m68knommu: add smc91x support for ColdFire NETtel boards

The ColdFire based NETtel boards use the SMC9196 ethernet devices.
Switch to using a platform setup for these parts using the smc91x driver.
The init code is taken strait out of arch/m68k/include/asm/mcfsmc.h,
just cleaned up a bit.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>

diff --git a/arch/m68knommu/platform/5307/Makefile b/arch/m68knommu/platform/5307/Makefile
index 667db65..6de5269 100644 (file)
--- a/arch/m68knommu/platform/5307/Makefile
+++ b/arch/m68knommu/platform/5307/Makefile
@@ -14,5 +14,7 @@
 
 asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
 
-obj-y  += config.o gpio.o
+obj-y                  += config.o gpio.o
+obj-$(CONFIG_NETtel)   += nettel.o
+obj-$(CONFIG_CLEOPATRA)        += nettel.o
 

diff --git a/arch/m68knommu/platform/5307/nettel.c b/arch/m68knommu/platform/5307/nettel.c
new file mode 100644 (file)
index 0000000..e925ea4
--- /dev/null
+++ b/arch/m68knommu/platform/5307/nettel.c
@@ -0,0 +1,153 @@
+/***************************************************************************/
+
+/*
+ *     nettel.c -- startup code support for the NETtel boards
+ *
+ *     Copyright (C) 2009, Greg Ungerer (gerg@snapgear.com)
+ */
+
+/***************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/nettel.h>
+
+/***************************************************************************/
+
+/*
+ * Define the IO and interrupt resources of the 2 SMC9196 interfaces.
+ */
+#define        NETTEL_SMC0_ADDR        0x30600300
+#define        NETTEL_SMC0_IRQ         29
+
+#define        NETTEL_SMC1_ADDR        0x30600000
+#define        NETTEL_SMC1_IRQ         27
+
+/*
+ * We need some access into the SMC9196 registers. Define those registers
+ * we will need here (including the smc91x.h doesn't seem to give us these
+ * in a simple form).
+ */
+#define        SMC91xx_BANKSELECT      14
+#define        SMC91xx_BASEADDR        2
+#define        SMC91xx_BASEMAC         4
+
+/***************************************************************************/
+
+static struct resource nettel_smc91x_0_resources[] = {
+       {
+               .start          = NETTEL_SMC0_ADDR,
+               .end            = NETTEL_SMC0_ADDR + 0x20,
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               .start          = NETTEL_SMC0_IRQ,
+               .end            = NETTEL_SMC0_IRQ,
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct resource nettel_smc91x_1_resources[] = {
+       {
+               .start          = NETTEL_SMC1_ADDR,
+               .end            = NETTEL_SMC1_ADDR + 0x20,
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               .start          = NETTEL_SMC1_IRQ,
+               .end            = NETTEL_SMC1_IRQ,
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device nettel_smc91x[] = {
+       {
+               .name                   = "smc91x",
+               .id                     = 0,
+               .num_resources          = ARRAY_SIZE(nettel_smc91x_0_resources),
+               .resource               = nettel_smc91x_0_resources,
+       },
+       {
+               .name                   = "smc91x",
+               .id                     = 1,
+               .num_resources          = ARRAY_SIZE(nettel_smc91x_1_resources),
+               .resource               = nettel_smc91x_1_resources,
+       },
+};
+
+static struct platform_device *nettel_devices[] __initdata = {
+       &nettel_smc91x[0],
+       &nettel_smc91x[1],
+};
+
+/***************************************************************************/
+
+static u8 nettel_macdefault[] __initdata = {
+       0x00, 0xd0, 0xcf, 0x00, 0x00, 0x01,
+};
+
+/*
+ * Set flash contained MAC address into SMC9196 core. Make sure the flash
+ * MAC address is sane, and not an empty flash. If no good use the Moreton
+ * Bay default MAC address instead.
+ */
+
+static void __init nettel_smc91x_setmac(unsigned int ioaddr, unsigned int flashaddr)
+{
+       u16 *macp;
+
+       macp = (u16 *) flashaddr;
+       if ((macp[0] == 0xffff) && (macp[1] == 0xffff) && (macp[2] == 0xffff))
+               macp = (u16 *) &nettel_macdefault[0];
+
+       writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT);
+       writew(macp[0], ioaddr + SMC91xx_BASEMAC);
+       writew(macp[1], ioaddr + SMC91xx_BASEMAC + 2);
+       writew(macp[2], ioaddr + SMC91xx_BASEMAC + 4);
+}
+
+/***************************************************************************/
+
+/*
+ * Re-map the address space of at least one of the SMC ethernet
+ * parts. Both parts power up decoding the same address, so we
+ * need to move one of them first, before doing anything else.
+ */
+
+static void __init nettel_smc91x_init(void)
+{
+       writew(0x00ec, MCF_MBAR + MCFSIM_PADDR);
+       mcf_setppdata(0, 0x0080);
+       writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT);
+       writew(0x0067, NETTEL_SMC0_ADDR + SMC91xx_BASEADDR);
+       mcf_setppdata(0x0080, 0);
+
+       /* Set correct chip select timing for SMC9196 accesses */
+       writew(0x1180, MCF_MBAR + MCFSIM_CSCR3);
+
+       /* Set the SMC interrupts to be auto-vectored */
+       mcf_autovector(NETTEL_SMC0_IRQ);
+       mcf_autovector(NETTEL_SMC1_IRQ);
+
+       /* Set MAC addresses from flash for both interfaces */
+       nettel_smc91x_setmac(NETTEL_SMC0_ADDR, 0xf0006000);
+       nettel_smc91x_setmac(NETTEL_SMC1_ADDR, 0xf0006006);
+}
+
+/***************************************************************************/
+
+static int __init init_nettel(void)
+{
+       nettel_smc91x_init();
+       platform_add_devices(nettel_devices, ARRAY_SIZE(nettel_devices));
+       return 0;
+}
+
+arch_initcall(init_nettel);
+
+/***************************************************************************/