49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
from arm_ds.debugger_v1 import Debugger
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from arm_ds.debugger_v1 import DebugException
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import os
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# The Pandaboard must be in reset *before* this script starts.
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# The CPU driver is linked at this address
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LINKADDRESS = 0
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# The boot driver is relocated to this address
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RAMBASE = 0x80000000
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debugger = Debugger()
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ec = debugger.getCurrentExecutionContext()
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# Load the boot driver symbols
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im= ec.getImageService()
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im.loadSymbols('Barrelfish/armv7/sbin/boot_omap44xx', RAMBASE)
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# Use a hardware breakpoint to wait until the boot driver is loaded
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# and running.
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bs= ec.getBreakpointService()
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bs.setBreakpoint('boot_bsp_core', hw=True, temporary=True)
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# Use usbboot to download the image
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os.system('Barrelfish/tools/bin/usbboot Barrelfish/armv7_omap44xx_image')
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# Wait until we hit that breakpoint
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es = ec.getExecutionService()
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es.waitForStop()
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# The previous execution context is now invalid
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ec = debugger.getCurrentExecutionContext()
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# Get the CPU driver's final load address.
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vs = ec.getVariableService()
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kernel_start = vs.readValue('boot_arguments.cpu_driver_base')
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offset = int(kernel_start) - LINKADDRESS
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print "Kernel loaded at: %08x" % int(kernel_start), " linked at %08x" % LINKADDRESS, " offset %08x" % offset
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# Replace the boot driver symbols with the CPU driver symbols
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im.loadSymbols('Barrelfish/armv7/sbin/cpu_omap44xx', offset)
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# Finally, advance to arch_init()
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es = ec.getExecutionService()
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es.resumeTo('arch_init')
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