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bcm53xx: backport NVRAM driver sent upstream 

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43612 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Rafał Miłecki 2014-12-10 21:50:57 +00:00
parent 884483dbd5
commit 935b8f6e25
13 changed files with 503 additions and 756 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
target/linux/bcm53xx/files/drivers/firmware/broadcom/Kconfig Normal file
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@ -0,0 +1,11 @@
config BCM47XX_NVRAM
bool "Broadcom NVRAM driver"
depends on BCM47XX || ARCH_BCM_5301X
help
Broadcom home routers contain flash partition called "nvram" with all
important hardware configuration as well as some minor user setup.
NVRAM partition contains a text-like data representing name=value
pairs.
This driver provides an easy way to get value of requested parameter.
It simply reads content of NVRAM and parses it. It doesn't control any
hardware part itself.

1
target/linux/bcm53xx/files/drivers/firmware/broadcom/Makefile Normal file
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@ -0,0 +1 @@
obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx_nvram.o

232
target/linux/bcm53xx/files/drivers/firmware/broadcom/bcm47xx_nvram.c Normal file
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@ -0,0 +1,232 @@
/*
* BCM947xx nvram variable access
*
* Copyright (C) 2005 Broadcom Corporation
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
* 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
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/mtd/mtd.h>
#include <linux/bcm47xx_nvram.h>
#define NVRAM_MAGIC 0x48534C46 /* 'FLSH' */
#define NVRAM_SPACE 0x8000
#define NVRAM_MAX_GPIO_ENTRIES 32
#define NVRAM_MAX_GPIO_VALUE_LEN 30
#define FLASH_MIN 0x00020000 /* Minimum flash size */
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 */
};
static char nvram_buf[NVRAM_SPACE];
static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
static u32 find_nvram_size(void __iomem *end)
{
struct nvram_header __iomem *header;
int i;
for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) {
header = (struct nvram_header *)(end - nvram_sizes[i]);
if (header->magic == NVRAM_MAGIC)
return nvram_sizes[i];
}
return 0;
}
/* Probe for NVRAM header */
static int nvram_find_and_copy(void __iomem *iobase, u32 lim)
{
struct nvram_header __iomem *header;
int i;
u32 off;
u32 *src, *dst;
u32 size;
if (nvram_buf[0]) {
pr_warn("nvram already initialized\n");
return -EEXIST;
}
/* TODO: when nvram is on nand flash check for bad blocks first. */
off = FLASH_MIN;
while (off <= lim) {
/* Windowed flash access */
size = find_nvram_size(iobase + off);
if (size) {
header = (struct nvram_header *)(iobase + off - size);
goto found;
}
off <<= 1;
}
/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
header = (struct nvram_header *)(iobase + 4096);
if (header->magic == NVRAM_MAGIC) {
size = NVRAM_SPACE;
goto found;
}
header = (struct nvram_header *)(iobase + 1024);
if (header->magic == NVRAM_MAGIC) {
size = NVRAM_SPACE;
goto found;
}
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++ = __raw_readl(src++);
for (; i < header->len && i < NVRAM_SPACE && i < size; i += 4)
*dst++ = readl(src++);
return 0;
}
/*
* On bcm47xx we need access to the NVRAM very early, so we can't use mtd
* subsystem to access flash. We can't even use platform device / driver to
* store memory offset.
* To handle this we provide following symbol. It's supposed to be called as
* soon as we get info about flash device, before any NVRAM entry is needed.
*/
int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
{
void __iomem *iobase;
int err;
iobase = ioremap_nocache(base, lim);
if (!iobase)
return -ENOMEM;
err = nvram_find_and_copy(iobase, lim);
iounmap(iobase);
return err;
}
static int nvram_init(void)
{
#ifdef CONFIG_MTD
struct mtd_info *mtd;
struct nvram_header header;
size_t bytes_read;
int err, i;
mtd = get_mtd_device_nm("nvram");
if (IS_ERR(mtd))
return -ENODEV;
for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) {
loff_t from = mtd->size - nvram_sizes[i];
if (from < 0)
continue;
err = mtd_read(mtd, from, sizeof(header), &bytes_read,
(uint8_t *)&header);
if (!err && header.magic == NVRAM_MAGIC) {
u8 *dst = (uint8_t *)nvram_buf;
size_t len = header.len;
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);
len = NVRAM_SPACE;
}
err = mtd_read(mtd, from, len, &bytes_read, dst);
if (err)
return err;
return 0;
}
}
#endif
return -ENXIO;
}
int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len)
{
char *var, *value, *end, *eq;
int data_left, err;
if (!name)
return -EINVAL;
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)];
end = nvram_buf + sizeof(nvram_buf) - 2;
end[0] = '\0';
end[1] = '\0';
for (; *var; var = value + strlen(value) + 1) {
data_left = end - var;
eq = strnchr(var, data_left, '=');
if (!eq)
break;
value = eq + 1;
if (eq - var == strlen(name) &&
strncmp(var, name, eq - var) == 0)
return snprintf(val, val_len, "%s", value);
}
return -ENOENT;
}
EXPORT_SYMBOL(bcm47xx_nvram_getenv);
int bcm47xx_nvram_gpio_pin(const char *name)
{
int i, err;
char nvram_var[] = "gpioXX";
char buf[NVRAM_MAX_GPIO_VALUE_LEN];
/* TODO: Optimize it to don't call getenv so many times */
for (i = 0; i < NVRAM_MAX_GPIO_ENTRIES; i++) {
err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
if (err <= 0)
continue;
err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
if (err <= 0)
continue;
if (!strcmp(name, buf))
return i;
}
return -ENOENT;
}
EXPORT_SYMBOL(bcm47xx_nvram_gpio_pin);
MODULE_LICENSE("GPLv2");

217
target/linux/bcm53xx/files/drivers/misc/bcm47xx-nvram.c
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@ -1,217 +0,0 @@
/*
* BCM947xx nvram variable access
*
* Copyright (C) 2005 Broadcom Corporation
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2010-2014 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
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/of_address.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/bcm47xx_nvram.h>
#define NVRAM_HEADER 0x48534C46 /* 'FLSH' */
#define NVRAM_SPACE 0x8000
#define FLASH_MIN 0x00020000 /* Minimum flash size */
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 */
};
struct bcm47xx_nvram {
size_t nvram_len;
char *nvram_buf;
};
static struct bcm47xx_nvram *nvram = NULL;
static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
static u32 find_nvram_size(void __iomem *end)
{
struct nvram_header __iomem *header;
int i;
for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) {
header = (struct nvram_header __iomem *)(end - nvram_sizes[i]);
if (__raw_readl(&header->magic) == NVRAM_HEADER)
return nvram_sizes[i];
}
return 0;
}
/* Probe for NVRAM header */
static int nvram_find_and_copy(struct device *dev, void __iomem *base,
size_t len, char **nvram_buf,
size_t *nvram_len)
{
struct nvram_header __iomem *header;
int i;
u32 off;
u32 *dst;
__le32 __iomem *src;
u32 size;
/* TODO: when nvram is on nand flash check for bad blocks first. */
off = FLASH_MIN;
while (off <= len) {
/* Windowed flash access */
size = find_nvram_size(base + off);
if (size) {
header = (struct nvram_header __iomem *)
(base + off - size);
goto found;
}
off += 0x10000;
}
/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
header = (struct nvram_header __iomem *)(base + 4096);
if (__raw_readl(&header->magic) == NVRAM_HEADER) {
size = NVRAM_SPACE;
goto found;
}
header = (struct nvram_header __iomem *)(base + 1024);
if (__raw_readl(&header->magic) == NVRAM_HEADER) {
size = NVRAM_SPACE;
goto found;
}
*nvram_buf = NULL;
*nvram_len = 0;
pr_err("no nvram found\n");
return -ENXIO;
found:
if (readl(&header->len) > size)
pr_err("The nvram size accoridng to the header seems to be bigger than the partition on flash\n");
*nvram_len = min_t(u32, readl(&header->len), size);
*nvram_buf = devm_kzalloc(dev, *nvram_len, GFP_KERNEL);
if (!*nvram_buf)
return -ENOMEM;
src = (__le32 __iomem *) header;
dst = (u32 *) *nvram_buf;
for (i = 0; i < sizeof(struct nvram_header); i += 4)
*dst++ = __raw_readl(src++);
for (; i < *nvram_len; i += 4)
*dst++ = readl(src++);
return 0;
}
int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len)
{
char *var, *value, *end, *eq;
if (!name || !nvram || !nvram->nvram_len)
return -EINVAL;
/* Look for name=value and return value */
var = nvram->nvram_buf + sizeof(struct nvram_header);
end = nvram->nvram_buf + nvram->nvram_len - 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) {
return snprintf(val, val_len, "%s", value);
}
}
return -ENOENT;
}
EXPORT_SYMBOL(bcm47xx_nvram_getenv);
int bcm47xx_nvram_gpio_pin(const char *name)
{
int i, err;
char nvram_var[10];
char buf[30];
for (i = 0; i < 32; i++) {
err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
if (err <= 0)
continue;
err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
if (err <= 0)
continue;
if (!strcmp(name, buf))
return i;
}
return -ENOENT;
}
EXPORT_SYMBOL(bcm47xx_nvram_gpio_pin);
static int bcm47xx_nvram_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
int err;
struct resource flash_mem;
void __iomem *mmio;
/* Alloc */
nvram = devm_kzalloc(dev, sizeof(*nvram), GFP_KERNEL);
if (!nvram)
return -ENOMEM;
err = of_address_to_resource(np, 0, &flash_mem);
if (err)
return err;
mmio = ioremap_nocache(flash_mem.start, resource_size(&flash_mem));
if (!mmio)
return -ENOMEM;
err = nvram_find_and_copy(dev, mmio, resource_size(&flash_mem),
&nvram->nvram_buf, &nvram->nvram_len);
if (err)
goto err_unmap_mmio;
err_unmap_mmio:
iounmap(mmio);
return err;
}
static const struct of_device_id bcm47xx_nvram_of_match_table[] = {
{ .compatible = "brcm,bcm47xx-nvram", },
{},
};
MODULE_DEVICE_TABLE(of, mvebu_pcie_of_match_table);
static struct platform_driver bcm47xx_nvram_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "bcm47xx-nvram",
.of_match_table = bcm47xx_nvram_of_match_table,
/* driver unloading/unbinding currently not supported */
.suppress_bind_attrs = true,
},
.probe = bcm47xx_nvram_probe,
};
module_platform_driver(bcm47xx_nvram_driver);
MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");
MODULE_LICENSE("GPLv2");

22
target/linux/bcm53xx/files/include/linux/bcm47xx_nvram.h
View File

@ -1,8 +1,4 @@
/*
* Copyright (C) 2005, Broadcom Corporation
* Copyright (C) 2006, Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2014 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
* Free Software Foundation; either version 2 of the License, or (at your
@ -15,20 +11,24 @@
#include <linux/types.h>
#include <linux/kernel.h>
#ifdef CONFIG_BCM47XX
#ifdef CONFIG_BCM47XX_NVRAM
int bcm47xx_nvram_init_from_mem(u32 base, u32 lim);
int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len);
int bcm47xx_nvram_gpio_pin(const char *name);
#else
static inline int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
{
return -ENOTSUPP;
};
static inline int bcm47xx_nvram_getenv(const char *name, char *val,
size_t val_len)
{
return -ENXIO;
}
return -ENOTSUPP;
};
static inline int bcm47xx_nvram_gpio_pin(const char *name)
{
return -ENXIO;
}
return -ENOTSUPP;
};
#endif
#endif /* __BCM47XX_NVRAM_H */

154
target/linux/bcm53xx/patches-3.14/110-bcm47xx-move-the-nvram-header-file-into-common-space.patch
View File

@ -1,154 +0,0 @@
From 7063a1583166abe1a9cefed38c2f53a0e14a0005 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 4 May 2014 16:35:42 +0200
Subject: [PATCH 01/17] MIPS: BCM47XX: move the nvram header file into common
space
Moving mach-bcm47xx/bcm47xx_nvram.h to include/linux/bcm47xx_nvram.h
makes it possible to reuse this header on the ARM based bcm47xx/bcm53xx
SoCs (e.g. BCM5301X devices). Broadcom uses ARM CPUs in their new SoC
form the bcm47xx and bcm53xx line, but many other things like nvram
stayed the same.
This is a preparation for adding a new nvram driver, which can be used
by the ARM SoC and the MIPS SoC code. The device drivers accessing
nvram do not have to care about ARM or MIPS SoC version.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
arch/mips/bcm47xx/board.c | 2 +-
arch/mips/bcm47xx/nvram.c | 2 +-
arch/mips/bcm47xx/setup.c | 2 +-
arch/mips/bcm47xx/sprom.c | 2 +-
arch/mips/bcm47xx/time.c | 2 +-
arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h | 53 -----------------
drivers/net/ethernet/broadcom/b44.c | 8 +--
drivers/net/ethernet/broadcom/bgmac.c | 2 +-
drivers/ssb/driver_chipcommon_pmu.c | 6 +-
include/linux/bcm47xx_nvram.h | 66 ++++++++++++++++++++++
10 files changed, 74 insertions(+), 71 deletions(-)
delete mode 100644 arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h
create mode 100644 include/linux/bcm47xx_nvram.h
--- a/arch/mips/bcm47xx/board.c
+++ b/arch/mips/bcm47xx/board.c
@@ -2,7 +2,7 @@
#include <linux/export.h>
#include <linux/string.h>
#include <bcm47xx_board.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
struct bcm47xx_board_type {
const enum bcm47xx_board board;
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -17,7 +17,7 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <asm/addrspace.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
#include <asm/mach-bcm47xx/bcm47xx.h>
static char nvram_buf[NVRAM_SPACE];
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -42,7 +42,7 @@
#include <asm/reboot.h>
#include <asm/time.h>
#include <bcm47xx.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
#include <bcm47xx_board.h>
union bcm47xx_bus bcm47xx_bus;
--- a/arch/mips/bcm47xx/sprom.c
+++ b/arch/mips/bcm47xx/sprom.c
@@ -27,7 +27,7 @@
*/
#include <bcm47xx.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
static void create_key(const char *prefix, const char *postfix,
const char *name, char *buf, int len)
--- a/arch/mips/bcm47xx/time.c
+++ b/arch/mips/bcm47xx/time.c
@@ -27,7 +27,7 @@
#include <linux/ssb/ssb.h>
#include <asm/time.h>
#include <bcm47xx.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
#include <bcm47xx_board.h>
void __init plat_time_init(void)
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -31,6 +31,7 @@
#include <linux/ssb/ssb.h>
#include <linux/slab.h>
#include <linux/phy.h>
+#include <linux/bcm47xx_nvram.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -399,8 +400,6 @@ static void b44_set_flow_ctrl(struct b44
__b44_set_flow_ctrl(bp, pause_enab);
}
-#ifdef CONFIG_BCM47XX
-#include <bcm47xx_nvram.h>
static void b44_wap54g10_workaround(struct b44 *bp)
{
char buf[20];
@@ -429,11 +428,6 @@ static void b44_wap54g10_workaround(stru
error:
pr_warning("PHY: cannot reset MII transceiver isolate bit\n");
}
-#else
-static inline void b44_wap54g10_workaround(struct b44 *bp)
-{
-}
-#endif
static int b44_setup_phy(struct b44 *bp)
{
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -17,7 +17,7 @@
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/platform_data/b53.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
static const struct bcma_device_id bgmac_bcma_tbl[] = {
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS),
--- a/drivers/ssb/driver_chipcommon_pmu.c
+++ b/drivers/ssb/driver_chipcommon_pmu.c
@@ -13,9 +13,7 @@
#include <linux/ssb/ssb_driver_chipcommon.h>
#include <linux/delay.h>
#include <linux/export.h>
-#ifdef CONFIG_BCM47XX
-#include <bcm47xx_nvram.h>
-#endif
+#include <linux/bcm47xx_nvram.h>
#include "ssb_private.h"
@@ -320,11 +318,9 @@ static void ssb_pmu_pll_init(struct ssb_
u32 crystalfreq = 0; /* in kHz. 0 = keep default freq. */
if (bus->bustype == SSB_BUSTYPE_SSB) {
-#ifdef CONFIG_BCM47XX
char buf[20];
if (bcm47xx_nvram_getenv("xtalfreq", buf, sizeof(buf)) >= 0)
crystalfreq = simple_strtoul(buf, NULL, 0);
-#endif
}
switch (bus->chip_id) {

119
target/linux/bcm53xx/patches-3.14/110-firmware-backport-NVRAM-driver.patch Normal file
View File

@ -0,0 +1,119 @@
From 0509f6dcc46d10ea4bb8c70494dc7ae11bcb3f01 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Wed, 10 Dec 2014 21:14:10 +0100
Subject: [PATCH] firmware: backport NVRAM driver
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
arch/arm/Kconfig | 2 ++
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/broadcom/bcm47xx_nvram.c | 3 ++-
drivers/net/ethernet/broadcom/b44.c | 2 +-
drivers/net/ethernet/broadcom/bgmac.c | 2 +-
drivers/ssb/driver_chipcommon_pmu.c | 2 +-
7 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4733d32..ab18030 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2286,6 +2286,8 @@ source "net/Kconfig"
source "drivers/Kconfig"
+source "drivers/firmware/Kconfig"
+
source "fs/Kconfig"
source "arch/arm/Kconfig.debug"
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 4198388..ffbc9e4 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -132,6 +132,7 @@ config ISCSI_IBFT
detect iSCSI boot parameters dynamically during system boot, say Y.
Otherwise, say N.
+source "drivers/firmware/broadcom/Kconfig"
source "drivers/firmware/google/Kconfig"
source "drivers/firmware/efi/Kconfig"
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 5373dc5..e251f2b 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_ISCSI_IBFT_FIND) += iscsi_ibft_find.o
obj-$(CONFIG_ISCSI_IBFT) += iscsi_ibft.o
obj-$(CONFIG_FIRMWARE_MEMMAP) += memmap.o
+obj-y += broadcom/
obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_UEFI_CPER) += efi/
diff --git a/drivers/firmware/broadcom/bcm47xx_nvram.c b/drivers/firmware/broadcom/bcm47xx_nvram.c
index b6e1cc7..8ca7358 100644
--- a/drivers/firmware/broadcom/bcm47xx_nvram.c
+++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
@@ -11,6 +11,7 @@
* option) any later version.
*/
+#include <linux/io.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
@@ -34,7 +35,7 @@ struct nvram_header {
};
static char nvram_buf[NVRAM_SPACE];
-static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
+static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000, 0x160000};
static u32 find_nvram_size(void __iomem *end)
{
diff --git a/drivers/net/ethernet/broadcom/b44.c b/drivers/net/ethernet/broadcom/b44.c
index 8a7bf7d..bf3bcd6 100644
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -400,7 +400,7 @@ static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
}
#ifdef CONFIG_BCM47XX
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
static void b44_wap54g10_workaround(struct b44 *bp)
{
char buf[20];
diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 34c7bc8..943707f 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -17,7 +17,7 @@
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/platform_data/b53.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
static const struct bcma_device_id bgmac_bcma_tbl[] = {
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS),
diff --git a/drivers/ssb/driver_chipcommon_pmu.c b/drivers/ssb/driver_chipcommon_pmu.c
index 1173a09..0942841 100644
--- 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 <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
#endif
#include "ssb_private.h"
--
1.8.4.5

104
target/linux/bcm53xx/patches-3.14/111-bcm47xx-nvram-add-new-nvram-driver-with-dt-support.patch
View File

@ -1,104 +0,0 @@
From 71a6bff8656a1713615ffdd9139a83d65ba46c6d Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sat, 3 May 2014 22:54:59 +0200
Subject: [PATCH 02/17] bcm47xx-nvram: add new broadcom nvram driver with dt
support
This adds a new driver which searches at a given memory range for a
nvram like it is used on the bcm47xx and bcm53xx SoCs with ARM and MIPS
CPUs. This driver provides acces to this nvram to other device in the
device tree. You have to specify the memory ranges where the content of
the flash chip is memory mapped and this driver will search there for
some nvram and parse it. Other drivers can use this driver to access the
device nvram. The nvram is used to store board configurations like the
mac addresses, the switch configuration and the calibration data for
the wifi devices.
This was copied from arch/mips/bcm47xx/nvram.c and modified to interact
with device tree. My plan is to make the MIPS bcm47xx also use this new
driver some time later.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
.../devicetree/bindings/misc/bcm47xx-nvram.txt | 19 ++
arch/mips/bcm47xx/board.c | 40 ++--
arch/mips/bcm47xx/nvram.c | 7 +-
arch/mips/bcm47xx/setup.c | 4 +-
arch/mips/bcm47xx/sprom.c | 4 +-
arch/mips/bcm47xx/time.c | 2 +-
drivers/misc/Kconfig | 5 +
drivers/misc/Makefile | 1 +
drivers/misc/bcm47xx-nvram.c | 215 +++++++++++++++++++++
drivers/net/ethernet/broadcom/b44.c | 2 +-
drivers/net/ethernet/broadcom/bgmac.c | 5 +-
drivers/ssb/driver_chipcommon_pmu.c | 3 +-
include/linux/bcm47xx_nvram.h | 17 +-
13 files changed, 286 insertions(+), 38 deletions(-)
create mode 100644 Documentation/devicetree/bindings/misc/bcm47xx-nvram.txt
create mode 100644 drivers/misc/bcm47xx-nvram.c
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/bcm47xx-nvram.txt
@@ -0,0 +1,19 @@
+Broadcom bcm47xx/bcm53xx nvram access driver
+
+This driver provides access to the nvram for other drivers.
+
+Required properties:
+
+- compatible : brcm,bcm47xx-nvram
+
+- reg : iomem address range
+
+On NorthStar ARM SoCs the NAND flash is available at 0x1c000000 and the
+NOR flash is at 0x1e000000
+
+Example:
+
+nvram0: nvram@0 {
+ compatible = "brcm,bcm47xx-nvram";
+ reg = <0x1c000000 0x01000000>;
+};
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -515,6 +515,11 @@ config SRAM
the genalloc API. It is supposed to be used for small on-chip SRAM
areas found on many SoCs.
+config BCM47XX_NVRAM
+ tristate "BCM47XX nvram driver"
+ help
+ This adds support for the brcm47xx nvram driver.
+
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -54,3 +54,4 @@ obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lat
obj-$(CONFIG_SRAM) += sram.o
obj-y += mic/
obj-$(CONFIG_GENWQE) += genwqe/
+obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx-nvram.o
--- a/include/linux/bcm47xx_nvram.h
+++ b/include/linux/bcm47xx_nvram.h
@@ -15,7 +15,7 @@
#include <linux/types.h>
#include <linux/kernel.h>
-#ifdef CONFIG_BCM47XX
+#if defined(CONFIG_BCM47XX) || defined(CONFIG_BCM47XX_NVRAM)
int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len);
int bcm47xx_nvram_gpio_pin(const char *name);
--- a/drivers/misc/bcm47xx-nvram.c
+++ b/drivers/misc/bcm47xx-nvram.c
@@ -28,7 +28,7 @@
struct nvram_header {
u32 magic;
- u32 len;
+ __le32 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 */

10
target/linux/bcm53xx/patches-3.14/112-bcm53xx-sprom-add-sprom-driver.patch
View File

@ -42,9 +42,9 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+};
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -520,6 +520,17 @@ config BCM47XX_NVRAM
help
This adds support for the brcm47xx nvram driver.
@@ -515,6 +515,17 @@ config SRAM
the genalloc API. It is supposed to be used for small on-chip SRAM
areas found on many SoCs.
+config BCM47XX_SPROM
+ tristate "BCM47XX sprom driver"
@ -62,8 +62,8 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
source "drivers/misc/cb710/Kconfig"
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -55,3 +55,4 @@ obj-$(CONFIG_SRAM) += sram.o
@@ -54,3 +54,4 @@ obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lat
obj-$(CONFIG_SRAM) += sram.o
obj-y += mic/
obj-$(CONFIG_GENWQE) += genwqe/
obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx-nvram.o
+obj-$(CONFIG_BCM47XX_SPROM) += bcm47xx-sprom.o

154
target/linux/bcm53xx/patches-3.18/110-bcm47xx-move-the-nvram-header-file-into-common-space.patch
View File

@ -1,154 +0,0 @@
From 7063a1583166abe1a9cefed38c2f53a0e14a0005 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 4 May 2014 16:35:42 +0200
Subject: [PATCH 01/17] MIPS: BCM47XX: move the nvram header file into common
space
Moving mach-bcm47xx/bcm47xx_nvram.h to include/linux/bcm47xx_nvram.h
makes it possible to reuse this header on the ARM based bcm47xx/bcm53xx
SoCs (e.g. BCM5301X devices). Broadcom uses ARM CPUs in their new SoC
form the bcm47xx and bcm53xx line, but many other things like nvram
stayed the same.
This is a preparation for adding a new nvram driver, which can be used
by the ARM SoC and the MIPS SoC code. The device drivers accessing
nvram do not have to care about ARM or MIPS SoC version.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
arch/mips/bcm47xx/board.c | 2 +-
arch/mips/bcm47xx/nvram.c | 2 +-
arch/mips/bcm47xx/setup.c | 2 +-
arch/mips/bcm47xx/sprom.c | 2 +-
arch/mips/bcm47xx/time.c | 2 +-
arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h | 53 -----------------
drivers/net/ethernet/broadcom/b44.c | 8 +--
drivers/net/ethernet/broadcom/bgmac.c | 2 +-
drivers/ssb/driver_chipcommon_pmu.c | 6 +-
include/linux/bcm47xx_nvram.h | 66 ++++++++++++++++++++++
10 files changed, 74 insertions(+), 71 deletions(-)
delete mode 100644 arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h
create mode 100644 include/linux/bcm47xx_nvram.h
--- a/arch/mips/bcm47xx/board.c
+++ b/arch/mips/bcm47xx/board.c
@@ -2,7 +2,7 @@
#include <linux/export.h>
#include <linux/string.h>
#include <bcm47xx_board.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
struct bcm47xx_board_type {
const enum bcm47xx_board board;
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -17,7 +17,7 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <asm/addrspace.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
#include <asm/mach-bcm47xx/bcm47xx.h>
static char nvram_buf[NVRAM_SPACE];
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -42,7 +42,7 @@
#include <asm/reboot.h>
#include <asm/time.h>
#include <bcm47xx.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
#include <bcm47xx_board.h>
union bcm47xx_bus bcm47xx_bus;
--- a/arch/mips/bcm47xx/sprom.c
+++ b/arch/mips/bcm47xx/sprom.c
@@ -27,7 +27,7 @@
*/
#include <bcm47xx.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
#include <linux/if_ether.h>
#include <linux/etherdevice.h>
--- a/arch/mips/bcm47xx/time.c
+++ b/arch/mips/bcm47xx/time.c
@@ -27,7 +27,7 @@
#include <linux/ssb/ssb.h>
#include <asm/time.h>
#include <bcm47xx.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
#include <bcm47xx_board.h>
void __init plat_time_init(void)
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -31,6 +31,7 @@
#include <linux/ssb/ssb.h>
#include <linux/slab.h>
#include <linux/phy.h>
+#include <linux/bcm47xx_nvram.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -399,8 +400,6 @@ static void b44_set_flow_ctrl(struct b44
__b44_set_flow_ctrl(bp, pause_enab);
}
-#ifdef CONFIG_BCM47XX
-#include <bcm47xx_nvram.h>
static void b44_wap54g10_workaround(struct b44 *bp)
{
char buf[20];
@@ -429,11 +428,6 @@ static void b44_wap54g10_workaround(stru
error:
pr_warn("PHY: cannot reset MII transceiver isolate bit\n");
}
-#else
-static inline void b44_wap54g10_workaround(struct b44 *bp)
-{
-}
-#endif
static int b44_setup_phy(struct b44 *bp)
{
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -17,7 +17,7 @@
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/platform_data/b53.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
static const struct bcma_device_id bgmac_bcma_tbl[] = {
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS),
--- a/drivers/ssb/driver_chipcommon_pmu.c
+++ b/drivers/ssb/driver_chipcommon_pmu.c
@@ -13,9 +13,7 @@
#include <linux/ssb/ssb_driver_chipcommon.h>
#include <linux/delay.h>
#include <linux/export.h>
-#ifdef CONFIG_BCM47XX
-#include <bcm47xx_nvram.h>
-#endif
+#include <linux/bcm47xx_nvram.h>
#include "ssb_private.h"
@@ -320,11 +318,9 @@ static void ssb_pmu_pll_init(struct ssb_
u32 crystalfreq = 0; /* in kHz. 0 = keep default freq. */
if (bus->bustype == SSB_BUSTYPE_SSB) {
-#ifdef CONFIG_BCM47XX
char buf[20];
if (bcm47xx_nvram_getenv("xtalfreq", buf, sizeof(buf)) >= 0)
crystalfreq = simple_strtoul(buf, NULL, 0);
-#endif
}
switch (bus->chip_id) {

119
target/linux/bcm53xx/patches-3.18/110-firmware-backport-NVRAM-driver.patch Normal file
View File

@ -0,0 +1,119 @@
From 0509f6dcc46d10ea4bb8c70494dc7ae11bcb3f01 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Wed, 10 Dec 2014 21:14:10 +0100
Subject: [PATCH] firmware: backport NVRAM driver
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
arch/arm/Kconfig | 2 ++
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/broadcom/bcm47xx_nvram.c | 3 ++-
drivers/net/ethernet/broadcom/b44.c | 2 +-
drivers/net/ethernet/broadcom/bgmac.c | 2 +-
drivers/ssb/driver_chipcommon_pmu.c | 2 +-
7 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4733d32..ab18030 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2286,6 +2286,8 @@ source "net/Kconfig"
source "drivers/Kconfig"
+source "drivers/firmware/Kconfig"
+
source "fs/Kconfig"
source "arch/arm/Kconfig.debug"
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 4198388..ffbc9e4 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -132,6 +132,7 @@ config ISCSI_IBFT
detect iSCSI boot parameters dynamically during system boot, say Y.
Otherwise, say N.
+source "drivers/firmware/broadcom/Kconfig"
source "drivers/firmware/google/Kconfig"
source "drivers/firmware/efi/Kconfig"
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 5373dc5..e251f2b 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_ISCSI_IBFT_FIND) += iscsi_ibft_find.o
obj-$(CONFIG_ISCSI_IBFT) += iscsi_ibft.o
obj-$(CONFIG_FIRMWARE_MEMMAP) += memmap.o
+obj-y += broadcom/
obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_UEFI_CPER) += efi/
diff --git a/drivers/firmware/broadcom/bcm47xx_nvram.c b/drivers/firmware/broadcom/bcm47xx_nvram.c
index b6e1cc7..8ca7358 100644
--- a/drivers/firmware/broadcom/bcm47xx_nvram.c
+++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
@@ -11,6 +11,7 @@
* option) any later version.
*/
+#include <linux/io.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
@@ -34,7 +35,7 @@ struct nvram_header {
};
static char nvram_buf[NVRAM_SPACE];
-static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
+static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000, 0x160000};
static u32 find_nvram_size(void __iomem *end)
{
diff --git a/drivers/net/ethernet/broadcom/b44.c b/drivers/net/ethernet/broadcom/b44.c
index 8a7bf7d..bf3bcd6 100644
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -400,7 +400,7 @@ static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
}
#ifdef CONFIG_BCM47XX
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
static void b44_wap54g10_workaround(struct b44 *bp)
{
char buf[20];
diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 34c7bc8..943707f 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -17,7 +17,7 @@
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/platform_data/b53.h>
-#include <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
static const struct bcma_device_id bgmac_bcma_tbl[] = {
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS),
diff --git a/drivers/ssb/driver_chipcommon_pmu.c b/drivers/ssb/driver_chipcommon_pmu.c
index 1173a09..0942841 100644
--- 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 <bcm47xx_nvram.h>
+#include <linux/bcm47xx_nvram.h>
#endif
#include "ssb_private.h"
--
1.8.4.5

106
target/linux/bcm53xx/patches-3.18/111-bcm47xx-nvram-add-new-nvram-driver-with-dt-support.patch
View File

@ -1,106 +0,0 @@
From 71a6bff8656a1713615ffdd9139a83d65ba46c6d Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sat, 3 May 2014 22:54:59 +0200
Subject: [PATCH 02/17] bcm47xx-nvram: add new broadcom nvram driver with dt
support
This adds a new driver which searches at a given memory range for a
nvram like it is used on the bcm47xx and bcm53xx SoCs with ARM and MIPS
CPUs. This driver provides acces to this nvram to other device in the
device tree. You have to specify the memory ranges where the content of
the flash chip is memory mapped and this driver will search there for
some nvram and parse it. Other drivers can use this driver to access the
device nvram. The nvram is used to store board configurations like the
mac addresses, the switch configuration and the calibration data for
the wifi devices.
This was copied from arch/mips/bcm47xx/nvram.c and modified to interact
with device tree. My plan is to make the MIPS bcm47xx also use this new
driver some time later.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
.../devicetree/bindings/misc/bcm47xx-nvram.txt | 19 ++
arch/mips/bcm47xx/board.c | 40 ++--
arch/mips/bcm47xx/nvram.c | 7 +-
arch/mips/bcm47xx/setup.c | 4 +-
arch/mips/bcm47xx/sprom.c | 4 +-
arch/mips/bcm47xx/time.c | 2 +-
drivers/misc/Kconfig | 5 +
drivers/misc/Makefile | 1 +
drivers/misc/bcm47xx-nvram.c | 215 +++++++++++++++++++++
drivers/net/ethernet/broadcom/b44.c | 2 +-
drivers/net/ethernet/broadcom/bgmac.c | 5 +-
drivers/ssb/driver_chipcommon_pmu.c | 3 +-
include/linux/bcm47xx_nvram.h | 17 +-
13 files changed, 286 insertions(+), 38 deletions(-)
create mode 100644 Documentation/devicetree/bindings/misc/bcm47xx-nvram.txt
create mode 100644 drivers/misc/bcm47xx-nvram.c
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/bcm47xx-nvram.txt
@@ -0,0 +1,19 @@
+Broadcom bcm47xx/bcm53xx nvram access driver
+
+This driver provides access to the nvram for other drivers.
+
+Required properties:
+
+- compatible : brcm,bcm47xx-nvram
+
+- reg : iomem address range
+
+On NorthStar ARM SoCs the NAND flash is available at 0x1c000000 and the
+NOR flash is at 0x1e000000
+
+Example:
+
+nvram0: nvram@0 {
+ compatible = "brcm,bcm47xx-nvram";
+ reg = <0x1c000000 0x01000000>;
+};
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -515,6 +515,11 @@ config VEXPRESS_SYSCFG
bus. System Configuration interface is one of the possible means
of generating transactions on this bus.
+config BCM47XX_NVRAM
+ tristate "BCM47XX nvram driver"
+ help
+ This adds support for the brcm47xx nvram driver.
+
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -56,3 +56,4 @@ obj-$(CONFIG_GENWQE) += genwqe/
obj-$(CONFIG_ECHO) += echo/
obj-$(CONFIG_VEXPRESS_SYSCFG) += vexpress-syscfg.o
obj-$(CONFIG_CXL_BASE) += cxl/
+obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx-nvram.o
--- a/include/linux/bcm47xx_nvram.h
+++ b/include/linux/bcm47xx_nvram.h
@@ -14,8 +14,8 @@
#include <linux/types.h>
#include <linux/kernel.h>
-
-#ifdef CONFIG_BCM47XX
+
+#if defined(CONFIG_BCM47XX) || defined(CONFIG_BCM47XX_NVRAM)
int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len);
int bcm47xx_nvram_gpio_pin(const char *name);
--- a/drivers/misc/bcm47xx-nvram.c
+++ b/drivers/misc/bcm47xx-nvram.c
@@ -28,7 +28,7 @@
struct nvram_header {
u32 magic;
- u32 len;
+ __le32 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 */

10
target/linux/bcm53xx/patches-3.18/112-bcm53xx-sprom-add-sprom-driver.patch
View File

@ -42,9 +42,9 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+};
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -520,6 +520,17 @@ config BCM47XX_NVRAM
help
This adds support for the brcm47xx nvram driver.
@@ -515,6 +515,17 @@ config VEXPRESS_SYSCFG
bus. System Configuration interface is one of the possible means
of generating transactions on this bus.
+config BCM47XX_SPROM
+ tristate "BCM47XX sprom driver"
@ -62,8 +62,8 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
source "drivers/misc/cb710/Kconfig"
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -57,3 +57,4 @@ obj-$(CONFIG_ECHO) += echo/
@@ -56,3 +56,4 @@ obj-$(CONFIG_GENWQE) += genwqe/
obj-$(CONFIG_ECHO) += echo/
obj-$(CONFIG_VEXPRESS_SYSCFG) += vexpress-syscfg.o
obj-$(CONFIG_CXL_BASE) += cxl/
obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx-nvram.o
+obj-$(CONFIG_BCM47XX_SPROM) += bcm47xx-sprom.o