powerpc/km82xx: fix compile issue for mgcoge2ne

[karo-tx-uboot.git] / README

diff --git a/README b/README
index 85cbb8e02147a3ccfd848440a6dcbd709a5dffff..76b150005f8d1f63ea36fd92e02c06411fdb3eda 100644 (file)
--- a/README
+++ b/README
@@ -356,6 +356,13 @@ The following options need to be configured:
                Define this option if you want to enable the
                ICache only when Code runs from RAM.
 
+- 85xx CPU Options:
+               CONFIG_SYS_FSL_TBCLK_DIV
+
+               Defines the core time base clock divider ratio compared to the
+               system clock.  On most PQ3 devices this is 8, on newer QorIQ
+               devices it can be 16 or 32.  The ratio varies from SoC to Soc.
+
 - Intel Monahans options:
                CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO
 
@@ -646,6 +653,7 @@ The following options need to be configured:
                CONFIG_CMD_FLASH          flinfo, erase, protect
                CONFIG_CMD_FPGA           FPGA device initialization support
                CONFIG_CMD_GO           * the 'go' command (exec code)
+               CONFIG_CMD_GREPENV      * search environment
                CONFIG_CMD_HWFLOW       * RTS/CTS hw flow control
                CONFIG_CMD_I2C          * I2C serial bus support
                CONFIG_CMD_IDE          * IDE harddisk support
@@ -1095,13 +1103,10 @@ The following options need to be configured:
                        CONFIG_VIDEO_LOGO
                        CONFIG_VIDEO_BMP_LOGO
 
-               The DIU driver will look for the 'monitor' environment variable,
-               and if defined, enable the DIU as a console during boot.  This
-               variable should be set to one of these values:
-
-                       '0'     Output video to the DVI connector
-                       '1'     Output video to the LVDS connector
-                       '2'     Output video to the Dual-Link LVDS connector
+               The DIU driver will look for the 'video-mode' environment
+               variable, and if defined, enable the DIU as a console during
+               boot.  See the documentation file README.video for a
+               description of this variable.
 
 - Keyboard Support:
                CONFIG_KEYBOARD
@@ -2011,6 +2016,20 @@ The following options need to be configured:
                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
@@ -2348,7 +2367,10 @@ Configuration Settings:
                used) must be put below this limit, unless "bootm_low"
                enviroment variable is defined and non-zero. In such case
                all data for the Linux kernel must be between "bootm_low"
-               and "bootm_low" + CONFIG_SYS_BOOTMAPSZ.
+               and "bootm_low" + CONFIG_SYS_BOOTMAPSZ.  The environment
+               variable "bootm_mapsize" will override the value of
+               CONFIG_SYS_BOOTMAPSZ.  If CONFIG_SYS_BOOTMAPSZ is undefined,
+               then the value in "bootm_size" will be used instead.
 
 - CONFIG_SYS_BOOT_RAMDISK_HIGH:
                Enable initrd_high functionality.  If defined then the
@@ -2736,6 +2758,14 @@ Low Level (hardware related) configuration options:
                source code. It is used to make hardware dependant
                initializations.
 
+- CONFIG_IDE_AHB:
+               Most IDE controllers were designed to be connected with PCI
+               interface. Only few of them were designed for AHB interface.
+               When software is doing ATA command and data transfer to
+               IDE devices through IDE-AHB controller, some additional
+               registers accessing to these kind of IDE-AHB controller
+               is requierd.
+
 - CONFIG_SYS_IMMR:     Physical address of the Internal Memory.
                DO NOT CHANGE unless you know exactly what you're
                doing! (11-4) [MPC8xx/82xx systems only]
@@ -3190,7 +3220,16 @@ List of environment variables (most likely not complete):
                  for use by the bootm command. See also "bootm_size"
                  environment variable. Address defined by "bootm_low" is
                  also the base of the initial memory mapping for the Linux
-                 kernel -- see the description of CONFIG_SYS_BOOTMAPSZ.
+                 kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and
+                 bootm_mapsize.
+
+  bootm_mapsize        - Size of the initial memory mapping for the Linux kernel.
+                 This variable is given as a hexadecimal number and it
+                 defines the size of the memory region starting at base
+                 address bootm_low that is accessible by the Linux kernel
+                 during early boot.  If unset, CONFIG_SYS_BOOTMAPSZ is used
+                 as the default value if it is defined, and bootm_size is
+                 used otherwise.
 
   bootm_size   - Memory range available for image processing in the bootm
                  command can be restricted. This variable is given as