diff options
Diffstat (limited to 'include/asm-mips')
| -rw-r--r-- | include/asm-mips/bootinfo.h | 12 | ||||
| -rw-r--r-- | include/asm-mips/cpu.h | 2 | ||||
| -rw-r--r-- | include/asm-mips/mipsregs.h | 33 | ||||
| -rw-r--r-- | include/asm-mips/war.h | 11 |
4 files changed, 58 insertions, 0 deletions
diff --git a/include/asm-mips/bootinfo.h b/include/asm-mips/bootinfo.h index 12f9d7139eb..94fc9be1aab 100644 --- a/include/asm-mips/bootinfo.h +++ b/include/asm-mips/bootinfo.h @@ -213,6 +213,18 @@ #define MACH_GROUP_LEMOTE 27 #define MACH_LEMOTE_FULONG 0 +/* + * Valid machtype for group PMC-MSP + */ +#define MACH_GROUP_MSP 26 /* PMC-Sierra MSP boards/CPUs */ +#define MACH_MSP4200_EVAL 0 /* PMC-Sierra MSP4200 Evaluation */ +#define MACH_MSP4200_GW 1 /* PMC-Sierra MSP4200 Gateway demo */ +#define MACH_MSP4200_FPGA 2 /* PMC-Sierra MSP4200 Emulation */ +#define MACH_MSP7120_EVAL 3 /* PMC-Sierra MSP7120 Evaluation */ +#define MACH_MSP7120_GW 4 /* PMC-Sierra MSP7120 Residential GW */ +#define MACH_MSP7120_FPGA 5 /* PMC-Sierra MSP7120 Emulation */ +#define MACH_MSP_OTHER 255 /* PMC-Sierra unknown board type */ + #define CL_SIZE COMMAND_LINE_SIZE const char *get_system_type(void); diff --git a/include/asm-mips/cpu.h b/include/asm-mips/cpu.h index a3623954dad..3857358fb6d 100644 --- a/include/asm-mips/cpu.h +++ b/include/asm-mips/cpu.h @@ -109,6 +109,7 @@ * Definitions for 7:0 on legacy processors */ +#define PRID_REV_MASK 0x00ff #define PRID_REV_TX4927 0x0022 #define PRID_REV_TX4937 0x0030 @@ -125,6 +126,7 @@ #define PRID_REV_VR4122 0x0070 #define PRID_REV_VR4181A 0x0070 /* Same as VR4122 */ #define PRID_REV_VR4130 0x0080 +#define PRID_REV_34K_V1_0_2 0x0022 /* * Older processors used to encode processor version and revision in two diff --git a/include/asm-mips/mipsregs.h b/include/asm-mips/mipsregs.h index 668db02c280..706b3691f57 100644 --- a/include/asm-mips/mipsregs.h +++ b/include/asm-mips/mipsregs.h @@ -15,6 +15,7 @@ #include <linux/linkage.h> #include <asm/hazards.h> +#include <asm/war.h> /* * The following macros are especially useful for __asm__ @@ -537,6 +538,9 @@ #define MIPS_CONF7_WII (_ULCAST_(1) << 31) +#define MIPS_CONF7_RPS (_ULCAST_(1) << 2) + + /* * Bits in the MIPS32/64 coprocessor 1 (FPU) revision register. */ @@ -1298,10 +1302,39 @@ static inline void tlb_probe(void) static inline void tlb_read(void) { +#if MIPS34K_MISSED_ITLB_WAR + int res = 0; + + __asm__ __volatile__( + " .set push \n" + " .set noreorder \n" + " .set noat \n" + " .set mips32r2 \n" + " .word 0x41610001 # dvpe $1 \n" + " move %0, $1 \n" + " ehb \n" + " .set pop \n" + : "=r" (res)); + + instruction_hazard(); +#endif + __asm__ __volatile__( ".set noreorder\n\t" "tlbr\n\t" ".set reorder"); + +#if MIPS34K_MISSED_ITLB_WAR + if ((res & _ULCAST_(1))) + __asm__ __volatile__( + " .set push \n" + " .set noreorder \n" + " .set noat \n" + " .set mips32r2 \n" + " .word 0x41600021 # evpe \n" + " ehb \n" + " .set pop \n"); +#endif } static inline void tlb_write_indexed(void) diff --git a/include/asm-mips/war.h b/include/asm-mips/war.h index c507f1b8014..45cb8272483 100644 --- a/include/asm-mips/war.h +++ b/include/asm-mips/war.h @@ -198,6 +198,14 @@ #endif /* + * 34K core erratum: "Problems Executing the TLBR Instruction" + */ +#if defined(CONFIG_PMC_MSP7120_EVAL) || defined(CONFIG_PMC_MSP7120_GW) || \ + defined(CONFIG_PMC_MSP7120_FPGA) +#define MIPS34K_MISSED_ITLB_WAR 1 +#endif + +/* * Workarounds default to off */ #ifndef ICACHE_REFILLS_WORKAROUND_WAR @@ -236,5 +244,8 @@ #ifndef R10000_LLSC_WAR #define R10000_LLSC_WAR 0 #endif +#ifndef MIPS34K_MISSED_ITLB_WAR +#define MIPS34K_MISSED_ITLB_WAR 0 +#endif #endif /* _ASM_WAR_H */ |