diff options
author | Alessandro Rubini <rubini@unipv.it> | 2009-06-22 09:18:37 +0200 |
---|---|---|
committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2009-07-06 21:53:00 +0200 |
commit | ee1363f2da3996bafdecdd8f4e48862ebff3f271 (patch) | |
tree | aa62a40465d45b42d4b2d094c8ab9a3c610e1195 /doc/README.nhk8815 | |
parent | 040f8f63e922bbfb8ba0958bf637f11a917f5c38 (diff) | |
download | u-boot-imx-ee1363f2da3996bafdecdd8f4e48862ebff3f271.zip u-boot-imx-ee1363f2da3996bafdecdd8f4e48862ebff3f271.tar.gz u-boot-imx-ee1363f2da3996bafdecdd8f4e48862ebff3f271.tar.bz2 |
arm nomadik: rename board to nhk8815
This is an error in my side in the initial submission: nobody
calls it ""nmdk8815", it's "nomadik hardware kit", nhk8815, instead.
Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Diffstat (limited to 'doc/README.nhk8815')
-rw-r--r-- | doc/README.nhk8815 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/doc/README.nhk8815 b/doc/README.nhk8815 new file mode 100644 index 0000000..453cfae --- /dev/null +++ b/doc/README.nhk8815 @@ -0,0 +1,22 @@ + +The Nomadik 8815 CPU has a "secure" boot mode where no external access +(not even JTAG) is allowed. The "remap" bits in the evaluation board +are configured in order to boot from the internal ROM memory (in +secure mode). + +The boot process as defined by the manufacturer executes external code +(loaded from NAND or OneNAND) that that disables such "security" in +order to run u-boot and later the kernel without constraints. Such +code is a proprietary initial boot loader, called "X-Loader" (in case +anyone wonders, it has no relations with other loaders with the same +name and there is no GPL code inside the ST X-Loader). + +SDRAM configuration, PLL setup and initial loading from NAND is +implemented in the X-Loader, so U-Boot is already running in SDRAM +when control is handed over to it. + + +On www.st.com/nomadik and on www.stnwireless.com there are documents, +summary data and white papers on Nomadik. The full datasheet for +STn8815 is not currently available on line but under specific request +to the local ST sales offices. |