MAC7200 datasheet(188/976 Pages) FREESCALE

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Secured Primary Bootloader Mode

MAC7200 Microcontroller Family Reference Manual, Rev. 2

110

Freescale Semiconductor

After Reset, the memory map may be re-mapped using the AAMR register in the MCM module. The

allowed combinations are shown in Table 9-8. The Peripheral space is always fixed at $FC00 0000, and is

not re-mappable.

9.6

Secured Primary Bootloader Mode

Secured Primary Bootloader Mode is typically used to execute application code in the final application,

where a software bootloader is required. Booting is done from the Shadow Block, with limited device

functionality. Secured Primary Bootloader Mode is identical to Normal Primary Bootloader Mode, except

that debug functionality (EICE, Nexus and the JTAG interface) is disabled and the FlexBus is turned off.

Please refer to Section 9.3, “Normal Primary Bootloader Mode” for the functionality available and the

memory map.

9.7

Secured Expanded Mode

Secured Single Expanded Mode is typically used to execute application code in the final application,

where on-chip Flash is not required. Alternatively, it is also used to unsecure secured devices. Booting is

Table 9-7. Device Memory Map in Secured Single Chip Mode (After Reset)1

1. This reset memory map equates to a reset value of $f0d0 0b08 in the AAMR register in the MCM module.

Address

Module

Size

(Bytes)

$2000 0000 - $2007 FFFF

$2000 0000 - $2004 FFFF

Flash Main Array (MAC72x1)

Flash Main Array (MAC72x2)

512K

320K

$00F0 0000 - $00F0 7FFF

Shadow Block

32K

$0008 0000 - $3FFF FFFF

Reserved

~1023M

$4000 0000 - $4000 7FFF

$4000 0000 - $4000 4FFF

SRAM2

2. The SRAM is mirrored across the entire 512MByte address range on a 32K boundary. Therefore, the first

word in SRAM may be read from or written to using address $4000 0000 or address $4000 8000 or address

$4001 0000, etc.

32K

20K

$4000 8000 - $FBFF FFFF

Reserved

3008M

$FC00 0000 - $FFFF FFFF

Peripheral Bus modules

64M

Table 9-8. Allowed Memory Maps in Secured Single Chip Mode

$0000 0000

$2000 0000

$4000 0000

AAMR Register

Unused

Flash Main Array

SRAM

$f0d0 0b80

SRAM

Flash Main Array

SRAM

$f0d0 0b8b

Flash Main Array

Unused

SRAM

$f0d0 0b08

Unused

SRAM

$f0d0 0b00

SRAM

Unused

SRAM

$f0d0 0b0b

Flash Main Array

SRAM

$f0d0 0bb8

Unused

SRAM

$f0d0 0bb0

SRAM

$f0d0 0bbb

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