sandbox: config: enable fdt and snprintf() options

[u-boot] / README

diff --git a/README b/README
index eba6378536858da57d307e6f7d9721930b00f782..89646725a0b884c5b8b10e4262a1682478788a29 100644 (file)
--- a/README
+++ b/README
@@ -3665,6 +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.
 
   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
                  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