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| author | Konrad Eisele <konrad@gaisler.com> | 2009-09-01 02:08:13 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-02 15:19:42 +0300 |
| commit | 8401707ff645521e9f21cbb8fe3b138f60e85680 (patch) | |
| tree | 114287cf273b57f96d0e132cd2274c7afe60b120 /arch/sparc/kernel/entry.S | |
| parent | b6727b12dd2ffb4a890eb5b13a298230c29ba45d (diff) | |
| download | linux-8401707ff645521e9f21cbb8fe3b138f60e85680.tar.xz | |
sparc,leon: Sparc-Leon SMP support
Support SMP for a Sparc-Leon multiprocessor system.
Add Leon specific SMP code to arch/sparc/kernel/leon_smp.c.
Signed-off-by: Konrad Eisele <konrad@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/entry.S')
| -rw-r--r-- | arch/sparc/kernel/entry.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index f41ecc5ac0b4..ec9c7bc67d21 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -400,6 +400,39 @@ linux_trap_ipi15_sun4d: /* FIXME */ 1: b,a 1b +#ifdef CONFIG_SPARC_LEON + + .globl smpleon_ticker + /* SMP per-cpu ticker interrupts are handled specially. */ +smpleon_ticker: + SAVE_ALL + or %l0, PSR_PIL, %g2 + wr %g2, 0x0, %psr + WRITE_PAUSE + wr %g2, PSR_ET, %psr + WRITE_PAUSE + call leon_percpu_timer_interrupt + add %sp, STACKFRAME_SZ, %o0 + wr %l0, PSR_ET, %psr + WRITE_PAUSE + RESTORE_ALL + + .align 4 + .globl linux_trap_ipi15_leon +linux_trap_ipi15_leon: + SAVE_ALL + or %l0, PSR_PIL, %l4 + wr %l4, 0x0, %psr + WRITE_PAUSE + wr %l4, PSR_ET, %psr + WRITE_PAUSE + call leon_cross_call_irq + nop + b ret_trap_lockless_ipi + clr %l6 + +#endif /* CONFIG_SPARC_LEON */ + #endif /* CONFIG_SMP */ /* This routine handles illegal instructions and privileged |