source: soft/giet_vm/display/main_cma.c @ 279

Last change on this file since 279 was 258, checked in by alain, 11 years ago

This is a major release, including a deep restructuration of code.
The main evolutions are

  • use of the Tsar preloader to load the GIET boot-loader from disk
  • introduction of a FAT32 file system library,
  • use of this fat32 library by the boot-loader to load the map.bin data structure, and the various .elf files
  • reorganisation of drivers (one file per peripheral).
  • introduction of drivers for new peripherals: vci_chbuf_dma and vci_multi_ahci.
  • introduction of a new physical memory allocator in the boot code.

This release has been tested on the tsar_generic_iob architecture,
for the two following mappings: 4c_1p_iob_four.xml and 4c_1p_iob_sort.xml
File size: 3.3 KB
RevLine 
[258]1#include <stdio.h>
2
3#define NBLOCKS 32
4
5unsigned char buf0[128*128] __attribute__((aligned(512)));
6unsigned char buf1[128*128] __attribute__((aligned(512)));
7
8__attribute__((constructor)) void main(void)
9{
10    unsigned int ko;
11    int          blocks;
12    int          fd;
13    unsigned int blocks_to_skip = 0;
14
15    giet_tty_printf("\nStarting task DISPLAY on processor %d at cycle %d\n",
16                    giet_procid(), giet_proctime() );
17
18    //////////////////////////////////////////
19    fd = giet_fat_open( "misc/images.raw", 0 );
20    if ( fd < 0 )
21    {
22        giet_tty_printf("\n*** echec giet_fat_open for misc/images.raw at cycle %d\n", 
23                        giet_proctime() );
24        giet_exit();
25    }
26    else
27    {
28        giet_tty_printf("\ngiet_fat_open completed for misc/images.raw at cycle %d\n", 
29                        giet_proctime() );
30    }
31
32    ////////////////////////////////////////////
33    ko = giet_fb_cma_init( buf0, buf1, 128*128 );
34    if ( ko )
35    {
36        giet_tty_printf("\n*** echec giet_cma_init at cycle %d\n", 
37                        giet_proctime() );
38        giet_exit();
39    }
40    else
41    {
42        giet_tty_printf("\ngiet_cma_init completed at cycle %d\n", 
43                        giet_proctime() );
44    }
45
46 
47    while ( blocks_to_skip < 10 * NBLOCKS )
48    {
49        ////////////////////////////////////////////////////////////
50        blocks = giet_fat_read( fd, buf0, NBLOCKS, blocks_to_skip );
51        if ( blocks != NBLOCKS )
52        {
53            giet_tty_printf("\nechec giet_fat_read to buf0 at cycle %d\n",
54                            giet_proctime() );
55            giet_exit();
56        }
57        else
58        {
59            giet_tty_printf("\ngiet_fat_read to buf0 completed at cycle = %d\n",
60                            giet_proctime() );
61        }
62
63        ///////////////////////////
64        ko = giet_fb_cma_write( 0 );
65        if ( ko )
66        {
67            giet_tty_printf("echec giet_cma_write for buf0 at cycle %d\n",
68                            giet_proctime() );
69            giet_exit();
70        }
71        else
72        {
73            giet_tty_printf("giet_cma_write for buf0 completed at cycle = %d\n",
74                            giet_proctime() );
75        }
76
77        blocks_to_skip = blocks_to_skip + NBLOCKS;
78
79        ///////////////////////////////////////////////////////
80        blocks = giet_fat_read( fd, buf1, NBLOCKS, blocks_to_skip );
81        if ( blocks != NBLOCKS )
82        {
83            giet_tty_printf("echec giet_fat_read to buf1 at cycle %d\n",
84                            giet_proctime() );
85            giet_exit();
86        }
87        else
88        {
89            giet_tty_printf("giet_fat_read to buf1 completed at cycle = %d\n",
90                            giet_proctime() );
91        }
92
93        ////////////////////////////
94        ko = giet_fb_cma_write( 1 );
95        if ( ko )
96        {
97            giet_tty_printf("echec giet_cma_write for buf1 at cycle %d\n",
98                            giet_proctime() );
99            giet_exit();
100        }
101        else
102        {
103            giet_tty_printf("giet_cma_write for buf1 completed at cycle = %d\n",
104                            giet_proctime() );
105        }
106        blocks_to_skip = blocks_to_skip + NBLOCKS;
107    }
108
109    ///////////////////
110    giet_fb_cma_stop();
111
112    giet_tty_printf("\n*** Task display exit at cycle %d ***\n", giet_proctime());
113
114    giet_exit();
115}
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