diff options
author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-06-11 01:58:01 -0700 |
---|---|---|
committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-06-11 01:58:01 -0700 |
commit | 4894e4aca82aca927d0404ce61f021f790de4b1e (patch) | |
tree | bbe0d083829f5858295298f188d885367cf4b1f6 /arch/cris/boot/compressed/README | |
parent | 05e882f890038c702a4f15d385135d03cf74ad48 (diff) | |
parent | 07a2039b8eb0af4ff464efd3dfd95de5c02648c6 (diff) |
Merge commit 'v2.6.30' into next
Diffstat (limited to 'arch/cris/boot/compressed/README')
-rw-r--r-- | arch/cris/boot/compressed/README | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/cris/boot/compressed/README b/arch/cris/boot/compressed/README new file mode 100644 index 00000000000..182c5d75784 --- /dev/null +++ b/arch/cris/boot/compressed/README @@ -0,0 +1,24 @@ +Creation of the self-extracting compressed kernel image (vmlinuz) +----------------------------------------------------------------- + +This can be slightly confusing because it's a process with many steps. + +The kernel object built by the arch/etrax100/Makefile, vmlinux, is split +by that makefile into text and data binary files, vmlinux.text and +vmlinux.data. + +Those files together with a ROM filesystem can be catted together and +burned into a flash or executed directly at the DRAM origin. + +They can also be catted together and compressed with gzip, which is what +happens in this makefile. Together they make up piggy.img. + +The decompressor is built into the file decompress.o. It is turned into +the binary file decompress.bin, which is catted together with piggy.img +into the file vmlinuz. It can be executed in an arbitrary place in flash. + +Be careful - it assumes some things about free locations in DRAM. It +assumes the DRAM starts at 0x40000000 and that it is at least 8 MB, +so it puts its code at 0x40700000, and initial stack at 0x40800000. + +-Bjorn |