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(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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