Add zero-copy ramdisk support (requires corresponding kernel support!)

[karo-tx-uboot.git] / README

diff --git a/README b/README
index 1deb82cbd6aa4e8915c1ac0f003ede3948ab9b9b..ecc087ad914b20afd6ad63008a780ffe23629ca0 100644 (file)
--- a/README
+++ b/README
@@ -343,7 +343,8 @@ The following options need to be configured:
                CONFIG_GTH,        CONFIG_RPXClassic, CONFIG_rsdproto,
                CONFIG_IAD210,     CONFIG_RPXlite,    CONFIG_sbc8260,
                CONFIG_EBONY,      CONFIG_sacsng,     CONFIG_FPS860L,
-               CONFIG_V37,        CONFIG_ELPT860,    CONFIG_CMI
+               CONFIG_V37,        CONFIG_ELPT860,    CONFIG_CMI,
+               CONFIG_NETVIA
 
                ARM based boards:
                -----------------
@@ -469,6 +470,13 @@ The following options need to be configured:
                Set to 0 to disable this feature (this is the default).
                This will also disable hardware handshake.
 
+- Console UART Number:
+               CONFIG_UART1_CONSOLE
+
+               IBM PPC4xx only.
+               If defined internal UART1 (and not UART0) is used
+               as default U-Boot console.
+
 - Boot Delay:  CONFIG_BOOTDELAY - in seconds
                Delay before automatically booting the default image;
                set to -1 to disable autoboot.
@@ -638,6 +646,7 @@ The following options need to be configured:
                CONFIG_RTC_MC146818     - use MC146818 RTC
                CONFIG_RTC_DS1307       - use Maxim, Inc. DS1307 RTC
                CONFIG_RTC_DS1337       - use Maxim, Inc. DS1337 RTC
+               CONFIG_RTC_DS1338       - use Maxim, Inc. DS1338 RTC
                CONFIG_RTC_DS164x       - use Dallas DS164x RTC
 
 - Timestamp Support:
@@ -695,6 +704,18 @@ The following options need to be configured:
                CONFIG_NS8382X
                Support for National dp8382[01] gigabit chips.
 
+- NETWORK Support (other):
+
+               CONFIG_DRIVER_LAN91C96
+               Support for SMSC's LAN91C96 chips.
+
+                       CONFIG_LAN91C96_BASE
+                       Define this to hold the physical address
+                       of the LAN91C96's I/O space
+
+                       CONFIG_LAN91C96_USE_32_BIT
+                       Define this to enable 32 bit addressing
+
 - USB Support:
                At the moment only the UHCI host controller is
                supported (PIP405, MIP405); define
@@ -1696,6 +1717,16 @@ Low Level (hardware related) configuration options:
                #define'd default value in commproc.h resp.
                cpm_8260.h.
 
+- CFG_PCI_SLV_MEM_LOCAL, CFG_PCI_SLV_MEM_BUS, CFG_PICMR0_MASK_ATTRIB,
+  CFG_PCI_MSTR0_LOCAL, CFG_PCIMSK0_MASK, CFG_PCI_MSTR1_LOCAL,
+  CFG_PCIMSK1_MASK, CFG_PCI_MSTR_MEM_LOCAL, CFG_PCI_MSTR_MEM_BUS,
+  CFG_CPU_PCI_MEM_START, CFG_PCI_MSTR_MEM_SIZE, CFG_POCMR0_MASK_ATTRIB,
+  CFG_PCI_MSTR_MEMIO_LOCAL, CFG_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START,
+  CFG_PCI_MSTR_MEMIO_SIZE, CFG_POCMR1_MASK_ATTRIB, CFG_PCI_MSTR_IO_LOCAL,
+  CFG_PCI_MSTR_IO_BUS, CFG_CPU_PCI_IO_START, CFG_PCI_MSTR_IO_SIZE,
+  CFG_POCMR2_MASK_ATTRIB: (MPC826x only)
+               Overrides the default PCI memory map in cpu/mpc8260/pci.c if set.
+
 Building the Software:
 ======================
 
@@ -1738,7 +1769,7 @@ configurations; the following names are supported:
     FPS850L_config       Sandpoint8240_config  sbc8260_config
     GENIETV_config       TQM823L_config        PIP405_config
     GEN860T_config       EBONY_config          FPS860L_config
-    ELPT860_config       cmi_mpc5xx_config
+    ELPT860_config       cmi_mpc5xx_config     NETVIA_config
 
 Note: for some board special configuration names may exist; check  if
       additional  information is available from the board vendor; for
@@ -1957,6 +1988,14 @@ Some configuration options can be set using Environment Variables:
 
                  setenv initrd_high 00c00000
 
+                  If you set initrd_high to 0xFFFFFFFF, this is an
+                  indication to U-Boot that all addresses are legal
+                  for the Linux kernel, including addresses in flash
+                  memory. In this case U-Boot will NOT COPY the
+                  ramdisk at all. This may be useful to reduce the
+                  boot time on your system, but requires that this
+                  feature is supported by your Linux kernel.
+
   ipaddr       - IP address; needed for tftpboot command
 
   loadaddr     - Default load address for commands like "bootp",
@@ -2054,8 +2093,8 @@ defines the following image properties:
 
 * Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD,
   4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks,
-  LynxOS, pSOS, QNX;
-  Currently supported: Linux, NetBSD, VxWorks, QNX).
+  LynxOS, pSOS, QNX, RTEMS, ARTOS;
+  Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, ARTOS).
 * Target CPU Architecture (Provisions for Alpha, ARM, Intel x86,
   IA64, MIPS, MIPS, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit;
   Currently supported: PowerPC).