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author | Waldemar Brodkorb <wbx@openwrt.org> | 2005-03-16 13:50:00 +0000 |
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committer | Waldemar Brodkorb <wbx@openwrt.org> | 2005-03-16 13:50:00 +0000 |
commit | 664c20dbce12b75244dc079fe7a0493f75b2713f (patch) | |
tree | 1f132d8a78f19c1172bf4dbd9fba583bbb45423d /package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 | |
parent | 9a4cf9140e635002b6a72ab3b864b9b74e828382 (diff) | |
download | master-187ad058-664c20dbce12b75244dc079fe7a0493f75b2713f.tar.gz master-187ad058-664c20dbce12b75244dc079fe7a0493f75b2713f.tar.bz2 master-187ad058-664c20dbce12b75244dc079fe7a0493f75b2713f.zip |
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/openwrt@379 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3')
-rw-r--r-- | package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 b/package/linux/kernel-source/arch/mips/brcm-boards/bcm947xx/compressed/README.mjn3 new file mode 100644 index 0000000000..0e93e55f90 --- /dev/null +++ b/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 <mjn3@codepoet.org> May 30, 2004 + |