Ignore:
Timestamp:
Jul 24, 2014, 3:19:18 PM (10 years ago)
Author:
cfuguet
Message:

tsar_boot: improving configuration infrastructure

  • Using hard_config.h which respects the same sintax that the hard_config.h file of all TSAR platforms. This file can be then generated by the GIET-VM genmap tool or written manually.
  • All peripheral drivers have been moved to a drivers directory and they are compiled as a static library. This allows GCC to only include in the final .ELF the object files of used peripherals and not all of them.
  • Example hard_config.h and ldscripts have been introduced in the conf directory.
  • Improving comments in all files
File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/softs/tsar_boot/src/reset_ioc.c

    r654 r758  
     1/**
     2 * \file   reset_ioc.c
     3 * \date   December 2013
     4 * \author Cesar Fuguet
     5 *
     6 * \brief  API for accessing the disk controller
     7 *
     8 * \note   These functions call the specific disk controller driver depending
     9 *         on the USE_IOC_BDV, USE_IOC_SPI or USE_RAMDISK constants
     10 */
     11
    112#include <reset_ioc.h>
     13#include <defs.h>
    214
    3 #if USE_SPI
    4 static struct sdcard_dev     _sdcard_device;
    5 static struct spi_dev *const _spi_device = (struct spi_dev*) IOC_PADDR_BASE;
     15#if !defined(USE_IOC_BDV) && !defined(USE_IOC_SPI) && !defined(USE_RAMDISK)
     16#   error "One of the USE_IOC_* constants must be defined in the hard_config.h"
    617#endif
    718
    8 #define SDCARD_RESET_ITER_MAX   4
     19#if (USE_IOC_BDV + USE_IOC_SPI + USE_RAMDISK) != 1
     20#   error "Only one disk controller must be used"
     21#endif
    922
    10 ///////////////////////////////////
    11 inline void reset_sleep(int cycles)
     23#if USE_IOC_SPI
     24#include <reset_sdc.h>
     25#endif
     26
     27#if USE_IOC_BDV
     28#include <reset_bdv.h>
     29#endif
     30
     31#if USE_RAMDISK
     32#include <reset_rdk.h>
     33#endif
     34
     35/**
     36 * \brief Initialize the disk controller
     37 */
     38int reset_ioc_init()
    1239{
    13     int i;
    14     for (i = 0; i < cycles; i++);
     40#if USE_IOC_BDV
     41    return reset_bdv_init();
     42#elif USE_IOC_SPI
     43    return reset_sdc_init();
     44#elif USE_RAMDISK
     45    return reset_rdk_init();
     46#else
     47#   error "reset_ioc_init() : Not supported disk controller chosen"
     48#endif
    1549}
    1650
    17 #if USE_SPI
    18 ///////////////////////////////////////////////////////////////////////////////
    19 //     reset_ioc_init
    20 // This function initializes the SDCARD / required for FPGA.
    21 ///////////////////////////////////////////////////////////////////////////////
    22 int reset_ioc_init()
     51/**
     52 * \param lba   : first block index on the disk
     53 * \param buffer: base address of the memory buffer
     54 * \param count : number of blocks to be transfered
     55 *
     56 * \brief Transfer data from disk to a memory buffer
     57 *
     58 * \note  This is a blocking function. The function returns once the transfer
     59 *        is completed.
     60 */
     61int reset_ioc_read( unsigned int lba, void* buffer, unsigned int count )
    2362{
    24     unsigned char sdcard_rsp;
    25 
    26     reset_puts("Initializing block device\n\r");
    27 
    28     /**
    29      * Initializing the SPI controller
    30      */
    31     spi_dev_config (
    32       _spi_device   ,
    33       200000        , /**< SPI_clk: 200 Khz */
    34       SYSCLK_FREQ   , /**< Sys_clk          */
    35       8             , /**< Charlen: 8       */
    36       SPI_TX_NEGEDGE,
    37       SPI_RX_POSEDGE
    38     );
    39 
    40     /**
    41      * Initializing the SD Card
    42      */
    43     unsigned int iter = 0;
    44     while(1)
    45     {
    46         reset_puts("Trying to initialize SD card... ");
    47 
    48         sdcard_rsp = sdcard_dev_open(&_sdcard_device, _spi_device, 0);
    49         if (sdcard_rsp == 0)
    50         {
    51             reset_puts("OK\n");
    52             break;
    53         }
    54 
    55         reset_puts("KO\n");
    56         reset_sleep(1000);
    57         if (++iter >= SDCARD_RESET_ITER_MAX)
    58         {
    59             reset_puts("\nERROR: During SD card reset to IDLE state\n"
    60                       "/ card response = ");
    61             reset_putx(sdcard_rsp);
    62             reset_puts("\n");
    63             reset_exit();
    64         }
    65     }
    66 
    67     /**
    68      * Set the block length of the SD Card
    69      */
    70     sdcard_rsp = sdcard_dev_set_blocklen(&_sdcard_device, 512);
    71     if (sdcard_rsp)
    72     {
    73         reset_puts("ERROR: During SD card blocklen initialization\n");
    74         reset_exit();
    75     }
    76 
    77     /**
    78      * Incrementing SDCARD clock frequency for normal function
    79      */
    80     spi_dev_config (
    81         _spi_device ,
    82         10000000    , /**< SPI_clk 10 Mhz */
    83         SYSCLK_FREQ , /**< Sys_clk        */
    84         -1          , /**< Charlen: 8     */
    85         -1          ,
    86         -1
    87     );
    88 
    89     reset_puts("Finish block device initialization\n\r");
    90 
    91     return 0;
    92 } // end reset_ioc_init()
    93 #endif
    94 
    95 //////////////////////////////////////////////////////////////////////////////
    96 // reset_bdv_read()
    97 /////////////////////////////////////////////////////////////////////////////
    98 #if USE_BDV
    99 int reset_bdv_read( unsigned int lba,
    100                     void*        buffer,
    101                     unsigned int count )
    102 {
    103     unsigned int * ioc_address = (unsigned int*)IOC_PADDR_BASE;
    104 
    105     // block_device configuration
    106     iowrite32( &ioc_address[BLOCK_DEVICE_BUFFER], (unsigned int) buffer );
    107     iowrite32( &ioc_address[BLOCK_DEVICE_COUNT], count );
    108     iowrite32( &ioc_address[BLOCK_DEVICE_LBA], lba );
    109     iowrite32( &ioc_address[BLOCK_DEVICE_IRQ_ENABLE], 0 );
    110 
    111     // block_device trigger transfer
    112     iowrite32( &ioc_address[BLOCK_DEVICE_OP], ( unsigned int )
    113                BLOCK_DEVICE_READ );
    114 
    115     unsigned int status = 0;
    116     while ( 1 )
    117     {
    118         status = ioread32(&ioc_address[BLOCK_DEVICE_STATUS]);
    119         if ( status == BLOCK_DEVICE_READ_SUCCESS )
    120         {
    121             break;
    122         }
    123         if ( status == BLOCK_DEVICE_READ_ERROR   ) {
    124             reset_puts("ERROR during read on the BLK device\n");
    125             return 1;
    126         }
    127     }
    128 #if (CACHE_COHERENCE == 0) || USE_IOB
    129     reset_buf_invalidate(buffer, CACHE_LINE_SIZE, count * 512);
    130 #endif
    131     return 0;
    132 }
    133 #endif
    134 
    135 //////////////////////////////////////////////////////////////////////////////
    136 // reset_spi_read()
    137 /////////////////////////////////////////////////////////////////////////////
    138 #if USE_SPI
    139 static int reset_spi_read( unsigned int lba,
    140                            void*        buffer,
    141                            unsigned int count )
    142 {
    143     unsigned int sdcard_rsp;
    144     unsigned int i;
    145 
    146     sdcard_dev_lseek(&_sdcard_device, lba);
    147     for(i = 0; i < count; i++)
    148     {
    149         unsigned char* buf = (unsigned char *) buffer + (512 * i);
    150         if (( sdcard_rsp = sdcard_dev_read ( &_sdcard_device, buf, 512 ) ))
    151         {
    152             reset_puts("ERROR during read on the SDCARD device. Code: ");
    153             reset_putx(sdcard_rsp);
    154             reset_puts("\n");
    155             return 1;
    156         }
    157     }
    158     return 0;
    159 }
    160 #endif
    161 
    162 //////////////////////////////////////////////////////////////////////////////
    163 // reset_rdk_read()
    164 /////////////////////////////////////////////////////////////////////////////
    165 #if USE_RDK
    166 static int reset_rdk_read( unsigned int lba,
    167                            void*        buffer,
    168                            unsigned int count )
    169 {
    170     unsigned int* rdk_address = (unsigned int*) RDK_PADDR_BASE;
    171     char* src = (char*) rdk_address + (lba * 512);
    172 
    173     memcpy(buffer, (void*) src, count * 512);
    174     return 0;
    175 }
    176 #endif
    177 
    178 ///////////////////////////////////////////////////////////////////////////////
    179 //      reset_ioc_read()
    180 // Transfer data from disk to a memory buffer
    181 // - param lba    : first block index on the disk
    182 // - param buffer : base address of the memory buffer
    183 // - param count  : number of blocks to be transfered
    184 // This is a blocking function. The function returns once the transfer is
    185 // completed.
    186 //
    187 // The USE_BDV, USE_SPI and USE_RDK variables signal if the disk is accessed
    188 // through a BLOCK DEVICE, SPI or RAMDISK respectively
    189 ///////////////////////////////////////////////////////////////////////////////
    190 int reset_ioc_read( unsigned int lba,
    191                     void*        buffer,
    192                     unsigned int count )
    193 {
    194 #if USE_BDV
     63#if USE_IOC_BDV
    19564    return reset_bdv_read(lba, buffer, count);
    196 #elif USE_SPI
    197     return reset_spi_read(lba, buffer, count);
    198 #elif USE_RDK
     65#elif USE_IOC_SPI
     66    return reset_sdc_read(lba, buffer, count);
     67#elif USE_RAMDISK
    19968    return reset_rdk_read(lba, buffer, count);
    20069#else
    201 #   error "reset_ioc_read() : No supported disk controller chosen"
     70#   error "reset_ioc_read() : Not supported disk controller chosen"
    20271#endif
    20372}
    20473
    20574/*
    206  * vim: tabstop=4 : shiftwidth=4 : expandtab
     75 * vim: tabstop=4 : softtabstop=4 : shiftwidth=4 : expandtab
    20776 */
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