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authorWaldemar Brodkorb <mips@waldemar-brodkorb.de>2010-06-08 19:06:01 +0200
committerRalf Baechle <ralf@linux-mips.org>2010-07-05 17:17:32 +0100
commit121915c4ee0812a14bc8d752bc210d0238d755c1 (patch)
tree76c12b34f0b97fbdc2ba627b6cc58327847a90d8 /arch/mips/bcm47xx/setup.c
parent5df74352876c0835d2b41b53858c9ee779e0f12f (diff)
downloadop-kernel-dev-121915c4ee0812a14bc8d752bc210d0238d755c1.zip
op-kernel-dev-121915c4ee0812a14bc8d752bc210d0238d755c1.tar.gz
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>
Diffstat (limited to 'arch/mips/bcm47xx/setup.c')
-rw-r--r--arch/mips/bcm47xx/setup.c39
1 files changed, 27 insertions, 12 deletions
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index d442e11..b1aee33 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -1,8 +1,8 @@
/*
* Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
- * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2006 Michael Buesch <mb@bu3sch.de>
+ * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -33,6 +33,7 @@
#include <asm/time.h>
#include <bcm47xx.h>
#include <asm/fw/cfe/cfe_api.h>
+#include <asm/mach-bcm47xx/nvram.h>
struct ssb_bus ssb_bcm47xx;
EXPORT_SYMBOL(ssb_bcm47xx);
@@ -81,28 +82,42 @@ static int bcm47xx_get_invariants(struct ssb_bus *bus,
/* Fill boardinfo structure */
memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
- if (cfe_getenv("boardvendor", buf, sizeof(buf)) >= 0)
+ if (cfe_getenv("boardvendor", buf, sizeof(buf)) >= 0 ||
+ nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
- if (cfe_getenv("boardtype", buf, sizeof(buf)) >= 0)
+ if (cfe_getenv("boardtype", buf, sizeof(buf)) >= 0 ||
+ nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
- if (cfe_getenv("boardrev", buf, sizeof(buf)) >= 0)
+ if (cfe_getenv("boardrev", buf, sizeof(buf)) >= 0 ||
+ nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
/* Fill sprom structure */
memset(&(iv->sprom), 0, sizeof(struct ssb_sprom));
iv->sprom.revision = 3;
- if (cfe_getenv("et0macaddr", buf, sizeof(buf)) >= 0)
+ if (cfe_getenv("et0macaddr", buf, sizeof(buf)) >= 0 ||
+ nvram_getenv("et0macaddr", buf, sizeof(buf)) >= 0)
str2eaddr(buf, iv->sprom.et0mac);
- if (cfe_getenv("et1macaddr", buf, sizeof(buf)) >= 0)
+
+ if (cfe_getenv("et1macaddr", buf, sizeof(buf)) >= 0 ||
+ nvram_getenv("et1macaddr", buf, sizeof(buf)) >= 0)
str2eaddr(buf, iv->sprom.et1mac);
- if (cfe_getenv("et0phyaddr", buf, sizeof(buf)) >= 0)
- iv->sprom.et0phyaddr = simple_strtoul(buf, NULL, 10);
- if (cfe_getenv("et1phyaddr", buf, sizeof(buf)) >= 0)
- iv->sprom.et1phyaddr = simple_strtoul(buf, NULL, 10);
- if (cfe_getenv("et0mdcport", buf, sizeof(buf)) >= 0)
+
+ if (cfe_getenv("et0phyaddr", buf, sizeof(buf)) >= 0 ||
+ nvram_getenv("et0phyaddr", buf, sizeof(buf)) >= 0)
+ iv->sprom.et0phyaddr = simple_strtoul(buf, NULL, 0);
+
+ if (cfe_getenv("et1phyaddr", buf, sizeof(buf)) >= 0 ||
+ nvram_getenv("et1phyaddr", buf, sizeof(buf)) >= 0)
+ iv->sprom.et1phyaddr = simple_strtoul(buf, NULL, 0);
+
+ if (cfe_getenv("et0mdcport", buf, sizeof(buf)) >= 0 ||
+ nvram_getenv("et0mdcport", buf, sizeof(buf)) >= 0)
iv->sprom.et0mdcport = simple_strtoul(buf, NULL, 10);
- if (cfe_getenv("et1mdcport", buf, sizeof(buf)) >= 0)
+
+ if (cfe_getenv("et1mdcport", buf, sizeof(buf)) >= 0 ||
+ nvram_getenv("et1mdcport", buf, sizeof(buf)) >= 0)
iv->sprom.et1mdcport = simple_strtoul(buf, NULL, 10);
return 0;
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