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10#include <common.h>
11#include <cpu_func.h>
12#include <dm.h>
13#include <errno.h>
14#include <malloc.h>
15#include <xen.h>
16#include <asm/global_data.h>
17
18#include <asm/io.h>
19#include <asm/armv8/mmu.h>
20#include <asm/xen.h>
21#include <asm/xen/hypercall.h>
22#include <asm/xen/system.h>
23
24#include <linux/compiler.h>
25
26#include <xen/gnttab.h>
27#include <xen/hvm.h>
28
29DECLARE_GLOBAL_DATA_PTR;
30
31int board_init(void)
32{
33 return 0;
34}
35
36
37
38
39
40
41
42void *board_fdt_blob_setup(int *err)
43{
44 *err = 0;
45 if (fdt_magic(rom_pointer[0]) != FDT_MAGIC) {
46 *err = -ENXIO;
47 return NULL;
48 }
49 return (void *)rom_pointer[0];
50}
51
52#define MAX_MEM_MAP_REGIONS 5
53static struct mm_region xen_mem_map[MAX_MEM_MAP_REGIONS];
54struct mm_region *mem_map = xen_mem_map;
55
56static int get_next_memory_node(const void *blob, int mem)
57{
58 do {
59 mem = fdt_node_offset_by_prop_value(blob, mem,
60 "device_type", "memory", 7);
61 } while (!fdtdec_get_is_enabled(blob, mem));
62
63 return mem;
64}
65
66static int setup_mem_map(void)
67{
68 int i = 0, ret, mem, reg = 0;
69 struct fdt_resource res;
70 const void *blob = gd->fdt_blob;
71 u64 gfn;
72 phys_addr_t gnttab_base;
73 phys_size_t gnttab_sz;
74
75
76
77
78
79 ret = hvm_get_parameter_maintain_dcache(HVM_PARAM_CONSOLE_PFN, &gfn);
80 if (ret < 0) {
81 printf("%s: Can't get HVM_PARAM_CONSOLE_PFN, ret %d\n",
82 __func__, ret);
83 return -EINVAL;
84 }
85
86 xen_mem_map[i].virt = PFN_PHYS(gfn);
87 xen_mem_map[i].phys = PFN_PHYS(gfn);
88 xen_mem_map[i].size = PAGE_SIZE;
89 xen_mem_map[i].attrs = (PTE_BLOCK_MEMTYPE(MT_NORMAL) |
90 PTE_BLOCK_INNER_SHARE);
91 i++;
92
93 ret = hvm_get_parameter_maintain_dcache(HVM_PARAM_STORE_PFN, &gfn);
94 if (ret < 0) {
95 printf("%s: Can't get HVM_PARAM_STORE_PFN, ret %d\n",
96 __func__, ret);
97 return -EINVAL;
98 }
99
100 xen_mem_map[i].virt = PFN_PHYS(gfn);
101 xen_mem_map[i].phys = PFN_PHYS(gfn);
102 xen_mem_map[i].size = PAGE_SIZE;
103 xen_mem_map[i].attrs = (PTE_BLOCK_MEMTYPE(MT_NORMAL) |
104 PTE_BLOCK_INNER_SHARE);
105 i++;
106
107
108 get_gnttab_base(&gnttab_base, &gnttab_sz);
109
110 xen_mem_map[i].virt = gnttab_base;
111 xen_mem_map[i].phys = gnttab_base;
112 xen_mem_map[i].size = gnttab_sz;
113 xen_mem_map[i].attrs = (PTE_BLOCK_MEMTYPE(MT_NORMAL) |
114 PTE_BLOCK_INNER_SHARE);
115 i++;
116
117 mem = get_next_memory_node(blob, -1);
118 if (mem < 0) {
119 printf("%s: Missing /memory node\n", __func__);
120 return -EINVAL;
121 }
122
123 for (; i < MAX_MEM_MAP_REGIONS; i++) {
124 ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
125 if (ret == -FDT_ERR_NOTFOUND) {
126 reg = 0;
127 mem = get_next_memory_node(blob, mem);
128 if (mem == -FDT_ERR_NOTFOUND)
129 break;
130
131 ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
132 if (ret == -FDT_ERR_NOTFOUND)
133 break;
134 }
135 if (ret != 0) {
136 printf("No reg property for memory node\n");
137 return -EINVAL;
138 }
139
140 xen_mem_map[i].virt = (phys_addr_t)res.start;
141 xen_mem_map[i].phys = (phys_addr_t)res.start;
142 xen_mem_map[i].size = (phys_size_t)(res.end - res.start + 1);
143 xen_mem_map[i].attrs = (PTE_BLOCK_MEMTYPE(MT_NORMAL) |
144 PTE_BLOCK_INNER_SHARE);
145 }
146 return 0;
147}
148
149void enable_caches(void)
150{
151
152 setup_mem_map();
153 icache_enable();
154 dcache_enable();
155}
156
157
158int dram_init(void)
159{
160 int ret;
161
162 ret = fdtdec_setup_mem_size_base();
163 if (ret < 0)
164 return ret;
165
166 return setup_mem_map();
167}
168
169int dram_init_banksize(void)
170{
171 return fdtdec_setup_memory_banksize();
172}
173
174
175
176
177void reset_cpu(void)
178{
179}
180
181int ft_system_setup(void *blob, struct bd_info *bd)
182{
183 return 0;
184}
185
186int ft_board_setup(void *blob, struct bd_info *bd)
187{
188 return 0;
189}
190
191int print_cpuinfo(void)
192{
193 printf("Xen virtual CPU\n");
194 return 0;
195}
196
197void board_cleanup_before_linux(void)
198{
199 xen_fini();
200}
201