brcm47xx: add initial support for devices with bcma bus.

Ethernet and wifi are not working and this is highly experimental.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27301 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 151 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-3.0/0006-bcma-add-serial-console-support.patch b/target/linux/brcm47xx/patches-3.0/0006-bcma-add-serial-console-support.patch
new file mode 100644
index 0000000000..78724ee695
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.0/0006-bcma-add-serial-console-support.patch
@@ -0,0 +1,151 @@
+From b7c100827012ba588089807475affe0c69a3f817 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Mon, 6 Jun 2011 00:07:33 +0200
+Subject: [PATCH 06/14] bcma: add serial console support
+
+This adds support for serial console to bcma, when operating on an
+embedded device.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/bcma/bcma_private.h           |    6 +++
+ drivers/bcma/driver_chipcommon.c      |   64 +++++++++++++++++++++++++++++++++
+ drivers/bcma/driver_mips.c            |    9 +++++
+ include/linux/bcma/bcma_driver_mips.h |   11 ++++++
+ 4 files changed, 90 insertions(+), 0 deletions(-)
+
+--- a/drivers/bcma/bcma_private.h
++++ b/drivers/bcma/bcma_private.h
+@@ -29,6 +29,12 @@ void bcma_init_bus(struct bcma_bus *bus)
+ /* sprom.c */
+ int bcma_sprom_get(struct bcma_bus *bus);
+ 
++/* driver_chipcommon.c */
++#ifdef CONFIG_BCMA_DRIVER_MIPS
++extern int bcma_chipco_serial_init(struct bcma_drv_cc *cc,
++				   struct bcma_drv_mips_serial_port *ports);
++#endif /* CONFIG_BCMA_DRIVER_MIPS */
++
+ #ifdef CONFIG_BCMA_HOST_PCI
+ /* host_pci.c */
+ extern int __init bcma_host_pci_init(void);
+--- a/drivers/bcma/driver_chipcommon.c
++++ b/drivers/bcma/driver_chipcommon.c
+@@ -92,3 +92,67 @@ u32 bcma_chipco_gpio_polarity(struct bcm
+ {
+ 	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
+ }
++
++#ifdef CONFIG_BCMA_DRIVER_MIPS
++int bcma_chipco_serial_init(struct bcma_drv_cc *cc,
++			    struct bcma_drv_mips_serial_port *ports)
++{
++	int nr_ports = 0;
++	u32 plltype;
++	unsigned int irq;
++	u32 baud_base, div;
++	u32 i, n;
++	unsigned int ccrev = cc->core->id.rev;
++
++	plltype = (cc->capabilities & BCMA_CC_CAP_PLLT);
++	irq = bcma_core_mips_irq(cc->core);
++
++	if ((ccrev >= 11) && (ccrev != 15) && (ccrev != 20)) {
++		/* Fixed ALP clock */
++		baud_base = 20000000;
++		if (cc->capabilities & BCMA_CC_CAP_PMU) {
++			/* FIXME: baud_base is different for devices with a PMU */
++			WARN_ON(1);
++		}
++		div = 1;
++		if (ccrev >= 21) {
++			/* Turn off UART clock before switching clocksource. */
++			bcma_cc_write32(cc, BCMA_CC_CORECTL,
++				       bcma_cc_read32(cc, BCMA_CC_CORECTL)
++				       & ~BCMA_CC_CORECTL_UARTCLKEN);
++		}
++		/* Set the override bit so we don't divide it */
++		bcma_cc_write32(cc, BCMA_CC_CORECTL,
++			       bcma_cc_read32(cc, BCMA_CC_CORECTL)
++			       | BCMA_CC_CORECTL_UARTCLK0);
++		if (ccrev >= 21) {
++			/* Re-enable the UART clock. */
++			bcma_cc_write32(cc, BCMA_CC_CORECTL,
++				       bcma_cc_read32(cc, BCMA_CC_CORECTL)
++				       | BCMA_CC_CORECTL_UARTCLKEN);
++		}
++	} else
++		pr_err("serial not supported on this device ccrev: 0x%x\n",
++		       ccrev);
++
++	/* Determine the registers of the UARTs */
++	n = (cc->capabilities & BCMA_CC_CAP_NRUART);
++	for (i = 0; i < n; i++) {
++		void __iomem *cc_mmio;
++		void __iomem *uart_regs;
++
++		cc_mmio = cc->core->bus->mmio +
++			  (cc->core->core_index * BCMA_CORE_SIZE);
++		uart_regs = cc_mmio + BCMA_CC_UART0_DATA;
++		uart_regs += (i * 256);
++
++		nr_ports++;
++		ports[i].regs = uart_regs;
++		ports[i].irq = irq;
++		ports[i].baud_base = baud_base;
++		ports[i].reg_shift = 0;
++	}
++
++	return nr_ports;
++}
++#endif /* CONFIG_BCMA_DRIVER_MIPS */
+--- a/drivers/bcma/driver_mips.c
++++ b/drivers/bcma/driver_mips.c
+@@ -157,6 +157,14 @@ static void bcma_core_mips_dump_irq(stru
+ 	}
+ }
+ 
++static void bcma_core_mips_serial_init(struct bcma_drv_mips *mcore)
++{
++	struct bcma_bus *bus = mcore->core->bus;
++
++	mcore->nr_serial_ports = bcma_chipco_serial_init(&bus->drv_cc,
++							 mcore->serial_ports);
++}
++
+ static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore)
+ {
+ 	struct bcma_bus *bus = mcore->core->bus;
+@@ -229,6 +237,7 @@ void bcma_core_mips_init(struct bcma_drv
+ 	if (mcore->setup_done)
+ 		return;
+ 
++	bcma_core_mips_serial_init(mcore);
+ 	bcma_core_mips_flash_detect(mcore);
+ 	mcore->setup_done = true;
+ }
+--- a/include/linux/bcma/bcma_driver_mips.h
++++ b/include/linux/bcma/bcma_driver_mips.h
+@@ -32,11 +32,22 @@
+ 
+ struct bcma_device;
+ 
++struct bcma_drv_mips_serial_port {
++	void *regs;
++	unsigned long clockspeed;
++	unsigned int irq;
++	unsigned int baud_base;
++	unsigned int reg_shift;
++};
++
+ struct bcma_drv_mips {
+ 	struct bcma_device *core;
+ 	u8 setup_done:1;
+ 	unsigned int assigned_irqs;
+ 
++	int nr_serial_ports;
++	struct bcma_drv_mips_serial_port serial_ports[4];
++
+ 	u8 flash_buswidth;
+ 	u32 flash_window;
+ 	u32 flash_window_size;