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MIPS: Netlogic: Core wakeup improvements 

Move wakeup to after early console. This will allow us to display error
messages when cores are not woken up.  Also reduce the wait time for core
to come up.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6303/
hifive-unleashed-5.1
Jayachandran C 2014-01-14 12:39:15 +01:00 committed by Ralf Baechle
parent 194d315da8
commit e92e1d0d78
2 changed files with 13 additions and 9 deletions
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14
arch/mips/netlogic/xlp/setup.c
View File

@ -96,6 +96,14 @@ static void __init xlp_init_mem_from_bars(void)
void __init plat_mem_setup(void)
{
#ifdef CONFIG_SMP
nlm_wakeup_secondary_cpus();
/* update TLB size after waking up threads */
current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
register_smp_ops(&nlm_smp_ops);
#endif
panic_timeout = 5;
_machine_restart = (void (*)(char *))nlm_linux_exit;
_machine_halt = nlm_linux_exit;
@ -172,11 +180,5 @@ void __init prom_init(void)
#ifdef CONFIG_SMP
cpumask_setall(&nlm_cpumask);
nlm_wakeup_secondary_cpus();
/* update TLB size after waking up threads */
current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
register_smp_ops(&nlm_smp_ops);
#endif
}

8
arch/mips/netlogic/xlp/wakeup.c
View File

@ -96,7 +96,7 @@ static int wait_for_cpus(int cpu, int bootcpu)
volatile uint32_t *cpu_ready = nlm_get_boot_data(BOOT_CPU_READY);
int i, count, notready;
count = 0x20000000;
count = 0x800000;
do {
notready = nlm_threads_per_core;
for (i = 0; i < nlm_threads_per_core; i++)
@ -188,7 +188,8 @@ static void xlp_enable_secondary_cores(const cpumask_t *wakeup_mask)
nodep->coremask |= 1u << core;
/* spin until the hw threads sets their ready */
wait_for_cpus(cpu, 0);
if (!wait_for_cpus(cpu, 0))
pr_err("Node %d : timeout core %d\n", n, core);
}
}
}
@ -200,7 +201,8 @@ void xlp_wakeup_secondary_cpus()
* first wakeup core 0 threads
*/
xlp_boot_core0_siblings();
wait_for_cpus(0, 0);
if (!wait_for_cpus(0, 0))
pr_err("Node 0 : timeout core 0\n");
/* now get other cores out of reset */
xlp_enable_secondary_cores(&nlm_cpumask);