LXR linux/arch/m68k/coldfire/m5307.c

   1// SPDX-License-Identifier: GPL-2.0
   2/***************************************************************************/
   3
   4/*
   5 *      m5307.c  -- platform support for ColdFire 5307 based boards
   6 *
   7 *      Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
   8 *      Copyright (C) 2000, Lineo (www.lineo.com)
   9 */
  10
  11/***************************************************************************/
  12
  13#include <linux/kernel.h>
  14#include <linux/param.h>
  15#include <linux/init.h>
  16#include <linux/io.h>
  17#include <asm/machdep.h>
  18#include <asm/coldfire.h>
  19#include <asm/mcfsim.h>
  20#include <asm/mcfwdebug.h>
  21#include <asm/mcfclk.h>
  22
  23/***************************************************************************/
  24
  25/*
  26 *      Some platforms need software versions of the GPIO data registers.
  27 */
  28unsigned short ppdata;
  29unsigned char ledbank = 0xff;
  30
  31/***************************************************************************/
  32
  33DEFINE_CLK(pll, "pll.0", MCF_CLK);
  34DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
  35DEFINE_CLK(mcftmr0, "mcftmr.0", MCF_BUSCLK);
  36DEFINE_CLK(mcftmr1, "mcftmr.1", MCF_BUSCLK);
  37DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
  38DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
  39DEFINE_CLK(mcfi2c0, "imx1-i2c.0", MCF_BUSCLK);
  40
  41struct clk *mcf_clks[] = {
  42        &clk_pll,
  43        &clk_sys,
  44        &clk_mcftmr0,
  45        &clk_mcftmr1,
  46        &clk_mcfuart0,
  47        &clk_mcfuart1,
  48        &clk_mcfi2c0,
  49        NULL
  50};
  51
  52/***************************************************************************/
  53
  54static void __init m5307_i2c_init(void)
  55{
  56#if IS_ENABLED(CONFIG_I2C_IMX)
  57        writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI0,
  58               MCFSIM_I2CICR);
  59        mcf_mapirq2imr(MCF_IRQ_I2C0, MCFINTC_I2C);
  60#endif /* IS_ENABLED(CONFIG_I2C_IMX) */
  61}
  62
  63/***************************************************************************/
  64
  65void __init config_BSP(char *commandp, int size)
  66{
  67#if defined(CONFIG_NETtel) || \
  68    defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA)
  69        /* Copy command line from FLASH to local buffer... */
  70        memcpy(commandp, (char *) 0xf0004000, size);
  71        commandp[size-1] = 0;
  72#endif
  73
  74        mach_sched_init = hw_timer_init;
  75
  76        /* Only support the external interrupts on their primary level */
  77        mcf_mapirq2imr(25, MCFINTC_EINT1);
  78        mcf_mapirq2imr(27, MCFINTC_EINT3);
  79        mcf_mapirq2imr(29, MCFINTC_EINT5);
  80        mcf_mapirq2imr(31, MCFINTC_EINT7);
  81
  82#ifdef CONFIG_BDM_DISABLE
  83        /*
  84         * Disable the BDM clocking.  This also turns off most of the rest of
  85         * the BDM device.  This is good for EMC reasons. This option is not
  86         * incompatible with the memory protection option.
  87         */
  88        wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK);
  89#endif
  90        m5307_i2c_init();
  91}
  92
  93/***************************************************************************/
  94