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Unverified Commit 97ab1bb4 authored by Huacai Chen's avatar Huacai Chen Committed by Paul Burton
Browse files

MIPS: Loongson64: Define and use some CP0 registers 



Defines CP0_CONFIG3, CP0_CONFIG6, CP0_PAGEGRAIN and use them in
kernel-entry-init.h for Loongson64.

Signed-off-by: default avatarHuacai Chen <chenhc@lemote.com>
Signed-off-by: default avatarPaul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19264/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <james.hogan@mips.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
parent 7cff3f16

arch/mips/include/asm/mach-loongson64/kernel-entry-init.h

+12 −12
Original line number Diff line number Diff line
@@ -19,18 +19,18 @@ 
	.set	push

	.set	mips64

	/* Set LPA on LOONGSON3 config3 */

	mfc0	t0, $16, 3

	mfc0	t0, CP0_CONFIG3

	or	t0, (0x1 << 7)

	mtc0	t0, $16, 3

	mtc0	t0, CP0_CONFIG3

	/* Set ELPA on LOONGSON3 pagegrain */

	mfc0	t0, $5, 1

	mfc0	t0, CP0_PAGEGRAIN

	or	t0, (0x1 << 29)

	mtc0	t0, $5, 1

	mtc0	t0, CP0_PAGEGRAIN

#ifdef CONFIG_LOONGSON3_ENHANCEMENT

	/* Enable STFill Buffer */

	mfc0	t0, $16, 6

	mfc0	t0, CP0_CONFIG6

	or	t0, 0x100

	mtc0	t0, $16, 6

	mtc0	t0, CP0_CONFIG6

#endif

	_ehb

	.set	pop
@@ -45,18 +45,18 @@ 
	.set	push

	.set	mips64

	/* Set LPA on LOONGSON3 config3 */

	mfc0	t0, $16, 3

	mfc0	t0, CP0_CONFIG3

	or	t0, (0x1 << 7)

	mtc0	t0, $16, 3

	mtc0	t0, CP0_CONFIG3

	/* Set ELPA on LOONGSON3 pagegrain */

	mfc0	t0, $5, 1

	mfc0	t0, CP0_PAGEGRAIN

	or	t0, (0x1 << 29)

	mtc0	t0, $5, 1

	mtc0	t0, CP0_PAGEGRAIN

#ifdef CONFIG_LOONGSON3_ENHANCEMENT

	/* Enable STFill Buffer */

	mfc0	t0, $16, 6

	mfc0	t0, CP0_CONFIG6

	or	t0, 0x100

	mtc0	t0, $16, 6

	mtc0	t0, CP0_CONFIG6

#endif

	_ehb

	.set	pop

arch/mips/include/asm/mipsregs.h

+2 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ 
#define CP0_GLOBALNUMBER $3, 1

#define CP0_CONTEXT $4

#define CP0_PAGEMASK $5

#define CP0_PAGEGRAIN $5, 1

#define CP0_SEGCTL0 $5, 2

#define CP0_SEGCTL1 $5, 3

#define CP0_SEGCTL2 $5, 4
@@ -77,6 +78,7 @@ 
#define CP0_CONFIG $16

#define CP0_CONFIG3 $16, 3

#define CP0_CONFIG5 $16, 5

#define CP0_CONFIG6 $16, 6

#define CP0_LLADDR $17

#define CP0_WATCHLO $18

#define CP0_WATCHHI $19