+++ /dev/null
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-<HTML
-><HEAD
-><TITLE
->RedBoot Startup Mode</TITLE
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-TITLE="Getting Started with RedBoot"
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-TITLE="RedBoot Editing Commands"
-HREF="redboot-editing-commands.html"><LINK
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-TITLE="RedBoot Resource Usage"
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->Chapter 1. Getting Started with RedBoot</TD
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-><A
-NAME="STARTUP-MODE">RedBoot Startup Mode</H1
-><P
->
- </P
-><P
->RedBoot can normally be configured to run in a number of startup
-modes (or just "modes" for short), determining its location of
-residence and execution:
-<P
-></P
-><DIV
-CLASS="VARIABLELIST"
-><DL
-><DT
->ROM mode</DT
-><DD
-><P
->In this mode, RedBoot both resides and executes from
- ROM memory (flash or EPROM). This mode is used when there are limited
- RAM resources. The flash commands cannot update the region of flash
- where the RedBoot image resides. In order to update the RedBoot image
- in flash, it is necessary to run a RAM mode instance of
- RedBoot.</P
-></DD
-><DT
->ROMRAM mode</DT
-><DD
-><P
->In this mode, RedBoot resides in ROM memory (flash or
- EPROM), but is copied to RAM memory before it starts executing. The
- RAM footprint is larger than for ROM mode, but there are two
- advantages to make up for this: it normally runs faster (relevant
- only on slower boards) and it is able to update the flash region
- where the image resides.</P
-></DD
-><DT
->RAM mode</DT
-><DD
-><P
->In this mode, RedBoot both resides and executes from
- RAM memory. This is used for updating a primary ROM
- mode image in situ and sometimes as part of the RedBoot installation
- on the board when there's already an existing (non-RedBoot) boot
- monitor available.</P
-><P
-> You can only use ROM and ROMRAM mode images for booting a
- board - a RAM mode image cannot run unless loaded by another ROM
- monitor. There is no need for this startup mode if a RedBoot ROMRAM
- mode image is the primary boot monitor. When this startup mode is
- programmed into flash (as a convenience as it's fast to load from
- flash) it will generally be named as "RedBoot[RAM]" in the FIS
- directory. </P
-></DD
-></DL
-></DIV
->
-
-The chosen mode has influence on flash and RAM resource usage (see
-<A
-HREF="resource-usage.html"
->the Section called <I
->RedBoot Resource Usage</I
-></A
->) and the procedure of an in situ update
-of RedBoot in flash (see <A
-HREF="updating-redboot.html"
->Chapter 4</A
->).</P
-><P
->The startup mode is controlled by the option CYG_HAL_STARTUP
-which resides in the platform HAL. Some platforms provide only some of
-the RAM, ROM, and ROMRAM modes, others provide additional
-modes.</P
-><P
->To see mode of a currently executing RedBoot, issue the
-<B
-CLASS="COMMAND"
->version</B
-> command, which prints the RedBoot banner,
-including the startup mode (here ROM):
-<TABLE
-BORDER="5"
-BGCOLOR="#E0E0F0"
-WIDTH="70%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
->RedBoot><TT
-CLASS="USERINPUT"
-><B
->version</B
-></TT
->
-
-RedBoot(tm) bootstrap and debug environment <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->[ROM]</I
-></SPAN
->
-Non-certified release, version UNKNOWN - built 13:31:57, May 17 2002</PRE
-></TD
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->RedBoot Editing Commands</TD
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->Up</A
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