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>
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 @@
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 @@
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 @@
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: