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diff --git a/qemu/roms/u-boot/board/freescale/mpc8349itx/README b/qemu/roms/u-boot/board/freescale/mpc8349itx/README deleted file mode 100644 index 48bbd5035..000000000 --- a/qemu/roms/u-boot/board/freescale/mpc8349itx/README +++ /dev/null @@ -1,187 +0,0 @@ -Freescale MPC8349E-mITX and MPC8349E-mITX-GP Boards ---------------------------------------------------- - -1. Board Description - - The MPC8349E-mITX and MPC8349E-mITX-GP are reference boards featuring - the Freescale MPC8349E processor in a Mini-ITX form factor. - - The MPC8349E-mITX-GP is an MPC8349E-mITX with the following differences: - - A) One 8MB on-board flash EEPROM chip, instead of two. - B) No SATA controller - C) No Compact Flash slot - D) No Mini-PCI slot - E) No Vitesse 7385 5-port Ethernet switch - F) No 4-port USB Type-A interface - -2. Board Switches and Jumpers - -2.0 Descriptions for all of the board jumpers can be found in the User - Guide. Of particular interest to U-Boot developers is jumper J22: - - Pos. Name Default Description - ----------------------------------------------------------------------- - A LGPL0 ON (0) HRCW source, bit 0 - B LGPL1 ON (0) HRCW source, bit 1 - C LGPL3 ON (0) HRCW source, bit 2 - D LGPL5 OFF (1) PCI_SYNC_OUT frequency - E BOOT1 ON (0) Flash EEPROM boot device - F PCI_M66EN ON (0) PCI 66MHz enable - G I2C-WP ON (0) I2C EEPROM write protection - H F_WP OFF (1) Flash EEPROM write protection - - Jumper J22.E is only for the ITX, and it decides the configuration - of the flash chips. If J22.E is ON (i.e. jumpered), then flash chip - U4 is located at address FE000000 and flash chip U7 is at FE800000. - If J22.E is OFF, then U7 is at FE000000 and U4 is at FE800000. - - For U-Boot development, J22.E can be used to switch back-and-forth - between two U-Boot images. - -3. Memory Map - -3.1. The memory map should look pretty much like this: - - 0x0000_0000 - 0x0FFF_FFFF DDR SDRAM (256 MB) - 0x8000_0000 - 0x9FFF_FFFF PCI1 memory space (512 MB) - 0xA000_0000 - 0xBFFF_FFFF PCI2 memory space (512 MB) - 0xE000_0000 - 0xEFFF_FFFF IMMR (1 MB) - 0xE200_0000 - 0xE2FF_FFFF PCI1 I/O space (16 MB) - 0xE300_0000 - 0xE3FF_FFFF PCI2 I/O space (16 MB) - 0xF000_0000 - 0xF000_FFFF Compact Flash (ITX only) - 0xF001_0000 - 0xF001_FFFF Local bus expansion slot - 0xF800_0000 - 0xF801_FFFF Vitesse 7385 Parallel Interface (ITX only) - 0xFE00_0000 - 0xFE7F_FFFF First 8MB bank of Flash memory - 0xFE80_0000 - 0xFEFF_FFFF Second 8MB bank of Flash memory (ITX only) - -3.2 Flash EEPROM layout. - - On the ITX, jumper J22.E is used to determine which flash chips are - at which address. When J22.E is switched, addresses from FE000000 - to FE7FFFFF are swapped with addresses from FE800000 to FEFFFFFF. - - On the ITX, at the normal boot address (aka HIGHBOOT): - - FE00_0000 HRCW - FE70_0000 Alternative U-Boot image - FE80_0000 Alternative HRCW - FEF0_0000 U-Boot image - FEFF_FFFF End of flash - - On the ITX, at the low boot address (LOWBOOT) - - FE00_0000 HRCW and U-Boot image - FE04_0000 U-Boot environment variables - FE80_0000 Alternative HRCW and U-Boot image - FEFF_FFFF End of flash - - On the ITX-GP, the only option is LOWBOOT and there is only one chip - - FE00_0000 HRCW and U-Boot image - FE04_0000 U-Boot environment variables - F7FF_FFFF End of flash - -4. Definitions - -4.1 Explanation of NEW definitions in: - - include/configs/MPC8349ITX.h - - CONFIG_MPC83xx MPC83xx family - CONFIG_MPC8349 MPC8349 specific - CONFIG_MPC8349ITX MPC8349E-mITX - CONFIG_MPC8349ITXGP MPC8349E-mITX-GP - -5. Compilation - - Assuming you're using BASH shell: - - export CROSS_COMPILE=your-cross-compile-prefix - cd u-boot - make distclean - - make MPC8349ITX_config - or: - make MPC8349ITXGP_config - or: - make MPC8349ITX_LOWBOOT_config - - make - -6. Downloading and Flashing Images - -6.1 Download via tftp: - - tftp $loadaddr <uboot> - - where "<uboot>" is the path and filename, on the TFTP server, of - the U-Boot image. - -6.1 Reflash U-Boot Image using U-Boot - - setenv uboot <uboot> - run tftpflash - - where "<uboot>" is the path and filename, on the TFTP server, of - the U-Boot image. - -6.2 Using the HRCW to switch between two different U-Boot images on the ITX - - Because the ITX has 16MB of flash, it is possible to keep two U-Boot - images in flash, and use the HRCW to specify which one is to be used - when the board boots. This trick is especially effective with a - hardware debugger that can override the HRCW, such as the BDI-2000. - - When the BMS bit in the HRCW is 0, the ITX will boot the U-Boot image - at address FE000000. When the BMS bit is 1, the ITX will boot the - image at address FEF00000. - - Therefore, just put a U-Boot image at both FE000000 and FEF00000 and - change the BMS bit whenever you want to boot the other image. - - Step-by-step instructions: - - 1) Build an ITX image to be loaded at FEF00000 - - make distclean - make MPC8349ITX_config - make - - 2) Take the u-boot.bin image and flash it at FEF00000. - - tftp $loadaddr u-boot.bin - protect off all - erase FEF00000 +$filesize - cp.b $loadaddr FEF00000 $filesize - - 3) Build an ITX image to be loaded at FE000000 - - make distclean - make MPC8349ITX_LOWBOOT_config - make - - 4) Take the u-boot.bin image and flash it at FE000000. - - tftp $loadaddr u-boot.bin - protect off FE000000 +$filesize - erase FE000000 +$filesize - cp.b $loadaddr FE000000 $filesize - - The HRCW in flash is currently set to boot the image at FE000000. - - If you have a hardware debugger, configure it to set the HRCW to - B460A000 04040000 if you want to boot the image at FEF00000, or set - it to B060A000 04040000 if you want to boot the image at FE000000. - - To change the HRCW in flash to boot the image at FEF00000, use these - U-Boot commands: - - cp.b FE000000 1000 10000 ; copy 1st flash sector to 1000 - mw.b 1020 b4 8 ; modify BMS bit - protect off FE000000 +10000 - erase FE000000 +10000 - cp.b 1000 FE000000 10000 - -7. Notes - 1) The console baudrate for MPC8349EITX is 115200bps. |