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| ea_lpc2478 [2011/09/27 19:33] – admin | ea_lpc2478 [2011/09/27 21:26] (current) – [Building uClinux] admin | ||
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| ====== Embedded Artists LPC2478 evaluation board ====== | ====== Embedded Artists LPC2478 evaluation board ====== | ||
| + | ===== Board specs ===== | ||
| * ARM7TDMI with 512KB Flash and 96KB RAM | * ARM7TDMI with 512KB Flash and 96KB RAM | ||
| * External Flash: 128MB NAND, 4MB NOR | * External Flash: 128MB NAND, 4MB NOR | ||
| Line 8: | Line 9: | ||
| * 32.768kH RTC | * 32.768kH RTC | ||
| - | Embedded Artists provides patches for u-boot 1.1.6. This is a very old u-boot but we have to use it as our board is not supported on the main u-boot development line. The version of u-boot that we are using, 1.1.6, does not seem to be compilable under Codesourcery g++. A non-EABI tool is needed, like bare metal, therefore crosstool-ng is needed. | + | ===== Building U-boot ===== |
| + | Embedded Artists provides patches for u-boot 1.1.6. This is a very old U-boot but we have to use it as our board is not supported on the main u-boot development line. The version of U-boot that we are using, 1.1.6, does not seem to be compilable under Codesourcery g++. A non-EABI tool is needed, like bare metal, therefore crosstool-ng is needed. | ||
| + | # build a u-boot.hex | ||
| + | cd u-boot | ||
| + | make distclean | ||
| + | make LPC2478OEM_Board_32bit_config | ||
| + | make | ||
| + | arm-linux-objcopy -I binary -O ihex u-boot.bin u-boot.hex | ||
| + | | ||
| # u-boot.bin is a raw binary image | # u-boot.bin is a raw binary image | ||
| # u-boot is an image in ELF binary format, never used for booting | # u-boot is an image in ELF binary format, never used for booting | ||
| Line 16: | Line 25: | ||
| arm-unknown-elf-objcopy -I binary -O ihex u-boot.bin u-boot.hex | arm-unknown-elf-objcopy -I binary -O ihex u-boot.bin u-boot.hex | ||
| | | ||
| + | ===== U-boot flashing ===== | ||
| jumper pin P2.10 | jumper pin P2.10 | ||
| Line 24: | Line 34: | ||
| compile the utility: | compile the utility: | ||
| gcc -o lpcisp lpc21isp_148x.c | gcc -o lpcisp lpc21isp_148x.c | ||
| - | |||
| - | build a u-boot.hex | ||
| - | cd u-boot | ||
| - | make distclean | ||
| - | make LPC2478OEM_Board_32bit_config | ||
| - | make | ||
| - | arm-linux-objcopy -I binary -O ihex u-boot.bin u-boot.hex | ||
| Run the utility | Run the utility | ||
| Line 41: | Line 44: | ||
| We can connect to the serial port terminal with minicom, using these settings: 115200 8N1 no flow control. | We can connect to the serial port terminal with minicom, using these settings: 115200 8N1 no flow control. | ||
| + | ===== Building uClinux ===== | ||
| + | |||
| + | tar -xzvf / | ||
| + | cd uClinux-dist/ | ||
| + | rm -r linux-2.* | ||
| + | tar -xzvf / | ||
| + | mv linux-2.6.21/ | ||
| + | patch -p1 < / | ||
| + | patch -p1 < / | ||
| + | | ||
| + | | ||
| + | | ||
| + | make menuconfig | ||
| + | make CROSS_COMPILE=arm-elf- | ||
| + | |||
| + | | ||
| + | |||
| + | make CROSS_COMPILE=arm-elf- clean | ||
| + | make CROSS_COMPILE=arm-elf- | ||
| + | make ARCH=arm CROSS_COMPILE=arm-uclinuxeabi- menuconfig | ||
| + | make ARCH=arm CROSS_COMPILE=arm-uclinuxeabi- all | ||
| + | |||
| + | | ||
| + | |||
| + | make ARCH=arm CROSS_COMPILE=arm-uclinuxeabi- CC=/ | ||
| + | |||
| + | why isn't CROSS_COMPILE variable recognized within linux/ | ||
| + | |||
| ====== Some links ====== | ====== Some links ====== | ||
| our development kit:\\ | our development kit:\\ | ||