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sparc32,leon: don't rely on bootloader to mask IRQs 

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Hellstrom 2011-04-21 04:20:25 +00:00 committed by David S. Miller
parent 01dae0f08d
commit 970def654e
2 changed files with 7 additions and 0 deletions
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3
arch/sparc/kernel/leon_kernel.c
View File

@ -345,6 +345,9 @@ void __init leon_init_timers(irq_handler_t counter_fn)
icsel = (icsel >> ((7 - (boot_cpu_id&0x7)) * 4)) & 0xf;
leon3_irqctrl_regs += icsel;
/* Mask all IRQs on boot-cpu IRQ controller */
LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->mask[boot_cpu_id], 0);
/* Probe extended IRQ controller */
eirq = (LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->mpstatus)
>> 16) & 0xf;

4
arch/sparc/kernel/leon_smp.c
View File

@ -217,6 +217,10 @@ int __cpuinit leon_boot_one_cpu(int i)
(unsigned int)&leon3_irqctrl_regs->mpstatus);
local_flush_cache_all();
/* Make sure all IRQs are of from the start for this new CPU */
LEON_BYPASS_STORE_PA(&leon3_irqctrl_regs->mask[i], 0);
/* Wake one CPU */
LEON_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mpstatus), 1 << i);
/* wheee... it's going... */