brcm47xx: add initial support for kernel 3.8

This contains the following new bigger changes:
 * new partition parser which still could lake some features or have bugs
 * new nand flash driver
 * using physmap-flash flash driver for parallel flash
 * some changes to the serial flash driver

With these changes OpenWrt starts using more of the mainline flash drivers.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35632 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 472 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-3.8/080-MIPS-BCM47XX-rewrite-nvram-probing.patch b/target/linux/brcm47xx/patches-3.8/080-MIPS-BCM47XX-rewrite-nvram-probing.patch
new file mode 100644
index 000000000..04c378f33
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.8/080-MIPS-BCM47XX-rewrite-nvram-probing.patch
@@ -0,0 +1,472 @@
+--- a/arch/mips/bcm47xx/nvram.c
++++ b/arch/mips/bcm47xx/nvram.c
+@@ -3,7 +3,7 @@
+  *
+  * Copyright (C) 2005 Broadcom Corporation
+  * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+- * Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
++ * Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
+  *
+  * 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
+@@ -18,83 +18,168 @@
+ #include <linux/kernel.h>
+ #include <linux/string.h>
+ #include <asm/addrspace.h>
+-#include <asm/mach-bcm47xx/nvram.h>
++#include <bcm47xx_nvram.h>
+ #include <asm/mach-bcm47xx/bcm47xx.h>
+ 
+ static char nvram_buf[NVRAM_SPACE];
+ 
++static u32 find_nvram_size(u32 end)
++{
++	struct nvram_header *header;
++	u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
++	int i;
++
++	for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) {
++		header = (struct nvram_header *)KSEG1ADDR(end - nvram_sizes[i]);
++		if (header->magic == NVRAM_HEADER)
++			return nvram_sizes[i];
++	}
++
++	return 0;
++}
++
+ /* Probe for NVRAM header */
+-static void early_nvram_init(void)
++static int nvram_find_and_copy(u32 base, u32 lim)
+ {
+-#ifdef CONFIG_BCM47XX_SSB
+-	struct ssb_mipscore *mcore_ssb;
+-#endif
+-#ifdef CONFIG_BCM47XX_BCMA
+-	struct bcma_drv_cc *bcma_cc;
+-#endif
+ 	struct nvram_header *header;
+ 	int i;
+-	u32 base = 0;
+-	u32 lim = 0;
+ 	u32 off;
+ 	u32 *src, *dst;
++	u32 size;
+ 
+-	switch (bcm47xx_bus_type) {
+-#ifdef CONFIG_BCM47XX_SSB
+-	case BCM47XX_BUS_TYPE_SSB:
+-		mcore_ssb = &bcm47xx_bus.ssb.mipscore;
+-		base = mcore_ssb->pflash.window;
+-		lim = mcore_ssb->pflash.window_size;
+-		break;
+-#endif
+-#ifdef CONFIG_BCM47XX_BCMA
+-	case BCM47XX_BUS_TYPE_BCMA:
+-		bcma_cc = &bcm47xx_bus.bcma.bus.drv_cc;
+-		base = bcma_cc->pflash.window;
+-		lim = bcma_cc->pflash.window_size;
+-		break;
+-#endif
+-	}
+-
++	/* TODO: when nvram is on nand flash check for bad blocks first. */
+ 	off = FLASH_MIN;
+ 	while (off <= lim) {
+ 		/* Windowed flash access */
+-		header = (struct nvram_header *)
+-			KSEG1ADDR(base + off - NVRAM_SPACE);
+-		if (header->magic == NVRAM_HEADER)
++		size = find_nvram_size(base + off);
++		if (size) {
++			header = (struct nvram_header *)KSEG1ADDR(base + off -
++								  size);
+ 			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)
++	if (header->magic == NVRAM_HEADER) {
++		size = NVRAM_SPACE;
+ 		goto found;
++	}
+ 
+ 	header = (struct nvram_header *) KSEG1ADDR(base + 1024);
+-	if (header->magic == NVRAM_HEADER)
++	if (header->magic == NVRAM_HEADER) {
++		size = NVRAM_SPACE;
+ 		goto found;
++	}
+ 
+-	return;
++	pr_err("no nvram found\n");
++	return -ENXIO;
+ 
+ found:
++
++	if (header->len > size)
++		pr_err("The nvram size accoridng to the header seems to be bigger than the partition on flash\n");
++	if (header->len > NVRAM_SPACE)
++		pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
++		       header->len, NVRAM_SPACE);
++
+ 	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)
++	for (; i < header->len && i < NVRAM_SPACE && i < size; i += 4)
+ 		*dst++ = le32_to_cpu(*src++);
++	memset(dst, 0x0, NVRAM_SPACE - i);
++
++	return 0;
++}
++
++#ifdef CONFIG_BCM47XX_SSB
++static int nvram_init_ssb(void)
++{
++	struct ssb_mipscore *mcore = &bcm47xx_bus.ssb.mipscore;
++#ifdef CONFIG_SSB_SFLASH
++	struct ssb_chipcommon *chipco = &bcm47xx_bus.ssb.chipco;
++#endif
++	u32 base;
++	u32 lim;
++
++	if (mcore->pflash.present) {
++		base = mcore->pflash.window;
++		lim = mcore->pflash.window_size;
++#ifdef CONFIG_SSB_SFLASH
++	} else if (chipco->sflash.present) {
++		base = chipco->sflash.window;
++		lim = chipco->sflash.size;
++#endif
++	} else {
++		pr_err("Couldn't find supported flash memory\n");
++		return -ENXIO;
++	}
++
++	return nvram_find_and_copy(base, lim);
++}
++#endif
++
++#ifdef CONFIG_BCM47XX_BCMA
++static int nvram_init_bcma(void)
++{
++	struct bcma_drv_cc *cc = &bcm47xx_bus.bcma.bus.drv_cc;
++	u32 base;
++	u32 lim;
++
++#ifdef CONFIG_BCMA_NFLASH
++	if (cc->nflash.boot) {
++		base = BCMA_SOC_FLASH1;
++		lim = BCMA_SOC_FLASH1_SZ;
++	} else
++#endif
++	if (cc->pflash.present) {
++		base = cc->pflash.window;
++		lim = cc->pflash.window_size;
++#ifdef CONFIG_BCMA_SFLASH
++	} else if (cc->sflash.present) {
++		base = cc->sflash.window;
++		lim = cc->sflash.size;
++#endif
++	} else {
++		pr_err("Couldn't find supported flash memory\n");
++		return -ENXIO;
++	}
++
++	return nvram_find_and_copy(base, lim);
+ }
++#endif
+ 
+-int nvram_getenv(char *name, char *val, size_t val_len)
++static int nvram_init(void)
++{
++	switch (bcm47xx_bus_type) {
++#ifdef CONFIG_BCM47XX_SSB
++	case BCM47XX_BUS_TYPE_SSB:
++		return nvram_init_ssb();
++#endif
++#ifdef CONFIG_BCM47XX_BCMA
++	case BCM47XX_BUS_TYPE_BCMA:
++		return nvram_init_bcma();
++#endif
++	}
++	return -ENXIO;
++}
++
++int bcm47xx_nvram_getenv(char *name, char *val, size_t val_len)
+ {
+ 	char *var, *value, *end, *eq;
++	int err;
+ 
+ 	if (!name)
+-		return NVRAM_ERR_INV_PARAM;
++		return -EINVAL;
+ 
+-	if (!nvram_buf[0])
+-		early_nvram_init();
++	if (!nvram_buf[0]) {
++		err = nvram_init();
++		if (err)
++			return err;
++	}
+ 
+ 	/* Look for name=value and return value */
+ 	var = &nvram_buf[sizeof(struct nvram_header)];
+@@ -110,6 +195,6 @@ int nvram_getenv(char *name, char *val,
+ 			return snprintf(val, val_len, "%s", value);
+ 		}
+ 	}
+-	return NVRAM_ERR_ENVNOTFOUND;
++	return -ENOENT;
+ }
+-EXPORT_SYMBOL(nvram_getenv);
++EXPORT_SYMBOL(bcm47xx_nvram_getenv);
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -35,7 +35,7 @@
+ #include <asm/reboot.h>
+ #include <asm/time.h>
+ #include <bcm47xx.h>
+-#include <asm/mach-bcm47xx/nvram.h>
++#include <bcm47xx_nvram.h>
+ 
+ union bcm47xx_bus bcm47xx_bus;
+ EXPORT_SYMBOL(bcm47xx_bus);
+@@ -115,7 +115,7 @@ static int bcm47xx_get_invariants(struct
+ 	memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
+ 	bcm47xx_fill_sprom(&iv->sprom, NULL, false);
+ 
+-	if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
++	if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
+ 		iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
+ 
+ 	return 0;
+@@ -138,7 +138,7 @@ static void __init bcm47xx_register_ssb(
+ 		panic("Failed to initialize SSB bus (err %d)", err);
+ 
+ 	mcore = &bcm47xx_bus.ssb.mipscore;
+-	if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
++	if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
+ 		if (strstr(buf, "console=ttyS1")) {
+ 			struct ssb_serial_port port;
+ 
+--- a/arch/mips/bcm47xx/sprom.c
++++ b/arch/mips/bcm47xx/sprom.c
+@@ -27,7 +27,7 @@
+  */
+ 
+ #include <bcm47xx.h>
+-#include <nvram.h>
++#include <bcm47xx_nvram.h>
+ 
+ static void create_key(const char *prefix, const char *postfix,
+ 		       const char *name, char *buf, int len)
+@@ -50,10 +50,10 @@ static int get_nvram_var(const char *pre
+ 
+ 	create_key(prefix, postfix, name, key, sizeof(key));
+ 
+-	err = nvram_getenv(key, buf, len);
+-	if (fallback && err == NVRAM_ERR_ENVNOTFOUND && prefix) {
++	err = bcm47xx_nvram_getenv(key, buf, len);
++	if (fallback && err == -ENOENT && prefix) {
+ 		create_key(NULL, postfix, name, key, sizeof(key));
+-		err = nvram_getenv(key, buf, len);
++		err = bcm47xx_nvram_getenv(key, buf, len);
+ 	}
+ 	return err;
+ }
+@@ -144,7 +144,7 @@ static void nvram_read_macaddr(const cha
+ 	if (err < 0)
+ 		return;
+ 
+-	nvram_parse_macaddr(buf, *val);
++	bcm47xx_nvram_parse_macaddr(buf, *val);
+ }
+ 
+ static void nvram_read_alpha2(const char *prefix, const char *name,
+--- /dev/null
++++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h
+@@ -0,0 +1,51 @@
++/*
++ *  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 __BCM47XX_NVRAM_H
++#define __BCM47XX_NVRAM_H
++
++#include <linux/types.h>
++#include <linux/kernel.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 bcm47xx_nvram_getenv(char *name, char *val, size_t val_len);
++
++static inline void bcm47xx_nvram_parse_macaddr(char *buf, u8 macaddr[6])
++{
++	if (strchr(buf, ':'))
++		sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0],
++			&macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
++			&macaddr[5]);
++	else if (strchr(buf, '-'))
++		sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0],
++			&macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
++			&macaddr[5]);
++	else
++		printk(KERN_WARNING "Can not parse mac address: %s\n", buf);
++}
++
++#endif /* __BCM47XX_NVRAM_H */
+--- a/arch/mips/include/asm/mach-bcm47xx/nvram.h
++++ /dev/null
+@@ -1,54 +0,0 @@
+-/*
+- *  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>
+-#include <linux/kernel.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
+-
+-#define NVRAM_ERR_INV_PARAM	-8
+-#define NVRAM_ERR_ENVNOTFOUND	-9
+-
+-extern int nvram_getenv(char *name, char *val, size_t val_len);
+-
+-static inline void nvram_parse_macaddr(char *buf, u8 macaddr[6])
+-{
+-	if (strchr(buf, ':'))
+-		sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0],
+-			&macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
+-			&macaddr[5]);
+-	else if (strchr(buf, '-'))
+-		sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0],
+-			&macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
+-			&macaddr[5]);
+-	else
+-		printk(KERN_WARNING "Can not parse mac address: %s\n", buf);
+-}
+-
+-#endif
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -14,7 +14,7 @@
+ #include <linux/slab.h>
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+-#include <asm/mach-bcm47xx/nvram.h>
++#include <bcm47xx_nvram.h>
+ 
+ /* 10 parts were found on sflash on Netgear WNDR4500 */
+ #define BCM47XXPART_MAX_PARTS		12
+--- a/drivers/net/ethernet/broadcom/b44.c
++++ b/drivers/net/ethernet/broadcom/b44.c
+@@ -381,7 +381,7 @@ static void b44_set_flow_ctrl(struct b44
+ }
+ 
+ #ifdef CONFIG_BCM47XX
+-#include <asm/mach-bcm47xx/nvram.h>
++#include <bcm47xx_nvram.h>
+ static void b44_wap54g10_workaround(struct b44 *bp)
+ {
+ 	char buf[20];
+@@ -393,7 +393,7 @@ static void b44_wap54g10_workaround(stru
+ 	 * see https://dev.openwrt.org/ticket/146
+ 	 * check and reset bit "isolate"
+ 	 */
+-	if (nvram_getenv("boardnum", buf, sizeof(buf)) < 0)
++	if (bcm47xx_nvram_getenv("boardnum", buf, sizeof(buf)) < 0)
+ 		return;
+ 	if (simple_strtoul(buf, NULL, 0) == 2) {
+ 		err = __b44_readphy(bp, 0, MII_BMCR, &val);
+--- a/drivers/ssb/driver_chipcommon_pmu.c
++++ b/drivers/ssb/driver_chipcommon_pmu.c
+@@ -14,7 +14,7 @@
+ #include <linux/delay.h>
+ #include <linux/export.h>
+ #ifdef CONFIG_BCM47XX
+-#include <asm/mach-bcm47xx/nvram.h>
++#include <bcm47xx_nvram.h>
+ #endif
+ 
+ #include "ssb_private.h"
+@@ -322,7 +322,7 @@ static void ssb_pmu_pll_init(struct ssb_
+ 	if (bus->bustype == SSB_BUSTYPE_SSB) {
+ #ifdef CONFIG_BCM47XX
+ 		char buf[20];
+-		if (nvram_getenv("xtalfreq", buf, sizeof(buf)) >= 0)
++		if (bcm47xx_nvram_getenv("xtalfreq", buf, sizeof(buf)) >= 0)
+ 			crystalfreq = simple_strtoul(buf, NULL, 0);
+ #endif
+ 	}
+--- a/include/linux/ssb/ssb_driver_gige.h
++++ b/include/linux/ssb/ssb_driver_gige.h
+@@ -98,14 +98,14 @@ static inline bool ssb_gige_must_flush_p
+ }
+ 
+ #ifdef CONFIG_BCM47XX
+-#include <asm/mach-bcm47xx/nvram.h>
++#include <bcm47xx_nvram.h>
+ /* Get the device MAC address */
+ static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
+ {
+ 	char buf[20];
+-	if (nvram_getenv("et0macaddr", buf, sizeof(buf)) < 0)
++	if (bcm47xx_nvram_getenv("et0macaddr", buf, sizeof(buf)) < 0)
+ 		return;
+-	nvram_parse_macaddr(buf, macaddr);
++	bcm47xx_nvram_parse_macaddr(buf, macaddr);
+ }
+ #else
+ static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)