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minerva: Scale down RAM OC if stock boot

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CTCaer 2021-04-09 19:28:04 +03:00
parent c01b8aa89c
commit d42a94f148
3 changed files with 27 additions and 5 deletions
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27
bdk/mem/minerva.c
View file

@ -104,21 +104,21 @@ u32 minerva_init()
}
mtc_cfg->rate_from = mtc_cfg->mtc_table[curr_ram_idx].rate_khz;
mtc_cfg->rate_to = 204000;
mtc_cfg->rate_to = FREQ_204;
mtc_cfg->train_mode = OP_TRAIN;
minerva_cfg(mtc_cfg, NULL);
mtc_cfg->rate_to = 800000;
mtc_cfg->rate_to = FREQ_800;
minerva_cfg(mtc_cfg, NULL);
mtc_cfg->rate_to = 1600000;
mtc_cfg->rate_to = FREQ_1600;
minerva_cfg(mtc_cfg, NULL);
// FSP WAR.
mtc_cfg->train_mode = OP_SWITCH;
mtc_cfg->rate_to = 800000;
mtc_cfg->rate_to = FREQ_800;
minerva_cfg(mtc_cfg, NULL);
// Switch to max.
mtc_cfg->rate_to = 1600000;
mtc_cfg->rate_to = FREQ_1600;
minerva_cfg(mtc_cfg, NULL);
return 0;
@ -139,6 +139,23 @@ void minerva_change_freq(minerva_freq_t freq)
}
}
void minerva_prep_boot_freq()
{
if (!minerva_cfg)
return;
mtc_config_t *mtc_cfg = (mtc_config_t *)&nyx_str->mtc_cfg;
// Check if there's RAM OC. If not exit.
if (mtc_cfg->mtc_table[mtc_cfg->table_entries - 1].rate_khz == FREQ_1600)
return;
// FSP WAR.
minerva_change_freq(FREQ_204);
// Scale down to 800 MHz boot freq.
minerva_change_freq(FREQ_800);
}
void minerva_periodic_training()
{
if (!minerva_cfg)

1
bdk/mem/minerva.h
View file

@ -60,6 +60,7 @@ typedef enum
extern void (*minerva_cfg)(mtc_config_t *mtc_cfg, void *);
u32 minerva_init();
void minerva_change_freq(minerva_freq_t freq);
void minerva_prep_boot_freq();
void minerva_periodic_training();
#endif

4
bootloader/hos/hos.c
View file

@ -1140,6 +1140,10 @@ int hos_launch(ini_sec_t *cfg)
bpmp_mmu_disable();
bpmp_clk_rate_set(BPMP_CLK_NORMAL);
// Scale down RAM OC if enabled.
if (ctxt.stock)
minerva_prep_boot_freq();
// emuMMC: Some cards (Sandisk U1), do not like a fast power cycle. Wait min 100ms.
sdmmc_storage_init_wait_sd();