diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.34/001-backport.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-2.6.34/001-backport.patch | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.34/001-backport.patch b/target/linux/brcm47xx/patches-2.6.34/001-backport.patch new file mode 100644 index 0000000000..f27f3d19d0 --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.34/001-backport.patch @@ -0,0 +1,254 @@ +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 |