TNETV1644ZDU6 datasheet(90/306 Pages) TI1

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3.4.2.2 BOOTCMPLT Register

TMS320DM6437

Digital Media Processor

SPRS345D – NOVEMBER 2006 – REVISED JUNE 2008

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If the bootloader code detects an error during boot, it records the error status in the Boot Complete

(BOOTCMPLT) register.

In addition, the BOOTCMPLT register is used for communication between the external host and the

bootloader code during a Host Boot (PCI Boot or HPI boot). Once the external host has completed boot, it

must perform the following communication with the bootloader code:

• Write the desired 32-bit CPU starting address in the DSPBOOTADDR register (see Section 3.4.2.3,

DSPBOOTADDR Register).

• Write a ‘1’ to the Boot Complete (BC) bit field in the BOOTCMPLT register to indicate that the host has

completed booting this device.

Once the bootloader code detects BC = 1, it directs the CPU to begin executing from the

DSPBOOTADDR register.

The BOOTCMPLT register is reset by any device-level global reset. For the list of device-level global

resets, see Section 6.5, Reset.

RESERVED

ERR

R/W-0000 0000 0000

R/W-0000

RESERVED

R/W- 0000 0000 0000 000

R/W-0

LEGEND: R = Read; W = Write; -n = value after reset

Figure 3-4. BOOTCMPLT Register— 0x01C4 000C

Table 3-10. BOOTCMPLT Register Description

Bit

Field Name

Description

31:20

RESERVED Reserved. For proper device operation, the user should only write "0" to these bits.

Boot Error

0000 = No Error (default).

19:16

ERR

0001 - 1111 = bootloader software detected a boot error and aborted the boot. For the error codes, see the

Using the TMS320DM643x DMP Bootloader Application Report (literature number SPRAAG0).

15:1

RESERVED Reserved. For proper device operation, the user should only write "0" to these bits.

Boot Complete Flag from Host

This field is only applicable to Host Boots.

0 = Host has not completed booting this device (default).

1 = Host has completed booting this device. DSP can begin executing from the DSPBOOTADDR register

value.

Device Configurations

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