X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=README;h=dfc7ada61e1e9cc418f3fd8f8648b0382ac000fa;hb=212a0cafad08b170d25a93dfd350b7ecdb033660;hp=a43da97a4149db3bf9cea0a1b9e02ef69eee9802;hpb=04e5ae793153e74d682f2d0e297e58fd75366c8f;p=platform%2Fkernel%2Fu-boot.git

diff --git a/README b/README
index a43da97..dfc7ada 100644
--- a/README
+++ b/README
@@ -619,6 +619,20 @@ The following options need to be configured:
 		must be defined, to setup the maximum idle timeout for
 		the SMC.
 
+- Pre-Console Buffer:
+                Prior to the console being initialised (i.e. serial UART
+                initialised etc) all console output is silently discarded.
+                Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to
+                buffer any console messages prior to the console being
+                initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ
+                bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is
+                a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ
+                bytes are output before the console is  initialised, the
+                earlier bytes are discarded.
+
+                'Sane' compilers will generate smaller code if
+                CONFIG_PRE_CON_BUF_SZ is a power of 2
+
 - Boot Delay:	CONFIG_BOOTDELAY - in seconds
 		Delay before automatically booting the default image;
 		set to -1 to disable autoboot.
@@ -2862,6 +2876,43 @@ Low Level (hardware related) configuration options:
 		and RPXsuper) to be able to adjust the position of
 		the IMMR register after a reset.
 
+- CONFIG_SYS_CCSRBAR_DEFAULT:
+		Default (power-on reset) physical address of CCSR on Freescale
+		PowerPC SOCs.
+
+- CONFIG_SYS_CCSRBAR:
+		Virtual address of CCSR.  On a 32-bit build, this is typically
+		the same value as CONFIG_SYS_CCSRBAR_DEFAULT.
+
+		CONFIG_SYS_DEFAULT_IMMR must also be set to this value,
+		for cross-platform code that uses that macro instead.
+
+- CONFIG_SYS_CCSRBAR_PHYS:
+		Physical address of CCSR.  CCSR can be relocated to a new
+		physical address, if desired.  In this case, this macro should
+		be set to that address.  Otherwise, it should be set to the
+		same value as CONFIG_SYS_CCSRBAR_DEFAULT.  For example, CCSR
+		is typically relocated on 36-bit builds.  It is recommended
+		that this macro be defined via the _HIGH and _LOW macros:
+
+		#define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH
+			* 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW)
+
+- CONFIG_SYS_CCSRBAR_PHYS_HIGH:
+		Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS.  This value is typically
+		either 0 (32-bit build) or 0xF (36-bit build).  This macro is
+		used in assembly code, so it must not contain typecasts or
+		integer size suffixes (e.g. "ULL").
+
+- CONFIG_SYS_CCSRBAR_PHYS_LOW:
+		Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS.  This macro is
+		used in assembly code, so it must not contain typecasts or
+		integer size suffixes (e.g. "ULL").
+
+- CONFIG_SYS_CCSR_DO_NOT_RELOCATE:
+		If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be
+		forced to a value that ensures that CCSR is not relocated.
+
 - Floppy Disk Support:
 		CONFIG_SYS_FDC_DRIVE_NUMBER