57 lines
2.1 KiB
INI
57 lines
2.1 KiB
INI
# OpenOCD Configuration to REBOOT a SiFive HiFive Pro P550 Board (v3)
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# ----------------------------------------------------------------
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# 1. Adapter and Board Configuration
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# ----------------------------------------------------------------
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adapter driver ftdi
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ftdi channel 2
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ftdi vid_pid 0x0403 0x6011
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# NEW: Set the JTAG clock speed.
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# Start with a conservative but reasonable speed. 1000 kHz = 1 MHz.
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# If this works, you can try increasing it to 5000 or 10000 for faster performance.
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adapter speed 1000
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ftdi layout_init 0x0808 0x0a1b
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ftdi layout_signal nSRST -oe 0x0200
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ftdi layout_signal nTRST -data 0x0100 -oe 0x0100
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# ----------------------------------------------------------------
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# 2. JTAG Chain and Target Configuration
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# ----------------------------------------------------------------
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transport select jtag
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set _CHIPNAME riscv
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jtag newtap $_CHIPNAME cpu -irlen 5
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target create riscv.cpu0 riscv -chain-position $_CHIPNAME.cpu -coreid 0
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target create riscv.cpu1 riscv -chain-position $_CHIPNAME.cpu -coreid 1
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target create riscv.cpu2 riscv -chain-position $_CHIPNAME.cpu -coreid 2
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target create riscv.cpu3 riscv -chain-position $_CHIPNAME.cpu -coreid 3
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target smp riscv.cpu0 riscv.cpu1 riscv.cpu2 riscv.cpu3
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# ----------------------------------------------------------------
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# 3. Reset Configuration and Execution
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# ----------------------------------------------------------------
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# MODIFIED: Changed the reset configuration.
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# By removing 'srst_pulls_trst', we are telling OpenOCD to handle the
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# JTAG reset (nTRST) and the system reset (nSRST) as separate signals.
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# This is often more reliable on complex SoCs.
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reset_config srst_only srst_assert_width 100 srst_deassert_delay 100
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# Initialize OpenOCD and connect to the target
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init
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# --- The Improved Reboot Sequence ---
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# 'reset halt' asserts the reset line, then immediately halts the cores
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# as they come out of reset, before they can execute any code.
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echo "!!! Issuing reset halt to gain control..."
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reset halt
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# Now that the system is halted and stable, we can let it run.
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echo "!!! Resuming execution to complete the reboot..."
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resume
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# Exit OpenOCD
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shutdown
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