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Diffstat (limited to 'target/linux/bcm53xx/patches-3.14/111-bcm47xx-nvram-add-new-nvram-driver-with-dt-support.patch')
-rw-r--r--target/linux/bcm53xx/patches-3.14/111-bcm47xx-nvram-add-new-nvram-driver-with-dt-support.patch520
1 files changed, 520 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-3.14/111-bcm47xx-nvram-add-new-nvram-driver-with-dt-support.patch b/target/linux/bcm53xx/patches-3.14/111-bcm47xx-nvram-add-new-nvram-driver-with-dt-support.patch
new file mode 100644
index 0000000..a53e86d
--- /dev/null
+++ b/target/linux/bcm53xx/patches-3.14/111-bcm47xx-nvram-add-new-nvram-driver-with-dt-support.patch
@@ -0,0 +1,520 @@
+From 60a413ed5bc7917f1612df441240f458163b10c1 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 03/15] bcm47xx-nvram: add new nvram driver with dt support
+
+This adds a new nvrm driver which uses device tree to provide nvram
+access to other drivers. You have to specify the memory ranges where
+the flash chip is 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 address and also for configuration values in the vendor firmware.
+---
+ arch/mips/bcm47xx/board.c | 36 +++---
+ 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 | 211 ++++++++++++++++++++++++++++++++++
+ drivers/net/ethernet/broadcom/b44.c | 2 +-
+ drivers/net/ethernet/broadcom/bgmac.c | 4 +-
+ drivers/ssb/driver_chipcommon_pmu.c | 2 +-
+ include/linux/bcm47xx_nvram.h | 16 ++-
+ 12 files changed, 259 insertions(+), 35 deletions(-)
+ create mode 100644 drivers/misc/bcm47xx-nvram.c
+
+--- a/arch/mips/bcm47xx/board.c
++++ b/arch/mips/bcm47xx/board.c
+@@ -196,50 +196,50 @@ static __init const struct bcm47xx_board
+ const struct bcm47xx_board_type_list2 *e2;
+ const struct bcm47xx_board_type_list3 *e3;
+
+- if (bcm47xx_nvram_getenv("model_name", buf1, sizeof(buf1)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "model_name", buf1, sizeof(buf1)) >= 0) {
+ for (e1 = bcm47xx_board_list_model_name; e1->value1; e1++) {
+ if (!strcmp(buf1, e1->value1))
+ return &e1->board;
+ }
+ }
+
+- if (bcm47xx_nvram_getenv("model_no", buf1, sizeof(buf1)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "model_no", buf1, sizeof(buf1)) >= 0) {
+ for (e1 = bcm47xx_board_list_model_no; e1->value1; e1++) {
+ if (strstarts(buf1, e1->value1))
+ return &e1->board;
+ }
+ }
+
+- if (bcm47xx_nvram_getenv("machine_name", buf1, sizeof(buf1)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "machine_name", buf1, sizeof(buf1)) >= 0) {
+ for (e1 = bcm47xx_board_list_machine_name; e1->value1; e1++) {
+ if (strstarts(buf1, e1->value1))
+ return &e1->board;
+ }
+ }
+
+- if (bcm47xx_nvram_getenv("hardware_version", buf1, sizeof(buf1)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "hardware_version", buf1, sizeof(buf1)) >= 0) {
+ for (e1 = bcm47xx_board_list_hardware_version; e1->value1; e1++) {
+ if (strstarts(buf1, e1->value1))
+ return &e1->board;
+ }
+ }
+
+- if (bcm47xx_nvram_getenv("productid", buf1, sizeof(buf1)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "productid", buf1, sizeof(buf1)) >= 0) {
+ for (e1 = bcm47xx_board_list_productid; e1->value1; e1++) {
+ if (!strcmp(buf1, e1->value1))
+ return &e1->board;
+ }
+ }
+
+- if (bcm47xx_nvram_getenv("ModelId", buf1, sizeof(buf1)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "ModelId", buf1, sizeof(buf1)) >= 0) {
+ for (e1 = bcm47xx_board_list_ModelId; e1->value1; e1++) {
+ if (!strcmp(buf1, e1->value1))
+ return &e1->board;
+ }
+ }
+
+- if (bcm47xx_nvram_getenv("melco_id", buf1, sizeof(buf1)) >= 0 ||
+- bcm47xx_nvram_getenv("buf1falo_id", buf1, sizeof(buf1)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "melco_id", buf1, sizeof(buf1)) >= 0 ||
++ bcm47xx_nvram_getenv(NULL, "buf1falo_id", buf1, sizeof(buf1)) >= 0) {
+ /* buffalo hardware, check id for specific hardware matches */
+ for (e1 = bcm47xx_board_list_melco_id; e1->value1; e1++) {
+ if (!strcmp(buf1, e1->value1))
+@@ -247,8 +247,8 @@ static __init const struct bcm47xx_board
+ }
+ }
+
+- if (bcm47xx_nvram_getenv("boot_hw_model", buf1, sizeof(buf1)) >= 0 &&
+- bcm47xx_nvram_getenv("boot_hw_ver", buf2, sizeof(buf2)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "boot_hw_model", buf1, sizeof(buf1)) >= 0 &&
++ bcm47xx_nvram_getenv(NULL, "boot_hw_ver", buf2, sizeof(buf2)) >= 0) {
+ for (e2 = bcm47xx_board_list_boot_hw; e2->value1; e2++) {
+ if (!strcmp(buf1, e2->value1) &&
+ !strcmp(buf2, e2->value2))
+@@ -256,16 +256,16 @@ static __init const struct bcm47xx_board
+ }
+ }
+
+- if (bcm47xx_nvram_getenv("board_id", buf1, sizeof(buf1)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "board_id", buf1, sizeof(buf1)) >= 0) {
+ for (e1 = bcm47xx_board_list_board_id; e1->value1; e1++) {
+ if (!strcmp(buf1, e1->value1))
+ return &e1->board;
+ }
+ }
+
+- if (bcm47xx_nvram_getenv("boardtype", buf1, sizeof(buf1)) >= 0 &&
+- bcm47xx_nvram_getenv("boardnum", buf2, sizeof(buf2)) >= 0 &&
+- bcm47xx_nvram_getenv("boardrev", buf3, sizeof(buf3)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "boardtype", buf1, sizeof(buf1)) >= 0 &&
++ bcm47xx_nvram_getenv(NULL, "boardnum", buf2, sizeof(buf2)) >= 0 &&
++ bcm47xx_nvram_getenv(NULL, "boardrev", buf3, sizeof(buf3)) >= 0) {
+ for (e3 = bcm47xx_board_list_board; e3->value1; e3++) {
+ if (!strcmp(buf1, e3->value1) &&
+ !strcmp(buf2, e3->value2) &&
+@@ -286,7 +286,7 @@ void __init bcm47xx_board_detect(void)
+ return;
+
+ /* check if the nvram is available */
+- err = bcm47xx_nvram_getenv("boardtype", buf, sizeof(buf));
++ err = bcm47xx_nvram_getenv(NULL, "boardtype", buf, sizeof(buf));
+
+ /* init of nvram failed, probably too early now */
+ if (err == -ENXIO) {
+--- a/arch/mips/bcm47xx/nvram.c
++++ b/arch/mips/bcm47xx/nvram.c
+@@ -158,7 +158,8 @@ static int nvram_init(void)
+ return -ENXIO;
+ }
+
+-int bcm47xx_nvram_getenv(char *name, char *val, size_t val_len)
++int bcm47xx_nvram_getenv(const struct device *dev, const char *name, char *val,
++ size_t val_len)
+ {
+ char *var, *value, *end, *eq;
+ int err;
+@@ -190,7 +191,7 @@ int bcm47xx_nvram_getenv(char *name, cha
+ }
+ EXPORT_SYMBOL(bcm47xx_nvram_getenv);
+
+-int bcm47xx_nvram_gpio_pin(const char *name)
++int bcm47xx_nvram_gpio_pin(const struct device *dev, const char *name)
+ {
+ int i, err;
+ char nvram_var[10];
+@@ -200,7 +201,7 @@ int bcm47xx_nvram_gpio_pin(const char *n
+ err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
+ if (err <= 0)
+ continue;
+- err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf));
++ err = bcm47xx_nvram_getenv(dev, nvram_var, buf, sizeof(buf));
+ if (err <= 0)
+ continue;
+ if (!strcmp(name, buf))
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -123,7 +123,7 @@ static int bcm47xx_get_invariants(struct
+ memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
+ bcm47xx_fill_sprom(&iv->sprom, NULL, false);
+
+- if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
++ if (bcm47xx_nvram_getenv(NULL, "cardbus", buf, sizeof(buf)) >= 0)
+ iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
+
+ return 0;
+@@ -146,7 +146,7 @@ static void __init bcm47xx_register_ssb(
+ panic("Failed to initialize SSB bus (err %d)", err);
+
+ mcore = &bcm47xx_bus.ssb.mipscore;
+- if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
++ if (bcm47xx_nvram_getenv(NULL, "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
+@@ -50,10 +50,10 @@ static int get_nvram_var(const char *pre
+
+ create_key(prefix, postfix, name, key, sizeof(key));
+
+- err = bcm47xx_nvram_getenv(key, buf, len);
++ err = bcm47xx_nvram_getenv(NULL, key, buf, len);
+ if (fallback && err == -ENOENT && prefix) {
+ create_key(NULL, postfix, name, key, sizeof(key));
+- err = bcm47xx_nvram_getenv(key, buf, len);
++ err = bcm47xx_nvram_getenv(NULL, key, buf, len);
+ }
+ return err;
+ }
+--- a/arch/mips/bcm47xx/time.c
++++ b/arch/mips/bcm47xx/time.c
+@@ -61,7 +61,7 @@ void __init plat_time_init(void)
+ }
+
+ if (chip_id == 0x5354) {
+- len = bcm47xx_nvram_getenv("clkfreq", buf, sizeof(buf));
++ len = bcm47xx_nvram_getenv(NULL, "clkfreq", buf, sizeof(buf));
+ if (len >= 0 && !strncmp(buf, "200", 4))
+ hz = 100000000;
+ }
+--- 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
+--- /dev/null
++++ b/drivers/misc/bcm47xx-nvram.c
+@@ -0,0 +1,211 @@
++/*
++ * 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>
++
++struct bcm47xx_nvram {
++ size_t nvram_len;
++ char *nvram_buf;
++};
++
++static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
++
++static u32 find_nvram_size(void __iomem *end)
++{
++ struct nvram_header *header;
++ int i;
++
++ for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) {
++ header = (struct nvram_header *)(end - nvram_sizes[i]);
++ if (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 *header;
++ int i;
++ u32 off;
++ u32 *src, *dst;
++ 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 *)(base + off - size);
++ goto found;
++ }
++ off <<= 1;
++ }
++
++ /* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
++ header = (struct nvram_header *)(base + 4096);
++ if (header->magic == NVRAM_HEADER) {
++ size = NVRAM_SPACE;
++ goto found;
++ }
++
++ header = (struct nvram_header *)(base + 1024);
++ if (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 (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, header->len, size);
++
++ *nvram_buf = devm_kzalloc(dev, *nvram_len, GFP_KERNEL);
++ if (!*nvram_buf)
++ return -ENOMEM;
++
++ src = (u32 *) header;
++ dst = (u32 *) *nvram_buf;
++ for (i = 0; i < sizeof(struct nvram_header); i += 4)
++ *dst++ = *src++;
++ for (; i < *nvram_len; i += 4)
++ *dst++ = le32_to_cpu(*src++);
++
++ return 0;
++}
++
++int bcm47xx_nvram_getenv(const struct device *dev, const char *name, char *val, size_t val_len)
++{
++ char *var, *value, *end, *eq;
++ struct bcm47xx_nvram *nvram;
++
++ if (!dev)
++ return -ENODEV;
++
++ nvram = dev_get_drvdata(dev);
++
++ 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 struct device *dev, const char *name)
++{
++ int i, err;
++ char nvram_var[10];
++ char buf[30];
++
++ if (!dev)
++ return -ENODEV;
++
++ for (i = 0; i < 32; i++) {
++ err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i);
++ if (err <= 0)
++ continue;
++ err = bcm47xx_nvram_getenv(dev, 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;
++ struct bcm47xx_nvram *nvram;
++ 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;
++
++ platform_set_drvdata(pdev, nvram);
++
++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");
+--- a/drivers/net/ethernet/broadcom/b44.c
++++ b/drivers/net/ethernet/broadcom/b44.c
+@@ -411,7 +411,7 @@ static void b44_wap54g10_workaround(stru
+ * see https://dev.openwrt.org/ticket/146
+ * check and reset bit "isolate"
+ */
+- if (bcm47xx_nvram_getenv("boardnum", buf, sizeof(buf)) < 0)
++ if (bcm47xx_nvram_getenv(NULL, "boardnum", buf, sizeof(buf)) < 0)
+ return;
+ if (simple_strtoul(buf, NULL, 0) == 2) {
+ err = __b44_readphy(bp, 0, MII_BMCR, &val);
+--- a/drivers/net/ethernet/broadcom/bgmac.c
++++ b/drivers/net/ethernet/broadcom/bgmac.c
+@@ -974,7 +974,7 @@ static void bgmac_chip_reset(struct bgma
+ BGMAC_CHIPCTL_1_IF_TYPE_MII;
+ char buf[4];
+
+- if (bcm47xx_nvram_getenv("et_swtype", buf, sizeof(buf)) > 0) {
++ if (bcm47xx_nvram_getenv(NULL, "et_swtype", buf, sizeof(buf)) > 0) {
+ if (kstrtou8(buf, 0, &et_swtype))
+ bgmac_err(bgmac, "Failed to parse et_swtype (%s)\n",
+ buf);
+@@ -1534,7 +1534,7 @@ static int bgmac_probe(struct bcma_devic
+ }
+
+ bgmac->int_mask = BGMAC_IS_ERRMASK | BGMAC_IS_RX | BGMAC_IS_TX_MASK;
+- if (bcm47xx_nvram_getenv("et0_no_txint", NULL, 0) == 0)
++ if (bcm47xx_nvram_getenv(NULL, "et0_no_txint", NULL, 0) == 0)
+ bgmac->int_mask &= ~BGMAC_IS_TX_MASK;
+
+ /* TODO: reset the external phy. Specs are needed */
+--- a/drivers/ssb/driver_chipcommon_pmu.c
++++ b/drivers/ssb/driver_chipcommon_pmu.c
+@@ -319,7 +319,7 @@ static void ssb_pmu_pll_init(struct ssb_
+
+ if (bus->bustype == SSB_BUSTYPE_SSB) {
+ char buf[20];
+- if (bcm47xx_nvram_getenv("xtalfreq", buf, sizeof(buf)) >= 0)
++ if (bcm47xx_nvram_getenv(NULL, "xtalfreq", buf, sizeof(buf)) >= 0)
+ crystalfreq = simple_strtoul(buf, NULL, 0);
+ }
+
+--- a/include/linux/bcm47xx_nvram.h
++++ b/include/linux/bcm47xx_nvram.h
+@@ -15,6 +15,8 @@
+ #include <linux/types.h>
+ #include <linux/kernel.h>
+
++struct device;
++
+ struct nvram_header {
+ u32 magic;
+ u32 len;
+@@ -33,17 +35,21 @@ struct nvram_header {
+ #define NVRAM_MAX_VALUE_LEN 255
+ #define NVRAM_MAX_PARAM_LEN 64
+
+-#ifdef CONFIG_BCM47XX
+-int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len);
++#if defined(CONFIG_BCM47XX) || defined(CONFIG_BCM47XX_NVRAM)
++int bcm47xx_nvram_getenv(const struct device *dev, const char *name, char *val,
++ size_t val_len);
+
+-int bcm47xx_nvram_gpio_pin(const char *name);
++int bcm47xx_nvram_gpio_pin(const struct device *dev, const char *name);
+ #else
+-static inline int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len)
++static inline int bcm47xx_nvram_getenv(const struct device *dev,
++ const char *name, char *val,
++ size_t val_len)
+ {
+ return -ENXIO;
+ }
+
+-static inline int bcm47xx_nvram_gpio_pin(const char *name)
++static inline int bcm47xx_nvram_gpio_pin(const struct device *dev,
++ const char *name)
+ {
+ return -ENXIO;
+ }
generated by cgit v1.1 at 2024-12-30 22:14:49 +0000