diff options
Diffstat (limited to 'arch/mips/include/asm/mach-loongson64/kernel-entry-init.h')
| -rw-r--r-- | arch/mips/include/asm/mach-loongson64/kernel-entry-init.h | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h index b5e288a12dfe..87a5bfbf8cfe 100644 --- a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h +++ b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h @@ -17,7 +17,6 @@ * Override macros used in arch/mips/kernel/head.S. */ .macro kernel_entry_setup -#ifdef CONFIG_CPU_LOONGSON3 .set push .set mips64 /* Set LPA on LOONGSON3 config3 */ @@ -30,23 +29,29 @@ mtc0 t0, CP0_PAGEGRAIN /* Enable STFill Buffer */ mfc0 t0, CP0_PRID + /* Loongson-3A R4+ */ + andi t1, t0, PRID_IMP_MASK + li t2, PRID_IMP_LOONGSON_64G + beq t1, t2, 1f + nop + /* Loongson-3A R2/R3 */ andi t0, (PRID_IMP_MASK | PRID_REV_MASK) - slti t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2_0) - bnez t0, 1f + slti t0, (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0) + bnez t0, 2f + nop +1: mfc0 t0, CP0_CONFIG6 or t0, 0x100 mtc0 t0, CP0_CONFIG6 -1: +2: _ehb .set pop -#endif .endm /* * Do SMP slave processor setup. */ .macro smp_slave_setup -#ifdef CONFIG_CPU_LOONGSON3 .set push .set mips64 /* Set LPA on LOONGSON3 config3 */ @@ -59,16 +64,23 @@ mtc0 t0, CP0_PAGEGRAIN /* Enable STFill Buffer */ mfc0 t0, CP0_PRID + /* Loongson-3A R4+ */ + andi t1, t0, PRID_IMP_MASK + li t2, PRID_IMP_LOONGSON_64G + beq t1, t2, 1f + nop + /* Loongson-3A R2/R3 */ andi t0, (PRID_IMP_MASK | PRID_REV_MASK) - slti t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2_0) - bnez t0, 1f + slti t0, (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0) + bnez t0, 2f + nop +1: mfc0 t0, CP0_CONFIG6 or t0, 0x100 mtc0 t0, CP0_CONFIG6 -1: +2: _ehb .set pop -#endif .endm #endif /* __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H */ |