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1. GDB startup script for debugging purposes.
# startup script for debugging flash erase
target remote 10.0.0.56:2001
monitor halt
monitor reset
load
# stack
monitor rm 13 0x7000
# pc
monitor rm 15 0x8000
# arg1 to erase()
monitor rm 0 0x1030000
# arg2 to erase()
monitor rm 1 0x10000
stepi
2. Uploading flash driver via tftp
$ tftp 10.0.0.108
tftp> binary
tftp> put at91fr40162.bin 10.0.0.108:/config/flashdriver.bin
Sent 4048 bytes in 0.1 seconds
tftp>
4. Programming flash
eCosBoard_prog 0x1000000 /config/testdata.bin
tftp> put /cygdrive/c/workspace/ecosboard/ecosboard/phi/bootloader/images/bootloader.bin 10.0.0.108:/config/test.bin
Sent 165724 bytes in 3.9 seconds
halt
reg cpsr 0x000000D3
mww 0xFFE00020 0x1
mww 0xFFE00024 0x00000000
mww 0xFFE00000 0x01002539
eCosBoard_profile
eCosBoard_prog /config/test.bin 0x1000000
eCosBoard_profile_done
set remote memory-write-packet-size fixed
set remote memory-write-packet-size 8192
set remote memory-map-packet on
target remote 10.0.0.108:3333
monitor halt
monitor reg cpsr 0x000000D3
monitor mww 0xFFE00020 0x1
monitor mww 0xFFE00024 0x00000000
monitor mww 0xFFE00000 0x01002539
monitor eCosBoard_profile
load
monitor eCosBoard_profile_done
source /tmp/ecosboard/packages/services/profile/gprof/current/host/gprof.gdb
gprof_dump
shell cp gmon.out /tmp/ecosboard/build/src
echo To view: cd /tmp/ecosboard/build/src && gprof openocd
Performance problems:
It seems the problem is that the actual flash programming takes time.
hal_delay_us() is invoked between each time the
CPU is polled for whether flash programming has completed.
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls Ts/call Ts/call name
35.82 37.66 37.66 hal_delay_us
11.90 50.17 12.51 arm7tdmi_clock_out
9.86 60.54 10.37 gdb_get_packet
5.36 66.17 5.63 memcpy
4.34 70.73 4.56 target_buffer_get_u32
3.34 74.25 3.51 embeddedice_read_reg_w_che
ck
1.39 75.71 1.46 arm7_9_write_memory
1.34 77.11 1.40 cyg_tcp_output
1.33 78.51 1.40 __udivsi3
1.11 79.68 1.17 cyg_tcp_input
1.07 80.80 1.13 arm7tdmi_store_word_regs
0.95 81.81 1.00 __udivdi3
0.95 82.80 1.00 __umodsi3
0.93 83.78 0.98 arm7tdmi_write_core_regs
0.86 84.68 0.91 arm7_9_poll
0.85 85.57 0.89 memset
0.77 86.38 0.81 cyg_splx
0.64 87.05 0.67 cyg_in_cksumdata
0.63 87.71 0.66 openeth_deliver
0.57 88.31 0.60 strstr
0.51 88.85 0.53 eth_drv_recv
0.49 89.36 0.52 cyg_splinternal
0.49 89.88 0.52 cyg_splimp
0.46 90.36 0.48 cyg_ip_input
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