tcl/board/olimex_sam7_la2.cfg

   1 source [find target/at91sam7a2.cfg]
   2
   3 # delays needed to get stable reads of cpu state
   4 jtag_ntrst_delay 10
   5 adapter srst delay 200
   6
   7 # board uses pullup and connects only srst
   8 reset_config srst_open_drain
   9
  10 # srst is connected to NRESET of CPU and fully resets everything...
  11 reset_config srst_only srst_pulls_trst
  12
  13 adapter speed 1
  14 $_TARGETNAME configure -event reset-start {
  15         adapter speed 1
  16 }
  17
  18 $_TARGETNAME configure -event reset-init {
  19         # init script from http://www.mikrocontroller.net/topic/107462
  20         # AT91SAM7A2
  21         # AMC (advanced memory controller)
  22
  23         echo "setting up AMC"
  24         # AMC_CS0 - FLASH 1MB (0x40000000-0x400FFFFF) + DM9000E (0x40100000)
  25         mww 0xFFE00000 0x40003EBD
  26
  27         # AMC_CS1 - RAM low 2MB (0x40400000-0x405FFFFF)
  28         mww 0xFFE00004 0x404030A9
  29
  30         # AMC_CS2 - RAM high 2MB (0x40800000-0x405FFFFF)
  31         #mww 0xFFE00008 0x404030A9
  32         # changed to  0x40_8_
  33         mww 0xFFE00008 0x408030A9
  34
  35         # AMC_MCR
  36         mww 0xFFE00024 0x00000004
  37
  38         # AMC_RCR force remap
  39         mww 0xFFE00020 0x00000001
  40
  41         echo "set up AMC"
  42         sleep 100
  43
  44         # the following base addresses from the original script did not correspond to those from datasheet
  45         # changed bases from 0xFF000000 to 0xFFF00000
  46
  47         # disable watchdog, to prevent unwanted resets
  48         mww 0xFFFA0068 0x00000000
  49         echo "disabled watchdog"
  50
  51         sleep 50
  52
  53         # disable PLL
  54         mww 0xFFFEC004 0x18070004
  55
  56         # PLL = 10 ==> Coreclock = 6Mhz*10/2 = 30 Mhz
  57         mww 0xFFFEC010 0x762D800A
  58
  59         # enable PLL
  60         mww 0xFFFEC000 0x23050004
  61         echo "set up pll"
  62
  63         sleep 100
  64         adapter speed 5000
  65 }
  66
  67 $_TARGETNAME arm7_9 dcc_downloads enable
  68 $_TARGETNAME arm7_9 fast_memory_access enable
  69
  70 # remap:  ram at 0, flash at 0x40000000, like reset-init above does
  71 $_TARGETNAME configure -work-area-phys 0x00000000 -work-area-size 0x4000 -work-area-backup 1
  72 flash bank onboard.flash cfi 0x40000000 0x00100000 2 2 at91sam7a2.cpu
  73
  74 # boot: ram at 0x300000, flash at 0x0, useful if board is in funny configuration
  75 #$_TARGETNAME configure -work-area-phys 0x00300000 -work-area-size 0x4000 -work-area-backup 1
  76 #flash bank onboard1.flash cfi 0x00000000 0x00100000 2 2 at91sam7a2.cpu