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7#include <linux/irqchip.h>
8#include <linux/logic_pio.h>
9#include <linux/memblock.h>
10#include <linux/of.h>
11#include <linux/of_address.h>
12#include <asm/bootinfo.h>
13#include <asm/traps.h>
14#include <asm/smp-ops.h>
15#include <asm/cacheflush.h>
16#include <asm/fw/fw.h>
17
18#include <loongson.h>
19#include <boot_param.h>
20
21#define NODE_ID_OFFSET_ADDR ((void __iomem *)TO_UNCAC(0x1001041c))
22
23u32 node_id_offset;
24
25static void __init mips_nmi_setup(void)
26{
27 void *base;
28
29 base = (void *)(CAC_BASE + 0x380);
30 memcpy(base, except_vec_nmi, 0x80);
31 flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
32}
33
34void ls7a_early_config(void)
35{
36 node_id_offset = ((readl(NODE_ID_OFFSET_ADDR) >> 8) & 0x1f) + 36;
37}
38
39void rs780e_early_config(void)
40{
41 node_id_offset = 37;
42}
43
44void virtual_early_config(void)
45{
46 node_id_offset = 44;
47}
48
49void __init szmem(unsigned int node)
50{
51 u32 i, mem_type;
52 static unsigned long num_physpages;
53 u64 node_id, node_psize, start_pfn, end_pfn, mem_start, mem_size;
54
55
56 if (loongson_sysconf.fw_interface != LOONGSON_LEFI)
57 return;
58
59
60 for (i = 0; i < loongson_memmap->nr_map; i++) {
61 node_id = loongson_memmap->map[i].node_id;
62 if (node_id != node)
63 continue;
64
65 mem_type = loongson_memmap->map[i].mem_type;
66 mem_size = loongson_memmap->map[i].mem_size;
67 mem_start = loongson_memmap->map[i].mem_start;
68
69 switch (mem_type) {
70 case SYSTEM_RAM_LOW:
71 case SYSTEM_RAM_HIGH:
72 start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT;
73 node_psize = (mem_size << 20) >> PAGE_SHIFT;
74 end_pfn = start_pfn + node_psize;
75 num_physpages += node_psize;
76 pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
77 (u32)node_id, mem_type, mem_start, mem_size);
78 pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
79 start_pfn, end_pfn, num_physpages);
80 memblock_add_node(PFN_PHYS(start_pfn), PFN_PHYS(node_psize), node);
81 break;
82 case SYSTEM_RAM_RESERVED:
83 pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
84 (u32)node_id, mem_type, mem_start, mem_size);
85 memblock_reserve(((node_id << 44) + mem_start), mem_size << 20);
86 break;
87 }
88 }
89}
90
91#ifndef CONFIG_NUMA
92static void __init prom_init_memory(void)
93{
94 szmem(0);
95}
96#endif
97
98void __init prom_init(void)
99{
100 fw_init_cmdline();
101
102 if (fw_arg2 == 0 || (fdt_magic(fw_arg2) == FDT_MAGIC)) {
103 loongson_sysconf.fw_interface = LOONGSON_DTB;
104 prom_dtb_init_env();
105 } else {
106 loongson_sysconf.fw_interface = LOONGSON_LEFI;
107 prom_lefi_init_env();
108 }
109
110
111 set_io_port_base(PCI_IOBASE);
112
113 if (loongson_sysconf.early_config)
114 loongson_sysconf.early_config();
115
116#ifdef CONFIG_NUMA
117 prom_init_numa_memory();
118#else
119 prom_init_memory();
120#endif
121
122
123 if ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64R)
124 setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE), 0, 1024);
125 else
126 setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024);
127
128 register_smp_ops(&loongson3_smp_ops);
129 board_nmi_handler_setup = mips_nmi_setup;
130}
131
132static int __init add_legacy_isa_io(struct fwnode_handle *fwnode, resource_size_t hw_start,
133 resource_size_t size)
134{
135 int ret = 0;
136 struct logic_pio_hwaddr *range;
137 unsigned long vaddr;
138
139 range = kzalloc(sizeof(*range), GFP_ATOMIC);
140 if (!range)
141 return -ENOMEM;
142
143 range->fwnode = fwnode;
144 range->size = size = round_up(size, PAGE_SIZE);
145 range->hw_start = hw_start;
146 range->flags = LOGIC_PIO_CPU_MMIO;
147
148 ret = logic_pio_register_range(range);
149 if (ret) {
150 kfree(range);
151 return ret;
152 }
153
154
155 if (range->io_start != 0) {
156 logic_pio_unregister_range(range);
157 kfree(range);
158 return -EINVAL;
159 }
160
161 vaddr = PCI_IOBASE + range->io_start;
162
163 ioremap_page_range(vaddr, vaddr + size, hw_start, pgprot_device(PAGE_KERNEL));
164
165 return 0;
166}
167
168static __init void reserve_pio_range(void)
169{
170 struct device_node *np;
171
172 for_each_node_by_name(np, "isa") {
173 struct of_range range;
174 struct of_range_parser parser;
175
176 pr_info("ISA Bridge: %pOF\n", np);
177
178 if (of_range_parser_init(&parser, np)) {
179 pr_info("Failed to parse resources.\n");
180 break;
181 }
182
183 for_each_of_range(&parser, &range) {
184 switch (range.flags & IORESOURCE_TYPE_BITS) {
185 case IORESOURCE_IO:
186 pr_info(" IO 0x%016llx..0x%016llx -> 0x%016llx\n",
187 range.cpu_addr,
188 range.cpu_addr + range.size - 1,
189 range.bus_addr);
190 if (add_legacy_isa_io(&np->fwnode, range.cpu_addr, range.size))
191 pr_warn("Failed to reserve legacy IO in Logic PIO\n");
192 break;
193 case IORESOURCE_MEM:
194 pr_info(" MEM 0x%016llx..0x%016llx -> 0x%016llx\n",
195 range.cpu_addr,
196 range.cpu_addr + range.size - 1,
197 range.bus_addr);
198 break;
199 }
200 }
201 }
202}
203
204void __init arch_init_irq(void)
205{
206 reserve_pio_range();
207 irqchip_init();
208}
209
