static void plat_restore_el3_dormant_data()
{
struct _el3_dormant_data *p = &el3_dormant_data[0];
if (p->mp0_l2actlr_el1 == 0 && p->mp0_l2ectlr_el1==0)
panic();
write_l2actlr(p->mp0_l2actlr_el1);
write_l2ectlr(p->mp0_l2ectlr_el1);
//restore L2RSTDIRSABLE
mmio_write_32(MP0_CA7L_CACHE_CONFIG,
(mmio_read_32(MP0_CA7L_CACHE_CONFIG) & ~L2RSTDISABLE)
| (p->mp0_l2rstdisable & L2RSTDISABLE));
}
int workaround_826319(unsigned long mpidr)
{
unsigned long l2actlr;
/** only apply on 1st CPU of each cluster **/
if (mpidr & MPIDR_CPU_MASK)
return 0;
/** CONFIG_ARM_ERRATA_826319=y (for 6595/6752)
* Prog CatB Rare,
* System might deadlock if a write cannot complete until read data is accepted
* worksround: (L2ACTLR[14]=0, L2ACTLR[3]=1).
* L2ACTLR must be written before MMU on and any ACE, CHI or ACP traffic.
**/
l2actlr = read_l2actlr();
l2actlr = (l2actlr & ~(1<<14)) | (1<<3);
write_l2actlr(l2actlr);
return 0;
}
/*******************************************************************************
* MTK_platform handler called when an affinity instance has just been powered on after
* having been suspended earlier. The level and mpidr determine the affinity
* instance.
* TODO: At the moment we reuse the on finisher and reinitialize the secure
* context. Need to implement a separate suspend finisher.
******************************************************************************/
int mt_affinst_suspend_finish(unsigned long mpidr,
unsigned int afflvl,
unsigned int state)
{
int rc = PSCI_E_SUCCESS;
switch (afflvl) {
case MPIDR_AFFLVL2:
if (state == PSCI_STATE_OFF) {
struct _el3_dormant_data *p = &el3_dormant_data[0];
if (p->mp0_l2actlr_el1 == 0 && p->mp0_l2ectlr_el1==0)
panic();
write_l2actlr(p->mp0_l2actlr_el1);
write_l2ectlr(p->mp0_l2ectlr_el1);
//restore L2RSTDIRSABLE
mmio_write_32(MP0_CA7L_CACHE_CONFIG,
(mmio_read_32(MP0_CA7L_CACHE_CONFIG) & ~L2RSTDISABLE)
| (p->mp0_l2rstdisable & L2RSTDISABLE));
gic_setup();
gic_dist_restore();
}
break;
case MPIDR_AFFLVL1:
case MPIDR_AFFLVL0:
return mt_affinst_on_finish(mpidr, afflvl, state);
default:
assert(0);
}
return rc;
}
