diff options
| -rw-r--r-- | arch/mips/Kconfig | 35 | ||||
| -rw-r--r-- | arch/mips/Makefile | 11 | ||||
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 20 | ||||
| -rw-r--r-- | arch/mips/kernel/head.S | 5 | ||||
| -rw-r--r-- | arch/mips/kernel/traps.c | 6 | ||||
| -rw-r--r-- | arch/mips/pmc-sierra/Kconfig | 46 | ||||
| -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 |
10 files changed, 179 insertions, 2 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 3994f61..2076d47 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -250,6 +250,7 @@ config MIPS_SIM select DMA_NONCOHERENT select SYS_HAS_EARLY_PRINTK select IRQ_CPU + select BOOT_RAW select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_CPU_MIPS32_R2 select SYS_HAS_EARLY_PRINTK @@ -333,6 +334,27 @@ config MACH_VR41XX select SYS_HAS_CPU_VR41XX select GENERIC_HARDIRQS_NO__DO_IRQ +config PMC_MSP + bool "PMC-Sierra MSP chipsets" + depends on EXPERIMENTAL + select DMA_NONCOHERENT + select SWAP_IO_SPACE + select NO_EXCEPT_FILL + select BOOT_RAW + select SYS_HAS_CPU_MIPS32_R1 + select SYS_HAS_CPU_MIPS32_R2 + select SYS_SUPPORTS_32BIT_KERNEL + select SYS_SUPPORTS_BIG_ENDIAN + select SYS_SUPPORTS_KGDB + select IRQ_CPU + select SERIAL_8250 + select SERIAL_8250_CONSOLE + help + This adds support for the PMC-Sierra family of Multi-Service + Processor System-On-A-Chips. These parts include a number + of integrated peripherals, interfaces and DSPs in addition to + a variety of MIPS cores. + config PMC_YOSEMITE bool "PMC-Sierra Yosemite eval board" select DMA_COHERENT @@ -706,6 +728,9 @@ config ARC config ARCH_MAY_HAVE_PC_FDC bool +config BOOT_RAW + bool + config DMA_COHERENT bool @@ -812,6 +837,12 @@ config IRQ_CPU_RM7K config IRQ_CPU_RM9K bool +config IRQ_MSP_SLP + bool + +config IRQ_MSP_CIC + bool + config IRQ_MV64340 bool @@ -825,6 +856,9 @@ config MIPS_BOARDS_GEN config PCI_GT64XXX_PCI0 bool +config NO_EXCEPT_FILL + bool + config MIPS_TX3927 bool select HAS_TXX9_SERIAL @@ -886,6 +920,7 @@ config MIPS_L1_CACHE_SHIFT int default "4" if MACH_DECSTATION || SNI_RM default "7" if SGI_IP27 + default "4" if PMC_MSP4200_EVAL default "5" config HAVE_STD_PC_SERIAL_PORT diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 6642ee5..2b9af2f 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -343,6 +343,14 @@ cflags-$(CONFIG_MOMENCO_OCELOT) += -Iinclude/asm-mips/mach-ocelot load-$(CONFIG_MOMENCO_OCELOT) += 0xffffffff80100000 # +# PMC-Sierra MSP SOCs +# +core-$(CONFIG_PMC_MSP) += arch/mips/pmc-sierra/msp71xx/ +cflags-$(CONFIG_PMC_MSP) += -Iinclude/asm-mips/pmc-sierra/msp71xx \ + -mno-branch-likely +load-$(CONFIG_PMC_MSP) += 0xffffffff80100000 + +# # PMC-Sierra Yosemite # core-$(CONFIG_PMC_YOSEMITE) += arch/mips/pmc-sierra/yosemite/ @@ -595,7 +603,8 @@ JIFFIES = jiffies_64 endif AFLAGS += $(cflags-y) -CFLAGS += $(cflags-y) +CFLAGS += $(cflags-y) \ + -D"VMLINUX_LOAD_ADDRESS=$(load-y)" LDFLAGS += -m $(ld-emul) diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 23d8a3b..c6b8b07 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -186,9 +186,29 @@ static inline void check_wait(void) } } +static inline void check_errata(void) +{ + struct cpuinfo_mips *c = ¤t_cpu_data; + + switch (c->cputype) { + case CPU_34K: + /* + * Erratum "RPS May Cause Incorrect Instruction Execution" + * This code only handles VPE0, any SMP/SMTC/RTOS code + * making use of VPE1 will be responsable for that VPE. + */ + if ((c->processor_id & PRID_REV_MASK) <= PRID_REV_34K_V1_0_2) + write_c0_config7(read_c0_config7() | MIPS_CONF7_RPS); + break; + default: + break; + } +} + void __init check_bugs32(void) { check_wait(); + check_errata(); } /* diff --git a/arch/mips/kernel/head.S b/arch/mips/kernel/head.S index 1f096aa..f78538e 100644 --- a/arch/mips/kernel/head.S +++ b/arch/mips/kernel/head.S @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/threads.h> +#include <asm/addrspace.h> #include <asm/asm.h> #include <asm/asmmacro.h> #include <asm/irqflags.h> @@ -129,16 +130,18 @@ #endif .endm +#ifndef CONFIG_NO_EXCEPT_FILL /* * Reserved space for exception handlers. * Necessary for machines which link their kernels at KSEG0. */ .fill 0x400 +#endif EXPORT(stext) # used for profiling EXPORT(_stext) -#ifndef CONFIG_MIPS_SIM +#ifdef CONFIG_BOOT_RAW /* * Give us a fighting chance of running if execution beings at the * kernel load address. This is needed because this platform does diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 9b19a84..80ea4fa 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -69,6 +69,7 @@ extern asmlinkage void handle_reserved(void); extern int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx, int has_fpu); +void (*board_watchpoint_handler)(struct pt_regs *regs); void (*board_be_init)(void); int (*board_be_handler)(struct pt_regs *regs, int is_fixup); void (*board_nmi_handler_setup)(void); @@ -833,6 +834,11 @@ asmlinkage void do_mdmx(struct pt_regs *regs) asmlinkage void do_watch(struct pt_regs *regs) { + if (board_watchpoint_handler) { + (*board_watchpoint_handler)(regs); + return; + } + /* * We use the watch exception where available to detect stack * overflows. diff --git a/arch/mips/pmc-sierra/Kconfig b/arch/mips/pmc-sierra/Kconfig index 24d514c..abbd0bb 100644 --- a/arch/mips/pmc-sierra/Kconfig +++ b/arch/mips/pmc-sierra/Kconfig @@ -1,3 +1,49 @@ +choice + prompt "PMC-Sierra MSP SOC type" + depends on PMC_MSP + +config PMC_MSP4200_EVAL + bool "PMC-Sierra MSP4200 Eval Board" + select IRQ_MSP_SLP + select HW_HAS_PCI + +config PMC_MSP4200_GW + bool "PMC-Sierra MSP4200 VoIP Gateway" + select IRQ_MSP_SLP + select HW_HAS_PCI + +config PMC_MSP7120_EVAL + bool "PMC-Sierra MSP7120 Eval Board" + select SYS_SUPPORTS_MULTITHREADING + select IRQ_MSP_CIC + select HW_HAS_PCI + +config PMC_MSP7120_GW + bool "PMC-Sierra MSP7120 Residential Gateway" + select SYS_SUPPORTS_MULTITHREADING + select IRQ_MSP_CIC + select HW_HAS_PCI + +config PMC_MSP7120_FPGA + bool "PMC-Sierra MSP7120 FPGA" + select SYS_SUPPORTS_MULTITHREADING + select IRQ_MSP_CIC + select HW_HAS_PCI + +endchoice + +menu "Options for PMC-Sierra MSP chipsets" + depends on PMC_MSP + +config PMC_MSP_EMBEDDED_ROOTFS + bool "Root filesystem embedded in kernel image" + select MTD + select MTD_BLOCK + select MTD_PMC_MSP_RAMROOT + select MTD_RAM + +endmenu + config HYPERTRANSPORT bool "Hypertransport Support for PMC-Sierra Yosemite" depends on PMC_YOSEMITE diff --git a/include/asm-mips/bootinfo.h b/include/asm-mips/bootinfo.h index 12f9d71..94fc9be 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 a362395..3857358 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 668db02..706b369 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 c507f1b..45cb827 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 */ |