# OpenOCD configuration for GD32F470ZGT6 on LiangShanPi board
# Uses CMSIS-DAP debugger (onboard)

# Interface - onboard CMSIS-DAP
source [find interface/cmsis-dap.cfg]

# If using external ST-Link:
# source [find interface/stlink.cfg]
# If using external J-Link:
# source [find interface/jlink.cfg]

# Transport: SWD
transport select swd

# Target: GD32F470 (Cortex-M4 with FPU, similar to STM32F4)
set CHIPNAME gd32f470
set ENDIAN little

# Target configuration
source [find target/stm32f4x.cfg]

# GD32F470 specific configuration
# Flash: 1024KB, RAM: 192KB + 64KB TCM
# Note: Using STM32F4 config as base - adjust flash size
$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size 0x30000

# Reset configuration
reset_config srst_nogate

# Flash bank: 1MB internal flash
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME stm32f2x 0x08000000 0 0 0 $_TARGETNAME

# SDRAM is at 0xC0000000, not mapped in OpenOCD (external)

proc program_elf {elf_file} {
    echo "Programming: $elf_file"
    reset init
    flash write_image erase $elf_file
    verify_image $elf_file
    reset run
}

proc program_hex {hex_file} {
    echo "Programming: $hex_file"
    reset init
    flash write_image erase $hex_file
    reset run
}

proc program_bin {bin_file addr} {
    echo "Programming: $bin_file at 0x$addr"
    reset init
    flash write_image erase $bin_file $addr
    reset run
}

echo "GD32F470ZGT6 OpenOCD configuration loaded"
echo "Commands:"
echo "  program_elf <file>  - Program ELF file"
echo "  program_hex <file>  - Program HEX file"
echo "  program_bin <file> <addr> - Program BIN file"