Commit Graph

7 Commits

Author SHA1 Message Date
Waldemar Brodkorb 121915c4ee MIPS: BCM47xx: Add NVRAM support devices
When trying to netboot a Linksys WRT54GS WLAN router, the bootup fails,
because of following error message:

...
[    0.424000] b44: b44.c:v2.0
[    0.424000] b44: Invalid MAC address found in EEPROM
[    0.432000] b44 ssb0:1: Problem fetching invariants of chip,aborting
[    0.436000] b44: probe of ssb0:1 failed with error -22
...

The router uses a CFE bootloader, but most of the needed environment
variables for network card initialization, are not available from CFE
via printenv and even though not via cfe_getenv().
The required environment variables are saved in a special partition
in flash memory. The attached patch implement nvram_getenv and enables
bootup via NFS root on my router.

Most of the patch is extracted from the OpenWrt subversion repository and
stripped down and cleaned up to just fix this issue.

[Ralf: sorted out header file inclusions.  Lots of unneded headers and such
that should have been included.]

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Reviewed-by: Phil Sutter <phil@nwl.cc>
To: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/1359/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-07-05 17:17:32 +01:00
Ralf Baechle e0e53dee69 MIPS: Nuke trailing blank lines
Recent git versions now warn about those and they've always been a bit of
an annoyance.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27 12:53:14 +01:00
Aurelien Jarno b06f3e19a6 MIPS: BCM47xx: Use the new SSB GPIO API
This patch simplifies the BCM47xx GPIO code by using the new SSB GPIO
API, which does a lot things that were implemented directly in the
BCM47xx code.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15 12:46:50 +01:00
Aurelien Jarno cc2d6f701b [MIPS] BCM47XX: Use new SSB SPROM data structure
Switch the BCM47XX code to the new SPROM data structure now that the old
one has been removed.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19 17:01:34 +00:00
Ralf Baechle 4b550488f8 [MIPS] Deforest the function pointer jungle in the time code.
Hard to follow who is pointing what to where and why so it's simply getting
in the way of the time code renovation.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:08 +01:00
Aurelien Jarno 25e5fb9741 [MIPS] Add CFE support to BCM47XX
Add CFE support to the BCM47XX code.  That includes querying CFE environment
variables as well as using CFE to print messages before the serial port is
initialized (early printk).
    
Signed-off-by: Aurelien Jarno <aurel32@farad.aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:06 +01:00
Aurelien Jarno 1c0c13eb93 [MIPS] Add support for BCM47XX CPUs.
Note that the BCM4710 does not support the wait instruction, this
is not a mistake in the code.
    
It originally comes from the OpenWrt patches.
    
Cc: Michael Buesch <mb@bu3sch.de>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Florian Schirmer <jolt@tuxbox.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:02 +01:00