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openwrtv3/target/linux/brcm47xx/patches-3.0/0011-bcm47xx-make-it-possible-to-build-bcm47xx-without-ss.patch
Hauke Mehrtens 4c18da3df6 brcm47xx: add initial support for devices with bcma bus. 
Ethernet and wifi are not working and this is highly experimental.

SVN-Revision: 27301
2011-06-28 22:21:57 +00:00

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From 82d03f33ba3e41511e56bd6ae5ae93b3b1bd0b63 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Wed, 22 Jun 2011 22:16:35 +0200
Subject: [PATCH 11/14] bcm47xx: make it possible to build bcm47xx without ssb.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
arch/mips/Kconfig | 8 +-------
arch/mips/bcm47xx/Kconfig | 18 ++++++++++++++++++
arch/mips/bcm47xx/Makefile | 3 ++-
arch/mips/bcm47xx/gpio.c | 6 ++++++
arch/mips/bcm47xx/nvram.c | 4 ++++
arch/mips/bcm47xx/serial.c | 4 ++++
arch/mips/bcm47xx/setup.c | 8 ++++++++
arch/mips/bcm47xx/time.c | 2 ++
arch/mips/include/asm/mach-bcm47xx/bcm47xx.h | 4 ++++
arch/mips/include/asm/mach-bcm47xx/gpio.h | 12 ++++++++++++
arch/mips/pci/pci-bcm47xx.c | 6 ++++++
drivers/watchdog/bcm47xx_wdt.c | 4 ++++
12 files changed, 71 insertions(+), 8 deletions(-)
create mode 100644 arch/mips/bcm47xx/Kconfig
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -91,15 +91,8 @@ config BCM47XX
select DMA_NONCOHERENT
select HW_HAS_PCI
select IRQ_CPU
- select SYS_HAS_CPU_MIPS32_R1
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
- select SSB
- select SSB_DRIVER_MIPS
- select SSB_DRIVER_EXTIF
- select SSB_EMBEDDED
- select SSB_B43_PCI_BRIDGE if PCI
- select SSB_PCICORE_HOSTMODE if PCI
select GENERIC_GPIO
select SYS_HAS_EARLY_PRINTK
select CFE
@@ -785,6 +778,7 @@ endchoice
source "arch/mips/alchemy/Kconfig"
source "arch/mips/ath79/Kconfig"
+source "arch/mips/bcm47xx/Kconfig"
source "arch/mips/bcm63xx/Kconfig"
source "arch/mips/jazz/Kconfig"
source "arch/mips/jz4740/Kconfig"
--- /dev/null
+++ b/arch/mips/bcm47xx/Kconfig
@@ -0,0 +1,18 @@
+if BCM47XX
+
+config BCM47XX_SSB
+ bool "SSB Support for Broadcom BCM47XX"
+ select SYS_HAS_CPU_MIPS32_R1
+ select SSB
+ select SSB_DRIVER_MIPS
+ select SSB_DRIVER_EXTIF
+ select SSB_EMBEDDED
+ select SSB_B43_PCI_BRIDGE if PCI
+ select SSB_PCICORE_HOSTMODE if PCI
+ default y
+ help
+ Add support for old Broadcom BCM47xx boards with Sonics Silicon Backplane support bus.
+
+ This will generate an image with support for SSB and MIPS32 R2 instruction set.
+
+endif
--- a/arch/mips/bcm47xx/Makefile
+++ b/arch/mips/bcm47xx/Makefile
@@ -3,4 +3,5 @@
# under Linux.
#
-obj-y := gpio.o irq.o nvram.o prom.o serial.o setup.o time.o wgt634u.o
+obj-y += gpio.o irq.o nvram.o prom.o serial.o setup.o time.o
+obj-$(CONFIG_BCM47XX_SSB) += wgt634u.o
--- a/arch/mips/bcm47xx/gpio.c
+++ b/arch/mips/bcm47xx/gpio.c
@@ -21,6 +21,7 @@ static DECLARE_BITMAP(gpio_in_use, BCM47
int gpio_request(unsigned gpio, const char *tag)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) &&
((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
@@ -34,6 +35,7 @@ int gpio_request(unsigned gpio, const ch
return -EBUSY;
return 0;
+#endif
}
return -EINVAL;
}
@@ -42,6 +44,7 @@ EXPORT_SYMBOL(gpio_request);
void gpio_free(unsigned gpio)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) &&
((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
@@ -53,6 +56,7 @@ void gpio_free(unsigned gpio)
clear_bit(gpio, gpio_in_use);
return;
+#endif
}
}
EXPORT_SYMBOL(gpio_free);
@@ -60,6 +64,7 @@ EXPORT_SYMBOL(gpio_free);
int gpio_to_irq(unsigned gpio)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco))
return ssb_mips_irq(bcm47xx_bus.ssb.chipco.dev) + 2;
@@ -67,6 +72,7 @@ int gpio_to_irq(unsigned gpio)
return ssb_mips_irq(bcm47xx_bus.ssb.extif.dev) + 2;
else
return -EINVAL;
+#endif
}
return -EINVAL;
}
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -26,7 +26,9 @@ static char nvram_buf[NVRAM_SPACE];
/* Probe for NVRAM header */
static void early_nvram_init(void)
{
+#ifdef CONFIG_BCM47XX_SSB
struct ssb_mipscore *mcore_ssb;
+#endif
struct nvram_header *header;
int i;
u32 base = 0;
@@ -35,11 +37,13 @@ static void early_nvram_init(void)
u32 *src, *dst;
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
mcore_ssb = &bcm47xx_bus.ssb.mipscore;
base = mcore_ssb->flash_window;
lim = mcore_ssb->flash_window_size;
break;
+#endif
}
off = FLASH_MIN;
--- a/arch/mips/bcm47xx/serial.c
+++ b/arch/mips/bcm47xx/serial.c
@@ -23,6 +23,7 @@ static struct platform_device uart8250_d
},
};
+#ifdef CONFIG_BCM47XX_SSB
static int __init uart8250_init_ssb(void)
{
int i;
@@ -44,12 +45,15 @@ static int __init uart8250_init_ssb(void
}
return platform_device_register(&uart8250_device);
}
+#endif
static int __init uart8250_init(void)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
return uart8250_init_ssb();
+#endif
}
return -EINVAL;
}
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -47,9 +47,11 @@ static void bcm47xx_machine_restart(char
local_irq_disable();
/* Set the watchdog timer to reset immediately */
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
break;
+#endif
}
while (1)
cpu_relax();
@@ -60,14 +62,17 @@ static void bcm47xx_machine_halt(void)
/* Disable interrupts and watchdog and spin forever */
local_irq_disable();
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
break;
+#endif
}
while (1)
cpu_relax();
}
+#ifdef CONFIG_BCM47XX_SSB
#define READ_FROM_NVRAM(_outvar, name, buf) \
if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\
sprom->_outvar = simple_strtoul(buf, NULL, 0);
@@ -288,13 +293,16 @@ static void __init bcm47xx_register_ssb(
}
}
}
+#endif
void __init plat_mem_setup(void)
{
struct cpuinfo_mips *c = &current_cpu_data;
+#ifdef CONFIG_BCM47XX_SSB
bcm47xx_active_bus_type = BCM47XX_BUS_TYPE_SSB;
bcm47xx_register_ssb();
+#endif
_machine_restart = bcm47xx_machine_restart;
_machine_halt = bcm47xx_machine_halt;
--- a/arch/mips/bcm47xx/time.c
+++ b/arch/mips/bcm47xx/time.c
@@ -40,9 +40,11 @@ void __init plat_time_init(void)
write_c0_compare(0xffff);
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
hz = ssb_cpu_clock(&bcm47xx_bus.ssb.mipscore) / 2;
break;
+#endif
}
if (!hz)
--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
+++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
@@ -22,11 +22,15 @@
#include <linux/ssb/ssb.h>
enum bcm47xx_bus_type {
+#ifdef CONFIG_BCM47XX_SSB
BCM47XX_BUS_TYPE_SSB,
+#endif
};
union bcm47xx_bus {
+#ifdef CONFIG_BCM47XX_SSB
struct ssb_bus ssb;
+#endif
};
extern union bcm47xx_bus bcm47xx_bus;
--- a/arch/mips/include/asm/mach-bcm47xx/gpio.h
+++ b/arch/mips/include/asm/mach-bcm47xx/gpio.h
@@ -22,8 +22,10 @@ extern int gpio_to_irq(unsigned gpio);
static inline int gpio_get_value(unsigned gpio)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
return ssb_gpio_in(&bcm47xx_bus.ssb, 1 << gpio);
+#endif
}
return -EINVAL;
}
@@ -31,18 +33,22 @@ static inline int gpio_get_value(unsigne
static inline void gpio_set_value(unsigned gpio, int value)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
value ? 1 << gpio : 0);
+#endif
}
}
static inline int gpio_direction_input(unsigned gpio)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 0);
return 0;
+#endif
}
return -EINVAL;
}
@@ -50,6 +56,7 @@ static inline int gpio_direction_input(u
static inline int gpio_direction_output(unsigned gpio, int value)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
/* first set the gpio out value */
ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
@@ -57,6 +64,7 @@ static inline int gpio_direction_output(
/* then set the gpio mode */
ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 1 << gpio);
return 0;
+#endif
}
return -EINVAL;
}
@@ -64,10 +72,12 @@ static inline int gpio_direction_output(
static inline int gpio_intmask(unsigned gpio, int value)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_gpio_intmask(&bcm47xx_bus.ssb, 1 << gpio,
value ? 1 << gpio : 0);
return 0;
+#endif
}
return -EINVAL;
}
@@ -75,10 +85,12 @@ static inline int gpio_intmask(unsigned
static inline int gpio_polarity(unsigned gpio, int value)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_gpio_polarity(&bcm47xx_bus.ssb, 1 << gpio,
value ? 1 << gpio : 0);
return 0;
+#endif
}
return -EINVAL;
}
--- a/arch/mips/pci/pci-bcm47xx.c
+++ b/arch/mips/pci/pci-bcm47xx.c
@@ -25,6 +25,7 @@
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/ssb/ssb.h>
+#include <bcm47xx.h>
int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
@@ -33,9 +34,13 @@ int __init pcibios_map_irq(const struct
int pcibios_plat_dev_init(struct pci_dev *dev)
{
+#ifdef CONFIG_BCM47XX_SSB
int res;
u8 slot, pin;
+ if (bcm47xx_active_bus_type != BCM47XX_BUS_TYPE_SSB)
+ return 0;
+
res = ssb_pcibios_plat_dev_init(dev);
if (res < 0) {
printk(KERN_ALERT "PCI: Failed to init device %s\n",
@@ -55,5 +60,6 @@ int pcibios_plat_dev_init(struct pci_dev
}
dev->irq = res;
+#endif
return 0;
}
--- a/drivers/watchdog/bcm47xx_wdt.c
+++ b/drivers/watchdog/bcm47xx_wdt.c
@@ -55,17 +55,21 @@ static inline void bcm47xx_wdt_hw_start(
{
/* this is 2,5s on 100Mhz clock and 2s on 133 Mhz */
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0xfffffff);
break;
+#endif
}
}
static inline int bcm47xx_wdt_hw_stop(void)
{
switch (bcm47xx_active_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
return ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
+#endif
}
return -EINVAL;
}
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