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base repository: whitequark/glasgow
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  • 1 commit
  • 1 file changed
  • 1 contributor

Commits on Nov 19, 2018

  1. arch.arc.mec16xx: add Flash IP registers. 

    Unfortunately I couldn't get these to do anything...
    @whitequark
    whitequark committed Nov 19, 2018
    Copy the full SHA
    a950efd View commit details
Showing with 69 additions and 0 deletions.
  1. +69 −0 software/glasgow/arch/arc/mec16xx.py
69 changes: 69 additions & 0 deletions software/glasgow/arch/arc/mec16xx.py
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# Ref: Microchip MEC1618/MEC1618i Low Power 32-bit Microcontroller with Embedded Flash
# Document Number: DS00002339A

from bitarray import bitarray

from ...support.bits import *


__all__ = [
# Flash registers
"Flash_Mbx_Index_addr", "Flash_Mbx_Data_addr",
"Flash_Data_addr", "Flash_Address_addr", "Flash_Command_addr", "Flash_Status_addr",
"Flash_Config_addr", "Flash_Init_addr", "Flash_Command", "Flash_Mode_Standby",
"Flash_Mode_Read", "Flash_Mode_Program", "Flash_Mode_Erase", "Flash_Status",
"Flash_Config",
]


Flash_base_addr = 0xff_3800

Flash_Mbx_Index_addr = Flash_base_addr + 0x00
Flash_Mbx_Data_addr = Flash_base_addr + 0x04

Flash_Data_addr = Flash_base_addr + 0x100
Flash_Address_addr = Flash_base_addr + 0x104
Flash_Command_addr = Flash_base_addr + 0x108
Flash_Status_addr = Flash_base_addr + 0x10c
Flash_Config_addr = Flash_base_addr + 0x110
Flash_Init_addr = Flash_base_addr + 0x114

Flash_Command = Bitfield("Flash_Command", 4, [
("Flash_Mode", 2),
("Burst", 1),
("EC_Int", 1),
(None, 4),
("Reg_Ctl", 1),
])

Flash_Mode_Standby = 0
Flash_Mode_Read = 1
Flash_Mode_Program = 2
Flash_Mode_Erase = 3

Flash_Status = Bitfield("Flash_Status", 4, [
("Busy", 1),
("Data_Full", 1),
("Address_Full", 1),
("Boot_Lock", 1),
(None, 1),
("Boot_Block", 1),
("Data_Block", 1),
("EEPROM_Block", 1),
("Busy_Err", 1),
("CMD_Err", 1),
("Protect_Err", 1),
])

Flash_Config = Bitfield("Flash_Config", 4, [
("Reg_Ctl_En", 1),
("Host_Ctl", 1),
("Boot_Lock", 1),
("Boot_Protect_En", 1),
("Data_Protect", 1),
("Inhibit_JTAG", 1),
(None, 2),
("EEPROM_Access", 1),
("EEPROM_Protect", 1),
("EEPROM_Force_Block", 1),
])