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Add MCF5282 support (without preloader)

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relocate ichache_State to ram
u-boot can run from internal flash
Add EB+MCF-EV123 board support.
Add m68k Boards to MAKEALL
Patch from Jens Scharsig, 08 Aug 2005
This commit is contained in:
Heiko Schocher
2006-04-20 08:42:42 +02:00
parent 8419c01304
commit 9acb626fc1
23 changed files with 2420 additions and 102 deletions
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doc/README.m68k
+48 -18
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@@ -1,7 +1,12 @@
U-Boot for Motorola M68K
Last Update: January 12, 2004
====================================================================
History
August 08,2005; Jens Scharsig <esw@bus-elektronik.de>
MCF5282 implementation without preloader
January 12, 2004; <josef.baumgartner@telex.de>
====================================================================
This file contains status information for the port of U-Boot to the
@@ -33,16 +38,8 @@ CPU specific code is located in: cpu/mcf52x2
-----------------------------
CPU specific code is located in: cpu/mcf52x2
At the moment the code isn't fully implemented and still needs a pre-loader!
The preloader must initialize the processor and then start u-boot. The board
must be configured for a pre-loader (see 4.1)
For the preloader, please see
http://mailman.uclinux.org/pipermail/uclinux-dev/2003-December/023384.html
U-boot is configured to run at 0x20000 at default. This can be configured by
change TEXT_BASE in board/m5282evb/config.mk and CFG_MONITOR_BASE in
include/configs/M5282EVB.h.
The MCF5282 Port no longer needs a preloader and can place in external or
internal FLASH.
3. SUPPORTED BOARDs
@@ -67,6 +64,27 @@ Board specific code is located in: board/m5282evb
To configure the board, type: make M5272C3_config
At the moment the code isn't fully implemented and still needs a pre-loader!
The preloader must initialize the processor and then start u-boot. The board
must be configured for a pre-loader (see 4.1)
For the preloader, please see
http://mailman.uclinux.org/pipermail/uclinux-dev/2003-December/023384.html
U-boot is configured to run at 0x20000 at default. This can be configured by
change TEXT_BASE in board/m5282evb/config.mk and CFG_MONITOR_BASE in
include/configs/M5282EVB.h.
3.2 BuS EB+MCF-EV123
---------------------
Board specific code is located in: board/bus/EB+MCF-EV123
To configure the board, type:
make EB+MCF-EV123_config for external FLASH
make EB+MCF-EV123_internal_config for internal FLASH
4. CONFIGURATION OPTIONS/SETTINGS
----------------------------------
@@ -80,7 +98,6 @@ be compiled in. The start address of u-boot must be adjusted in
the boards config header file (CFG_MONITOR_BASE) and Makefile
(TEXT_BASE) to the load address.
4.1 MCF5272 specific Options/Settings
-------------------------------------
@@ -123,14 +140,27 @@ CFG_INT_FLASH_BASE
CFG_ENET_BD_BASE
-- defines the base addres of the FEC buffer descriptors
CFG_MFD
-- defines the PLL Multiplication Factor Devider
(see table 9-4 of MCF user manual)
CFG_RFD -- defines the PLL Reduce Frecuency Devider
(see table 9-4 of MCF user manual)
CFG_CSx_BASE -- defines the base address of chip select x
CFG_CSx_SIZE -- defines the memory size (address range) of chip select x
CFG_CSx_WIDTH -- defines the bus with of chip select x
CFG_CSx_RO -- if set to 0 chip select x is read/wirte
else chipselct is read only
CFG_CSx_WS -- defines the number of wait states of chip select x
CFG_PxDDR -- defines the contents of the Data Direction Registers
CFG_PxDAT -- defines the contents of the Data Registers
CFG_PXCNT -- defines the contents of the Port Configuration Registers
CFG_PxPAR -- defines the function of ports
5. COMPILER
-----------
To create U-Boot the gcc-2.95.3 compiler set (m68k-elf-20030314) from uClinux.org was used.
You can download it from: http://www.uclinux.org/pub/uClinux/m68k-elf-tools/
Regards,
Josef
<josef.baumgartner@telex.de>