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  */
  28 unsigned short ppdata;
  29 unsigned char ledbank = 0xff;
  30
  31 /***************************************************************************/
  32
  33 DEFINE_CLK(pll, "pll.0", MCF_CLK);
  34 DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
  35 DEFINE_CLK(mcftmr0, "mcftmr.0", MCF_BUSCLK);
  36 DEFINE_CLK(mcftmr1, "mcftmr.1", MCF_BUSCLK);
  37 DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
  38 DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
  39 DEFINE_CLK(mcfi2c0, "imx1-i2c.0", MCF_BUSCLK);
  40
  41 struct 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
  54 static 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
  65 void __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 /***************************************************************************/