brcm47xx: backport BCM47XX arch patches (clean NVRAM code, later init)

SVN-Revision: 43979
This commit is contained in:
Rafał Miłecki 2015-01-16 12:48:27 +00:00
parent 8a103d5c56
commit 3bdf05441a
16 changed files with 1446 additions and 18 deletions

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@ -0,0 +1,132 @@
From 8d602dd0f984e8488ab891344ebdb6e1f3128c4a 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 22:51:06 +0200
Subject: [PATCH 154/158] MIPS: BCM47XX: Get rid of calls to KSEG1ADDR
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We should be using ioremap_nocache helper which handles remaps in a
smarter way.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/7611/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/bcm47xx/nvram.c | 44 ++++++++++++++++++++++++++++++++------------
1 file changed, 32 insertions(+), 12 deletions(-)
diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
index 2bed73a..e07976b 100644
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -23,13 +23,13 @@
static char nvram_buf[NVRAM_SPACE];
static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
-static u32 find_nvram_size(u32 end)
+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 *)KSEG1ADDR(end - nvram_sizes[i]);
+ header = (struct nvram_header *)(end - nvram_sizes[i]);
if (header->magic == NVRAM_HEADER)
return nvram_sizes[i];
}
@@ -38,35 +38,39 @@ static u32 find_nvram_size(u32 end)
}
/* Probe for NVRAM header */
-static int nvram_find_and_copy(u32 base, u32 lim)
+static int nvram_find_and_copy(void __iomem *iobase, u32 lim)
{
- struct nvram_header *header;
+ struct nvram_header __iomem *header;
int i;
u32 off;
u32 *src, *dst;
u32 size;
+ if (nvram_buf[0]) {
+ pr_warn("nvram already initialized\n");
+ return -EEXIST;
+ }
+
/* TODO: when nvram is on nand flash check for bad blocks first. */
off = FLASH_MIN;
while (off <= lim) {
/* Windowed flash access */
- size = find_nvram_size(base + off);
+ size = find_nvram_size(iobase + off);
if (size) {
- header = (struct nvram_header *)KSEG1ADDR(base + off -
- size);
+ header = (struct nvram_header *)(iobase + off - size);
goto found;
}
off <<= 1;
}
/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
- header = (struct nvram_header *) KSEG1ADDR(base + 4096);
+ header = (struct nvram_header *)(iobase + 4096);
if (header->magic == NVRAM_HEADER) {
size = NVRAM_SPACE;
goto found;
}
- header = (struct nvram_header *) KSEG1ADDR(base + 1024);
+ header = (struct nvram_header *)(iobase + 1024);
if (header->magic == NVRAM_HEADER) {
size = NVRAM_SPACE;
goto found;
@@ -94,6 +98,22 @@ found:
return 0;
}
+static int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
+{
+ void __iomem *iobase;
+ int err;
+
+ iobase = ioremap_nocache(base, lim);
+ if (!iobase)
+ return -ENOMEM;
+
+ err = nvram_find_and_copy(iobase, lim);
+
+ iounmap(iobase);
+
+ return err;
+}
+
#ifdef CONFIG_BCM47XX_SSB
static int nvram_init_ssb(void)
{
@@ -109,7 +129,7 @@ static int nvram_init_ssb(void)
return -ENXIO;
}
- return nvram_find_and_copy(base, lim);
+ return bcm47xx_nvram_init_from_mem(base, lim);
}
#endif
@@ -139,7 +159,7 @@ static int nvram_init_bcma(void)
return -ENXIO;
}
- return nvram_find_and_copy(base, lim);
+ return bcm47xx_nvram_init_from_mem(base, lim);
}
#endif
--
1.8.4.5

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@ -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

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@ -0,0 +1,113 @@
From 7177efc5b030012c54c2e217c9d6decc0bcc1c53 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 28 Oct 2014 13:30:23 +0100
Subject: [PATCH 156/158] MIPS: BCM47XX: Make bcma init NVRAM instead of
bcm47xx polling it
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This drops ssb/bcma dependency and will allow us to make it a standalone
driver.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/8233/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/bcm47xx/nvram.c | 42 ++----------------------------------------
drivers/bcma/driver_mips.c | 13 +++++++++++--
2 files changed, 13 insertions(+), 42 deletions(-)
diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
index fecc5ae..21712fb 100644
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -121,48 +121,10 @@ int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
return err;
}
-#ifdef CONFIG_BCM47XX_BCMA
-static int nvram_init_bcma(void)
-{
- struct bcma_drv_cc *cc = &bcm47xx_bus.bcma.bus.drv_cc;
- u32 base;
- u32 lim;
-
-#ifdef CONFIG_BCMA_NFLASH
- if (cc->nflash.boot) {
- base = BCMA_SOC_FLASH1;
- lim = BCMA_SOC_FLASH1_SZ;
- } else
-#endif
- if (cc->pflash.present) {
- base = cc->pflash.window;
- lim = cc->pflash.window_size;
-#ifdef CONFIG_BCMA_SFLASH
- } else if (cc->sflash.present) {
- base = cc->sflash.window;
- lim = cc->sflash.size;
-#endif
- } else {
- pr_err("Couldn't find supported flash memory\n");
- return -ENXIO;
- }
-
- return bcm47xx_nvram_init_from_mem(base, lim);
-}
-#endif
-
static int nvram_init(void)
{
- switch (bcm47xx_bus_type) {
-#ifdef CONFIG_BCM47XX_SSB
- case BCM47XX_BUS_TYPE_SSB:
- break;
-#endif
-#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
- return nvram_init_bcma();
-#endif
- }
+ /* TODO: Look for MTD "nvram" partition */
+
return -ENXIO;
}
diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c
index 004d6aa..8a653dc 100644
--- a/drivers/bcma/driver_mips.c
+++ b/drivers/bcma/driver_mips.c
@@ -20,6 +20,9 @@
#include <linux/serial_core.h>
#include <linux/serial_reg.h>
#include <linux/time.h>
+#ifdef CONFIG_BCM47XX
+#include <bcm47xx_nvram.h>
+#endif
enum bcma_boot_dev {
BCMA_BOOT_DEV_UNK = 0,
@@ -316,10 +319,16 @@ static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore)
switch (boot_dev) {
case BCMA_BOOT_DEV_PARALLEL:
case BCMA_BOOT_DEV_SERIAL:
- /* TODO: Init NVRAM using BCMA_SOC_FLASH2 window */
+#ifdef CONFIG_BCM47XX
+ bcm47xx_nvram_init_from_mem(BCMA_SOC_FLASH2,
+ BCMA_SOC_FLASH2_SZ);
+#endif
break;
case BCMA_BOOT_DEV_NAND:
- /* TODO: Init NVRAM using BCMA_SOC_FLASH1 window */
+#ifdef CONFIG_BCM47XX
+ bcm47xx_nvram_init_from_mem(BCMA_SOC_FLASH1,
+ BCMA_SOC_FLASH1_SZ);
+#endif
break;
default:
break;
--
1.8.4.5

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@ -0,0 +1,216 @@
From a59da8fb3b2a1f2df5f871464e43cd5b6ca6ceb1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 28 Oct 2014 12:52:02 +0100
Subject: [PATCH 157/158] MIPS: BCM47XX: Move SPROM fallback code into sprom.c
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This is some general cleanup as well as preparing sprom.c to become a
standalone driver. We will need this for bcm53xx ARM arch support.
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/8232/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/bcm47xx/bcm47xx_private.h | 3 ++
arch/mips/bcm47xx/setup.c | 58 ++-----------------------------
arch/mips/bcm47xx/sprom.c | 68 +++++++++++++++++++++++++++++++++++++
3 files changed, 73 insertions(+), 56 deletions(-)
diff --git a/arch/mips/bcm47xx/bcm47xx_private.h b/arch/mips/bcm47xx/bcm47xx_private.h
index f1cc9d0..12a112d 100644
--- a/arch/mips/bcm47xx/bcm47xx_private.h
+++ b/arch/mips/bcm47xx/bcm47xx_private.h
@@ -6,6 +6,9 @@
/* prom.c */
void __init bcm47xx_prom_highmem_init(void);
+/* sprom.c */
+void bcm47xx_sprom_register_fallbacks(void);
+
/* buttons.c */
int __init bcm47xx_buttons_register(void);
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index c00585d..444c65a 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -102,23 +102,6 @@ static void bcm47xx_machine_halt(void)
}
#ifdef CONFIG_BCM47XX_SSB
-static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
-{
- char prefix[10];
-
- if (bus->bustype == SSB_BUSTYPE_PCI) {
- memset(out, 0, sizeof(struct ssb_sprom));
- snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
- bus->host_pci->bus->number + 1,
- PCI_SLOT(bus->host_pci->devfn));
- bcm47xx_fill_sprom(out, prefix, false);
- return 0;
- } else {
- printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
- return -EINVAL;
- }
-}
-
static int bcm47xx_get_invariants(struct ssb_bus *bus,
struct ssb_init_invariants *iv)
{
@@ -144,11 +127,6 @@ static void __init bcm47xx_register_ssb(void)
char buf[100];
struct ssb_mipscore *mcore;
- err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb);
- if (err)
- printk(KERN_WARNING "bcm47xx: someone else already registered"
- " a ssb SPROM callback handler (err %d)\n", err);
-
err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
bcm47xx_get_invariants);
if (err)
@@ -171,44 +149,10 @@ static void __init bcm47xx_register_ssb(void)
#endif
#ifdef CONFIG_BCM47XX_BCMA
-static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
-{
- char prefix[10];
- struct bcma_device *core;
-
- switch (bus->hosttype) {
- case BCMA_HOSTTYPE_PCI:
- memset(out, 0, sizeof(struct ssb_sprom));
- snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
- bus->host_pci->bus->number + 1,
- PCI_SLOT(bus->host_pci->devfn));
- bcm47xx_fill_sprom(out, prefix, false);
- return 0;
- case BCMA_HOSTTYPE_SOC:
- memset(out, 0, sizeof(struct ssb_sprom));
- core = bcma_find_core(bus, BCMA_CORE_80211);
- if (core) {
- snprintf(prefix, sizeof(prefix), "sb/%u/",
- core->core_index);
- bcm47xx_fill_sprom(out, prefix, true);
- } else {
- bcm47xx_fill_sprom(out, NULL, false);
- }
- return 0;
- default:
- pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
- return -EINVAL;
- }
-}
-
static void __init bcm47xx_register_bcma(void)
{
int err;
- err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
- if (err)
- pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);
-
err = bcma_host_soc_register(&bcm47xx_bus.bcma);
if (err)
panic("Failed to register BCMA bus (err %d)", err);
@@ -229,6 +173,7 @@ void __init plat_mem_setup(void)
printk(KERN_INFO "bcm47xx: using bcma bus\n");
#ifdef CONFIG_BCM47XX_BCMA
bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
+ bcm47xx_sprom_register_fallbacks();
bcm47xx_register_bcma();
bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
#ifdef CONFIG_HIGHMEM
@@ -239,6 +184,7 @@ void __init plat_mem_setup(void)
printk(KERN_INFO "bcm47xx: using ssb bus\n");
#ifdef CONFIG_BCM47XX_SSB
bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
+ bcm47xx_sprom_register_fallbacks();
bcm47xx_register_ssb();
bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id);
#endif
diff --git a/arch/mips/bcm47xx/sprom.c b/arch/mips/bcm47xx/sprom.c
index 41226b6..e772e77 100644
--- a/arch/mips/bcm47xx/sprom.c
+++ b/arch/mips/bcm47xx/sprom.c
@@ -801,3 +801,71 @@ void bcm47xx_fill_bcma_boardinfo(struct bcma_boardinfo *boardinfo,
nvram_read_u16(prefix, NULL, "boardtype", &boardinfo->type, 0, true);
}
#endif
+
+#if defined(CONFIG_BCM47XX_SSB)
+static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
+{
+ char prefix[10];
+
+ if (bus->bustype == SSB_BUSTYPE_PCI) {
+ memset(out, 0, sizeof(struct ssb_sprom));
+ snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
+ bus->host_pci->bus->number + 1,
+ PCI_SLOT(bus->host_pci->devfn));
+ bcm47xx_fill_sprom(out, prefix, false);
+ return 0;
+ } else {
+ pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
+ return -EINVAL;
+ }
+}
+#endif
+
+#if defined(CONFIG_BCM47XX_BCMA)
+static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
+{
+ char prefix[10];
+ struct bcma_device *core;
+
+ switch (bus->hosttype) {
+ case BCMA_HOSTTYPE_PCI:
+ memset(out, 0, sizeof(struct ssb_sprom));
+ snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
+ bus->host_pci->bus->number + 1,
+ PCI_SLOT(bus->host_pci->devfn));
+ bcm47xx_fill_sprom(out, prefix, false);
+ return 0;
+ case BCMA_HOSTTYPE_SOC:
+ memset(out, 0, sizeof(struct ssb_sprom));
+ core = bcma_find_core(bus, BCMA_CORE_80211);
+ if (core) {
+ snprintf(prefix, sizeof(prefix), "sb/%u/",
+ core->core_index);
+ bcm47xx_fill_sprom(out, prefix, true);
+ } else {
+ bcm47xx_fill_sprom(out, NULL, false);
+ }
+ return 0;
+ default:
+ pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
+ return -EINVAL;
+ }
+}
+#endif
+
+/*
+ * On bcm47xx we need to register SPROM fallback handler very early, so we can't
+ * use anything like platform device / driver for this.
+ */
+void bcm47xx_sprom_register_fallbacks(void)
+{
+#if defined(CONFIG_BCM47XX_SSB)
+ if (ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb))
+ pr_warn("Failed to registered ssb SPROM handler\n");
+#endif
+
+#if defined(CONFIG_BCM47XX_BCMA)
+ if (bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma))
+ pr_warn("Failed to registered bcma SPROM handler\n");
+#endif
+}
--
1.8.4.5

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@ -0,0 +1,120 @@
From e5810fa0c1bed16fdfb408862a2e17e962ec5cf6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 28 Oct 2014 14:40:38 +0100
Subject: [PATCH 158/158] MIPS: BCM47XX: Initialize bcma bus later (with mm
available)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Initializaion with memory allocator available will be much simpler, this
will allow cleanup in the bcma code.
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/8234/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/bcm47xx/bcm47xx_private.h | 3 +++
arch/mips/bcm47xx/irq.c | 8 ++++++++
arch/mips/bcm47xx/setup.c | 33 +++++++++++++++++++++++++++------
3 files changed, 38 insertions(+), 6 deletions(-)
diff --git a/arch/mips/bcm47xx/bcm47xx_private.h b/arch/mips/bcm47xx/bcm47xx_private.h
index 12a112d..ea909a5 100644
--- a/arch/mips/bcm47xx/bcm47xx_private.h
+++ b/arch/mips/bcm47xx/bcm47xx_private.h
@@ -15,6 +15,9 @@ int __init bcm47xx_buttons_register(void);
/* leds.c */
void __init bcm47xx_leds_register(void);
+/* setup.c */
+void __init bcm47xx_bus_setup(void);
+
/* workarounds.c */
void __init bcm47xx_workarounds(void);
diff --git a/arch/mips/bcm47xx/irq.c b/arch/mips/bcm47xx/irq.c
index e0585b7..21b4497 100644
--- a/arch/mips/bcm47xx/irq.c
+++ b/arch/mips/bcm47xx/irq.c
@@ -22,6 +22,8 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include "bcm47xx_private.h"
+
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
@@ -65,6 +67,12 @@ DEFINE_HWx_IRQDISPATCH(7)
void __init arch_init_irq(void)
{
+ /*
+ * This is the first arch callback after mm_init (we can use kmalloc),
+ * so let's finish bus initialization now.
+ */
+ bcm47xx_bus_setup();
+
#ifdef CONFIG_BCM47XX_BCMA
if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
bcma_write32(bcm47xx_bus.bcma.bus.drv_mips.core,
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index 444c65a..e43b504 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -156,15 +156,14 @@ static void __init bcm47xx_register_bcma(void)
err = bcma_host_soc_register(&bcm47xx_bus.bcma);
if (err)
panic("Failed to register BCMA bus (err %d)", err);
-
- err = bcma_host_soc_init(&bcm47xx_bus.bcma);
- if (err)
- panic("Failed to initialize BCMA bus (err %d)", err);
-
- bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
}
#endif
+/*
+ * Memory setup is done in the early part of MIPS's arch_mem_init. It's supposed
+ * to detect memory and record it with add_memory_region.
+ * Any extra initializaion performed here must not use kmalloc or bootmem.
+ */
void __init plat_mem_setup(void)
{
struct cpuinfo_mips *c = &current_cpu_data;
@@ -193,6 +192,28 @@ void __init plat_mem_setup(void)
_machine_restart = bcm47xx_machine_restart;
_machine_halt = bcm47xx_machine_halt;
pm_power_off = bcm47xx_machine_halt;
+}
+
+/*
+ * This finishes bus initialization doing things that were not possible without
+ * kmalloc. Make sure to call it late enough (after mm_init).
+ */
+void __init bcm47xx_bus_setup(void)
+{
+#ifdef CONFIG_BCM47XX_BCMA
+ if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
+ int err;
+
+ err = bcma_host_soc_init(&bcm47xx_bus.bcma);
+ if (err)
+ panic("Failed to initialize BCMA bus (err %d)", err);
+
+ bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo,
+ NULL);
+ }
+#endif
+
+ /* With bus initialized we can access NVRAM and detect the board */
bcm47xx_board_detect();
mips_set_machine_name(bcm47xx_board_get_name());
}
--
1.8.4.5

View file

@ -251,17 +251,17 @@ out the configuration than the in kernel cfe config reader.
+static int cfe_env;
+extern char *cfe_env_get(char *nv_buf, const char *name);
static u32 find_nvram_size(u32 end)
static u32 find_nvram_size(void __iomem *end)
{
@@ -46,6 +48,26 @@ static int nvram_find_and_copy(u32 base,
u32 *src, *dst;
u32 size;
@@ -51,6 +53,26 @@ static int nvram_find_and_copy(void __io
return -EEXIST;
}
+ cfe_env = 0;
+
+ /* XXX: hack for supporting the CFE environment stuff on WGT634U */
+ if (lim >= 8 * 1024 * 1024) {
+ src = (u32 *) KSEG1ADDR(base + 8 * 1024 * 1024 - 0x2000);
+ src = (u32 *) iobase + 8 * 1024 * 1024 - 0x2000;
+ dst = (u32 *) nvram_buf;
+
+ if ((*src & 0xff00ff) == 0x000001) {
@ -280,7 +280,7 @@ out the configuration than the in kernel cfe config reader.
/* TODO: when nvram is on nand flash check for bad blocks first. */
off = FLASH_MIN;
while (off <= lim) {
@@ -172,6 +194,13 @@ int bcm47xx_nvram_getenv(char *name, cha
@@ -142,6 +164,13 @@ int bcm47xx_nvram_getenv(char *name, cha
return err;
}

View file

@ -8,7 +8,7 @@
#include <asm/bootinfo.h>
#include <asm/idle.h>
#include <asm/prom.h>
@@ -282,6 +283,33 @@ static struct fixed_phy_status bcm47xx_f
@@ -249,6 +250,33 @@ static struct fixed_phy_status bcm47xx_f
.duplex = DUPLEX_FULL,
};
@ -42,7 +42,7 @@
static int __init bcm47xx_register_bus_complete(void)
{
switch (bcm47xx_bus_type) {
@@ -301,6 +329,7 @@ static int __init bcm47xx_register_bus_c
@@ -268,6 +296,7 @@ static int __init bcm47xx_register_bus_c
bcm47xx_workarounds();
fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);

View file

@ -1,6 +1,6 @@
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -136,6 +136,10 @@ static int bcm47xx_get_invariants(struct
@@ -119,6 +119,10 @@ static int bcm47xx_get_invariants(struct
if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);

View file

@ -0,0 +1,132 @@
From 8d602dd0f984e8488ab891344ebdb6e1f3128c4a 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 22:51:06 +0200
Subject: [PATCH 154/158] MIPS: BCM47XX: Get rid of calls to KSEG1ADDR
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We should be using ioremap_nocache helper which handles remaps in a
smarter way.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/7611/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/bcm47xx/nvram.c | 44 ++++++++++++++++++++++++++++++++------------
1 file changed, 32 insertions(+), 12 deletions(-)
diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
index 2bed73a..e07976b 100644
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -23,13 +23,13 @@
static char nvram_buf[NVRAM_SPACE];
static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
-static u32 find_nvram_size(u32 end)
+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 *)KSEG1ADDR(end - nvram_sizes[i]);
+ header = (struct nvram_header *)(end - nvram_sizes[i]);
if (header->magic == NVRAM_HEADER)
return nvram_sizes[i];
}
@@ -38,35 +38,39 @@ static u32 find_nvram_size(u32 end)
}
/* Probe for NVRAM header */
-static int nvram_find_and_copy(u32 base, u32 lim)
+static int nvram_find_and_copy(void __iomem *iobase, u32 lim)
{
- struct nvram_header *header;
+ struct nvram_header __iomem *header;
int i;
u32 off;
u32 *src, *dst;
u32 size;
+ if (nvram_buf[0]) {
+ pr_warn("nvram already initialized\n");
+ return -EEXIST;
+ }
+
/* TODO: when nvram is on nand flash check for bad blocks first. */
off = FLASH_MIN;
while (off <= lim) {
/* Windowed flash access */
- size = find_nvram_size(base + off);
+ size = find_nvram_size(iobase + off);
if (size) {
- header = (struct nvram_header *)KSEG1ADDR(base + off -
- size);
+ header = (struct nvram_header *)(iobase + off - size);
goto found;
}
off <<= 1;
}
/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
- header = (struct nvram_header *) KSEG1ADDR(base + 4096);
+ header = (struct nvram_header *)(iobase + 4096);
if (header->magic == NVRAM_HEADER) {
size = NVRAM_SPACE;
goto found;
}
- header = (struct nvram_header *) KSEG1ADDR(base + 1024);
+ header = (struct nvram_header *)(iobase + 1024);
if (header->magic == NVRAM_HEADER) {
size = NVRAM_SPACE;
goto found;
@@ -94,6 +98,22 @@ found:
return 0;
}
+static int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
+{
+ void __iomem *iobase;
+ int err;
+
+ iobase = ioremap_nocache(base, lim);
+ if (!iobase)
+ return -ENOMEM;
+
+ err = nvram_find_and_copy(iobase, lim);
+
+ iounmap(iobase);
+
+ return err;
+}
+
#ifdef CONFIG_BCM47XX_SSB
static int nvram_init_ssb(void)
{
@@ -109,7 +129,7 @@ static int nvram_init_ssb(void)
return -ENXIO;
}
- return nvram_find_and_copy(base, lim);
+ return bcm47xx_nvram_init_from_mem(base, lim);
}
#endif
@@ -139,7 +159,7 @@ static int nvram_init_bcma(void)
return -ENXIO;
}
- return nvram_find_and_copy(base, lim);
+ return bcm47xx_nvram_init_from_mem(base, lim);
}
#endif
--
1.8.4.5

View file

@ -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

View file

@ -0,0 +1,113 @@
From 7177efc5b030012c54c2e217c9d6decc0bcc1c53 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 28 Oct 2014 13:30:23 +0100
Subject: [PATCH 156/158] MIPS: BCM47XX: Make bcma init NVRAM instead of
bcm47xx polling it
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This drops ssb/bcma dependency and will allow us to make it a standalone
driver.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/8233/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/bcm47xx/nvram.c | 42 ++----------------------------------------
drivers/bcma/driver_mips.c | 13 +++++++++++--
2 files changed, 13 insertions(+), 42 deletions(-)
diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
index fecc5ae..21712fb 100644
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -121,48 +121,10 @@ int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
return err;
}
-#ifdef CONFIG_BCM47XX_BCMA
-static int nvram_init_bcma(void)
-{
- struct bcma_drv_cc *cc = &bcm47xx_bus.bcma.bus.drv_cc;
- u32 base;
- u32 lim;
-
-#ifdef CONFIG_BCMA_NFLASH
- if (cc->nflash.boot) {
- base = BCMA_SOC_FLASH1;
- lim = BCMA_SOC_FLASH1_SZ;
- } else
-#endif
- if (cc->pflash.present) {
- base = cc->pflash.window;
- lim = cc->pflash.window_size;
-#ifdef CONFIG_BCMA_SFLASH
- } else if (cc->sflash.present) {
- base = cc->sflash.window;
- lim = cc->sflash.size;
-#endif
- } else {
- pr_err("Couldn't find supported flash memory\n");
- return -ENXIO;
- }
-
- return bcm47xx_nvram_init_from_mem(base, lim);
-}
-#endif
-
static int nvram_init(void)
{
- switch (bcm47xx_bus_type) {
-#ifdef CONFIG_BCM47XX_SSB
- case BCM47XX_BUS_TYPE_SSB:
- break;
-#endif
-#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
- return nvram_init_bcma();
-#endif
- }
+ /* TODO: Look for MTD "nvram" partition */
+
return -ENXIO;
}
diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c
index 004d6aa..8a653dc 100644
--- a/drivers/bcma/driver_mips.c
+++ b/drivers/bcma/driver_mips.c
@@ -20,6 +20,9 @@
#include <linux/serial_core.h>
#include <linux/serial_reg.h>
#include <linux/time.h>
+#ifdef CONFIG_BCM47XX
+#include <bcm47xx_nvram.h>
+#endif
enum bcma_boot_dev {
BCMA_BOOT_DEV_UNK = 0,
@@ -316,10 +319,16 @@ static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore)
switch (boot_dev) {
case BCMA_BOOT_DEV_PARALLEL:
case BCMA_BOOT_DEV_SERIAL:
- /* TODO: Init NVRAM using BCMA_SOC_FLASH2 window */
+#ifdef CONFIG_BCM47XX
+ bcm47xx_nvram_init_from_mem(BCMA_SOC_FLASH2,
+ BCMA_SOC_FLASH2_SZ);
+#endif
break;
case BCMA_BOOT_DEV_NAND:
- /* TODO: Init NVRAM using BCMA_SOC_FLASH1 window */
+#ifdef CONFIG_BCM47XX
+ bcm47xx_nvram_init_from_mem(BCMA_SOC_FLASH1,
+ BCMA_SOC_FLASH1_SZ);
+#endif
break;
default:
break;
--
1.8.4.5

View file

@ -0,0 +1,216 @@
From a59da8fb3b2a1f2df5f871464e43cd5b6ca6ceb1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 28 Oct 2014 12:52:02 +0100
Subject: [PATCH 157/158] MIPS: BCM47XX: Move SPROM fallback code into sprom.c
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This is some general cleanup as well as preparing sprom.c to become a
standalone driver. We will need this for bcm53xx ARM arch support.
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/8232/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/bcm47xx/bcm47xx_private.h | 3 ++
arch/mips/bcm47xx/setup.c | 58 ++-----------------------------
arch/mips/bcm47xx/sprom.c | 68 +++++++++++++++++++++++++++++++++++++
3 files changed, 73 insertions(+), 56 deletions(-)
diff --git a/arch/mips/bcm47xx/bcm47xx_private.h b/arch/mips/bcm47xx/bcm47xx_private.h
index f1cc9d0..12a112d 100644
--- a/arch/mips/bcm47xx/bcm47xx_private.h
+++ b/arch/mips/bcm47xx/bcm47xx_private.h
@@ -6,6 +6,9 @@
/* prom.c */
void __init bcm47xx_prom_highmem_init(void);
+/* sprom.c */
+void bcm47xx_sprom_register_fallbacks(void);
+
/* buttons.c */
int __init bcm47xx_buttons_register(void);
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index c00585d..444c65a 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -102,23 +102,6 @@ static void bcm47xx_machine_halt(void)
}
#ifdef CONFIG_BCM47XX_SSB
-static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
-{
- char prefix[10];
-
- if (bus->bustype == SSB_BUSTYPE_PCI) {
- memset(out, 0, sizeof(struct ssb_sprom));
- snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
- bus->host_pci->bus->number + 1,
- PCI_SLOT(bus->host_pci->devfn));
- bcm47xx_fill_sprom(out, prefix, false);
- return 0;
- } else {
- printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
- return -EINVAL;
- }
-}
-
static int bcm47xx_get_invariants(struct ssb_bus *bus,
struct ssb_init_invariants *iv)
{
@@ -144,11 +127,6 @@ static void __init bcm47xx_register_ssb(void)
char buf[100];
struct ssb_mipscore *mcore;
- err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb);
- if (err)
- printk(KERN_WARNING "bcm47xx: someone else already registered"
- " a ssb SPROM callback handler (err %d)\n", err);
-
err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
bcm47xx_get_invariants);
if (err)
@@ -171,44 +149,10 @@ static void __init bcm47xx_register_ssb(void)
#endif
#ifdef CONFIG_BCM47XX_BCMA
-static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
-{
- char prefix[10];
- struct bcma_device *core;
-
- switch (bus->hosttype) {
- case BCMA_HOSTTYPE_PCI:
- memset(out, 0, sizeof(struct ssb_sprom));
- snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
- bus->host_pci->bus->number + 1,
- PCI_SLOT(bus->host_pci->devfn));
- bcm47xx_fill_sprom(out, prefix, false);
- return 0;
- case BCMA_HOSTTYPE_SOC:
- memset(out, 0, sizeof(struct ssb_sprom));
- core = bcma_find_core(bus, BCMA_CORE_80211);
- if (core) {
- snprintf(prefix, sizeof(prefix), "sb/%u/",
- core->core_index);
- bcm47xx_fill_sprom(out, prefix, true);
- } else {
- bcm47xx_fill_sprom(out, NULL, false);
- }
- return 0;
- default:
- pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
- return -EINVAL;
- }
-}
-
static void __init bcm47xx_register_bcma(void)
{
int err;
- err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
- if (err)
- pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);
-
err = bcma_host_soc_register(&bcm47xx_bus.bcma);
if (err)
panic("Failed to register BCMA bus (err %d)", err);
@@ -229,6 +173,7 @@ void __init plat_mem_setup(void)
printk(KERN_INFO "bcm47xx: using bcma bus\n");
#ifdef CONFIG_BCM47XX_BCMA
bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
+ bcm47xx_sprom_register_fallbacks();
bcm47xx_register_bcma();
bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
#ifdef CONFIG_HIGHMEM
@@ -239,6 +184,7 @@ void __init plat_mem_setup(void)
printk(KERN_INFO "bcm47xx: using ssb bus\n");
#ifdef CONFIG_BCM47XX_SSB
bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
+ bcm47xx_sprom_register_fallbacks();
bcm47xx_register_ssb();
bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id);
#endif
diff --git a/arch/mips/bcm47xx/sprom.c b/arch/mips/bcm47xx/sprom.c
index 41226b6..e772e77 100644
--- a/arch/mips/bcm47xx/sprom.c
+++ b/arch/mips/bcm47xx/sprom.c
@@ -801,3 +801,71 @@ void bcm47xx_fill_bcma_boardinfo(struct bcma_boardinfo *boardinfo,
nvram_read_u16(prefix, NULL, "boardtype", &boardinfo->type, 0, true);
}
#endif
+
+#if defined(CONFIG_BCM47XX_SSB)
+static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
+{
+ char prefix[10];
+
+ if (bus->bustype == SSB_BUSTYPE_PCI) {
+ memset(out, 0, sizeof(struct ssb_sprom));
+ snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
+ bus->host_pci->bus->number + 1,
+ PCI_SLOT(bus->host_pci->devfn));
+ bcm47xx_fill_sprom(out, prefix, false);
+ return 0;
+ } else {
+ pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
+ return -EINVAL;
+ }
+}
+#endif
+
+#if defined(CONFIG_BCM47XX_BCMA)
+static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
+{
+ char prefix[10];
+ struct bcma_device *core;
+
+ switch (bus->hosttype) {
+ case BCMA_HOSTTYPE_PCI:
+ memset(out, 0, sizeof(struct ssb_sprom));
+ snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
+ bus->host_pci->bus->number + 1,
+ PCI_SLOT(bus->host_pci->devfn));
+ bcm47xx_fill_sprom(out, prefix, false);
+ return 0;
+ case BCMA_HOSTTYPE_SOC:
+ memset(out, 0, sizeof(struct ssb_sprom));
+ core = bcma_find_core(bus, BCMA_CORE_80211);
+ if (core) {
+ snprintf(prefix, sizeof(prefix), "sb/%u/",
+ core->core_index);
+ bcm47xx_fill_sprom(out, prefix, true);
+ } else {
+ bcm47xx_fill_sprom(out, NULL, false);
+ }
+ return 0;
+ default:
+ pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
+ return -EINVAL;
+ }
+}
+#endif
+
+/*
+ * On bcm47xx we need to register SPROM fallback handler very early, so we can't
+ * use anything like platform device / driver for this.
+ */
+void bcm47xx_sprom_register_fallbacks(void)
+{
+#if defined(CONFIG_BCM47XX_SSB)
+ if (ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb))
+ pr_warn("Failed to registered ssb SPROM handler\n");
+#endif
+
+#if defined(CONFIG_BCM47XX_BCMA)
+ if (bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma))
+ pr_warn("Failed to registered bcma SPROM handler\n");
+#endif
+}
--
1.8.4.5

View file

@ -0,0 +1,120 @@
From e5810fa0c1bed16fdfb408862a2e17e962ec5cf6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 28 Oct 2014 14:40:38 +0100
Subject: [PATCH 158/158] MIPS: BCM47XX: Initialize bcma bus later (with mm
available)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Initializaion with memory allocator available will be much simpler, this
will allow cleanup in the bcma code.
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/8234/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/bcm47xx/bcm47xx_private.h | 3 +++
arch/mips/bcm47xx/irq.c | 8 ++++++++
arch/mips/bcm47xx/setup.c | 33 +++++++++++++++++++++++++++------
3 files changed, 38 insertions(+), 6 deletions(-)
diff --git a/arch/mips/bcm47xx/bcm47xx_private.h b/arch/mips/bcm47xx/bcm47xx_private.h
index 12a112d..ea909a5 100644
--- a/arch/mips/bcm47xx/bcm47xx_private.h
+++ b/arch/mips/bcm47xx/bcm47xx_private.h
@@ -15,6 +15,9 @@ int __init bcm47xx_buttons_register(void);
/* leds.c */
void __init bcm47xx_leds_register(void);
+/* setup.c */
+void __init bcm47xx_bus_setup(void);
+
/* workarounds.c */
void __init bcm47xx_workarounds(void);
diff --git a/arch/mips/bcm47xx/irq.c b/arch/mips/bcm47xx/irq.c
index e0585b7..21b4497 100644
--- a/arch/mips/bcm47xx/irq.c
+++ b/arch/mips/bcm47xx/irq.c
@@ -22,6 +22,8 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include "bcm47xx_private.h"
+
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
@@ -65,6 +67,12 @@ DEFINE_HWx_IRQDISPATCH(7)
void __init arch_init_irq(void)
{
+ /*
+ * This is the first arch callback after mm_init (we can use kmalloc),
+ * so let's finish bus initialization now.
+ */
+ bcm47xx_bus_setup();
+
#ifdef CONFIG_BCM47XX_BCMA
if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
bcma_write32(bcm47xx_bus.bcma.bus.drv_mips.core,
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index 444c65a..e43b504 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -156,15 +156,14 @@ static void __init bcm47xx_register_bcma(void)
err = bcma_host_soc_register(&bcm47xx_bus.bcma);
if (err)
panic("Failed to register BCMA bus (err %d)", err);
-
- err = bcma_host_soc_init(&bcm47xx_bus.bcma);
- if (err)
- panic("Failed to initialize BCMA bus (err %d)", err);
-
- bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
}
#endif
+/*
+ * Memory setup is done in the early part of MIPS's arch_mem_init. It's supposed
+ * to detect memory and record it with add_memory_region.
+ * Any extra initializaion performed here must not use kmalloc or bootmem.
+ */
void __init plat_mem_setup(void)
{
struct cpuinfo_mips *c = &current_cpu_data;
@@ -193,6 +192,28 @@ void __init plat_mem_setup(void)
_machine_restart = bcm47xx_machine_restart;
_machine_halt = bcm47xx_machine_halt;
pm_power_off = bcm47xx_machine_halt;
+}
+
+/*
+ * This finishes bus initialization doing things that were not possible without
+ * kmalloc. Make sure to call it late enough (after mm_init).
+ */
+void __init bcm47xx_bus_setup(void)
+{
+#ifdef CONFIG_BCM47XX_BCMA
+ if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
+ int err;
+
+ err = bcma_host_soc_init(&bcm47xx_bus.bcma);
+ if (err)
+ panic("Failed to initialize BCMA bus (err %d)", err);
+
+ bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo,
+ NULL);
+ }
+#endif
+
+ /* With bus initialized we can access NVRAM and detect the board */
bcm47xx_board_detect();
mips_set_machine_name(bcm47xx_board_get_name());
}
--
1.8.4.5

View file

@ -251,17 +251,17 @@ out the configuration than the in kernel cfe config reader.
+static int cfe_env;
+extern char *cfe_env_get(char *nv_buf, const char *name);
static u32 find_nvram_size(u32 end)
static u32 find_nvram_size(void __iomem *end)
{
@@ -46,6 +48,26 @@ static int nvram_find_and_copy(u32 base,
u32 *src, *dst;
u32 size;
@@ -51,6 +53,26 @@ static int nvram_find_and_copy(void __io
return -EEXIST;
}
+ cfe_env = 0;
+
+ /* XXX: hack for supporting the CFE environment stuff on WGT634U */
+ if (lim >= 8 * 1024 * 1024) {
+ src = (u32 *) KSEG1ADDR(base + 8 * 1024 * 1024 - 0x2000);
+ src = (u32 *) iobase + 8 * 1024 * 1024 - 0x2000;
+ dst = (u32 *) nvram_buf;
+
+ if ((*src & 0xff00ff) == 0x000001) {
@ -280,7 +280,7 @@ out the configuration than the in kernel cfe config reader.
/* TODO: when nvram is on nand flash check for bad blocks first. */
off = FLASH_MIN;
while (off <= lim) {
@@ -172,6 +194,13 @@ int bcm47xx_nvram_getenv(char *name, cha
@@ -142,6 +164,13 @@ int bcm47xx_nvram_getenv(char *name, cha
return err;
}

View file

@ -8,7 +8,7 @@
#include <asm/bootinfo.h>
#include <asm/idle.h>
#include <asm/prom.h>
@@ -282,6 +283,33 @@ static struct fixed_phy_status bcm47xx_f
@@ -249,6 +250,33 @@ static struct fixed_phy_status bcm47xx_f
.duplex = DUPLEX_FULL,
};
@ -42,7 +42,7 @@
static int __init bcm47xx_register_bus_complete(void)
{
switch (bcm47xx_bus_type) {
@@ -301,6 +329,7 @@ static int __init bcm47xx_register_bus_c
@@ -268,6 +296,7 @@ static int __init bcm47xx_register_bus_c
bcm47xx_workarounds();
fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);

View file

@ -1,6 +1,6 @@
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -136,6 +136,10 @@ static int bcm47xx_get_invariants(struct
@@ -119,6 +119,10 @@ static int bcm47xx_get_invariants(struct
if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);