118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2013-2014 Apple Inc. All rights reserved.
|
||
|
|
*
|
||
|
|
* This document is the property of Apple Inc.
|
||
|
|
* It is considered confidential and proprietary.
|
||
|
|
*
|
||
|
|
* This document may not be reproduced or transmitted in any form,
|
||
|
|
* in whole or in part, without the express written permission of
|
||
|
|
* Apple Inc.
|
||
|
|
*/
|
||
|
|
#include <debug.h>
|
||
|
|
#include <drivers/dcs/dcs.h>
|
||
|
|
#include <drivers/dcs/dcs_regs.h>
|
||
|
|
#include <drivers/dcs/dcs_init_lib.h>
|
||
|
|
#include <drivers/dram.h>
|
||
|
|
#include <drivers/miu.h>
|
||
|
|
#include <sys.h>
|
||
|
|
#include <platform/soc/hwclocks.h>
|
||
|
|
|
||
|
|
int mcu_initialize_dram (bool resume)
|
||
|
|
{
|
||
|
|
RELEASE_ASSERT(!resume);
|
||
|
|
|
||
|
|
// Don't perform DRAM initializion if the memory controller is already
|
||
|
|
// initialized (e.g., for SecureROM validation testing).
|
||
|
|
if (DCS_REG_READ_CH(0, rDCS_MCU_AMCCTRL) == 0) {
|
||
|
|
clock_gate(CLK_DCS0, true);
|
||
|
|
clock_gate(CLK_DCS1, true);
|
||
|
|
clock_gate(CLK_DCS2, true);
|
||
|
|
clock_gate(CLK_DCS3, true);
|
||
|
|
clock_gate(CLK_MCC, true);
|
||
|
|
|
||
|
|
dcs_init(DCS_BOOT_COLDBOOT);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void mcu_bypass_prep (int step)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
uint64_t mcu_get_memory_size (void)
|
||
|
|
{
|
||
|
|
return dcs_get_memory_size();
|
||
|
|
}
|
||
|
|
|
||
|
|
//================================================================================
|
||
|
|
void dcs_enable_slow_boot (bool enable)
|
||
|
|
{
|
||
|
|
if (enable) {
|
||
|
|
// switch to slow clock
|
||
|
|
clocks_set_performance(kPerformanceMemoryLow);
|
||
|
|
spin(1);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
#if !SUPPORT_FPGA
|
||
|
|
// switch back to full-speed
|
||
|
|
clocks_set_performance(kPerformanceMemoryFull);
|
||
|
|
spin(1);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//================================================================================
|
||
|
|
void dcs_dram_workarounds(dcs_boottype_t boot_type)
|
||
|
|
{
|
||
|
|
/* Nothing yet */
|
||
|
|
}
|
||
|
|
|
||
|
|
//================================================================================
|
||
|
|
// Grab (Platform Specific) Tables with Definitions of Values for DCS Init & DCS Tunables
|
||
|
|
#include <platform/dcsconfig.h>
|
||
|
|
|
||
|
|
#if DCS_FIXUP_PARAMS
|
||
|
|
// Grab (Target Specific) Definition of Required Fixups to the Values for DCS Init
|
||
|
|
#include <target/dcsfixup.h>
|
||
|
|
#endif
|
||
|
|
//================================================================================
|
||
|
|
void dcs_init_config_params(dcs_config_params_t *use_dcs_params, dcs_target_t targtype)
|
||
|
|
{
|
||
|
|
memcpy(use_dcs_params, &dcs_params, sizeof(dcs_config_params_t));
|
||
|
|
|
||
|
|
#if DCS_FIXUP_PARAMS
|
||
|
|
// This gives the particular target a chance to make target-specific changes
|
||
|
|
dcs_init_config_fixup_params(use_dcs_params, targtype);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
//================================================================================
|
||
|
|
const dcs_tunable_t *dcs_init_tunable_table(uint32_t *table_len)
|
||
|
|
{
|
||
|
|
if (table_len)
|
||
|
|
*table_len = sizeof(dcs_tunables) / sizeof(dcs_tunables[0]);
|
||
|
|
|
||
|
|
return dcs_tunables;
|
||
|
|
}
|
||
|
|
|
||
|
|
//================================================================================
|
||
|
|
// Save off calibration results to AOP_SRAM region (later to be stitched into reconfig sequence)
|
||
|
|
// Order of registers to be saved must match the order to be restored
|
||
|
|
volatile uint32_t *dcs_save_calibration_results(volatile uint32_t *save_region, uint32_t freq)
|
||
|
|
{
|
||
|
|
/* TBD */
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
//================================================================================
|
||
|
|
// Stitch the saved calibration results into the reconfig sequence
|
||
|
|
// To be called immediately after stitching mcu_aop_awake_reconfig_pre_restore
|
||
|
|
// Order of registers to be restored matches the order in the reconfig sequence
|
||
|
|
void dcs_restore_calibration_results(volatile uint32_t *save_region)
|
||
|
|
{
|
||
|
|
/* TBD */
|
||
|
|
}
|
||
|
|
|
||
|
|
//================================================================================
|