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| author |   Daniel Hellstrom <daniel@gaisler.com> | 2011-04-21 04:20:25 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2011-04-21 16:44:45 -0700 |
| commit | 970def654e9df1ad28ddb466bb1d123a55e1e7e7 (patch) | |
| tree | 03a4ba50b79cbe40c6f37219026fe9cecb596f40 /arch/sparc | |
| parent | sparc32,leon: operate on boot-cpu IRQ controller registers (diff) | |
| download | linux-dev-970def654e9df1ad28ddb466bb1d123a55e1e7e7.tar.xz linux-dev-970def654e9df1ad28ddb466bb1d123a55e1e7e7.zip | |
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>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/kernel/leon_kernel.c | 3 | ||||
| -rw-r--r-- | arch/sparc/kernel/leon_smp.c | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c index 8417a914e8a3..2f538ac2e139 100644 --- a/arch/sparc/kernel/leon_kernel.c +++ b/arch/sparc/kernel/leon_kernel.c @@ -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; diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c index cbd8e31d01ff..de9506d9ad7d 100644 --- a/arch/sparc/kernel/leon_smp.c +++ b/arch/sparc/kernel/leon_smp.c @@ -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... */ |