fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1

Signed-off-by: Anton Arapov <anton@redhat.com>

1 files changed, 162 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..ee043540bfa
--- /dev/null
+++ b/arch/m68k/platform/54xx/config.c
@@ -0,0 +1,162 @@
+/***************************************************************************/
+
+/*
+ *	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 <linux/mm.h>
+#include <linux/bootmem.h>
+#include <asm/pgalloc.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/m54xxsim.h>
+#include <asm/mcfuart.h>
+#include <asm/m54xxgpt.h>
+#ifdef CONFIG_MMU
+#include <asm/mmu_context.h>
+#endif
+
+/***************************************************************************/
+
+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);
+}
+
+/***************************************************************************/
+
+#ifdef CONFIG_MMU
+
+unsigned long num_pages;
+
+static void __init mcf54xx_bootmem_alloc(void)
+{
+	unsigned long start_pfn;
+	unsigned long memstart;
+
+	/* _rambase and _ramend will be naturally page aligned */
+	m68k_memory[0].addr = _rambase;
+	m68k_memory[0].size = _ramend - _rambase;
+
+	/* compute total pages in system */
+	num_pages = (_ramend - _rambase) >> PAGE_SHIFT;
+
+	/* page numbers */
+	memstart = PAGE_ALIGN(_ramstart);
+	min_low_pfn = _rambase >> PAGE_SHIFT;
+	start_pfn = memstart >> PAGE_SHIFT;
+	max_low_pfn = _ramend >> PAGE_SHIFT;
+	high_memory = (void *)_ramend;
+
+	m68k_virt_to_node_shift = fls(_ramend - _rambase - 1) - 6;
+	module_fixup(NULL, __start_fixup, __stop_fixup);
+
+	/* setup bootmem data */
+	m68k_setup_node(0);
+	memstart += init_bootmem_node(NODE_DATA(0), start_pfn,
+		min_low_pfn, max_low_pfn);
+	free_bootmem_node(NODE_DATA(0), memstart, _ramend - memstart);
+}
+
+#endif /* CONFIG_MMU */
+
+/***************************************************************************/
+
+void __init config_BSP(char *commandp, int size)
+{
+#ifdef CONFIG_MMU
+	mcf54xx_bootmem_alloc();
+	mmu_context_init();
+#endif
+	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);
+
+/***************************************************************************/