From 2cea1e6b9aa20af4040e87e88f9d4d2017cc2233 Mon Sep 17 00:00:00 2001 From: wbx Date: Wed, 16 Mar 2005 13:50:00 +0000 Subject: add all source code from linksys/broadcom which is free, to cvs for better maintainence inside openwrt. this gives us the ability to better support different hardware models, without changing any external tar-balls. only et.o and wl.o is missing and is fetched from my webserver. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@379 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../mips/brcm-boards/bcm947xx/compressed/README.mjn3 | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 (limited to 'openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3') diff --git a/openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 b/openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 new file mode 100644 index 000000000..0e93e55f9 --- /dev/null +++ b/openwrt/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 @@ -0,0 +1,20 @@ + +FIRST... See the dedication in the decompress_bunzip2.c file as it applies +here too. Donations to hospice in Toni's memory would be appreciated. + +As far as the code goes... the bzImage is just a bzip'd kernel image with +a small gzip'd decompressor/loader stuck on front. CFE ungzip's the loader +app which then relocates the bunzip decompressor into higher memory and +bunzip's the compressed kernel directly from flash. Then the instruction +cache is flushed (to remove traces of the loader) and the kernel is executed. + +Of course, a better approach would be to add bunzip decompression to CFE. + +Notes... + 1) Instruction cache size and linesize are hardcoded (see the #warning). + 2) Currently assumes at least 16M or ram. + 3) Thanks to Mike Baker mbm at alt dot org for bouncing ideas back + and forth as well as diagnosing the last (icache) bug. + +Manuel Novoa III May 30, 2004 + -- cgit v1.2.3