[PATCH 1/6] Revert "MIPS: Remove unused R4300 CPU support"
From: Lauri Kasanen <hidden>
Date: 2021-01-04 13:43:27
Subsystem:
mips, the rest · Maintainers:
Thomas Bogendoerfer, Linus Torvalds
This reverts commit f9065b54d437c4660e3d974ad9ce5188c068cd76. We're adding Nintendo 64 support, so the VR4300 is no longer unused. Signed-off-by: Lauri Kasanen <redacted> --- 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/vermagic.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, 33 insertions(+), 1 deletion(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2000bb2..4b52588 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig@@ -1661,6 +1661,15 @@ 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
@@ -1995,6 +2004,9 @@ 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 0d0f29d..d7d8c20 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile@@ -141,6 +141,7 @@ 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 3288cef..2be5d7b 100644
--- a/arch/mips/include/asm/cpu-type.h
+++ b/arch/mips/include/asm/cpu-type.h@@ -122,6 +122,11 @@ 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 c9222cc..9e6211e 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h@@ -302,7 +302,7 @@ enum cpu_type_enum { /* * R4000 class processors */ - CPU_R4000PC, CPU_R4000SC, CPU_R4000MC, CPU_R4200, + CPU_R4000PC, CPU_R4000SC, CPU_R4000MC, CPU_R4200, CPU_R4300, CPU_R4310, CPU_R4400PC, CPU_R4400SC, CPU_R4400MC, CPU_R4600, CPU_R4640, CPU_R4650, CPU_R4700, CPU_R5000, CPU_R5500, CPU_NEVADA, CPU_R10000, CPU_R12000, CPU_R14000, CPU_R16000, CPU_VR41XX, CPU_VR4111, CPU_VR4121,
diff --git a/arch/mips/include/asm/vermagic.h b/arch/mips/include/asm/vermagic.h
index 4d2dae0..371c187 100644
--- a/arch/mips/include/asm/vermagic.h
+++ b/arch/mips/include/asm/vermagic.h@@ -26,6 +26,8 @@ #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 e685369..84f7034 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c@@ -1154,6 +1154,15 @@ 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 18e69eb..1aca3b4 100644
--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c@@ -151,6 +151,7 @@ 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 9cede7c..da7796e 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c@@ -1164,6 +1164,7 @@ 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 a7521b8..0fb1db8 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c@@ -549,6 +549,7 @@ 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: --
2.6.2