ATMEL: remove old atmel_mci driver

[people/ms/u-boot.git] / README

diff --git a/README b/README
index 52cf37c1f80315969ef50b8ee6f10e95013778c6..89646725a0b884c5b8b10e4262a1682478788a29 100644 (file)
--- a/README
+++ b/README
@@ -420,6 +420,12 @@ The following options need to be configured:
                XWAY SoCs for booting from NOR flash. The U-Boot image needs to
                be swapped if a flash programmer is used.
 
+- ARM options:
+               CONFIG_SYS_EXCEPTION_VECTORS_HIGH
+
+               Select high exception vectors of the ARM core, e.g., do not
+               clear the V bit of the c1 register of CP15.
+
 - Linux Kernel Interface:
                CONFIG_CLOCKS_IN_MHZ
 
@@ -3659,6 +3665,14 @@ List of environment variables (most likely not complete):
 
   fdt_high     - if set this restricts the maximum address that the
                  flattened device tree will be copied into upon boot.
+                 For example, if you have a system with 1 GB memory
+                 at physical address 0x10000000, while Linux kernel
+                 only recognizes the first 704 MB as low memory, you
+                 may need to set fdt_high as 0x3C000000 to have the
+                 device tree blob be copied to the maximum address
+                 of the 704 MB low memory, so that Linux kernel can
+                 access it during the boot procedure.
+
                  If this is set to the special value 0xFFFFFFFF then
                  the fdt will not be copied at all on boot.  For this
                  to work it must reside in writable memory, have