diff options
Diffstat (limited to 'arch/mips/netlogic')
| -rw-r--r-- | arch/mips/netlogic/common/smpboot.S | 47 |
1 files changed, 42 insertions, 5 deletions
diff --git a/arch/mips/netlogic/common/smpboot.S b/arch/mips/netlogic/common/smpboot.S index c4872a714cfe..d6431b7b49fc 100644 --- a/arch/mips/netlogic/common/smpboot.S +++ b/arch/mips/netlogic/common/smpboot.S @@ -80,6 +80,38 @@ * This is the code that will be copied to the reset entry point for * XLR and XLP. The XLP cores start here when they are woken up. This * is also the NMI entry point. + */ +.macro xlp_flush_l1_dcache + li t0, LSU_DEBUG_DATA0 + li t1, LSU_DEBUG_ADDR + li t2, 0 /* index */ + li t3, 0x1000 /* loop count */ +1: + sll v0, t2, 5 + mtcr zero, t0 + ori v1, v0, 0x3 /* way0 | write_enable | write_active */ + mtcr v1, t1 +2: + mfcr v1, t1 + andi v1, 0x1 /* wait for write_active == 0 */ + bnez v1, 2b + nop + mtcr zero, t0 + ori v1, v0, 0x7 /* way1 | write_enable | write_active */ + mtcr v1, t1 +3: + mfcr v1, t1 + andi v1, 0x1 /* wait for write_active == 0 */ + bnez v1, 3b + nop + addi t2, 1 + bne t3, t2, 1b + nop +.endm + +/* + * The cores can come start when they are woken up. This is also the NMI + * entry, so check that first. * * The data corresponding to reset/NMI is stored at RESET_DATA_PHYS * location, this will have the thread mask (used when core is woken up) @@ -138,6 +170,8 @@ FEXPORT(nlm_reset_entry) * a core. */ EXPORT(nlm_boot_siblings) + /* core L1D flush before enable threads */ + xlp_flush_l1_dcache /* Enable hw threads by writing to MAP_THREADMODE of the core */ li t0, CKSEG1ADDR(RESET_DATA_PHYS) lw t1, BOOT_THREAD_MODE(t0) /* t1 <- thread mode */ @@ -164,16 +198,13 @@ EXPORT(nlm_boot_siblings) li t0, MMU_SETUP li t1, 0 mtcr t1, t0 - ehb + _ehb 2: beqz v0, 4f /* boot cpu (cpuid == 0)? */ nop /* setup status reg */ - mfc0 t1, CP0_STATUS - li t0, ST0_BEV - or t1, t0 - xor t1, t0 + move t1, zero #ifdef CONFIG_64BIT ori t1, ST0_KX #endif @@ -220,6 +251,12 @@ FEXPORT(xlp_boot_core0_siblings) /* "Master" cpu starts from here */ __CPUINIT NESTED(nlm_boot_secondary_cpus, 16, sp) + /* Initialize CP0 Status */ + move t1, zero +#ifdef CONFIG_64BIT + ori t1, ST0_KX +#endif + mtc0 t1, CP0_STATUS PTR_LA t1, nlm_next_sp PTR_L sp, 0(t1) PTR_LA t1, nlm_next_gp |