m68k: move coldfire platform code

Move the m68k ColdFire platform support code directory to be with the
existing m68k platforms. Although the ColdFire is not a platform as such,
we have always kept all its support together. No reason to change that
as this time.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

1 files changed, 129 insertions, 0 deletions

diff --git a/arch/m68k/coldfire/m54xx.c b/arch/m68k/coldfire/m54xx.c
new file mode 100644
index 000000000000..952da53aa0bc
--- /dev/null
+++ b/arch/m68k/coldfire/m54xx.c
@@ -0,0 +1,129 @@
+/***************************************************************************/
+
+/*
+ *      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/clk.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/mcfclk.h>
+#include <asm/m54xxgpt.h>
+#include <asm/mcfclk.h>
+#ifdef CONFIG_MMU
+#include <asm/mmu_context.h>
+#endif
+
+/***************************************************************************/
+
+DEFINE_CLK(pll, "pll.0", MCF_CLK);
+DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
+DEFINE_CLK(mcfslt0, "mcfslt.0", MCF_BUSCLK);
+DEFINE_CLK(mcfslt1, "mcfslt.1", MCF_BUSCLK);
+DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
+DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
+DEFINE_CLK(mcfuart2, "mcfuart.2", MCF_BUSCLK);
+DEFINE_CLK(mcfuart3, "mcfuart.3", MCF_BUSCLK);
+
+struct clk *mcf_clks[] = {
+        &clk_pll,
+        &clk_sys,
+        &clk_mcfslt0,
+        &clk_mcfslt1,
+        &clk_mcfuart0,
+        &clk_mcfuart1,
+        &clk_mcfuart2,
+        &clk_mcfuart3,
+        NULL
+};
+
+/***************************************************************************/
+
+static void __init m54xx_uarts_init(void)
+{
+        /* enable io pins */
+        __raw_writeb(MCF_PAR_PSC_TXD | MCF_PAR_PSC_RXD, MCFGPIO_PAR_PSC0);
+        __raw_writeb(MCF_PAR_PSC_TXD | MCF_PAR_PSC_RXD | MCF_PAR_PSC_RTS_RTS,
+                MCFGPIO_PAR_PSC1);
+        __raw_writeb(MCF_PAR_PSC_TXD | MCF_PAR_PSC_RXD | MCF_PAR_PSC_RTS_RTS |
+                MCF_PAR_PSC_CTS_CTS, MCFGPIO_PAR_PSC2);
+        __raw_writeb(MCF_PAR_PSC_TXD | MCF_PAR_PSC_RXD, MCFGPIO_PAR_PSC3);
+}
+
+/***************************************************************************/
+
+static void mcf54xx_reset(void)
+{
+        /* disable interrupts and enable the watchdog */
+        asm("movew #0x2700, %sr\n");
+        __raw_writel(0, MCF_GPT_GMS0);
+        __raw_writel(MCF_GPT_GCIR_CNT(1), MCF_GPT_GCIR0);
+        __raw_writel(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS(4),
+                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;
+        mach_sched_init = hw_timer_init;
+        m54xx_uarts_init();
+}
+
+/***************************************************************************/