Date: Sat, 11 Oct 2008 13:19:32 +0100 From: "Bruce M. Simpson" <bms@incunabulum.net> To: freebsd-embedded@FreeBSD.org Subject: HOWTO: Build NSLU2 U-Boot on FreeBSD Message-ID: <48F099D4.2050302@incunabulum.net>
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[-- Attachment #1 --] Thanks to Rink Springer and Rafal Jaworowski. ---------------------- Building NSLU2 U-boot firmware on FreeBSD hosts Quick start Make sure you have a JTAG adapter as a get-out-of-jail-free card in case you trash the flash, "portinstall devel/urjtag" to get a driver for it. Recommend getting one like the Olimex OCD as it has heaps more useful functionality than just rewriting the flash, and should also work with OpenOCD. Toolchain setup cd /usr/ports/devel/cross-binutils env TGTARCH=arm TGTABI=rtems make install cd /usr/ports/devel/cross-gcc env TGTARCH=arm TGTABI=rtems make install Get stas@FreeBSD.org's updated u-boot tarball: uboot-atamantb.tar.bz2 Untar it Fetch NSLU2 patch set from NSLU2-Linux: http://trac.nslu2-linux.org/kernel/browser/trunk/patches/u-boot/0001-ixp-Support-for-NSLU2.patch Apply (patch -p1) inside uboot-atamantb. Apply Ix*.diff (provided) inside cpu/ixp/npe. U-Boot doesn't grok being built for an RTEMS target, so it needs some sweet lovin'. Fetch encumbered NPE microcode from Intel: http://downloadcenter.intel.com/ Search for IPL_IXP400NPELIBRARY-2_1.ZIP (Yes yes, I know, we can't redistribute it, for now anyway...there will be a workaround) Unzip... Copy ./cpu/ixp/npe/IxNpeMicrocode.c.orig into uboot-atamantb/cpu/ixp/npe· Remove mkimage from tools/Makefile (it needs rentokil to build on FreeBSD; and besides, you can use "portinstall devel/u-boot" to get mkimage) Now: env CROSS_COMPILE=arm-rtems- gmake distclean env CROSS_COMPILE=arm-rtems- gmake nslu2_config env CROSS_COMPILE=arm-rtems- gmake Voila, you should have u-boot firmware images, which you can now use to reflash an NSLU2. [-- Attachment #2 --] --- ./cpu/ixp/npe/include/IxOsalEndianess.h.orig 2008-10-03 12:11:18.000000000 +0100 +++ ./cpu/ixp/npe/include/IxOsalEndianess.h 2008-10-03 13:11:48.000000000 +0100 @@ -59,6 +59,32 @@ /* get ntohl/ntohs/htohl/htons macros definitions for WinCE */ #include <Winsock2.h> +#elif defined (__rtems__) + +# ifdef htonl +# undef htonl +# endif +# ifdef ntohl +# undef ntohl +# endif + +# if BYTE_ORDER == BIG_ENDIAN + +# define ntohl(a) (a) +# define htonl(a) (a) +# elif BYTE_ORDER == LITTLE_ENDIAN +# define SWAP_LONG(x) \ + ((__u32)( \ + (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \ + (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ + (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \ + (((__u32)(x) & (__u32)0xff000000UL) >> 24) )) +# define ntohl(a) SWAP_LONG(a) +# define htonl(a) SWAP_LONG(a) +# else +# error meep +# endif + #else #error Unknown OS, please add a section with the include file for htonl/htons/ntohl/ntohs @@ -123,6 +149,14 @@ #define IX_OSAL_WINCE_LE +#elif defined (__rtems__) && defined (__BIG_ENDIAN) + +#define IX_OSAL_LINUX_BE /* XXX */ + +#elif defined (__rtems__) && defined (__BIG_ENDIAN) + +#define IX_OSAL_LINUX_LE /* XXX */ + #else #error Unknown OS/Endianess combination - only vxWorks BE LE, Linux BE LE, WinCE BE LE are supported [-- Attachment #3 --] --- ./cpu/ixp/npe/include/IxOsalMemAccess.h.orig 2008-10-03 13:24:52.000000000 +0100 +++ ./cpu/ixp/npe/include/IxOsalMemAccess.h 2008-10-03 13:26:07.000000000 +0100 @@ -324,7 +324,9 @@ #endif /* wince */ -#if defined (__vxworks) || (defined (__linux) && defined (IX_OSAL_STATIC_MEMORY_MAP)) || \ +#if defined (__vxworks) || \ + defined (__rtems__) || \ + (defined (__linux) && defined (IX_OSAL_STATIC_MEMORY_MAP)) || \ (defined (__wince) && defined (IX_OSAL_STATIC_MEMORY_MAP)) #define IX_OSAL_READ_LONG_IO(wAddr) IX_OSAL_READ_LONG_RAW(wAddr)help
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