76d079204d
Changelogs: * https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.12 * https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.13 * https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.14 Build tested on brcm63xx and ipq806x, runtested on brcm63xx. Signed-off-by: Jonas Gorski <jogo@openwrt.org> SVN-Revision: 45711
125 lines
3.8 KiB
Diff
125 lines
3.8 KiB
Diff
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(-)
|
|
|
|
--- 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(u
|
|
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:
|
|
--- 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])
|
|
--- 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
|
|
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_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;
|