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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: Huacai Chen <chenhc@lemote.com> Signed-off-by: Paul 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>
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2 changed files with 14 additions and 12 deletions
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@ -19,18 +19,18 @@
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.set push
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.set mips64
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/* Set LPA on LOONGSON3 config3 */
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mfc0 t0, $16, 3
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mfc0 t0, CP0_CONFIG3
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or t0, (0x1 << 7)
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mtc0 t0, $16, 3
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mtc0 t0, CP0_CONFIG3
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/* Set ELPA on LOONGSON3 pagegrain */
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mfc0 t0, $5, 1
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mfc0 t0, CP0_PAGEGRAIN
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or t0, (0x1 << 29)
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mtc0 t0, $5, 1
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mtc0 t0, CP0_PAGEGRAIN
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#ifdef CONFIG_LOONGSON3_ENHANCEMENT
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/* Enable STFill Buffer */
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mfc0 t0, $16, 6
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mfc0 t0, CP0_CONFIG6
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or t0, 0x100
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mtc0 t0, $16, 6
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mtc0 t0, CP0_CONFIG6
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#endif
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_ehb
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.set pop
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@ -45,18 +45,18 @@
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.set push
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.set mips64
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/* Set LPA on LOONGSON3 config3 */
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mfc0 t0, $16, 3
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mfc0 t0, CP0_CONFIG3
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or t0, (0x1 << 7)
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mtc0 t0, $16, 3
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mtc0 t0, CP0_CONFIG3
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/* Set ELPA on LOONGSON3 pagegrain */
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mfc0 t0, $5, 1
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mfc0 t0, CP0_PAGEGRAIN
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or t0, (0x1 << 29)
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mtc0 t0, $5, 1
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mtc0 t0, CP0_PAGEGRAIN
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#ifdef CONFIG_LOONGSON3_ENHANCEMENT
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/* Enable STFill Buffer */
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mfc0 t0, $16, 6
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mfc0 t0, CP0_CONFIG6
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or t0, 0x100
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mtc0 t0, $16, 6
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mtc0 t0, CP0_CONFIG6
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#endif
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_ehb
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.set pop
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@ -51,6 +51,7 @@
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#define CP0_GLOBALNUMBER $3, 1
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#define CP0_CONTEXT $4
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#define CP0_PAGEMASK $5
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#define CP0_PAGEGRAIN $5, 1
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#define CP0_SEGCTL0 $5, 2
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#define CP0_SEGCTL1 $5, 3
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#define CP0_SEGCTL2 $5, 4
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@ -77,6 +78,7 @@
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#define CP0_CONFIG $16
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#define CP0_CONFIG3 $16, 3
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#define CP0_CONFIG5 $16, 5
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#define CP0_CONFIG6 $16, 6
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#define CP0_LLADDR $17
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#define CP0_WATCHLO $18
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#define CP0_WATCHHI $19
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