minerva: Make use of new minerva

- Training and switch is now faster
- Compatibility checks: New Minerva does not allow old binaries. New binaries do not allow old Minerva
- MTC table is now in a safe region
- Periodic training period increased to every 250ms

bootloader/mem/minerva.c

@@ -34,8 +34,10 @@ void minerva_init()
 
 	mtc_config_t *mtc_cfg = (mtc_config_t *)&nyx_str->mtc_cfg;
 
-	// Set table to ram.
-	mtc_cfg->mtc_table = NULL;
+	// Set table to nyx storage.
+	mtc_cfg->mtc_table = (emc_table_t *)&nyx_str->mtc_table;
+
+	mtc_cfg->init_done = MTC_NEW_MAGIC;
 	mtc_cfg->sdram_id = (fuse_read_odm(4) >> 3) & 0x1F;
 	u32 ep_addr = ianos_loader(false, "bootloader/sys/libsys_minerva.bso", DRAM_LIB, (void *)mtc_cfg);
 	minerva_cfg = (void *)ep_addr;
@@ -66,7 +68,7 @@ void minerva_change_freq(minerva_freq_t freq)
 		return;
 
 	mtc_config_t *mtc_cfg = (mtc_config_t *)&nyx_str->mtc_cfg;
-	if (minerva_cfg && (mtc_cfg->rate_from != freq))
+	if (mtc_cfg->rate_from != freq)
 	{
 		mtc_cfg->rate_to = freq;
 		mtc_cfg->train_mode = OP_SWITCH;
@@ -80,7 +82,7 @@ void minerva_periodic_training()
 		return;
 
 	mtc_config_t *mtc_cfg = (mtc_config_t *)&nyx_str->mtc_cfg;
-	if (minerva_cfg && mtc_cfg->rate_from == FREQ_1600)
+	if (mtc_cfg->rate_from == FREQ_1600)
 	{
 		mtc_cfg->train_mode = OP_PERIODIC_TRAIN;
 		minerva_cfg(mtc_cfg, NULL);

bootloader/mem/minerva.h

@@ -20,7 +20,10 @@
 #include "mtc_table.h"
 #include "../utils/types.h"
 
-#define EMC_PERIODIC_TRAIN_MS 100
+#define MTC_INIT_MAGIC 0x3043544D
+#define MTC_NEW_MAGIC  0x5243544D
+
+#define EMC_PERIODIC_TRAIN_MS 250
 
 typedef struct
 {
@@ -35,6 +38,7 @@ typedef struct
 	bool emc_2X_clk_src_is_pllmb;
 	bool fsp_for_src_freq;
 	bool train_ram_patterns;
+	bool init_done;
 } mtc_config_t;
 
 enum train_mode_t