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TMS320DM6437
Digital Media Processor
SPRS345B–NOVEMBER 2006–REVISED MARCH 2007
3.4.2.2
BOOTCMPLT Register
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
.
31
20
19
16
RESERVED
ERR
R/W-0000 0000 0000
R/W-0000
15
1
0
RESERVED
BC
R/W- 0000 0000 0000 000
R/W-0
LEGEND: R = Read; W = Write; -
n
= value after reset
Figure 3-4. BOOTCMPLT Register
Table 3-10. BOOTCMPLT Register Description
Bit
31:20
Field Name
RESERVED Reserved. For proper device operation, the user should
only
write "0" to these bits.
Boot Error
0000 = No Error
(default)
.
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
).
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.
BC
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.
Description
19:16
15:1
0
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Device Configurations
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