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Diffstat (limited to 'arch/m68k/platform/54xx/config.c')
-rw-r--r--arch/m68k/platform/54xx/config.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/arch/m68k/platform/54xx/config.c b/arch/m68k/platform/54xx/config.c
new file mode 100644
index 00000000000..78130984db9
--- /dev/null
+++ b/arch/m68k/platform/54xx/config.c
@@ -0,0 +1,115 @@
+/***************************************************************************/
+
+/*
+ * linux/arch/m68knommu/platform/54xx/config.c
+ *
+ * Copyright (C) 2010, Philippe De Muyter <phdm@macqel.be>
+ */
+
+/***************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/m54xxsim.h>
+#include <asm/mcfuart.h>
+#include <asm/m54xxgpt.h>
+
+/***************************************************************************/
+
+static struct mcf_platform_uart m54xx_uart_platform[] = {
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE1,
+ .irq = 64 + 35,
+ },
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE2,
+ .irq = 64 + 34,
+ },
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE3,
+ .irq = 64 + 33,
+ },
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE4,
+ .irq = 64 + 32,
+ },
+};
+
+static struct platform_device m54xx_uart = {
+ .name = "mcfuart",
+ .id = 0,
+ .dev.platform_data = m54xx_uart_platform,
+};
+
+static struct platform_device *m54xx_devices[] __initdata = {
+ &m54xx_uart,
+};
+
+
+/***************************************************************************/
+
+static void __init m54xx_uart_init_line(int line, int irq)
+{
+ int rts_cts;
+
+ /* enable io pins */
+ switch (line) {
+ case 0:
+ rts_cts = 0; break;
+ case 1:
+ rts_cts = MCF_PAR_PSC_RTS_RTS; break;
+ case 2:
+ rts_cts = MCF_PAR_PSC_RTS_RTS | MCF_PAR_PSC_CTS_CTS; break;
+ case 3:
+ rts_cts = 0; break;
+ }
+ __raw_writeb(MCF_PAR_PSC_TXD | rts_cts | MCF_PAR_PSC_RXD,
+ MCF_MBAR + MCF_PAR_PSC(line));
+}
+
+static void __init m54xx_uarts_init(void)
+{
+ const int nrlines = ARRAY_SIZE(m54xx_uart_platform);
+ int line;
+
+ for (line = 0; (line < nrlines); line++)
+ m54xx_uart_init_line(line, m54xx_uart_platform[line].irq);
+}
+
+/***************************************************************************/
+
+static void mcf54xx_reset(void)
+{
+ /* disable interrupts and enable the watchdog */
+ asm("movew #0x2700, %sr\n");
+ __raw_writel(0, MCF_MBAR + MCF_GPT_GMS0);
+ __raw_writel(MCF_GPT_GCIR_CNT(1), MCF_MBAR + MCF_GPT_GCIR0);
+ __raw_writel(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS(4),
+ MCF_MBAR + MCF_GPT_GMS0);
+}
+
+/***************************************************************************/
+
+void __init config_BSP(char *commandp, int size)
+{
+ mach_reset = mcf54xx_reset;
+ m54xx_uarts_init();
+}
+
+/***************************************************************************/
+
+static int __init init_BSP(void)
+{
+
+ platform_add_devices(m54xx_devices, ARRAY_SIZE(m54xx_devices));
+ return 0;
+}
+
+arch_initcall(init_BSP);
+
+/***************************************************************************/