Adsp-Bf531/Bf532/Bf533 Processor Boot Streams; Blocks And Block Headers - Analog Devices VisualDSP++ 3.5 Manual

ADSP-BF531/BF532/BF533 Processor Boot Streams

The following sections describe the boot stream, header, and flag frame-
work for ADSP-BF531, ADSP-BF532, and ADSP-BF533 processors.
• "Blocks and Block Headers" on page 2-19
• "Flags of Block Header" on page 2-20
• "Initialization Blocks" on page 2-21
The ADSP-BF531/BF532/BF533 processor boot stream is similar to the
boot stream that uses a second-stage kernel of ADSP-BF535 processors
(detailed in "ADSP-BF535 Processor Boot Streams" on page
ever, since the former processors do not employ a kernel, their boot
streams do not include the kernel code and the associated 4-byte header
on the top of the kernel code. There is also no 4-byte global header.

Blocks and Block Headers

As the loader converts the code from an input
prising the output loader file, each block is getting preceded by a 10-byte
header (Figure
or no block body (if it is a zero block). A description of the header struc-
ture can be found in
Table 2-3. ADSP-BF531/BF532/BF533 Block Header Structure
Bit Field
Address
Count
Flag
VisualDSP++ Loader Manual
for 16-Bit Processors
Blackfin Processor Loader/Splitter
2-10), followed by a block body (if it is a non-zero block)
Table 2-3.
Description
4-byte address at which the block resides in memory.
4-byte number of bytes to boot.
2-byte flag containing information about the block
Header" on page 2-20
file into blocks com-
.DXE
describes the flag structure.
2-8). How-
"Flags of Block
2-19