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Code Issues Releases Activity

bdk: minerva: prep for ATF direct boot support

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CTCaer 2022-01-20 12:43:24 +02:00
parent e071fe44b0
commit 7ae4fd03c2
3 changed files with 52 additions and 4 deletions
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49
bdk/mem/minerva.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2019 CTCaer
* Copyright (c) 2019-2022 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@ -97,9 +97,10 @@ u32 minerva_init()
return 1;
// Get current frequency
u32 current_emc_clk_src = CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_EMC);
for (curr_ram_idx = 0; curr_ram_idx < 10; curr_ram_idx++)
{
if (CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_EMC) == mtc_cfg->mtc_table[curr_ram_idx].clk_src_emc)
if (current_emc_clk_src == mtc_cfg->mtc_table[curr_ram_idx].clk_src_emc)
break;
}
@ -156,6 +157,39 @@ void minerva_prep_boot_freq()
minerva_change_freq(FREQ_800);
}
void minerva_prep_boot_l4t()
{
if (!minerva_cfg)
return;
mtc_config_t *mtc_cfg = (mtc_config_t *)&nyx_str->mtc_cfg;
// Set init frequency.
minerva_change_freq(FREQ_204);
// Train the rest of the frequencies.
mtc_cfg->train_mode = OP_TRAIN;
for (u32 i = 0; i < mtc_cfg->table_entries; i++)
{
mtc_cfg->rate_to = mtc_cfg->mtc_table[i].rate_khz;
// Skip already trained frequencies.
if (mtc_cfg->rate_to == FREQ_204 || mtc_cfg->rate_to == FREQ_800 || mtc_cfg->rate_to == FREQ_1600)
continue;
// Train frequency.
minerva_cfg(mtc_cfg, NULL);
}
// Do FSP WAR and scale to 800 MHz as boot freq.
bool fsp_opwr_enabled = !!(EMC(EMC_MRW3) & 0xC0);
if (fsp_opwr_enabled)
minerva_change_freq(FREQ_666);
minerva_change_freq(FREQ_800);
// Do not let other mtc ops.
mtc_cfg->init_done = 0;
}
void minerva_periodic_training()
{
if (!minerva_cfg)
@ -167,4 +201,13 @@ void minerva_periodic_training()
mtc_cfg->train_mode = OP_PERIODIC_TRAIN;
minerva_cfg(mtc_cfg, NULL);
}
}
}
emc_table_t *minerva_get_mtc_table()
{
if (!minerva_cfg)
return NULL;
mtc_config_t *mtc_cfg = (mtc_config_t *)&nyx_str->mtc_cfg;
return mtc_cfg->mtc_table;
}

5
bdk/mem/minerva.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2019 CTCaer
* Copyright (c) 2019-2022 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@ -53,6 +53,7 @@ enum train_mode_t
typedef enum
{
FREQ_204 = 204000,
FREQ_666 = 665600,
FREQ_800 = 800000,
FREQ_1600 = 1600000
} minerva_freq_t;
@ -61,6 +62,8 @@ 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_prep_boot_l4t();
void minerva_periodic_training();
emc_table_t *minerva_get_mtc_table();
#endif

2
bdk/utils/sprintf.h
View file

@ -17,6 +17,8 @@
#ifndef _SPRINTF_H_
#define _SPRINTF_H_
#include <stdarg.h>
#include <utils/types.h>
void s_printf(char *out_buf, const char *fmt, ...);