ecosflash/notes.txt

   1 Some of these binaries are build & linked using eCos.
   2
   3 For source for the flash drivers, see:
   4
   5 http://ecos.sourceware.org/
   6
   7
   8 1. GDB startup script for debugging purposes.
   9
  10 # startup script for debugging flash erase
  11 target remote 10.0.0.56:2001
  12 monitor halt
  13 monitor reset
  14 load
  15 # stack
  16 monitor rm 13 0x7000
  17 # pc
  18 monitor rm 15 0x8000
  19 # arg1 to erase()
  20 monitor rm 0 0x1030000
  21 # arg2 to erase()
  22 monitor rm 1 0x10000
  23 stepi
  24
  25
  26
  27 2. Uploading flash driver via tftp
  28
  29
  30 $ tftp 10.0.0.108
  31 tftp> binary
  32 tftp> put at91fr40162.bin 10.0.0.108:/config/flashdriver.bin
  33 Sent 4048 bytes in 0.1 seconds
  34 tftp>
  35
  36
  37 4. Programming flash
  38
  39 eCosBoard_prog 0x1000000 /config/testdata.bin
  40
  41
  42 tftp> put /cygdrive/c/workspace/ecosboard/ecosboard/phi/bootloader/images/bootloader.bin 10.0.0.108:/config/test.bin
  43 Sent 165724 bytes in 3.9 seconds
  44
  45
  46 halt
  47 reg cpsr 0x000000D3
  48 mww 0xFFE00020 0x1
  49 mww 0xFFE00024 0x00000000
  50 mww 0xFFE00000 0x01002539
  51 eCosBoard_profile
  52 eCosBoard_prog /config/test.bin 0x1000000
  53 eCosBoard_profile_done
  54
  55
  56
  57
  58 set remote memory-write-packet-size fixed
  59
  60
  61 set remote memory-write-packet-size 8192
  62 set remote memory-map-packet on
  63 target remote 10.0.0.108:3333
  64 monitor halt
  65 monitor reg cpsr 0x000000D3
  66 monitor mww 0xFFE00020 0x1
  67 monitor mww 0xFFE00024 0x00000000
  68 monitor mww 0xFFE00000 0x01002539
  69
  70
  71 monitor eCosBoard_profile
  72 load
  73 monitor eCosBoard_profile_done
  74
  75
  76 source /tmp/ecosboard/packages/services/profile/gprof/current/host/gprof.gdb
  77 gprof_dump
  78 shell cp gmon.out /tmp/ecosboard/build/src
  79 echo To view: cd /tmp/ecosboard/build/src && gprof openocd
  80
  81
  82 Performance problems:
  83
  84 It seems the problem is that the actual flash programming takes time.
  85 hal_delay_us() is invoked between each time the
  86 CPU is polled for whether flash programming has completed.
  87
  88
  89 Flat profile:
  90
  91 Each sample counts as 0.01 seconds.
  92   %   cumulative   self              self     total
  93  time   seconds   seconds    calls  Ts/call  Ts/call  name
  94  35.82     37.66    37.66                             hal_delay_us
  95  11.90     50.17    12.51                             arm7tdmi_clock_out
  96   9.86     60.54    10.37                             gdb_get_packet
  97   5.36     66.17     5.63                             memcpy
  98   4.34     70.73     4.56                             target_buffer_get_u32
  99   3.34     74.25     3.51                             embeddedice_read_reg_w_che
 100 ck
 101   1.39     75.71     1.46                             arm7_9_write_memory
 102   1.34     77.11     1.40                             cyg_tcp_output
 103   1.33     78.51     1.40                             __udivsi3
 104   1.11     79.68     1.17                             cyg_tcp_input
 105   1.07     80.80     1.13                             arm7tdmi_store_word_regs
 106   0.95     81.81     1.00                             __udivdi3
 107   0.95     82.80     1.00                             __umodsi3
 108   0.93     83.78     0.98                             arm7tdmi_write_core_regs
 109   0.86     84.68     0.91                             arm7_9_poll
 110   0.85     85.57     0.89                             memset
 111   0.77     86.38     0.81                             cyg_splx
 112   0.64     87.05     0.67                             cyg_in_cksumdata
 113   0.63     87.71     0.66                             openeth_deliver
 114   0.57     88.31     0.60                             strstr
 115   0.51     88.85     0.53                             eth_drv_recv
 116   0.49     89.36     0.52                             cyg_splinternal
 117   0.49     89.88     0.52                             cyg_splimp
 118   0.46     90.36     0.48                             cyg_ip_input