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(val: 0x80000001, addr: 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(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 | |
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 | |