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Last change
on this file since 758 was
758,
checked in by cfuguet, 10 years ago
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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
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File size:
1.7 KB
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| 1 | /** |
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| 2 | * \file reset_ioc.c |
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| 3 | * \date December 2013 |
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| 4 | * \author Cesar Fuguet |
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| 5 | * |
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| 6 | * \brief API for accessing the disk controller |
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| 7 | * |
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| 8 | * \note These functions call the specific disk controller driver depending |
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| 9 | * on the USE_IOC_BDV, USE_IOC_SPI or USE_RAMDISK constants |
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| 10 | */ |
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| 11 | |
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| 12 | #include <reset_ioc.h> |
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| 13 | #include <defs.h> |
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| 14 | |
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| 15 | #if !defined(USE_IOC_BDV) && !defined(USE_IOC_SPI) && !defined(USE_RAMDISK) |
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| 16 | # error "One of the USE_IOC_* constants must be defined in the hard_config.h" |
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| 17 | #endif |
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| 18 | |
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| 19 | #if (USE_IOC_BDV + USE_IOC_SPI + USE_RAMDISK) != 1 |
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| 20 | # error "Only one disk controller must be used" |
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| 21 | #endif |
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| 22 | |
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| 23 | #if USE_IOC_SPI |
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| 24 | #include <reset_sdc.h> |
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| 25 | #endif |
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| 26 | |
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| 27 | #if USE_IOC_BDV |
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| 28 | #include <reset_bdv.h> |
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| 29 | #endif |
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| 30 | |
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| 31 | #if USE_RAMDISK |
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| 32 | #include <reset_rdk.h> |
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| 33 | #endif |
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| 34 | |
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| 35 | /** |
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| 36 | * \brief Initialize the disk controller |
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| 37 | */ |
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| 38 | int reset_ioc_init() |
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| 39 | { |
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| 40 | #if USE_IOC_BDV |
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| 41 | return reset_bdv_init(); |
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| 42 | #elif USE_IOC_SPI |
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| 43 | return reset_sdc_init(); |
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| 44 | #elif USE_RAMDISK |
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| 45 | return reset_rdk_init(); |
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| 46 | #else |
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| 47 | # error "reset_ioc_init() : Not supported disk controller chosen" |
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| 48 | #endif |
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| 49 | } |
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| 50 | |
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| 51 | /** |
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| 52 | * \param lba : first block index on the disk |
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| 53 | * \param buffer: base address of the memory buffer |
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| 54 | * \param count : number of blocks to be transfered |
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| 55 | * |
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| 56 | * \brief Transfer data from disk to a memory buffer |
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| 57 | * |
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| 58 | * \note This is a blocking function. The function returns once the transfer |
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| 59 | * is completed. |
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| 60 | */ |
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| 61 | int reset_ioc_read( unsigned int lba, void* buffer, unsigned int count ) |
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| 62 | { |
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| 63 | #if USE_IOC_BDV |
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| 64 | return reset_bdv_read(lba, buffer, count); |
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| 65 | #elif USE_IOC_SPI |
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| 66 | return reset_sdc_read(lba, buffer, count); |
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| 67 | #elif USE_RAMDISK |
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| 68 | return reset_rdk_read(lba, buffer, count); |
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| 69 | #else |
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| 70 | # error "reset_ioc_read() : Not supported disk controller chosen" |
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| 71 | #endif |
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| 72 | } |
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| 73 | |
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| 74 | /* |
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| 75 | * vim: tabstop=4 : softtabstop=4 : shiftwidth=4 : expandtab |
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| 76 | */ |
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