diff options
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/kernel/process.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index 0b1d5dd7a93..91516dca4a8 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -5,6 +5,7 @@ * Copyright (C) 1995 Linus Torvalds * * SuperH version: Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima + * Copyright (C) 2006 Lineo Solutions Inc. support SH4A UBC */ /* @@ -290,6 +291,24 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp, static void ubc_set_tracing(int asid, unsigned long pc) { +#if defined(CONFIG_CPU_SH4A) + unsigned long val; + + val = (UBC_CBR_ID_INST | UBC_CBR_RW_READ | UBC_CBR_CE); + val |= (UBC_CBR_AIE | UBC_CBR_AIV_SET(asid)); + + ctrl_outl(val, UBC_CBR0); + ctrl_outl(pc, UBC_CAR0); + ctrl_outl(0x0, UBC_CAMR0); + ctrl_outl(0x0, UBC_CBCR); + + val = (UBC_CRR_RES | UBC_CRR_PCB | UBC_CRR_BIE); + ctrl_outl(val, UBC_CRR0); + + /* Read UBC register that we writed last. For chekking UBC Register changed */ + val = ctrl_inl(UBC_CRR0); + +#else /* CONFIG_CPU_SH4A */ ctrl_outl(pc, UBC_BARA); #ifdef CONFIG_MMU @@ -307,6 +326,7 @@ ubc_set_tracing(int asid, unsigned long pc) ctrl_outw(BBR_INST | BBR_READ, UBC_BBRA); ctrl_outw(BRCR_PCBA, UBC_BRCR); } +#endif /* CONFIG_CPU_SH4A */ } /* @@ -359,8 +379,13 @@ struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *ne #endif ubc_set_tracing(asid, next->thread.ubc_pc); } else { +#if defined(CONFIG_CPU_SH4A) + ctrl_outl(UBC_CBR_INIT, UBC_CBR0); + ctrl_outl(UBC_CRR_INIT, UBC_CRR0); +#else ctrl_outw(0, UBC_BBRA); ctrl_outw(0, UBC_BBRB); +#endif } return prev; @@ -460,8 +485,13 @@ asmlinkage void break_point_trap(unsigned long r4, unsigned long r5, struct pt_regs regs) { /* Clear tracing. */ +#if defined(CONFIG_CPU_SH4A) + ctrl_outl(UBC_CBR_INIT, UBC_CBR0); + ctrl_outl(UBC_CRR_INIT, UBC_CRR0); +#else ctrl_outw(0, UBC_BBRA); ctrl_outw(0, UBC_BBRB); +#endif current->thread.ubc_pc = 0; ubc_usercnt -= 1; |