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-rw-r--r--arch/m68k/platform/coldfire/nettel.c153
1 files changed, 153 insertions, 0 deletions
diff --git a/arch/m68k/platform/coldfire/nettel.c b/arch/m68k/platform/coldfire/nettel.c
new file mode 100644
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--- /dev/null
+++ b/arch/m68k/platform/coldfire/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);
+
+/***************************************************************************/