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(val: 0x80000001, addr: 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(offset: pci0_res[0].start,
53 size: 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(addr: &pci_reg->pcic);
60 val &= 0xFFFFFF7;
61 __raw_writel(val, addr: (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

source code of linux/arch/mips/rb532/setup.c