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Linux/arch/mips/rb532/setup.c

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  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 
 17 struct pci_reg __iomem *pci_reg;
 18 EXPORT_SYMBOL(pci_reg);
 19 
 20 static 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 
 29 static 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 
 36 static void rb_machine_halt(void)
 37 {
 38         for (;;)
 39                 continue;
 40 }
 41 
 42 void __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_nocache(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 
 71 const 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 

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