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-rw-r--r--README51
1 files changed, 50 insertions, 1 deletions
diff --git a/README b/README
index 43074cf65f..67dc444bd4 100644
--- a/README
+++ b/README
@@ -432,6 +432,14 @@ The following options need to be configured:
Select high exception vectors of the ARM core, e.g., do not
clear the V bit of the c1 register of CP15.
+ CONFIG_SYS_THUMB_BUILD
+
+ Use this flag to build U-Boot using the Thumb instruction
+ set for ARM architectures. Thumb instruction set provides
+ better code density. For ARM architectures that support
+ Thumb2 this flag will result in Thumb2 code generated by
+ GCC.
+
- Linux Kernel Interface:
CONFIG_CLOCKS_IN_MHZ
@@ -777,6 +785,8 @@ The following options need to be configured:
CONFIG_CMD_JFFS2 * JFFS2 Support
CONFIG_CMD_KGDB * kgdb
CONFIG_CMD_LDRINFO ldrinfo (display Blackfin loader)
+ CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration
+ (169.254.*.*)
CONFIG_CMD_LOADB loadb
CONFIG_CMD_LOADS loads
CONFIG_CMD_MD5SUM print md5 message digest
@@ -814,7 +824,7 @@ The following options need to be configured:
CONFIG_CMD_TIME * run command and report execution time
CONFIG_CMD_USB * USB support
CONFIG_CMD_CDP * Cisco Discover Protocol support
- CONFIG_CMD_FSL * Microblaze FSL support
+ CONFIG_CMD_MFSL * Microblaze FSL support
EXAMPLE: If you want all functions except of network
@@ -1584,10 +1594,17 @@ The following options need to be configured:
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_DNS2 - If a DHCP client requests the DNS
serverip from a DHCP server, it is possible that more
than one DNS serverip is offered to the client.
@@ -1618,6 +1635,14 @@ The following options need to be configured:
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
+ for an address that doesn't require explicit configuration.
+ This is especially useful if a DHCP server cannot be guaranteed
+ to exist in all environments that the device must operate.
+
+ See doc/README.link-local for more information.
+
- CDP Options:
CONFIG_CDP_DEVICE_ID
@@ -3026,6 +3051,24 @@ to save the current settings.
environment area within the total memory of your DataFlash placed
at the specified address.
+- CONFIG_ENV_IS_IN_REMOTE:
+
+ Define this if you have a remote memory space which you
+ want to use for the local device's environment.
+
+ - CONFIG_ENV_ADDR:
+ - CONFIG_ENV_SIZE:
+
+ These two #defines specify the address and size of the
+ environment area within the remote memory space. The
+ local device can get the environment from remote memory
+ space by SRIO or other links.
+
+BE CAREFUL! For some special cases, the local device can not use
+"saveenv" command. For example, the local device will get the
+environment stored in a remote NOR flash by SRIO link, but it can
+not erase, write this NOR flash by SRIO interface.
+
- CONFIG_ENV_IS_IN_NAND:
Define this if you have a NAND device which you want to use
@@ -3462,6 +3505,12 @@ within that device.
Specifies that QE/FMAN firmware is located on the primary SPI
device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device.
+- CONFIG_SYS_QE_FMAN_FW_IN_REMOTE
+ Specifies that QE/FMAN firmware is located in the remote (master)
+ memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which
+ can be mapped from slave TLB->slave LAW->slave SRIO outbound window
+ ->master inbound window->master LAW->the ucode address in master's
+ NOR flash.
Building the Software:
======================