mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-24 17:21:32 +02:00
9fe2a2d554
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22296 3c298f89-4303-0410-b956-a3cf2f4a3e73
255 lines
8.2 KiB
Diff
255 lines
8.2 KiB
Diff
commit 121915c4ee0812a14bc8d752bc210d0238d755c1
|
|
Author: Waldemar Brodkorb <mips@waldemar-brodkorb.de>
|
|
Date: Tue Jun 8 19:06:01 2010 +0200
|
|
|
|
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>
|
|
|
|
--- a/arch/mips/bcm47xx/Makefile
|
|
+++ b/arch/mips/bcm47xx/Makefile
|
|
@@ -3,4 +3,4 @@
|
|
# under Linux.
|
|
#
|
|
|
|
-obj-y := gpio.o irq.o prom.o serial.o setup.o time.o wgt634u.o
|
|
+obj-y := gpio.o irq.o nvram.o prom.o serial.o setup.o time.o wgt634u.o
|
|
--- /dev/null
|
|
+++ b/arch/mips/bcm47xx/nvram.c
|
|
@@ -0,0 +1,94 @@
|
|
+/*
|
|
+ * BCM947xx nvram variable access
|
|
+ *
|
|
+ * Copyright (C) 2005 Broadcom Corporation
|
|
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.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
|
|
+ * Free Software Foundation; either version 2 of the License, or (at your
|
|
+ * option) any later version.
|
|
+ */
|
|
+
|
|
+#include <linux/init.h>
|
|
+#include <linux/types.h>
|
|
+#include <linux/module.h>
|
|
+#include <linux/ssb/ssb.h>
|
|
+#include <linux/kernel.h>
|
|
+#include <linux/string.h>
|
|
+#include <asm/addrspace.h>
|
|
+#include <asm/mach-bcm47xx/nvram.h>
|
|
+#include <asm/mach-bcm47xx/bcm47xx.h>
|
|
+
|
|
+static char nvram_buf[NVRAM_SPACE];
|
|
+
|
|
+/* Probe for NVRAM header */
|
|
+static void __init early_nvram_init(void)
|
|
+{
|
|
+ struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore;
|
|
+ struct nvram_header *header;
|
|
+ int i;
|
|
+ u32 base, lim, off;
|
|
+ u32 *src, *dst;
|
|
+
|
|
+ base = mcore->flash_window;
|
|
+ lim = mcore->flash_window_size;
|
|
+
|
|
+ off = FLASH_MIN;
|
|
+ while (off <= lim) {
|
|
+ /* Windowed flash access */
|
|
+ header = (struct nvram_header *)
|
|
+ KSEG1ADDR(base + off - NVRAM_SPACE);
|
|
+ if (header->magic == NVRAM_HEADER)
|
|
+ goto found;
|
|
+ off <<= 1;
|
|
+ }
|
|
+
|
|
+ /* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
|
|
+ header = (struct nvram_header *) KSEG1ADDR(base + 4096);
|
|
+ if (header->magic == NVRAM_HEADER)
|
|
+ goto found;
|
|
+
|
|
+ header = (struct nvram_header *) KSEG1ADDR(base + 1024);
|
|
+ if (header->magic == NVRAM_HEADER)
|
|
+ goto found;
|
|
+
|
|
+ return;
|
|
+
|
|
+found:
|
|
+ src = (u32 *) header;
|
|
+ dst = (u32 *) nvram_buf;
|
|
+ for (i = 0; i < sizeof(struct nvram_header); i += 4)
|
|
+ *dst++ = *src++;
|
|
+ for (; i < header->len && i < NVRAM_SPACE; i += 4)
|
|
+ *dst++ = le32_to_cpu(*src++);
|
|
+}
|
|
+
|
|
+int nvram_getenv(char *name, char *val, size_t val_len)
|
|
+{
|
|
+ char *var, *value, *end, *eq;
|
|
+
|
|
+ if (!name)
|
|
+ return 1;
|
|
+
|
|
+ if (!nvram_buf[0])
|
|
+ early_nvram_init();
|
|
+
|
|
+ /* Look for name=value and return value */
|
|
+ var = &nvram_buf[sizeof(struct nvram_header)];
|
|
+ end = nvram_buf + sizeof(nvram_buf) - 2;
|
|
+ end[0] = end[1] = '\0';
|
|
+ for (; *var; var = value + strlen(value) + 1) {
|
|
+ eq = strchr(var, '=');
|
|
+ if (!eq)
|
|
+ break;
|
|
+ value = eq + 1;
|
|
+ if ((eq - var) == strlen(name) &&
|
|
+ strncmp(var, name, (eq - var)) == 0) {
|
|
+ snprintf(val, val_len, "%s", value);
|
|
+ return 0;
|
|
+ }
|
|
+ }
|
|
+ return 1;
|
|
+}
|
|
+EXPORT_SYMBOL(nvram_getenv);
|
|
--- 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
|
|
/* 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;
|
|
--- /dev/null
|
|
+++ b/arch/mips/include/asm/mach-bcm47xx/nvram.h
|
|
@@ -0,0 +1,36 @@
|
|
+/*
|
|
+ * Copyright (C) 2005, Broadcom Corporation
|
|
+ * Copyright (C) 2006, Felix Fietkau <nbd@openwrt.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
|
|
+ * Free Software Foundation; either version 2 of the License, or (at your
|
|
+ * option) any later version.
|
|
+ */
|
|
+
|
|
+#ifndef __NVRAM_H
|
|
+#define __NVRAM_H
|
|
+
|
|
+#include <linux/types.h>
|
|
+
|
|
+struct nvram_header {
|
|
+ u32 magic;
|
|
+ u32 len;
|
|
+ u32 crc_ver_init; /* 0:7 crc, 8:15 ver, 16:31 sdram_init */
|
|
+ u32 config_refresh; /* 0:15 sdram_config, 16:31 sdram_refresh */
|
|
+ u32 config_ncdl; /* ncdl values for memc */
|
|
+};
|
|
+
|
|
+#define NVRAM_HEADER 0x48534C46 /* 'FLSH' */
|
|
+#define NVRAM_VERSION 1
|
|
+#define NVRAM_HEADER_SIZE 20
|
|
+#define NVRAM_SPACE 0x8000
|
|
+
|
|
+#define FLASH_MIN 0x00020000 /* Minimum flash size */
|
|
+
|
|
+#define NVRAM_MAX_VALUE_LEN 255
|
|
+#define NVRAM_MAX_PARAM_LEN 64
|
|
+
|
|
+extern int nvram_getenv(char *name, char *val, size_t val_len);
|
|
+
|
|
+#endif
|