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Update README files

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This commit is contained in:
Gregory Nutt 2015-05-01 12:09:03 -06:00
parent 22263ddf5c
commit 82c36c628e
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20
configs/sama5d3-xplained/README.txt
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@ -642,6 +642,26 @@ Load NuttX with U-Boot on AT91 boards
2014-3-30: These instructions were adapted from the Linux4SAM website 2014-3-30: These instructions were adapted from the Linux4SAM website
but have not yet been used. but have not yet been used.
Using JTAG
----------
This description assumes that you have a JTAG debugger such as Segger
J-Link connected to the SAMA5D3-Xplained.
1. Start the GDB server
2. Start GDB
3. Use the 'target remote localhost:xxxx' command to attach to the GDG
server
4. Do 'mon reset' then 'mon go' to start the internal boot loader (maybe
U-Boot).
5. Let the boot loader run until it completes SDRAM initialization, then
do 'mon halt'.
6. Now you have SDRAM initialized and you use 'load nuttx' to load the
ELF file into SDRAM.
7. Use 'file nuttx' to load symbols
8. Set the PC to the NuttX entry point 'mon pc 0x20008040' and start
nuttx using 'mon go'.
Buttons and LEDs Buttons and LEDs
================ ================

23
configs/sama5d3x-ek/README.txt
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@ -458,6 +458,9 @@ Creating and Using NORBOOT
Running NuttX from SDRAM Running NuttX from SDRAM
======================== ========================
Executing from SDRAM
--------------------
NuttX may be executed from SDRAM. But this case means that the NuttX NuttX may be executed from SDRAM. But this case means that the NuttX
binary must reside on some other media (typically NAND FLASH, Serial binary must reside on some other media (typically NAND FLASH, Serial
FLASH, or, perhaps even a TFTP server). In these cases, an intermediate FLASH, or, perhaps even a TFTP server). In these cases, an intermediate
@ -477,6 +480,26 @@ Running NuttX from SDRAM
advance but instead has to be calculated from the bootloader PLL configuration. advance but instead has to be calculated from the bootloader PLL configuration.
See the TODO list at the end of this file for further information. See the TODO list at the end of this file for further information.
Using JTAG
----------
This description assumes that you have a JTAG debugger such as Segger
J-Link connected to the SAMA5D3-Xplained.
1. Start the GDB server
2. Start GDB
3. Use the 'target remote localhost:xxxx' command to attach to the GDG
server
4. Do 'mon reset' then 'mon go' to start the internal boot loader (maybe
U-Boot).
5. Let the boot loader run until it completes SDRAM initialization, then
do 'mon halt'.
6. Now you have SDRAM initialized and you use 'load nuttx' to load the
ELF file into SDRAM.
7. Use 'file nuttx' to load symbols
8. Set the PC to the NuttX entry point 'mon pc 0x20008040' and start
nuttx using 'mon go'.
NuttX Configuration NuttX Configuration
------------------- -------------------

20
configs/sama5d4-ek/README.txt
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@ -855,6 +855,26 @@ Running NuttX from SDRAM
2014-3-30: These instructions were adapted from the Linux4SAM website 2014-3-30: These instructions were adapted from the Linux4SAM website
but have not yet been used. but have not yet been used.
Using JTAG
----------
This description assumes that you have a JTAG debugger such as Segger
J-Link connected to the SAMA5D3-Xplained.
1. Start the GDB server
2. Start GDB
3. Use the 'target remote localhost:xxxx' command to attach to the GDG
server
4. Do 'mon reset' then 'mon go' to start the internal boot loader (maybe
U-Boot).
5. Let the boot loader run until it completes SDRAM initialization, then
do 'mon halt'.
6. Now you have SDRAM initialized and you use 'load nuttx' to load the
ELF file into SDRAM.
7. Use 'file nuttx' to load symbols
8. Set the PC to the NuttX entry point 'mon pc 0x20008040' and start
nuttx using 'mon go'.
SAMA4D44-MB RevC PIO Usage SAMA4D44-MB RevC PIO Usage
========================== ==========================