X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=README;h=dac46f35b2e337e98961b10ea087e112eb374cb2;hb=3c692f9706a1d85dc5fc518fa8503c1862f15088;hp=79016e690ace8899488e54ee7a35e1715018e9a2;hpb=05f132d74d173854df79bc5541699c3db144e42a;p=karo-tx-uboot.git

diff --git a/README b/README
index 79016e690a..dac46f35b2 100644
--- a/README
+++ b/README
@@ -374,6 +374,15 @@ The following options need to be configured:
 		Defines the string to utilize when trying to match PCIe device
 		tree nodes for the given platform.
 
+		CONFIG_SYS_PPC_E500_DEBUG_TLB
+
+		Enables a temporary TLB entry to be used during boot to work
+		around limitations in e500v1 and e500v2 external debugger
+		support. This reduces the portions of the boot code where
+		breakpoints and single stepping do not work.  The value of this
+		symbol should be set to the TLB1 entry to be used for this
+		purpose.
+
 - Generic CPU options:
 		CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN
 
@@ -432,6 +441,14 @@ 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 +794,8 @@ 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
@@ -1584,10 +1603,17 @@ 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 +1644,14 @@ 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
 
@@ -2195,6 +2229,20 @@ The following options need to be configured:
 		the environment like the "source" command or the
 		boot command first.
 
+		CONFIG_ENV_VARS_UBOOT_CONFIG
+
+		Define this in order to add variables describing the
+		U-Boot build configuration to the default environment.
+		These will be named arch, cpu, board, vendor, and soc.
+
+		Enabling this option will cause the following to be defined:
+
+		- CONFIG_SYS_ARCH
+		- CONFIG_SYS_CPU
+		- CONFIG_SYS_BOARD
+		- CONFIG_SYS_VENDOR
+		- CONFIG_SYS_SOC
+
 - DataFlash Support:
 		CONFIG_HAS_DATAFLASH