arch/m68k/platform/528x/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/528x/config.c
   5  *
   6  *      Sub-architcture dependent initialization code for the Freescale
   7  *      5280, 5281 and 5282 CPUs.
   8  *
   9  *      Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
  10  *      Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
  11  */
  12
  13 /***************************************************************************/
  14
  15 #include <linux/kernel.h>
  16 #include <linux/param.h>
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/io.h>
  20 #include <asm/machdep.h>
  21 #include <asm/coldfire.h>
  22 #include <asm/mcfsim.h>
  23 #include <asm/mcfuart.h>
  24 #include <asm/mcfgpio.h>
  25
  26 /***************************************************************************/
  27
  28 struct mcf_gpio_chip mcf_gpio_chips[] = {
  29         MCFGPS(NQ, 1, 7, MCFEPORT_EPDDR, MCFEPORT_EPDR, MCFEPORT_EPPDR),
  30         MCFGPS(TA, 8, 4, MCFGPTA_GPTDDR, MCFGPTA_GPTPORT, MCFGPTB_GPTPORT),
  31         MCFGPS(TB, 16, 4, MCFGPTB_GPTDDR, MCFGPTB_GPTPORT, MCFGPTB_GPTPORT),
  32         MCFGPS(QA, 24, 4, MCFQADC_DDRQA, MCFQADC_PORTQA, MCFQADC_PORTQA),
  33         MCFGPS(QB, 32, 4, MCFQADC_DDRQB, MCFQADC_PORTQB, MCFQADC_PORTQB),
  34         MCFGPF(A, 40, 8),
  35         MCFGPF(B, 48, 8),
  36         MCFGPF(C, 56, 8),
  37         MCFGPF(D, 64, 8),
  38         MCFGPF(E, 72, 8),
  39         MCFGPF(F, 80, 8),
  40         MCFGPF(G, 88, 8),
  41         MCFGPF(H, 96, 8),
  42         MCFGPF(J, 104, 8),
  43         MCFGPF(DD, 112, 8),
  44         MCFGPF(EH, 120, 8),
  45         MCFGPF(EL, 128, 8),
  46         MCFGPF(AS, 136, 6),
  47         MCFGPF(QS, 144, 7),
  48         MCFGPF(SD, 152, 6),
  49         MCFGPF(TC, 160, 4),
  50         MCFGPF(TD, 168, 4),
  51         MCFGPF(UA, 176, 4),
  52 };
  53
  54 unsigned int mcf_gpio_chips_size = ARRAY_SIZE(mcf_gpio_chips);
  55
  56 /***************************************************************************/
  57
  58 #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
  59
  60 static void __init m528x_qspi_init(void)
  61 {
  62         /* setup Port QS for QSPI with gpio CS control */
  63         __raw_writeb(0x07, MCFGPIO_PQSPAR);
  64 }
  65
  66 #endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
  67
  68 /***************************************************************************/
  69
  70 static void __init m528x_uarts_init(void)
  71 {
  72         u8 port;
  73
  74         /* make sure PUAPAR is set for UART0 and UART1 */
  75         port = readb(MCF5282_GPIO_PUAPAR);
  76         port |= 0x03 | (0x03 << 2);
  77         writeb(port, MCF5282_GPIO_PUAPAR);
  78 }
  79
  80 /***************************************************************************/
  81
  82 static void __init m528x_fec_init(void)
  83 {
  84         u16 v16;
  85
  86         /* Set multi-function pins to ethernet mode for fec0 */
  87         v16 = readw(MCF_IPSBAR + 0x100056);
  88         writew(v16 | 0xf00, MCF_IPSBAR + 0x100056);
  89         writeb(0xc0, MCF_IPSBAR + 0x100058);
  90 }
  91
  92 /***************************************************************************/
  93
  94 #ifdef CONFIG_WILDFIRE
  95 void wildfire_halt(void)
  96 {
  97         writeb(0, 0x30000007);
  98         writeb(0x2, 0x30000007);
  99 }
 100 #endif
 101
 102 #ifdef CONFIG_WILDFIREMOD
 103 void wildfiremod_halt(void)
 104 {
 105         printk(KERN_INFO "WildFireMod hibernating...\n");
 106
 107         /* Set portE.5 to Digital IO */
 108         MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));
 109
 110         /* Make portE.5 an output */
 111         MCF5282_GPIO_DDRE |= (1 << 5);
 112
 113         /* Now toggle portE.5 from low to high */
 114         MCF5282_GPIO_PORTE &= ~(1 << 5);
 115         MCF5282_GPIO_PORTE |= (1 << 5);
 116
 117         printk(KERN_EMERG "Failed to hibernate. Halting!\n");
 118 }
 119 #endif
 120
 121 void __init config_BSP(char *commandp, int size)
 122 {
 123 #ifdef CONFIG_WILDFIRE
 124         mach_halt = wildfire_halt;
 125 #endif
 126 #ifdef CONFIG_WILDFIREMOD
 127         mach_halt = wildfiremod_halt;
 128 #endif
 129         mach_sched_init = hw_timer_init;
 130         m528x_uarts_init();
 131         m528x_fec_init();
 132 #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 133         m528x_qspi_init();
 134 #endif
 135 }
 136
 137 /***************************************************************************/