linux/arch/m68k/coldfire/m5307.c
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   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/clkdev.h>
  14#include <linux/kernel.h>
  15#include <linux/param.h>
  16#include <linux/init.h>
  17#include <linux/io.h>
  18#include <asm/machdep.h>
  19#include <asm/coldfire.h>
  20#include <asm/mcfsim.h>
  21#include <asm/mcfwdebug.h>
  22#include <asm/mcfclk.h>
  23
  24/***************************************************************************/
  25
  26/*
  27 *      Some platforms need software versions of the GPIO data registers.
  28 */
  29unsigned short ppdata;
  30unsigned char ledbank = 0xff;
  31
  32/***************************************************************************/
  33
  34DEFINE_CLK(pll, "pll.0", MCF_CLK);
  35DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
  36
  37static struct clk_lookup m5307_clk_lookup[] = {
  38        CLKDEV_INIT(NULL, "pll.0", &clk_pll),
  39        CLKDEV_INIT(NULL, "sys.0", &clk_sys),
  40        CLKDEV_INIT("mcftmr.0", NULL, &clk_sys),
  41        CLKDEV_INIT("mcftmr.1", NULL, &clk_sys),
  42        CLKDEV_INIT("mcfuart.0", NULL, &clk_sys),
  43        CLKDEV_INIT("mcfuart.1", NULL, &clk_sys),
  44        CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys),
  45};
  46
  47/***************************************************************************/
  48
  49static void __init m5307_i2c_init(void)
  50{
  51#if IS_ENABLED(CONFIG_I2C_IMX)
  52        writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI0,
  53               MCFSIM_I2CICR);
  54        mcf_mapirq2imr(MCF_IRQ_I2C0, MCFINTC_I2C);
  55#endif /* IS_ENABLED(CONFIG_I2C_IMX) */
  56}
  57
  58/***************************************************************************/
  59
  60void __init config_BSP(char *commandp, int size)
  61{
  62#if defined(CONFIG_NETtel) || \
  63    defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA)
  64        /* Copy command line from FLASH to local buffer... */
  65        memcpy(commandp, (char *) 0xf0004000, size);
  66        commandp[size-1] = 0;
  67#endif
  68
  69        mach_sched_init = hw_timer_init;
  70
  71        /* Only support the external interrupts on their primary level */
  72        mcf_mapirq2imr(25, MCFINTC_EINT1);
  73        mcf_mapirq2imr(27, MCFINTC_EINT3);
  74        mcf_mapirq2imr(29, MCFINTC_EINT5);
  75        mcf_mapirq2imr(31, MCFINTC_EINT7);
  76
  77#ifdef CONFIG_BDM_DISABLE
  78        /*
  79         * Disable the BDM clocking.  This also turns off most of the rest of
  80         * the BDM device.  This is good for EMC reasons. This option is not
  81         * incompatible with the memory protection option.
  82         */
  83        wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK);
  84#endif
  85        m5307_i2c_init();
  86
  87        clkdev_add_table(m5307_clk_lookup, ARRAY_SIZE(m5307_clk_lookup));
  88}
  89
  90/***************************************************************************/
  91