1 | #include <xen/libelf.h> |
---|
2 | |
---|
3 | #define INVALID_P2M_ENTRY ((xen_pfn_t)-1) |
---|
4 | |
---|
5 | /* --- typedefs and structs ---------------------------------------- */ |
---|
6 | |
---|
7 | typedef uint64_t xen_vaddr_t; |
---|
8 | typedef uint64_t xen_paddr_t; |
---|
9 | |
---|
10 | #define PRIpfn PRI_xen_pfn |
---|
11 | |
---|
12 | struct xc_dom_seg { |
---|
13 | xen_vaddr_t vstart; |
---|
14 | xen_vaddr_t vend; |
---|
15 | xen_pfn_t pfn; |
---|
16 | }; |
---|
17 | |
---|
18 | struct xc_dom_mem { |
---|
19 | struct xc_dom_mem *next; |
---|
20 | void *mmap_ptr; |
---|
21 | size_t mmap_len; |
---|
22 | unsigned char memory[0]; |
---|
23 | }; |
---|
24 | |
---|
25 | struct xc_dom_phys { |
---|
26 | struct xc_dom_phys *next; |
---|
27 | void *ptr; |
---|
28 | xen_pfn_t first; |
---|
29 | xen_pfn_t count; |
---|
30 | }; |
---|
31 | |
---|
32 | struct xc_dom_image { |
---|
33 | /* files */ |
---|
34 | void *kernel_blob; |
---|
35 | size_t kernel_size; |
---|
36 | void *ramdisk_blob; |
---|
37 | size_t ramdisk_size; |
---|
38 | |
---|
39 | /* arguments and parameters */ |
---|
40 | char *cmdline; |
---|
41 | uint32_t f_requested[XENFEAT_NR_SUBMAPS]; |
---|
42 | |
---|
43 | /* info from (elf) kernel image */ |
---|
44 | struct elf_dom_parms parms; |
---|
45 | char *guest_type; |
---|
46 | |
---|
47 | /* memory layout */ |
---|
48 | struct xc_dom_seg kernel_seg; |
---|
49 | struct xc_dom_seg ramdisk_seg; |
---|
50 | struct xc_dom_seg p2m_seg; |
---|
51 | struct xc_dom_seg pgtables_seg; |
---|
52 | struct xc_dom_seg devicetree_seg; |
---|
53 | xen_pfn_t start_info_pfn; |
---|
54 | xen_pfn_t console_pfn; |
---|
55 | xen_pfn_t xenstore_pfn; |
---|
56 | xen_pfn_t shared_info_pfn; |
---|
57 | xen_pfn_t bootstack_pfn; |
---|
58 | xen_vaddr_t virt_alloc_end; |
---|
59 | xen_vaddr_t bsd_symtab_start; |
---|
60 | |
---|
61 | /* initial page tables */ |
---|
62 | unsigned int pgtables; |
---|
63 | unsigned int pg_l4; |
---|
64 | unsigned int pg_l3; |
---|
65 | unsigned int pg_l2; |
---|
66 | unsigned int pg_l1; |
---|
67 | unsigned int alloc_bootstack; |
---|
68 | unsigned int extra_pages; |
---|
69 | xen_vaddr_t virt_pgtab_end; |
---|
70 | |
---|
71 | /* other state info */ |
---|
72 | uint32_t f_active[XENFEAT_NR_SUBMAPS]; |
---|
73 | xen_pfn_t *p2m_host; |
---|
74 | void *p2m_guest; |
---|
75 | |
---|
76 | /* physical memory */ |
---|
77 | xen_pfn_t total_pages; |
---|
78 | struct xc_dom_phys *phys_pages; |
---|
79 | int realmodearea_log; |
---|
80 | |
---|
81 | /* malloc memory pool */ |
---|
82 | struct xc_dom_mem *memblocks; |
---|
83 | |
---|
84 | /* memory footprint stats */ |
---|
85 | size_t alloc_malloc; |
---|
86 | size_t alloc_mem_map; |
---|
87 | size_t alloc_file_map; |
---|
88 | size_t alloc_domU_map; |
---|
89 | |
---|
90 | /* misc xen domain config stuff */ |
---|
91 | unsigned long flags; |
---|
92 | unsigned int console_evtchn; |
---|
93 | unsigned int xenstore_evtchn; |
---|
94 | xen_pfn_t shared_info_mfn; |
---|
95 | |
---|
96 | int guest_xc; |
---|
97 | domid_t guest_domid; |
---|
98 | int shadow_enabled; |
---|
99 | |
---|
100 | int xen_version; |
---|
101 | xen_capabilities_info_t xen_caps; |
---|
102 | |
---|
103 | /* kernel loader, arch hooks */ |
---|
104 | struct xc_dom_loader *kernel_loader; |
---|
105 | void *private_loader; |
---|
106 | |
---|
107 | /* kernel loader */ |
---|
108 | struct xc_dom_arch *arch_hooks; |
---|
109 | }; |
---|
110 | |
---|
111 | /* --- pluggable kernel loader ------------------------------------- */ |
---|
112 | |
---|
113 | struct xc_dom_loader { |
---|
114 | char *name; |
---|
115 | int (*probe) (struct xc_dom_image * dom); |
---|
116 | int (*parser) (struct xc_dom_image * dom); |
---|
117 | int (*loader) (struct xc_dom_image * dom); |
---|
118 | |
---|
119 | struct xc_dom_loader *next; |
---|
120 | }; |
---|
121 | |
---|
122 | #define __init __attribute__ ((constructor)) |
---|
123 | void xc_dom_register_loader(struct xc_dom_loader *loader); |
---|
124 | |
---|
125 | /* --- arch specific hooks ----------------------------------------- */ |
---|
126 | |
---|
127 | struct xc_dom_arch { |
---|
128 | /* pagetable setup */ |
---|
129 | int (*alloc_magic_pages) (struct xc_dom_image * dom); |
---|
130 | int (*count_pgtables) (struct xc_dom_image * dom); |
---|
131 | int (*setup_pgtables) (struct xc_dom_image * dom); |
---|
132 | |
---|
133 | /* arch-specific data structs setup */ |
---|
134 | int (*start_info) (struct xc_dom_image * dom); |
---|
135 | int (*shared_info) (struct xc_dom_image * dom, void *shared_info); |
---|
136 | int (*vcpu) (struct xc_dom_image * dom, void *vcpu_ctxt); |
---|
137 | |
---|
138 | char *guest_type; |
---|
139 | int page_shift; |
---|
140 | int sizeof_pfn; |
---|
141 | |
---|
142 | struct xc_dom_arch *next; |
---|
143 | }; |
---|
144 | void xc_dom_register_arch_hooks(struct xc_dom_arch *hooks); |
---|
145 | |
---|
146 | #define XC_DOM_PAGE_SHIFT(dom) ((dom)->arch_hooks->page_shift) |
---|
147 | #define XC_DOM_PAGE_SIZE(dom) (1 << (dom)->arch_hooks->page_shift) |
---|
148 | |
---|
149 | /* --- main functions ---------------------------------------------- */ |
---|
150 | |
---|
151 | struct xc_dom_image *xc_dom_allocate(const char *cmdline, const char *features); |
---|
152 | void xc_dom_release_phys(struct xc_dom_image *dom); |
---|
153 | void xc_dom_release(struct xc_dom_image *dom); |
---|
154 | int xc_dom_mem_init(struct xc_dom_image *dom, unsigned int mem_mb); |
---|
155 | |
---|
156 | size_t xc_dom_check_gzip(void *blob, size_t ziplen); |
---|
157 | int xc_dom_do_gunzip(void *src, size_t srclen, void *dst, size_t dstlen); |
---|
158 | int xc_dom_try_gunzip(struct xc_dom_image *dom, void **blob, size_t * size); |
---|
159 | |
---|
160 | int xc_dom_kernel_file(struct xc_dom_image *dom, const char *filename); |
---|
161 | int xc_dom_ramdisk_file(struct xc_dom_image *dom, const char *filename); |
---|
162 | int xc_dom_kernel_mem(struct xc_dom_image *dom, const void *mem, |
---|
163 | size_t memsize); |
---|
164 | int xc_dom_ramdisk_mem(struct xc_dom_image *dom, const void *mem, |
---|
165 | size_t memsize); |
---|
166 | |
---|
167 | int xc_dom_parse_image(struct xc_dom_image *dom); |
---|
168 | int xc_dom_build_image(struct xc_dom_image *dom); |
---|
169 | int xc_dom_update_guest_p2m(struct xc_dom_image *dom); |
---|
170 | |
---|
171 | int xc_dom_boot_xen_init(struct xc_dom_image *dom, int xc, domid_t domid); |
---|
172 | int xc_dom_boot_mem_init(struct xc_dom_image *dom); |
---|
173 | void *xc_dom_boot_domU_map(struct xc_dom_image *dom, xen_pfn_t pfn, |
---|
174 | xen_pfn_t count); |
---|
175 | int xc_dom_boot_image(struct xc_dom_image *dom); |
---|
176 | int xc_dom_compat_check(struct xc_dom_image *dom); |
---|
177 | |
---|
178 | /* --- debugging bits ---------------------------------------------- */ |
---|
179 | |
---|
180 | extern FILE *xc_dom_logfile; |
---|
181 | |
---|
182 | void xc_dom_loginit(void); |
---|
183 | int xc_dom_printf(const char *fmt, ...) __attribute__ ((format(printf, 1, 2))); |
---|
184 | int xc_dom_panic_func(const char *file, int line, xc_error_code err, |
---|
185 | const char *fmt, ...) |
---|
186 | __attribute__ ((format(printf, 4, 5))); |
---|
187 | #define xc_dom_panic(err, fmt, args...) \ |
---|
188 | xc_dom_panic_func(__FILE__, __LINE__, err, fmt, ## args) |
---|
189 | #define xc_dom_trace(mark) \ |
---|
190 | xc_dom_printf("%s:%d: trace %s\n", __FILE__, __LINE__, mark) |
---|
191 | |
---|
192 | void xc_dom_log_memory_footprint(struct xc_dom_image *dom); |
---|
193 | |
---|
194 | /* --- simple memory pool ------------------------------------------ */ |
---|
195 | |
---|
196 | void *xc_dom_malloc(struct xc_dom_image *dom, size_t size); |
---|
197 | void *xc_dom_malloc_page_aligned(struct xc_dom_image *dom, size_t size); |
---|
198 | void *xc_dom_malloc_filemap(struct xc_dom_image *dom, |
---|
199 | const char *filename, size_t * size); |
---|
200 | char *xc_dom_strdup(struct xc_dom_image *dom, const char *str); |
---|
201 | |
---|
202 | /* --- alloc memory pool ------------------------------------------- */ |
---|
203 | |
---|
204 | int xc_dom_alloc_page(struct xc_dom_image *dom, char *name); |
---|
205 | int xc_dom_alloc_segment(struct xc_dom_image *dom, |
---|
206 | struct xc_dom_seg *seg, char *name, |
---|
207 | xen_vaddr_t start, xen_vaddr_t size); |
---|
208 | |
---|
209 | /* --- misc bits --------------------------------------------------- */ |
---|
210 | |
---|
211 | void *xc_dom_pfn_to_ptr(struct xc_dom_image *dom, xen_pfn_t first, |
---|
212 | xen_pfn_t count); |
---|
213 | void xc_dom_unmap_one(struct xc_dom_image *dom, xen_pfn_t pfn); |
---|
214 | void xc_dom_unmap_all(struct xc_dom_image *dom); |
---|
215 | |
---|
216 | static inline void *xc_dom_seg_to_ptr(struct xc_dom_image *dom, |
---|
217 | struct xc_dom_seg *seg) |
---|
218 | { |
---|
219 | xen_vaddr_t segsize = seg->vend - seg->vstart; |
---|
220 | unsigned int page_size = XC_DOM_PAGE_SIZE(dom); |
---|
221 | xen_pfn_t pages = (segsize + page_size - 1) / page_size; |
---|
222 | |
---|
223 | return xc_dom_pfn_to_ptr(dom, seg->pfn, pages); |
---|
224 | } |
---|
225 | |
---|
226 | static inline void *xc_dom_vaddr_to_ptr(struct xc_dom_image *dom, |
---|
227 | xen_vaddr_t vaddr) |
---|
228 | { |
---|
229 | unsigned int page_size = XC_DOM_PAGE_SIZE(dom); |
---|
230 | xen_pfn_t page = (vaddr - dom->parms.virt_base) / page_size; |
---|
231 | unsigned int offset = (vaddr - dom->parms.virt_base) % page_size; |
---|
232 | void *ptr = xc_dom_pfn_to_ptr(dom, page, 0); |
---|
233 | return (ptr ? (ptr + offset) : NULL); |
---|
234 | } |
---|
235 | |
---|
236 | static inline int xc_dom_feature_translated(struct xc_dom_image *dom) |
---|
237 | { |
---|
238 | return elf_xen_feature_get(XENFEAT_auto_translated_physmap, dom->f_active); |
---|
239 | } |
---|
240 | |
---|
241 | static inline xen_pfn_t xc_dom_p2m_host(struct xc_dom_image *dom, xen_pfn_t pfn) |
---|
242 | { |
---|
243 | if (dom->shadow_enabled) |
---|
244 | return pfn; |
---|
245 | return dom->p2m_host[pfn]; |
---|
246 | } |
---|
247 | |
---|
248 | static inline xen_pfn_t xc_dom_p2m_guest(struct xc_dom_image *dom, |
---|
249 | xen_pfn_t pfn) |
---|
250 | { |
---|
251 | if (xc_dom_feature_translated(dom)) |
---|
252 | return pfn; |
---|
253 | return dom->p2m_host[pfn]; |
---|
254 | } |
---|
255 | |
---|
256 | /* --- arch bits --------------------------------------------------- */ |
---|
257 | |
---|
258 | int arch_setup_meminit(struct xc_dom_image *dom); |
---|
259 | int arch_setup_bootearly(struct xc_dom_image *dom); |
---|
260 | int arch_setup_bootlate(struct xc_dom_image *dom); |
---|
261 | |
---|
262 | /* |
---|
263 | * Local variables: |
---|
264 | * mode: C |
---|
265 | * c-set-style: "BSD" |
---|
266 | * c-basic-offset: 4 |
---|
267 | * tab-width: 4 |
---|
268 | * indent-tabs-mode: nil |
---|
269 | * End: |
---|
270 | */ |
---|