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Blackfin arch: SMP supporting patchset: Blackfin kernel and memory management code

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Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like

In this patch, we provide SMP extend to Blackfin kernel and memory management code

Singed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Graf Yang
2008-11-18 17:48:22 +08:00
committed by Bryan Wu
parent b8a989893c
commit 8f65873e47
14 changed files with 599 additions and 328 deletions
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24
arch/blackfin/kernel/reboot.c
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@@ -21,7 +21,7 @@
* the core reset.
*/
__attribute__((l1_text))
static void bfin_reset(void)
static void _bfin_reset(void)
{
/* Wait for completion of "system" events such as cache line
* line fills so that we avoid infinite stalls later on as
@@ -66,6 +66,18 @@ static void bfin_reset(void)
}
}
static void bfin_reset(void)
{
if (ANOMALY_05000353 || ANOMALY_05000386)
_bfin_reset();
else
/* the bootrom checks to see how it was reset and will
* automatically perform a software reset for us when
* it starts executing boot
*/
asm("raise 1;");
}
__attribute__((weak))
void native_machine_restart(char *cmd)
{
@@ -75,14 +87,10 @@ void machine_restart(char *cmd)
{
native_machine_restart(cmd);
local_irq_disable();
if (ANOMALY_05000353 || ANOMALY_05000386)
bfin_reset();
if (smp_processor_id())
smp_call_function((void *)bfin_reset, 0, 1);
else
/* the bootrom checks to see how it was reset and will
* automatically perform a software reset for us when
* it starts executing boot
*/
asm("raise 1;");
bfin_reset();
}
__attribute__((weak))