"""
 mbed CMSIS-DAP debugger
 Copyright (c) 2006-2013 ARM Limited

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
"""

from ...flash.flash import Flash
from ...core.coresight_target import (SVDFile, CoreSightTarget)
from ...core.memory_map import (FlashRegion, RamRegion, MemoryMap)

FLASH_ALGO = { 'load_address' : 0x10000000,
               'instructions' : [
                                0xe00abe00, 0x062d780d, 0x24084068, 0xd3000040, 0x1e644058, 0x1c49d1fa, 0x2a001e52, 0x4770d1f2,
                                0x7803e005, 0x42931c40, 0x2001d001, 0x1e494770, 0x2000d2f7, 0x00004770, 0x47700b00, 0x484e494f,
                                0x60084449, 0x2100484e, 0x22016301, 0x63416342, 0x6b416342, 0xd0fc07c9, 0x49496382, 0x39402002,
                                0x20007008, 0x20004770, 0xb5f84770, 0x20324c45, 0x2500444c, 0x46222607, 0x4621c261, 0x4f423114,
                                0x91004620, 0x696047b8, 0xd10c2800, 0x46212034, 0x483ac161, 0x68004448, 0x462060e0, 0x47b89900,
                                0x28006960, 0x2001d000, 0xb5f8bdf8, 0x0b044d35, 0x2032444d, 0x4629606c, 0x311460ac, 0x4e326028,
                                0x4628460f, 0x696847b0, 0xd10d2800, 0x2034606c, 0x602860ac, 0x46394829, 0x68004448, 0x462860e8,
                                0x696847b0, 0xd0002800, 0xbdf82001, 0x0006b5f8, 0xd11e4614, 0x0180200b, 0x6bc11820, 0x42814823,
                                0x4823d038, 0xd0354281, 0x42814822, 0x4822d032, 0xd02f4281, 0x68206861, 0x184068e2, 0x188968a1,
                                0x69211840, 0x69611840, 0x69a11840, 0x42401840, 0x4d1461e0, 0x444d0b30, 0x60682132, 0x60a86029,
                                0x31144629, 0x46284f10, 0x47b89100, 0x28006968, 0x606ed110, 0x60ac2033, 0x20016028, 0x60e80280,
                                0x44484806, 0x61286800, 0x99004628, 0x696847b8, 0xd0002800, 0xbdf82001, 0x00002ee0, 0x00000004,
                                0x40048040, 0x00000008, 0x1fff1ff1, 0x4e697370, 0x12345678, 0x87654321, 0x43218765, 0x00000000,
                                0x00000000
                                ],
               'pc_init' : 0x1000003d,
               'pc_eraseAll' : 0x1000006b,
               'pc_erase_sector' : 0x100000ab,
               'pc_program_page' : 0x100000ed,
               'begin_data' : 0x100001c4,
               # Double buffering is not supported since there is not enough ram
               'begin_stack' : 0x10001000,
               'static_base' : 0x1000019c,
               'min_program_length' : 256,
               'analyzer_supported' : False
              };

class Flash_lpc11u24(Flash):

    def __init__(self, target):
        super(Flash_lpc11u24, self).__init__(target, FLASH_ALGO)

    # TODO - temporary until flash algo is rebuilt with 4K page program size
    def program_page(self, flashPtr, bytes):
        write_size = 1024
        for i in range(0, 4):
            data = bytes[i * write_size : (i + 1) * write_size]
            Flash.program_page(self, flashPtr + i * write_size, data)

class LPC11U24(CoreSightTarget):
    VENDOR = "NXP"
    
    memoryMap = MemoryMap(
        FlashRegion(    start=0,           length=0x8000,       blocksize=0x1000, is_boot_memory=True,
            flash_class=Flash_lpc11u24),
        RamRegion(      start=0x10000000,  length=0x1000)
        )

    def __init__(self, link):
        super(LPC11U24, self).__init__(link, self.memoryMap)
        self._svd_location = SVDFile(vendor="NXP", filename="LPC11Uxx_v7.svd", is_local=False)

    def reset_and_halt(self, reset_type=None, map_to_user=True):
        super(LPC11U24, self).reset_and_halt(reset_type)

        # Remap to use flash and set SP and SP accordingly
        if map_to_user:
            self.write_memory(0x40048000, 0x2, 32)
            sp = self.read_memory(0x0)
            pc = self.read_memory(0x4)
            self.write_core_register('sp', sp)
            self.write_core_register('pc', pc)
