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Updated comments and README

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This commit is contained in:
Gregory Nutt 2014-04-01 18:27:08 -06:00
parent 015c911b8b
commit a23fc8cc56
3 changed files with 102 additions and 7 deletions
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57
configs/sama5d3-xplained/README.txt
View File

@ -5,7 +5,7 @@ README
development board. This board features the Atmel SAMA5D36 microprocessor.
See http://www.atmel.com/devices/sama5d36.aspx for further information.
PARAMTER SAMA5D36
PARAMETER SAMA5D36
------------------------- -------------
Pin Count 324
Max. Operating Frequency 536 MHz
@ -526,7 +526,52 @@ Load NuttX with U-Boot on AT91 boards
-n nuttx: Set image name.
-d nuttx.bin: Use image data from nuttx.bin.
This will generate a binary called uImage.
This will generate a binary called uImage. If you have the path to
mkimage in your PATH variable, then you can automatically build the
uImage file by adding the following to your .config file:
CONFIG_RAW_BINARY=y
CONFIG_UBOOT_UIMAGE=y
CONFIG_UIMAGE_LOAD_ADDRESS=0x20008000
CONFIG_UIMAGE_ENTRY_POINT=0x20008040
The uImage file can them be loaded into memory from a variety of sources
(serial, SD card, JFFS2 on NAND, TFTP).
STATUS:
2014-4-1: So far, I am unable to get U-Boot to execute the uImage
file. I get the following error messages (in this case
trying to load from an SD card):
U-Boot> fatload mmc 0 0x22000000 uimage
reading uimage
97744 bytes read in 21 ms (4.4 MiB/s)
U-Boot> bootm 0x22000000
## Booting kernel from Legacy Image at 0x22000000 ...
Image Name: nuttx
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 97680 Bytes = 95.4 KiB
Load Address: 20008000
Entry Point: 20008040
Verifying Checksum ... OK
XIP Kernel Image ... OK
FDT and ATAGS support not compiled in - hanging
### ERROR ### Please RESET the board ###
This, however, appears to be a usable workaround:
U-Boot> fatload mmc 0 0x20008000 nuttx.bin
mci: setting clock 257812 Hz, block size 512
mci: setting clock 257812 Hz, block size 512
mci: setting clock 257812 Hz, block size 512
gen_atmel_mci: CMDR 00001048 ( 8) ARGR 000001aa (SR: 0c100025) Command Time Out
mci: setting clock 257812 Hz, block size 512
mci: setting clock 22000000 Hz, block size 512
reading nuttx.bin
108076 bytes read in 23 ms (4.5 MiB/s)
U-Boot> go 0x20008040
## Starting application at 0x20008040 ...
os_start: Entry
Loading through network
@ -2623,9 +2668,15 @@ Configurations
for further information.
3. This configuration executes out of SDRAM flash and is loaded into
SDRAM from NAND, Serial DataFlash, or from a TFTPC sever via
SDRAM from NAND, Serial DataFlash, SD card or from a TFTPC sever via
U-Boot or BareBox. Data also is positioned in SDRAM.
I did most testing with nuttx.bin on an SD card. These are the
commands that I used to boot NuttX from the SD card:
U-Boot> fatload mmc 0 0x20008000 nuttx.bin
U-Boot> go 0x20008040
4. This configuration has support for NSH built-in applications enabled.
However, no built-in applications are selected in the base configuration.

5
configs/sama5d3-xplained/nsh/defconfig
View File

@ -30,9 +30,7 @@ CONFIG_WINDOWS_CYGWIN=y
CONFIG_INTELHEX_BINARY=y
# CONFIG_MOTOROLA_SREC is not set
CONFIG_RAW_BINARY=y
CONFIG_UBOOT_UIMAGE=y
CONFIG_UIMAGE_LOAD_ADDRESS=0x20008000
CONFIG_UIMAGE_ENTRY_POINT=0x20008000
# CONFIG_UBOOT_UIMAGE is not set
#
# Customize Header Files
@ -191,6 +189,7 @@ CONFIG_SAMA5_HSMC=y
CONFIG_SAMA5_DBGU_CONSOLE=y
CONFIG_SAMA5_DBGU_RXBUFSIZE=256
CONFIG_SAMA5_DBGU_TXBUFSIZE=256
# CONFIG_SAMA5_DBGU_NOCONFIG is not set
CONFIG_SAMA5_DBGU_BAUD=115200
CONFIG_SAMA5_DBGU_PARITY=0

47
configs/sama5d3x-ek/README.txt
View File

@ -647,7 +647,52 @@ Load NuttX with U-Boot on AT91 boards
-n nuttx: Set image name.
-d nuttx.bin: Use image data from nuttx.bin.
This will generate a binary called uImage.
This will generate a binary called uImage. If you have the path to
mkimage in your PATH variable, then you can automatically build the
uImage file by adding the following to your .config file:
CONFIG_RAW_BINARY=y
CONFIG_UBOOT_UIMAGE=y
CONFIG_UIMAGE_LOAD_ADDRESS=0x20008000
CONFIG_UIMAGE_ENTRY_POINT=0x20008040
The uImage file can them be loaded into memory from a variety of sources
(serial, SD card, JFFS2 on NAND, TFTP).
STATUS:
2014-4-1: So far, I am unable to get U-Boot to execute the uImage
file. I get the following error messages (in this case
trying to load from an SD card):
U-Boot> fatload mmc 0 0x22000000 uimage
reading uimage
97744 bytes read in 21 ms (4.4 MiB/s)
U-Boot> bootm 0x22000000
## Booting kernel from Legacy Image at 0x22000000 ...
Image Name: nuttx
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 97680 Bytes = 95.4 KiB
Load Address: 20008000
Entry Point: 20008040
Verifying Checksum ... OK
XIP Kernel Image ... OK
FDT and ATAGS support not compiled in - hanging
### ERROR ### Please RESET the board ###
This, however, appears to be a usable workaround:
U-Boot> fatload mmc 0 0x20008000 nuttx.bin
mci: setting clock 257812 Hz, block size 512
mci: setting clock 257812 Hz, block size 512
mci: setting clock 257812 Hz, block size 512
gen_atmel_mci: CMDR 00001048 ( 8) ARGR 000001aa (SR: 0c100025) Command Time Out
mci: setting clock 257812 Hz, block size 512
mci: setting clock 22000000 Hz, block size 512
reading nuttx.bin
108076 bytes read in 23 ms (4.5 MiB/s)
U-Boot> go 0x20008040
## Starting application at 0x20008040 ...
os_start: Entry
Loading through network