diff options
Diffstat (limited to 'arch/blackfin/mach-bf561/smp.c')
| -rw-r--r-- | arch/blackfin/mach-bf561/smp.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/blackfin/mach-bf561/smp.c b/arch/blackfin/mach-bf561/smp.c index 90369429ee6..3b9a4bf7dac 100644 --- a/arch/blackfin/mach-bf561/smp.c +++ b/arch/blackfin/mach-bf561/smp.c @@ -65,6 +65,8 @@ void __cpuinit platform_secondary_init(unsigned int cpu) bfin_write_SICB_IAR5(bfin_read_SICA_IAR5()); bfin_write_SICB_IAR6(bfin_read_SICA_IAR6()); bfin_write_SICB_IAR7(bfin_read_SICA_IAR7()); + bfin_write_SICB_IWR0(IWR_DISABLE_ALL); + bfin_write_SICB_IWR1(IWR_DISABLE_ALL); SSYNC(); /* Store CPU-private information to the cpu_data array. */ @@ -80,17 +82,18 @@ int __cpuinit platform_boot_secondary(unsigned int cpu, struct task_struct *idle { unsigned long timeout; - /* CoreB already running?! */ - BUG_ON((bfin_read_SICA_SYSCR() & COREB_SRAM_INIT) == 0); - printk(KERN_INFO "Booting Core B.\n"); spin_lock(&boot_lock); - /* Kick CoreB, which should start execution from CORE_SRAM_BASE. */ - SSYNC(); - bfin_write_SICA_SYSCR(bfin_read_SICA_SYSCR() & ~COREB_SRAM_INIT); - SSYNC(); + if ((bfin_read_SICA_SYSCR() & COREB_SRAM_INIT) == 0) { + /* CoreB already running, sending ipi to wakeup it */ + platform_send_ipi_cpu(cpu, IRQ_SUPPLE_0); + } else { + /* Kick CoreB, which should start execution from CORE_SRAM_BASE. */ + bfin_write_SICA_SYSCR(bfin_read_SICA_SYSCR() & ~COREB_SRAM_INIT); + SSYNC(); + } timeout = jiffies + 1 * HZ; while (time_before(jiffies, timeout)) { |