ADLINK aTCA-N700 - Manual (Page 24)

aTCA-N700 SW Users Guide
１８
5. Booting
The aTCA-N700 provides various NVMs (Non Volatile memory) to store software
images and log system events for different purposes, especially used for a booting
procedure.
The memory map for the devices is illustrated in Table 5-1.
Table 5-1 NVM Map
Host Device Size Contents format U-Boot linux Remark
0xA0000
U-Boot
image
binary read/write /dev/mtd0
0x20000
U-Boot
Env.
binary read/write /dev/mtd1
SPI_FLASH1
0x40000 Reserved binary read/write /dev/mtd2
0xA0000
U-Boot
image
binary read/write /dev/mtd0
0x20000
U-Boot
Env.
binary read/write /dev/mtd1
SPI_FLASH2
0x40000 Reserved binary read/write /dev/mtd2
Same S/W
access point to
SPI_FLASH1,
SPI_FLASH2.
Selected by a
CPLD register
256 MiB
OS
images
VFAT read only
/dev/sda1
(/bootA)
256 MiB
System
config
EXT3
no
access /dev/sda2
(/var/NVMA)
CHIP_SSD1
(remains)
user
defined user
defined no
access
/dev/sda3
256 MiB
OS
images
VFAT read only
/dev/sda4
(/var/bootB)
256 MiB
System
config
EXT3
no
access /dev/sda5
(/var/NVMB)
LMP
CHIP_SSD2
(remains)
user
defined user
defined no
access
/dev/sda6
1MiB
U-Boot
image
binary read/write /dev/mtd0
6MiB Reserved binary read/write /dev/mtd1 NOR_FLASH1
1MiB
U-Boot
Env.
binary read/write /dev/mtd2
1MiB
U-Boot
image
binary read/write /dev/mtd0
6MiB Reserved binary read/write /dev/mtd1 NOR_FLASH2
1MiB
U-Boot
Env.
binary read/write /dev/mtd2
Same S/W
access point to
NOR_FLASH1,
NOR_FLASH2.
Selected by a
CPLD register
256 MiB
OS
images
UBIFS read only
/dev/ubi0
(/bootA)
256 MiB
System
config
UBIFS
no
access /dev/ubi1
(/var/NVMA)
NAND_FLASH1
(remains)
user
defined user
defined no
access
-
256 MiB
OS
images
UBIFS read only
/dev/ubi2
(/bootB)
256 MiB
System
config
UBIFS
no
access /dev/ubi3
(/var/NVMB)
OCTEON_R
NAND_FLASH2
(remains)
user
defined user
defined no
access
-