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

nyx/nyx_gui/mem/minerva.c

@@ -34,23 +34,32 @@ void minerva_init()
 
 	mtc_config_t *mtc_cfg = (mtc_config_t *)&nyx_str->mtc_cfg;
 
+	// Set table to nyx storage.
+	mtc_cfg->mtc_table = (emc_table_t *)&nyx_str->mtc_table;
+
 	// Set table to ram.
-	if (!(mtc_cfg->table_entries == 10))
+	if (mtc_cfg->init_done == MTC_INIT_MAGIC)
 	{
-		mtc_cfg->mtc_table = NULL;
-		mtc_cfg->sdram_id = (fuse_read_odm(4) >> 3) & 0x1F;
+		mtc_cfg->train_mode = OP_PERIODIC_TRAIN; // Retrain if needed.
 		u32 ep_addr = ianos_loader(false, "bootloader/sys/libsys_minerva.bso", DRAM_LIB, (void *)mtc_cfg);
 		minerva_cfg = (void *)ep_addr;
+
+		return;
 	}
 	else
 	{
 		mtc_config_t mtc_tmp;
-		mtc_tmp.mtc_table = NULL;
+		mtc_tmp.mtc_table = mtc_cfg->mtc_table;
 		mtc_tmp.sdram_id = (fuse_read_odm(4) >> 3) & 0x1F;
+		mtc_tmp.init_done = MTC_NEW_MAGIC;
 		u32 ep_addr = ianos_loader(false, "bootloader/sys/libsys_minerva.bso", DRAM_LIB, (void *)&mtc_tmp);
-		minerva_cfg = (void *)ep_addr;
-		
-		return;
+
+		if (mtc_tmp.init_done == MTC_INIT_MAGIC)
+			minerva_cfg = (void *)ep_addr;
+
+		// Copy Minerva context to Nyx storage.
+		if (minerva_cfg)
+			memcpy(mtc_cfg, (void *)&mtc_tmp, sizeof(mtc_config_t));
 	}
 
 	if (!minerva_cfg)
@@ -79,7 +88,7 @@ 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;

nyx/nyx_gui/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

nyx/nyx_gui/utils/util.c

@@ -17,6 +17,7 @@
 
 #include "util.h"
 #include "../gfx/di.h"
+#include "../mem/minerva.h"
 #include "../power/max77620.h"
 #include "../soc/bpmp.h"
 #include "../soc/i2c.h"
@@ -25,6 +26,8 @@
 
 #define USE_RTC_TIMER
 
+extern volatile nyx_storage_t *nyx_str;
+
 extern void sd_unmount(bool deinit);
 
 u32 get_tmr_s()
@@ -99,6 +102,8 @@ void reboot_normal()
 	sd_unmount(true);
 	display_end();
 
+	nyx_str->mtc_cfg.init_done = 0;
+
 	panic(0x21); // Bypass fuse programming in package1.
 }
 
@@ -109,6 +114,8 @@ void reboot_rcm()
 	sd_unmount(true);
 	display_end();
 
+	nyx_str->mtc_cfg.init_done = 0;
+
 	PMC(APBDEV_PMC_SCRATCH0) = 2; // Reboot into rcm.
 	PMC(APBDEV_PMC_CNTRL) |= PMC_CNTRL_MAIN_RST;
 
@@ -121,8 +128,11 @@ void power_off()
 	sd_unmount(true);
 	display_end();
 
+	// Stop the alarm, in case we injected and powered off too fast.
+	max77620_rtc_stop_alarm();
+
 	i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_ONOFFCNFG1, MAX77620_ONOFFCNFG1_PWR_OFF);
-	
+
 	while (true)
 		bpmp_halt();
 }

nyx/nyx_gui/utils/util.h

@@ -41,6 +41,7 @@ typedef struct _nyx_storage_t
 	u8  hekate[0x30000];
 	u8  rsvd[0x800000];
 	mtc_config_t mtc_cfg;
+	emc_table_t mtc_table;
 } nyx_storage_t;
 
 u32 get_tmr_us();