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Commit 9267a30d authored by Marc St-Jean's avatar Marc St-Jean Committed by Ralf Baechle
Browse files

[MIPS] PMC MSP71xx mips common 



Patch to add mips common support for the PMC-Sierra MSP71xx devices.

Signed-off-by: default avatarMarc St-Jean <Marc_St-Jean@pmc-sierra.com>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 35832e26

arch/mips/Kconfig

+35 −0
Original line number Diff line number Diff line
@@ -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

arch/mips/Makefile

+10 −1
Original line number Diff line number Diff line
@@ -342,6 +342,14 @@ core-$(CONFIG_MOMENCO_OCELOT) += arch/mips/gt64120/common/ \ 
cflags-$(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

#
@@ -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)

arch/mips/kernel/cpu-probe.c

+20 −0
Original line number Diff line number Diff line
@@ -186,9 +186,29 @@ static inline void check_wait(void) 
	}

}



static inline void check_errata(void)

{

	struct cpuinfo_mips *c = &current_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();

}



/*

arch/mips/kernel/head.S

+4 −1
Original line number Diff line number Diff line
@@ -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

arch/mips/kernel/traps.c

+6 −0
Original line number Diff line number Diff line
@@ -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.