diff options
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.patch | 142 |
1 files changed, 93 insertions, 49 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 index a53e86d4b5..78997ed268 100644 --- 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 @@ -1,30 +1,64 @@ -From 60a413ed5bc7917f1612df441240f458163b10c1 Mon Sep 17 00:00:00 2001 +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 03/15] bcm47xx-nvram: add new nvram driver with dt support +Subject: [PATCH 02/17] bcm47xx-nvram: add new broadcom 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 +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 address and also for configuration values in the vendor firmware. +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> --- - 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(-) + .../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/arch/mips/bcm47xx/board.c +++ b/arch/mips/bcm47xx/board.c @@ -196,50 +196,50 @@ static __init const struct bcm47xx_board @@ -226,7 +260,7 @@ mac address and also for configuration values in the vendor firmware. +obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx-nvram.o --- /dev/null +++ b/drivers/misc/bcm47xx-nvram.c -@@ -0,0 +1,211 @@ +@@ -0,0 +1,215 @@ +/* + * BCM947xx nvram variable access + * @@ -259,12 +293,12 @@ mac address and also for configuration values in the vendor firmware. + +static u32 find_nvram_size(void __iomem *end) +{ -+ struct nvram_header *header; ++ 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_HEADER) ++ header = (struct nvram_header __iomem *)(end - nvram_sizes[i]); ++ if (__raw_readl(&header->magic) == NVRAM_HEADER) + return nvram_sizes[i]; + } + @@ -276,10 +310,11 @@ mac address and also for configuration values in the vendor firmware. + size_t len, char **nvram_buf, + size_t *nvram_len) +{ -+ struct nvram_header *header; ++ struct nvram_header __iomem *header; + int i; + u32 off; -+ u32 *src, *dst; ++ u32 *dst; ++ __le32 __iomem *src; + u32 size; + + /* TODO: when nvram is on nand flash check for bad blocks first. */ @@ -288,21 +323,22 @@ mac address and also for configuration values in the vendor firmware. + /* Windowed flash access */ + size = find_nvram_size(base + off); + if (size) { -+ header = (struct nvram_header *)(base + off - size); ++ header = (struct nvram_header __iomem *) ++ (base + off - size); + goto found; + } -+ off <<= 1; ++ off += 0x10000; + } + + /* Try embedded NVRAM at 4 KB and 1 KB as last resorts */ -+ header = (struct nvram_header *)(base + 4096); -+ if (header->magic == NVRAM_HEADER) { ++ header = (struct nvram_header __iomem *)(base + 4096); ++ if (__raw_readl(&header->magic) == NVRAM_HEADER) { + size = NVRAM_SPACE; + goto found; + } + -+ header = (struct nvram_header *)(base + 1024); -+ if (header->magic == NVRAM_HEADER) { ++ header = (struct nvram_header __iomem *)(base + 1024); ++ if (__raw_readl(&header->magic) == NVRAM_HEADER) { + size = NVRAM_SPACE; + goto found; + } @@ -313,25 +349,26 @@ mac address and also for configuration values in the vendor firmware. + return -ENXIO; + +found: -+ if (header->len > size) ++ 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, header->len, size); ++ *nvram_len = min_t(u32, readl(&header->len), size); + + *nvram_buf = devm_kzalloc(dev, *nvram_len, GFP_KERNEL); + if (!*nvram_buf) + return -ENOMEM; + -+ src = (u32 *) header; ++ src = (__le32 __iomem *) header; + dst = (u32 *) *nvram_buf; + for (i = 0; i < sizeof(struct nvram_header); i += 4) -+ *dst++ = *src++; ++ *dst++ = __raw_readl(src++); + for (; i < *nvram_len; i += 4) -+ *dst++ = le32_to_cpu(*src++); ++ *dst++ = readl(src++); + + return 0; +} + -+int bcm47xx_nvram_getenv(const struct device *dev, const 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; + struct bcm47xx_nvram *nvram; @@ -407,7 +444,8 @@ mac address and also for configuration values in the vendor firmware. + if (!mmio) + return -ENOMEM; + -+ err = nvram_find_and_copy(dev, mmio, resource_size(&flash_mem), &nvram->nvram_buf, &nvram->nvram_len); ++ err = nvram_find_and_copy(dev, mmio, resource_size(&flash_mem), ++ &nvram->nvram_buf, &nvram->nvram_len); + if (err) + goto err_unmap_mmio; + @@ -451,16 +489,17 @@ mac address and also for configuration values in the vendor firmware. 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 +@@ -974,7 +974,8 @@ 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 (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 +@@ -1534,7 +1535,7 @@ static int bgmac_probe(struct bcma_devic } bgmac->int_mask = BGMAC_IS_ERRMASK | BGMAC_IS_RX | BGMAC_IS_TX_MASK; @@ -471,18 +510,19 @@ mac address and also for configuration values in the vendor firmware. /* 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_ +@@ -319,7 +319,8 @@ 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) ++ 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 @@ +@@ -15,9 +15,11 @@ #include <linux/types.h> #include <linux/kernel.h> @@ -490,8 +530,12 @@ mac address and also for configuration values in the vendor firmware. + struct nvram_header { u32 magic; - u32 len; -@@ -33,17 +35,21 @@ struct nvram_header { +- 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 */ +@@ -33,18 +35,21 @@ struct nvram_header { #define NVRAM_MAX_VALUE_LEN 255 #define NVRAM_MAX_PARAM_LEN 64 @@ -504,10 +548,10 @@ mac address and also for configuration values in the vendor firmware. -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 char *name, char *val, +static inline int bcm47xx_nvram_getenv(const struct device *dev, + const char *name, char *val, -+ size_t val_len) + size_t val_len) { return -ENXIO; } |