LXR linux/arch/mips/rb532/setup.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * setup.c - boot time setup code
   4 */
   5
   6#include <linux/init.h>
   7#include <linux/export.h>
   8
   9#include <asm/bootinfo.h>
  10#include <asm/reboot.h>
  11#include <asm/time.h>
  12#include <linux/ioport.h>
  13
  14#include <asm/mach-rc32434/rb.h>
  15#include <asm/mach-rc32434/pci.h>
  16
  17struct pci_reg __iomem *pci_reg;
  18EXPORT_SYMBOL(pci_reg);
  19
  20static struct resource pci0_res[] = {
  21        {
  22                .name = "pci_reg0",
  23                .start = PCI0_BASE_ADDR,
  24                .end = PCI0_BASE_ADDR + sizeof(struct pci_reg),
  25                .flags = IORESOURCE_MEM,
  26        }
  27};
  28
  29static void rb_machine_restart(char *command)
  30{
  31        /* just jump to the reset vector */
  32        writel(0x80000001, IDT434_REG_BASE + RST);
  33        ((void (*)(void)) KSEG1ADDR(0x1FC00000u))();
  34}
  35
  36static void rb_machine_halt(void)
  37{
  38        for (;;)
  39                continue;
  40}
  41
  42void __init plat_mem_setup(void)
  43{
  44        u32 val;
  45
  46        _machine_restart = rb_machine_restart;
  47        _machine_halt = rb_machine_halt;
  48        pm_power_off = rb_machine_halt;
  49
  50        set_io_port_base(KSEG1);
  51
  52        pci_reg = ioremap(pci0_res[0].start,
  53                                pci0_res[0].end - pci0_res[0].start);
  54        if (!pci_reg) {
  55                printk(KERN_ERR "Could not remap PCI registers\n");
  56                return;
  57        }
  58
  59        val = __raw_readl(&pci_reg->pcic);
  60        val &= 0xFFFFFF7;
  61        __raw_writel(val, (void *)&pci_reg->pcic);
  62
  63#ifdef CONFIG_PCI
  64        /* Enable PCI interrupts in EPLD Mask register */
  65        *epld_mask = 0x0;
  66        *(epld_mask + 1) = 0x0;
  67#endif
  68        write_c0_wired(0);
  69}
  70
  71const char *get_system_type(void)
  72{
  73        switch (mips_machtype) {
  74        case MACH_MIKROTIK_RB532A:
  75                return "Mikrotik RB532A";
  76                break;
  77        default:
  78                return "Mikrotik RB532";
  79                break;
  80        }
  81}
  82