This is an automated email from Gerrit. Uwe Hermann ([email protected]) just uploaded a new patch set to Gerrit, which you can find at http://openocd.zylin.com/564
-- gerrit commit 77e4d2da3a1b9f3ccbcab4e9f3fbacf90c46d84b Author: Uwe Hermann <[email protected]> Date: Wed Apr 11 00:02:51 2012 +0200 Glyn Tonga2: Faster JTAG speed after CPU/RAM init. Change-Id: Ib08dae0035355138c468483a7ee2d73aadedf430 Signed-off-by: Uwe Hermann <[email protected]> diff --git a/tcl/board/glyn_tonga2.cfg b/tcl/board/glyn_tonga2.cfg index 783ef9f..17ed3cf 100644 --- a/tcl/board/glyn_tonga2.cfg +++ b/tcl/board/glyn_tonga2.cfg @@ -16,10 +16,38 @@ source [find target/tmpa900.cfg] # Target configuration # ######################## -$_TARGETNAME configure -event reset-init { tonga2_init } +# Initial JTAG speed should not exceed 1/6 of the initial CPU clock +# frequency (24MHz). Be conservative and use 1/8 of the frequency. +# (24MHz / 8 = 3MHz) +adapter_khz 3000 -proc tonga2_init { } { +$_TARGETNAME configure -event reset-start { + # Upon reset, set the JTAG frequency to 3MHz again, see above. + echo "Setting JTAG speed to 3MHz until clocks are initialized." + adapter_khz 3000 + + # Halt the CPU. + halt + + # Disable faster memory access for now. + arm7_9 fast_memory_access disable +} + +$_TARGETNAME configure -event reset-init { + # Setup clocks, and initialize SRAM and DDR SDRAM. + tonga2_init + # At this point the CPU is running at 192MHz, increase JTAG speed. + # Tests showed that 15MHz works OK, higher speeds can cause problems, + # though. Not sure if this is a CPU issue or JTAG adapter issue. + echo "Increasing JTAG speed to 15MHz." + adapter_khz 15000 + + # Enable faster memory access. + arm7_9 fast_memory_access enable +} + +proc tonga2_init { } { ###################### # PLL initialization # ###################### @@ -160,6 +188,8 @@ proc tonga2_init { } { # smc_direct_cmd_5 (SMC Direct Command register): # cmd_type = UpdateRegs, chip_select = CS1 mww 0xf4311010 0x00c00000 + + echo "Clocks, SRAM, and DDR SDRAM are now initialized." } ####################### -- ------------------------------------------------------------------------------ Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev _______________________________________________ OpenOCD-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/openocd-devel
