1 files changed, 111 insertions, 0 deletions
diff --git a/ecosflash/notes.txt b/ecosflash/notes.txt
new file mode 100644
index 00000000..21839127
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+++ b/ecosflash/notes.txt
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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
+\ No newline at end of file