* Patch by Jon Loeliger, 2005-07-25

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

diff --git a/README b/README
index 6cc7405512ee64f034ebd9b24ee9b4d16e7c13df..c52ccbd9db3ce074b32c981c6edc9536bdd11456 100644 (file)
--- a/README
+++ b/README
@@ -126,12 +126,12 @@ Directory Hierarchy:
   - 74xx_7xx   Files specific to Freescale MPC74xx and 7xx CPUs
   - arm720t    Files specific to ARM 720 CPUs
   - arm920t    Files specific to ARM 920 CPUs
   - 74xx_7xx   Files specific to Freescale MPC74xx and 7xx CPUs
   - arm720t    Files specific to ARM 720 CPUs
   - arm920t    Files specific to ARM 920 CPUs

+    - at91rm9200 Files specific to Atmel AT91RM9200 CPU

     - imx      Files specific to Freescale MC9328 i.MX CPUs
     - s3c24x0  Files specific to Samsung S3C24X0 CPUs
   - arm925t    Files specific to ARM 925 CPUs
   - arm926ejs  Files specific to ARM 926 CPUs
   - arm1136    Files specific to ARM 1136 CPUs
     - imx      Files specific to Freescale MC9328 i.MX CPUs
     - s3c24x0  Files specific to Samsung S3C24X0 CPUs
   - arm925t    Files specific to ARM 925 CPUs
   - arm926ejs  Files specific to ARM 926 CPUs
   - arm1136    Files specific to ARM 1136 CPUs

-  - at91rm9200 Files specific to Atmel AT91RM9200 CPUs

   - i386       Files specific to i386 CPUs
   - ixp                Files specific to Intel XScale IXP CPUs
   - mcf52x2    Files specific to Freescale ColdFire MCF52x2 CPUs
   - i386       Files specific to i386 CPUs
   - ixp                Files specific to Intel XScale IXP CPUs
   - mcf52x2    Files specific to Freescale ColdFire MCF52x2 CPUs


@@ -627,6 +627,7 @@ The following options need to be configured:
                CFG_CMD_SAVES   * save S record dump
                CFG_CMD_SCSI    * SCSI Support
                CFG_CMD_SDRAM   * print SDRAM configuration information
                CFG_CMD_SAVES   * save S record dump
                CFG_CMD_SCSI    * SCSI Support
                CFG_CMD_SDRAM   * print SDRAM configuration information

+                                 (requires CFG_CMD_I2C)

                CFG_CMD_SETGETDCR Support for DCR Register access (4xx only)
                CFG_CMD_SPI     * SPI serial bus support
                CFG_CMD_USB     * USB support
                CFG_CMD_SETGETDCR Support for DCR Register access (4xx only)
                CFG_CMD_SPI     * SPI serial bus support
                CFG_CMD_USB     * USB support


@@ -2128,14 +2129,18 @@ Low Level (hardware related) configuration options:
                This only takes effect if the memory commands are activated
                globally (CFG_CMD_MEM).
 
                This only takes effect if the memory commands are activated
                globally (CFG_CMD_MEM).
 

-- CONFIG_INIT_CRITICAL
-                [ARM only] If this variable is NOT defined, then
-                certain critical initializations (like setting up the
-                memory controller) are omitted. Normally this
-                variable MUST be defined for all boards. The only
-                exception is when U-Boot is loaded (to RAM) by some
-                other boot loader or by a debugger which performs
-                these intializations itself.
+- CONFIG_SKIP_LOWLEVEL_INIT
+- CONFIG_SKIP_RELOCATE_UBOOT
+
+               [ARM only] If these variables are defined, then
+               certain low level initializations (like setting up
+               the memory controller) are omitted and/or U-Boot does
+               not relocate itself into RAM.
+               Normally these variables MUST NOT be defined. The
+               only exception is when U-Boot is loaded (to RAM) by
+               some other boot loader or by a debugger which
+               performs these intializations itself.
+

 
 Building the Software:
 ======================
 
 Building the Software:
 ======================


@@ -3076,8 +3081,7 @@ Booting assumes that (the first part of) the image booted is a
 stage-2 loader which in turn loads and then invokes the kernel
 proper. Loader sources will eventually appear in the NetBSD source
 tree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the
 stage-2 loader which in turn loads and then invokes the kernel
 proper. Loader sources will eventually appear in the NetBSD source
 tree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the

-meantime, send mail to bruno@exet-ag.de and/or wd@denx.de for
-details.
+meantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz

 
 
 Implementation Internals:
 
 
 Implementation Internals:


@@ -3377,6 +3381,7 @@ Since the number of patches for U-Boot is growing, we need to
 establish some rules. Submissions which do not conform to these rules
 may be rejected, even when they contain important and valuable stuff.
 
 establish some rules. Submissions which do not conform to these rules
 may be rejected, even when they contain important and valuable stuff.
 

+Patches shall be sent to the u-boot-users mailing list.

 
 When you send a patch, please include the following information with
 it:
 
 When you send a patch, please include the following information with
 it:


@@ -3434,3 +3439,6 @@ Notes:
   (using #ifdef), and the resulting code with the new feature
   disabled must not need more memory than the old code without your
   modification.
   (using #ifdef), and the resulting code with the new feature
   disabled must not need more memory than the old code without your
   modification.

+
+* Remember that there is a size limit of 40 kB per message on the
+  u-boot-users mailing list. Compression may help.