++ b/arch/mips/lib/dump_tlb.c
@@ -25,6 +25,7 @@ static inline const char *msk2str(unsigned int mask)
         case PM_16M:    return "16Mb";
         case PM_64M:    return "64Mb";
         case PM_256M:   return "256Mb";
+        case PM_1G:     return "1Gb";
 #endif
         }
         return "";
diff --git a/arch/mips/mm/Makefile b/arch/mips/mm/Makefile
index 44e8dd8106bf..95ba32b5b720 100644
--- a/arch/mips/mm/Makefile
+++ b/arch/mips/mm/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_CPU_R4300)		+= c-r4k.o cex-gen.o tlb-r4k.o
 obj-$(CONFIG_CPU_R4X00)         += c-r4k.o cex-gen.o tlb-r4k.o
 obj-$(CONFIG_CPU_R5000)         += c-r4k.o cex-gen.o tlb-r4k.o
 obj-$(CONFIG_CPU_R5432)         += c-r4k.o cex-gen.o tlb-r4k.o
+obj-$(CONFIG_CPU_R5500)         += c-r4k.o cex-gen.o tlb-r4k.o
 obj-$(CONFIG_CPU_R8000)         += c-r4k.o cex-gen.o tlb-r8k.o
 obj-$(CONFIG_CPU_RM7000)        += c-r4k.o cex-gen.o tlb-r4k.o
 obj-$(CONFIG_CPU_RM9000)        += c-r4k.o cex-gen.o tlb-r4k.o