See Freescale App Note 4493 for more information about
this erratum.
- CONFIG_A003399_NOR_WORKAROUND
- Enables a workaround for IFC erratum A003399. It is only
- required during NOR boot.
-
- CONFIG_A008044_WORKAROUND
- Enables a workaround for T1040/T1042 erratum A008044. It is only
- required during NAND boot and valid for Rev 1.0 SoC revision
-
CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY
This is the value to write into CCSR offset 0x18600
boards with QUICC Engines require OF_QE to set UCC MAC
addresses
- CONFIG_OF_SYSTEM_SETUP
-
- Other code has addition modification that it wants to make
- to the flat device tree before handing it off to the kernel.
- This causes ft_system_setup() to be called before booting
- the kernel.
-
CONFIG_OF_IDE_FIXUP
U-Boot can detect if an IDE device is present or not.
CONFIG_SCSI) you must configure support for at
least one non-MTD partition type as well.
-- IDE Reset method:
- CONFIG_IDE_RESET - is this is defined, IDE Reset will
- be performed by calling the function
- ide_set_reset(int reset)
- which has to be defined in a board specific file
-
-- ATAPI Support:
- CONFIG_ATAPI
-
- Set this to enable ATAPI support.
-
- LBA48 Support
CONFIG_LBA48
When enabled, makes the IDE subsystem use 64bit sector addresses.
Default is 32bit.
-- SCSI Support:
- CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and
- CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID *
- CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the
- maximum numbers of LUNs, SCSI ID's and target
- devices.
-
- The environment variable 'scsidevs' is set to the number of
- SCSI devices found during the last scan.
-
- NETWORK Support (PCI):
CONFIG_E1000_SPI
Utility code for direct access to the SPI bus on Intel 8257x.
display); also select one of the supported displays
by defining one of these:
- CONFIG_ATMEL_LCD:
-
- HITACHI TX09D70VM1CCA, 3.5", 240x320.
-
CONFIG_NEC_NL6448AC33:
NEC NL6448AC33-18. Active, color, single scan.
The clock frequency of the MII bus
- CONFIG_PHY_RESET_DELAY
-
- Some PHY like Intel LXT971A need extra delay after
- reset before any MII register access is possible.
- For such PHY, set this option to the usec delay
- required. (minimum 300usec for LXT971A)
-
CONFIG_PHY_CMD_DELAY (ppc4xx)
Some PHY like Intel LXT971A need extra delay after
server to contact when using the "tftboot" command.
(Environment variable "serverip")
- CONFIG_KEEP_SERVERADDR
-
- Keeps the server's MAC address, in the env 'serveraddr'
- for passing to bootargs (like Linux's netconsole option)
-
- Gateway IP address:
CONFIG_GATEWAYIP
from a BOOTP client in networks with unusually high latency.
- DHCP Advanced Options:
- You can fine tune the DHCP functionality by defining
- CONFIG_BOOTP_* symbols:
-
- CONFIG_BOOTP_NISDOMAIN
- CONFIG_BOOTP_BOOTFILESIZE
- CONFIG_BOOTP_NTPSERVER
- CONFIG_BOOTP_TIMEOFFSET
- CONFIG_BOOTP_VENDOREX
- CONFIG_BOOTP_MAY_FAIL
-
- CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip
- environment variable, not the BOOTP server.
-
- CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found
- after the configured retry count, the call will fail
- instead of starting over. This can be used to fail over
- to Link-local IP address configuration if the DHCP server
- is not available.
-
- CONFIG_BOOTP_DHCP_REQUEST_DELAY
-
- A 32bit value in microseconds for a delay between
- receiving a "DHCP Offer" and sending the "DHCP Request".
- This fixes a problem with certain DHCP servers that don't
- respond 100% of the time to a "DHCP request". E.g. On an
- AT91RM9200 processor running at 180MHz, this delay needed
- to be *at least* 15,000 usec before a Windows Server 2003
- DHCP server would reply 100% of the time. I recommend at
- least 50,000 usec to be safe. The alternative is to hope
- that one of the retries will be successful but note that
- the DHCP timeout and retry process takes a longer than
- this delay.
- Link-local IP address negotiation:
Negotiate with other link-local clients on the local network
FLAGADM
- Error Recovery:
- CONFIG_NET_RETRY_COUNT
-
- This variable defines the number of retries for
- network operations like ARP, RARP, TFTP, or BOOTP
- before giving up the operation. If not defined, a
- default value of 5 is used.
-
- CONFIG_ARP_TIMEOUT
-
- Timeout waiting for an ARP reply in milliseconds.
-
- CONFIG_NFS_TIMEOUT
-
- Timeout in milliseconds used in NFS protocol.
- If you encounter "ERROR: Cannot umount" in nfs command,
- try longer timeout such as
- #define CONFIG_NFS_TIMEOUT 10000UL
-
Note:
In the current implementation, the local variables
this is instead controlled by the value of
/config/load-environment.
-- TFTP Fixed UDP Port:
- CONFIG_TFTP_PORT
-
- If this is defined, the environment variable tftpsrcp
- is used to supply the TFTP UDP source port value.
- If tftpsrcp isn't defined, the normal pseudo-random port
- number generator is used.
-
- Also, the environment variable tftpdstp is used to supply
- the TFTP UDP destination port value. If tftpdstp isn't
- defined, the normal port 69 is used.
-
- The purpose for tftpsrcp is to allow a TFTP server to
- blindly start the TFTP transfer using the pre-configured
- target IP address and UDP port. This has the effect of
- "punching through" the (Windows XP) firewall, allowing
- the remainder of the TFTP transfer to proceed normally.
- A better solution is to properly configure the firewall,
- but sometimes that is not allowed.
-
CONFIG_STANDALONE_LOAD_ADDR
This option defines a board specific value for the
CONFIG_SPL_INIT_MINIMAL
Arch init code should be built for a very small image
- CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR
- Sector to load kernel uImage from when MMC is being
- used in raw mode (for Falcon mode)
-
CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS
Sector and number of sectors to load kernel argument
CONFIG_SPL_SKIP_RELOCATE
Avoid SPL relocation
- CONFIG_SPL_NAND_IDENT
- SPL uses the chip ID list to identify the NAND flash.
- Requires CONFIG_SPL_NAND_BASE.
-
CONFIG_SPL_UBI
Support for a lightweight UBI (fastmap) scanner and
loader
- CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f()
- CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r()
- CONFIG_BOARD_LATE_INIT: Call board_late_init()
-- CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init()
Configuration Settings:
-----------------------
Enables allocating and saving a kernel copy of the bd_info in
space between "bootm_low" and "bootm_low" + BOOTMAPSZ.
-- CONFIG_SYS_MAX_FLASH_BANKS:
- Max number of Flash memory banks
-
- CONFIG_SYS_MAX_FLASH_SECT:
Max number of sectors on a Flash chip
while unprotecting/erasing/programming. Please only enable
this option if you really know what you are doing.
-- CONFIG_SYS_RX_ETH_BUFFER:
- Defines the number of Ethernet receive buffers. On some
- Ethernet controllers it is recommended to set this value
- to 8 or even higher (EEPRO100 or 405 EMAC), since all
- buffers can be full shortly after enabling the interface
- on high Ethernet traffic.
- Defaults to 4 if not defined.
-
- CONFIG_ENV_MAX_ENTRIES
Maximum number of entries in the hash table that is used
the default environment is used; a new CRC is computed as soon as you
use the "saveenv" command to store a valid environment.
-- CONFIG_SYS_FAULT_ECHO_LINK_DOWN:
- Echo the inverted Ethernet link state to the fault LED.
-
- Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR
- also needs to be defined.
-
- CONFIG_SYS_FAULT_MII_ADDR:
MII address of the PHY to check for the Ethernet link state.
If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be
forced to a value that ensures that CCSR is not relocated.
-- CONFIG_IDE_AHB:
- Most IDE controllers were designed to be connected with PCI
- interface. Only few of them were designed for AHB interface.
- When software is doing ATA command and data transfer to
- IDE devices through IDE-AHB controller, some additional
- registers accessing to these kind of IDE-AHB controller
- is required.
-
- CONFIG_SYS_IMMR: Physical address of the Internal Memory.
DO NOT CHANGE unless you know exactly what you're
doing! (11-4) [MPC8xx systems only]
projects / platform / kernel / u-boot.git / blobdiff