diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.18/030-02-MIPS-BCM47XX-Make-ssb-init-NVRAM-instead-of-bcm47xx-.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.18/030-02-MIPS-BCM47XX-Make-ssb-init-NVRAM-instead-of-bcm47xx-.patch | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.18/030-02-MIPS-BCM47XX-Make-ssb-init-NVRAM-instead-of-bcm47xx-.patch b/target/linux/brcm47xx/patches-3.18/030-02-MIPS-BCM47XX-Make-ssb-init-NVRAM-instead-of-bcm47xx-.patch new file mode 100644 index 0000000000..07a782da8f --- /dev/null +++ b/target/linux/brcm47xx/patches-3.18/030-02-MIPS-BCM47XX-Make-ssb-init-NVRAM-instead-of-bcm47xx-.patch @@ -0,0 +1,133 @@ +From 21400f252a97755579b43a4dc95dd02cd7f0ca75 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com> +Date: Wed, 3 Sep 2014 22:59:45 +0200 +Subject: [PATCH 155/158] MIPS: BCM47XX: Make ssb init NVRAM instead of bcm47xx + polling it +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This makes NVRAM code less bcm47xx/ssb specific allowing it to become a +standalone driver in the future. A similar patch for bcma will follow +when it's ready. + +Signed-off-by: Rafał Miłecki <zajec5@gmail.com> +Acked-by: Hauke Mehrtens <hauke@hauke-m.de> +Cc: linux-mips@linux-mips.org +Patchwork: https://patchwork.linux-mips.org/patch/7612/ +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +--- + arch/mips/bcm47xx/nvram.c | 30 +++++++--------------- + arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h | 1 + + drivers/ssb/driver_mipscore.c | 14 +++++++++- + 3 files changed, 23 insertions(+), 22 deletions(-) + +diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c +index e07976b..fecc5ae 100644 +--- a/arch/mips/bcm47xx/nvram.c ++++ b/arch/mips/bcm47xx/nvram.c +@@ -98,7 +98,14 @@ found: + return 0; + } + +-static int bcm47xx_nvram_init_from_mem(u32 base, u32 lim) ++/* ++ * 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; +@@ -114,25 +121,6 @@ static int bcm47xx_nvram_init_from_mem(u32 base, u32 lim) + return err; + } + +-#ifdef CONFIG_BCM47XX_SSB +-static int nvram_init_ssb(void) +-{ +- struct ssb_mipscore *mcore = &bcm47xx_bus.ssb.mipscore; +- u32 base; +- u32 lim; +- +- if (mcore->pflash.present) { +- base = mcore->pflash.window; +- lim = mcore->pflash.window_size; +- } else { +- pr_err("Couldn't find supported flash memory\n"); +- return -ENXIO; +- } +- +- return bcm47xx_nvram_init_from_mem(base, lim); +-} +-#endif +- + #ifdef CONFIG_BCM47XX_BCMA + static int nvram_init_bcma(void) + { +@@ -168,7 +156,7 @@ static int nvram_init(void) + switch (bcm47xx_bus_type) { + #ifdef CONFIG_BCM47XX_SSB + case BCM47XX_BUS_TYPE_SSB: +- return nvram_init_ssb(); ++ break; + #endif + #ifdef CONFIG_BCM47XX_BCMA + case BCM47XX_BUS_TYPE_BCMA: +diff --git a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h +index 36a3fc1..676be22 100644 +--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h ++++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h +@@ -32,6 +32,7 @@ struct nvram_header { + #define NVRAM_MAX_VALUE_LEN 255 + #define NVRAM_MAX_PARAM_LEN 64 + ++int bcm47xx_nvram_init_from_mem(u32 base, u32 lim); + 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]) +diff --git a/drivers/ssb/driver_mipscore.c b/drivers/ssb/driver_mipscore.c +index 0907706..7b986f9 100644 +--- a/drivers/ssb/driver_mipscore.c ++++ b/drivers/ssb/driver_mipscore.c +@@ -15,6 +15,9 @@ + #include <linux/serial_core.h> + #include <linux/serial_reg.h> + #include <linux/time.h> ++#ifdef CONFIG_BCM47XX ++#include <bcm47xx_nvram.h> ++#endif + + #include "ssb_private.h" + +@@ -210,6 +213,7 @@ static void ssb_mips_serial_init(struct ssb_mipscore *mcore) + static void ssb_mips_flash_detect(struct ssb_mipscore *mcore) + { + struct ssb_bus *bus = mcore->dev->bus; ++ struct ssb_sflash *sflash = &mcore->sflash; + struct ssb_pflash *pflash = &mcore->pflash; + + /* When there is no chipcommon on the bus there is 4MB flash */ +@@ -242,7 +246,15 @@ static void ssb_mips_flash_detect(struct ssb_mipscore *mcore) + } + + ssb_pflash: +- if (pflash->present) { ++ if (sflash->present) { ++#ifdef CONFIG_BCM47XX ++ bcm47xx_nvram_init_from_mem(sflash->window, sflash->size); ++#endif ++ } else if (pflash->present) { ++#ifdef CONFIG_BCM47XX ++ bcm47xx_nvram_init_from_mem(pflash->window, pflash->window_size); ++#endif ++ + ssb_pflash_data.width = pflash->buswidth; + ssb_pflash_resource.start = pflash->window; + ssb_pflash_resource.end = pflash->window + pflash->window_size; +-- +1.8.4.5 + |