====================================================================
History
-August 08,2005; Jens Scharsig <esw@bus-elektronik.de>
+August 08,2005; Jens Scharsig <esw@bus-elektronik.de>
MCF5282 implementation without preloader
-January 12, 2004; <josef.baumgartner@telex.de>
+January 12, 2004; <josef.baumgartner@telex.de>
====================================================================
This file contains status information for the port of U-Boot to the
Bernhard Kuhn ported U-Boot 0.4.0 to the Motorola Coldfire
architecture. The patches of Bernhard support the MCF5272 and
MCF5282. A great disadvantage of these patches was that they needed
-a pre-bootloader to start u-boot. Because of this, a new port was
+a pre-bootloader to start U-Boot. Because of this, a new port was
created which no longer needs a first stage booter.
Although this port is intended to cover all M68k processors, only
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
The MCF5282 Port no longer needs a preloader and can place in external or
internal FLASH.
U-Boot Memory Map:
------------------
-0xffe00000 - 0xffe3ffff u-boot
-0xffe04000 - 0xffe05fff environment (embedded in u-boot!)
+0xffe00000 - 0xffe3ffff U-Boot
+0xffe04000 - 0xffe05fff environment (embedded in U-Boot!)
0xffe40000 - 0xffffffff free for linux/applications
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
+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
+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
To configure the board, type:
-make EB+MCF-EV123_config for external FLASH
-make EB+MCF-EV123_internal_config for internal FLASH
+make EB+MCF-EV123_config for external FLASH
+make EB+MCF-EV123_internal_config for internal FLASH
4. CONFIGURATION OPTIONS/SETTINGS
4.1 Configuration to use a pre-loader
-------------------------------------
-If u-boot should be loaded to RAM and started by a pre-loader
+If U-Boot should be loaded to RAM and started by a pre-loader
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.
+be compiled in. The start address of U-Boot must be adjusted in
+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_M5272 -- defined for all Motorola MCF5272 CPUs
CONFIG_MONITOR_IS_IN_RAM
- -- defined if u-boot is loaded by a pre-loader
+ -- 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_M5282 -- defined for all Motorola MCF5282 CPUs
CONFIG_MONITOR_IS_IN_RAM
- -- defined if u-boot is loaded by a pre-loader
+ -- 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
-CFG_MFD
+CONFIG_SYS_MFD
-- defines the PLL Multiplication Factor Devider
(see table 9-4 of MCF user manual)
-CFG_RFD -- defines the PLL Reduce Frecuency Devider
+CONFIG_SYS_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
+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
-CFG_CSx_WS -- defines the number of wait states of chip select x
+CONFIG_SYS_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
+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
-CFG_PxPAR -- defines the function of ports
+CONFIG_SYS_PxPAR -- defines the function of ports
5. COMPILER
projects / J-u-boot.git / blobdiff