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
2.1 Motorola Coldfire MCF5272
-----------------------------
-CPU specific code is located in: cpu/mcf52x2
+CPU specific code is located in: arch/m68k/cpu/mcf52x2
2.1 Motorola Coldfire MCF5282
-----------------------------
-CPU specific code is located in: cpu/mcf52x2
+CPU specific code is located in: arch/m68k/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
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 CONFIG_SYS_TEXT_BASE in board/m5282evb/config.mk and CONFIG_SYS_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
----------------------------------
CONFIG_MONITOR_IS_IN_RAM must be defined. If it is defined the
initial vector table and basic processor initialization will not
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.
-
+the boards config header file (CONFIG_SYS_MONITOR_BASE) and Makefile
+(CONFIG_SYS_TEXT_BASE) to the load address.
4.1 MCF5272 specific Options/Settings
-------------------------------------
CONFIG_MONITOR_IS_IN_RAM
-- defined if u-boot is loaded by a pre-loader
-CFG_MBAR -- defines the base address of the MCF5272 configuration registers
-CFG_INIT_RAM_ADDR
+CONFIG_SYS_MBAR -- defines the base address of the MCF5272 configuration registers
+CONFIG_SYS_INIT_RAM_ADDR
-- defines the base address of the MCF5272 internal SRAM
-CFG_ENET_BD_BASE
- -- defines the base addres of the FEC buffer descriptors
+CONFIG_SYS_ENET_BD_BASE
+ -- defines the base address of the FEC buffer descriptors
-CFG_SCR -- defines the contents of the System Configuration Register
-CFG_SPR -- defines the contents of the System Protection Register
-CFG_BRx_PRELIM -- defines the contents of the Chip Select Base Registers
-CFG_ORx_PRELIM -- defines the contents of the Chip Select Option Registers
+CONFIG_SYS_SCR -- defines the contents of the System Configuration Register
+CONFIG_SYS_SPR -- defines the contents of the System Protection Register
+CONFIG_SYS_BRx_PRELIM -- defines the contents of the Chip Select Base Registers
+CONFIG_SYS_ORx_PRELIM -- defines the contents of the Chip Select Option Registers
-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
+CONFIG_SYS_PxDDR -- defines the contents of the Data Direction Registers
+CONFIG_SYS_PxDAT -- defines the contents of the Data Registers
+CONFIG_SYS_PXCNT -- defines the contents of the Port Configuration Registers
4.2 MCF5282 specific Options/Settings
CONFIG_MONITOR_IS_IN_RAM
-- defined if u-boot is loaded by a pre-loader
-CFG_MBAR -- defines the base address of the MCF5282 internal register space
-CFG_INIT_RAM_ADDR
+CONFIG_SYS_MBAR -- defines the base address of the MCF5282 internal register space
+CONFIG_SYS_INIT_RAM_ADDR
-- defines the base address of the MCF5282 internal SRAM
-CFG_INT_FLASH_BASE
+CONFIG_SYS_INT_FLASH_BASE
-- defines the base address of the MCF5282 internal Flash memory
-CFG_ENET_BD_BASE
- -- defines the base addres of the FEC buffer descriptors
+CONFIG_SYS_ENET_BD_BASE
+ -- defines the base address of the FEC buffer descriptors
+
+CONFIG_SYS_MFD
+ -- defines the PLL Multiplication Factor Devider
+ (see table 9-4 of MCF user manual)
+CONFIG_SYS_RFD -- defines the PLL Reduce Frecuency Devider
+ (see table 9-4 of MCF user manual)
+
+CONFIG_SYS_CSx_BASE -- defines the base address of chip select x
+CONFIG_SYS_CSx_SIZE -- defines the memory size (address range) of chip select x
+CONFIG_SYS_CSx_WIDTH -- defines the bus with of chip select x
+CONFIG_SYS_CSx_RO -- if set to 0 chip select x is read/wirte
+ else chipselct is read only
+CONFIG_SYS_CSx_WS -- defines the number of wait states of chip select x
+
+CONFIG_SYS_PxDDR -- defines the contents of the Data Direction Registers
+CONFIG_SYS_PxDAT -- defines the contents of the Data Registers
+CONFIG_SYS_PXCNT -- defines the contents of the Port Configuration Registers
+
+CONFIG_SYS_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>
projects / karo-tx-uboot.git / blobdiff