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| author | Rafał Miłecki <zajec5@gmail.com> | 2014-09-03 22:59:45 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:44:59 +0100 |
| commit | 21400f252a97755579b43a4dc95dd02cd7f0ca75 (patch) | |
| tree | 54b4dad7d552e2f2840ca5f8c0ec88ee9747368d /arch/mips | |
| parent | 8d602dd0f984e8488ab891344ebdb6e1f3128c4a (diff) | |
| download | linux-stable-21400f252a97755579b43a4dc95dd02cd7f0ca75.tar.gz linux-stable-21400f252a97755579b43a4dc95dd02cd7f0ca75.tar.bz2 linux-stable-21400f252a97755579b43a4dc95dd02cd7f0ca75.zip | |
MIPS: BCM47XX: Make ssb init NVRAM instead of bcm47xx polling it
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>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/bcm47xx/nvram.c | 30 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h | 1 |
2 files changed, 10 insertions, 21 deletions
diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c index e07976bbb739..fecc5aeddd46 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 36a3fc1aa3ae..676be22bcab3 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]) |