arm: relocate_code() is no longer noreturn

[karo-tx-uboot.git] / README

diff --git a/README b/README
index d51ece946c309a37fa3fcf5c1d91f0174e2b016f..9285ddda406ebb96e8517dd03904ba63bc28d9f9 100644 (file)
--- a/README
+++ b/README
@@ -485,6 +485,17 @@ The following options need to be configured:
                Thumb2 this flag will result in Thumb2 code generated by
                GCC.
 
+               CONFIG_ARM_ERRATA_716044
+               CONFIG_ARM_ERRATA_742230
+               CONFIG_ARM_ERRATA_743622
+               CONFIG_ARM_ERRATA_751472
+
+               If set, the workarounds for these ARM errata are applied early
+               during U-Boot startup. Note that these options force the
+               workarounds to be applied; no CPU-type/version detection
+               exists, unlike the similar options in the Linux kernel. Do not
+               set these options unless they apply!
+
 - Linux Kernel Interface:
                CONFIG_CLOCKS_IN_MHZ
 
@@ -616,14 +627,6 @@ The following options need to be configured:
                boot loader that has already initialized the UART.  Define this
                variable to flush the UART at init time.
 
-               CONFIG_SYS_NS16550_BROKEN_TEMT
-
-               16550 UART set the Transmitter Empty (TEMT) Bit when all output
-               has finished and the transmitter is totally empty. U-Boot waits
-               for this bit to be set to initialize the serial console. On some
-               broken platforms this bit is not set in SPL making U-Boot to
-               hang while waiting for TEMT. Define this option to avoid it.
-
 
 - Console Interface:
                Depending on board, define exactly one serial port
@@ -860,7 +863,8 @@ The following options need to be configured:
                                          (requires CONFIG_CMD_MEMORY and CONFIG_MD5)
                CONFIG_CMD_MEMINFO      * Display detailed memory information
                CONFIG_CMD_MEMORY         md, mm, nm, mw, cp, cmp, crc, base,
-                                         loop, loopw, mtest
+                                         loop, loopw
+               CONFIG_CMD_MEMTEST        mtest
                CONFIG_CMD_MISC           Misc functions like sleep etc
                CONFIG_CMD_MMC          * MMC memory mapped support
                CONFIG_CMD_MII          * MII utility commands
@@ -3230,6 +3234,23 @@ Configuration Settings:
        If defined, don't allow the -f switch to env set override variable
        access flags.
 
+- CONFIG_SYS_GENERIC_BOARD
+       This selects the architecture-generic board system instead of the
+       architecture-specific board files. It is intended to move boards
+       to this new framework over time. Defining this will disable the
+       arch/foo/lib/board.c file and use common/board_f.c and
+       common/board_r.c instead. To use this option your architecture
+       must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in
+       its config.mk file). If you find problems enabling this option on
+       your board please report the problem and send patches!
+
+- CONFIG_SYS_SYM_OFFSETS
+       This is set by architectures that use offsets for link symbols
+       instead of absolute values. So bss_start is obtained using an
+       offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than
+       directly. You should not need to touch this setting.
+
+
 The following definitions that deal with the placement and management
 of environment data (variable area); in general, we support the
 following configurations:
@@ -3734,9 +3755,13 @@ Low Level (hardware related) configuration options:
 - CONFIG_SYS_SRIOn_MEM_SIZE:
                Size of SRIO port 'n' memory region
 
-- CONFIG_SYS_NDFC_16
-               Defined to tell the NDFC that the NAND chip is using a
-               16 bit bus.
+- CONFIG_SYS_NAND_BUSWIDTH_16BIT
+               Defined to tell the NAND controller that the NAND chip is using
+               a 16 bit bus.
+               Not all NAND drivers use this symbol.
+               Example of drivers that use it:
+               - drivers/mtd/nand/ndfc.c
+               - drivers/mtd/nand/mxc_nand.c
 
 - CONFIG_SYS_NDFC_EBC0_CFG
                Sets the EBC0_CFG register for the NDFC. If not defined
@@ -3850,6 +3875,10 @@ Low Level (hardware related) configuration options:
                If defined, the x86 reset vector code is included. This is not
                needed when U-Boot is running from Coreboot.
 
+- CONFIG_SYS_MPUCLK
+               Defines the MPU clock speed (in MHz).
+
+               NOTE : currently only supported on AM335x platforms.
 
 Freescale QE/FMAN Firmware Support:
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