//==========================================================================
//
//      twr_k70f120m_misc.c
//
//      Cortex-M4 TWR-K60N512 EVAL HAL functions
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 2012 Free Software Foundation, Inc.                        
//
// eCos is free software; you can redistribute it and/or modify it under    
// the terms of the GNU General Public License as published by the Free     
// Software Foundation; either version 2 or (at your option) any later      
// version.                                                                 
//
// eCos is distributed in the hope that it will be useful, but WITHOUT      
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
// for more details.                                                        
//
// You should have received a copy of the GNU General Public License        
// along with eCos; if not, write to the Free Software Foundation, Inc.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
// and link it with other works to produce a work based on this file,       
// this file does not by itself cause the resulting work to be covered by   
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// must still be made available in accordance with section (3) of the GNU   
// General Public License v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
// on this file might be covered by the GNU General Public License.         
// -------------------------------------------                              
// ####ECOSGPLCOPYRIGHTEND####                                              
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):      ilijak
// Contributor(s):
// Date:           2012-02-25
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================

#include <pkgconf/hal.h>
#include <pkgconf/hal_cortexm.h>
#include <pkgconf/hal_cortexm_kinetis.h>
#include <pkgconf/hal_cortexm_kinetis_twr_k70f120m.h>
#ifdef CYGPKG_KERNEL
#include <pkgconf/kernel.h>
#endif

#include <cyg/infra/diag.h>
#include <cyg/infra/cyg_type.h>
#include <cyg/infra/cyg_trac.h>         // tracing macros
#include <cyg/infra/cyg_ass.h>          // assertion macros

#include <cyg/hal/hal_arch.h>           // HAL header
#include <cyg/hal/hal_intr.h>           // HAL header

static inline void hal_gpio_init(void);

// DATA and BSS locations
__externC cyg_uint32 __ram_data_start;
__externC cyg_uint32 __ram_data_end;
__externC cyg_uint32 __rom_data_start;
__externC cyg_uint32 __sram_data_start;
__externC cyg_uint32 __sram_data_end;
__externC cyg_uint32 __srom_data_start;
__externC cyg_uint32 __bss_start;
__externC cyg_uint32 __bss_end;

#ifdef CYGHWR_HAL_DDR_SYNC_MODE
#define SYNC_ASYNC 0x3
#else
#define SYNC_ASYNC 0
#endif

#ifdef CYGPKG_HAL_CORTEXM_KINETIS_DDRMC

// DDRAM controller setup parameters
const cyg_uint32 kinetis_ddr_cfg[] = {
    0x00000400,  // DDR_CR00
    0x02000031,  // DDR_CR02
    0x02020506,  // DDR_CR03
    0x06090202,  // DDR_CR04
    0x02020302,  // DDR_CR05
    0x02904002,  // DDR_CR06
    0x01000303,  // DDR_CR07
    0x05030201,  // DDR_CR08
    0x020000c8,  // DDR_CR09
    0x03003207,  // DDR_CR10
    0x01000000,  // DDR_CR11
    0x04920031,  // DDR_CR12
    0x00000005,  // DDR_CR13
    0x00C80002,  // DDR_CR14
    0x00000032,  // DDR_CR15
    0x00000001,  // DDR_CR16
    0x00030300,  // DDR_CR20
    0x00040232,  // DDR_CR21
    0x00000000,  // DDR_CR22
    0x00040302,  // DDR_CR23
    0x0A010201,  // DDR_CR25
    0x0101FFFF,  // DDR_CR26
    0x01010101,  // DDR_CR27
    0x00000003,  // DDR_CR28
    0x00000000,  // DDR_CR29
    0x00000001,  // DDR_CR30
    0x02020101,  // DDR_CR34
    0x01010201,  // DDR_CR36
    0x00000200,  // DDR_CR37
    0x00200000,  // DDR_CR38
    0x01010020,  // DDR_CR39
    0x00002000 | SYNC_ASYNC,  // DDR_CR40
    0x01010020,  // DDR_CR41
    0x00002000 | SYNC_ASYNC,  // DDR_CR42
    0x01010020,  // DDR_CR43
    0x00000000 | SYNC_ASYNC,  // DDR_CR44
    0x03030303,  // DDR_CR45
    0x02006401,  // DDR_CR46
    0x01020202,  // DDR_CR47
    0x01010064,  // DDR_CR48
    0x00020101,  // DDR_CR49
    0x00000064,  // DDR_CR50
    0x02000602,  // DDR_CR52
    0x03c80000,  // DDR_CR53
    0x03c803c8,  // DDR_CR54
    0x03c803c8,  // DDR_CR55
    0x020303c8,  // DDR_CR56
    0x01010002   // DDR_CR57
};
#endif // CYGPKG_HAL_CORTEXM_KINETIS_DDRMC

//==========================================================================
// System init
//
// This is run to set up the basic system, including GPIO setting,
// clock feeds, power supply, and memory initialization. This code
// runs before the DATA is copied from ROM and the BSS cleared, hence
// it cannot make use of static variables or data tables.

__externC void CYGOPT_HAL_KINETIS_MISC_FLASH_SECTION_ATTR
hal_system_init( void )
{
//#if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_SRAM)
#if !defined(CYG_HAL_STARTUP_RAM)
    hal_wdog_disable();
    hal_gpio_init();
    hal_start_clocks();
# ifdef CYGPKG_HAL_CORTEXM_KINETIS_DDRMC
    HAL_CORTEXM_KINETIS_DDRMC_INIT( kinetis_ddr_cfg );
# endif // CYGPKG_HAL_CORTEXM_KINETIS_DDRMC
#endif
}

//===========================================================================
// hal_gpio_init
//===========================================================================
static inline void CYGOPT_HAL_KINETIS_MISC_FLASH_SECTION_ATTR
hal_gpio_init(void)
{
    cyghwr_hal_kinetis_sim_t *sim_p = CYGHWR_HAL_KINETIS_SIM_P;
    cyghwr_hal_kinetis_mpu_t *mpu_p = CYGHWR_HAL_KINETIS_MPU_P;
    cyghwr_hal_kinetis_pmc_t *pmc_p = CYGHWR_HAL_KINETIS_PMC_P;

    // Enable clocks on all ports.
    sim_p->scgc1 = CYGHWR_HAL_KINETIS_SIM_SCGC1_ALL_M;
    sim_p->scgc2 = CYGHWR_HAL_KINETIS_SIM_SCGC2_ALL_M;
    sim_p->scgc3 = CYGHWR_HAL_KINETIS_SIM_SCGC3_ALL_M;
    sim_p->scgc4 = CYGHWR_HAL_KINETIS_SIM_SCGC4_ALL_M;
    sim_p->scgc5 = CYGHWR_HAL_KINETIS_SIM_SCGC5_ALL_M | CYGHWR_HAL_KINETIS_SIM_SCGC5_PORTF_M;
    sim_p->scgc6 = CYGHWR_HAL_KINETIS_SIM_SCGC6_ALL_M | CYGHWR_HAL_KINETIS_SIM_SCGC6_DMAMUX1_M;
    sim_p->scgc7 = CYGHWR_HAL_KINETIS_SIM_SCGC7_ALL_M;

    // if ACKISO is set you must clear ackiso before calling pll_init
    //    or pll init hangs waiting for OSC to initialize
    if(pmc_p->regsc & CYGHWR_HAL_KINETIS_PMC_REGSC_ACKISO_M)
        pmc_p->regsc |= CYGHWR_HAL_KINETIS_PMC_REGSC_ACKISO_M;

    // Disable MPU
    mpu_p->cesr = 0;
}


//==========================================================================

__externC void hal_platform_init( void )
{
}

//==========================================================================

#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS

#include CYGHWR_MEMORY_LAYOUT_H

//--------------------------------------------------------------------------
// Accesses to areas not backed by real devices or memory can cause
// the CPU to hang.
//
// The following table defines the memory areas that GDB is allowed to
// touch. All others are disallowed.
// This table needs to be kept up to date with the set of memory areas
// that are available on the board.

static struct {
    CYG_ADDRESS         start;          // Region start address
    CYG_ADDRESS         end;            // End address (last byte)
} hal_data_access[] =
{
    { CYGMEM_REGION_ram,        CYGMEM_REGION_ram+CYGMEM_REGION_ram_SIZE-1        }, // System bus RAM partition
#ifdef CYGMEM_REGION_sram
    { CYGMEM_REGION_sram,       CYGMEM_REGION_sram+CYGMEM_REGION_sram_SIZE-1      }, // On-chip SRAM
#elif defined CYGMEM_REGION_sram_l
    { CYGMEM_REGION_sram_l,     CYGMEM_REGION_sram_l+CYGMEM_REGION_sram_l_SIZE-1  }, // On-chip SRAM lower bank
#endif
#ifdef CYGMEM_REGION_ramcod
    { CYGMEM_REGION_ramcod,      CYGMEM_REGION_ramcod+CYGMEM_REGION_ramcod_SIZE-1 }, // Code bus RAM partition
#endif
#ifdef CYGMEM_REGION_ramnc
    { CYGMEM_REGION_ramnc,      CYGMEM_REGION_ramnc+CYGMEM_REGION_ramnc_SIZE-1    }, // Non cachable RAM partition
#endif
#ifdef CYGMEM_REGION_flash
    { CYGMEM_REGION_flash,      CYGMEM_REGION_flash+CYGMEM_REGION_flash_SIZE-1    }, // On-chip flash
#endif
#ifdef CYGMEM_REGION_rom
    { CYGMEM_REGION_rom,        CYGMEM_REGION_rom+CYGMEM_REGION_rom_SIZE-1        }, // External flash [currently none]
#endif
    { 0xE0000000,               0x00000000-1                                      }, // Cortex-M peripherals
    { 0x40000000,               0x60000000-1                                      }  // Chip specific peripherals
};

__externC int cyg_hal_stub_permit_data_access( void* addr, cyg_uint32 count )
{
    int i;
    for( i = 0; i < sizeof(hal_data_access)/sizeof(hal_data_access[0]); i++ ) {
        if( ((CYG_ADDRESS)addr >= hal_data_access[i].start) &&
            ((CYG_ADDRESS)addr+count) <= hal_data_access[i].end)
            return true;
    }
    return false;
}

#endif // CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS

//==========================================================================

#ifdef CYGPKG_REDBOOT
#include <redboot.h>
#include CYGHWR_MEMORY_LAYOUT_H

//--------------------------------------------------------------------------
// Memory layout
//
// We report the on-chip SRAM and external SRAM.

void
cyg_plf_memory_segment(int seg, unsigned char **start, unsigned char **end)
{
    switch (seg) {
    case 0:
        *start = (unsigned char *)CYGMEM_REGION_ram;
        *end = (unsigned char *)(CYGMEM_REGION_ram + CYGMEM_REGION_ram_SIZE);
        break;
#ifdef CYGMEM_REGION_sram
    case 1:
        *start = (unsigned char *)CYGMEM_REGION_sram;
        *end = (unsigned char *)(CYGMEM_REGION_sram + CYGMEM_REGION_sram_SIZE);
        break;
#endif
#ifdef CYGMEM_REGION_sram_l
# define CASE_CODE 3
# define CASE_RAMNC 4
    case 2:
        *start = (unsigned char *)CYGMEM_REGION_sram_l;
        *end = (unsigned char *)(CYGMEM_REGION_sram_l + CYGMEM_REGION_sram_l_SIZE);
        break;
#else
# define CASE_CODE 2
# define CASE_RAMNC 3
#endif

#ifdef CYGMEM_REGION_ramcod
    case CASE_CODE:
        *start = (unsigned char *)CYGMEM_REGION_ramcod;
        *end = (unsigned char *)(CYGMEM_REGION_ramcod + CYGMEM_REGION_ramcod_SIZE);
        break;
#endif

#ifdef CYGMEM_REGION_ramnc
    case CASE_RAMNC:
        *start = (unsigned char *)CYGMEM_REGION_ramnc;
        *end = (unsigned char *)(CYGMEM_REGION_ramnc + CYGMEM_REGION_ramnc_SIZE);
        break;
#endif
    default:
        *start = *end = NO_MEMORY;
        break;
    }
} // cyg_plf_memory_segment()

#endif // CYGPKG_REDBOOT

//==========================================================================
// EOF twr_k70f120m_misc.c
