README: fix documentation of CONFIG_SHOW_BOOT_PROGRESS

[platform/kernel/u-boot.git] / README

diff --git a/README b/README
index 91b6695..e0a4d53 100644 (file)
--- 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.
@@ -2094,28 +2108,6 @@ The following options need to be configured:
                example, some LED's) on your board. At the moment,
                the following checkpoints are implemented:
 
-- Standalone program support:
-               CONFIG_STANDALONE_LOAD_ADDR
-
-               This option allows to define board specific values
-               for the address where standalone program gets loaded,
-               thus overwriting the architecutre dependent default
-               settings.
-
-- Frame Buffer Address:
-       CONFIG_FB_ADDR
-
-       Define CONFIG_FB_ADDR if you want to use specific address for
-       frame buffer.
-       Then system will reserve the frame buffer address to defined address
-       instead of lcd_setmem (this function grab the memory for frame buffer
-       by panel's size).
-
-       Please see board_init_f function.
-
-       If you want this config option then,
-       please define it at your board config file
-
 Legacy uImage format:
 
   Arg  Where                   When
@@ -2269,6 +2261,28 @@ FIT uImage format:
  -150  common/cmd_nand.c       Incorrect FIT image format
   151  common/cmd_nand.c       FIT image format OK
 
+- Standalone program support:
+               CONFIG_STANDALONE_LOAD_ADDR
+
+               This option allows to define board specific values
+               for the address where standalone program gets loaded,
+               thus overwriting the architecutre dependent default
+               settings.
+
+- Frame Buffer Address:
+               CONFIG_FB_ADDR
+
+               Define CONFIG_FB_ADDR if you want to use specific
+               address for frame buffer.
+               Then system will reserve the frame buffer address to
+               defined address instead of lcd_setmem (this function
+               grab the memory for frame buffer by panel's size).
+
+               Please see board_init_f function.
+
+               If you want this config option then,
+               please define it at your board config file
+
 - Automatic software updates via TFTP server
                CONFIG_UPDATE_TFTP
                CONFIG_UPDATE_TFTP_CNT_MAX
@@ -2885,8 +2899,8 @@ Low Level (hardware related) configuration options:
                        * 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
+               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").
 
@@ -3497,12 +3511,10 @@ List of environment variables (most likely not complete):
 
   bootstopkey  - see CONFIG_AUTOBOOT_STOP_STR
 
-  ethprime     - When CONFIG_NET_MULTI is enabled controls which
-                 interface is used first.
+  ethprime     - controls which interface is used first.
 
-  ethact       - When CONFIG_NET_MULTI is enabled controls which
-                 interface is currently active. For example you
-                 can do the following
+  ethact       - controls which interface is currently active.
+                 For example you can do the following
 
                  => setenv ethact FEC
                  => ping 192.168.0.1 # traffic sent on FEC