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| Rev 206 | Rev 208 | ||
|---|---|---|---|
| Line 106... | Line 106... | ||
| 106 | * on AMD64 it is 64-bit - 2 items in table */ |
106 | * on AMD64 it is 64-bit - 2 items in table */ |
| 107 | { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
107 | { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| 108 | { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } |
108 | { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } |
| 109 | }; |
109 | }; |
| 110 | 110 | ||
| 111 | struct ptr_16_64 gdtr = {.limit = sizeof(gdtr), .base= (__u64) &gdtr }; |
111 | struct ptr_16_64 gdtr = {.limit = sizeof(gdtr), .base= (__u64)KA2PA(&gdt) }; |
| 112 | 112 | ||
| 113 | struct idescriptor idt[IDT_ITEMS]; |
113 | struct idescriptor idt[IDT_ITEMS]; |
| 114 | 114 | ||
| 115 | static struct tss tss; |
115 | static struct tss tss; |
| - | 116 | struct tss *tss_p = NULL; |
|
| 116 | 117 | ||
| 117 | /* TODO: Does not compile correctly if it does not exist ???? */ |
118 | /* TODO: Does not compile correctly if it does not exist ???? */ |
| 118 | int __attribute__ ((section ("K_DATA_START"))) __fake; |
119 | int __attribute__ ((section ("K_DATA_START"))) __fake; |
| 119 | 120 | ||
| 120 | void gdt_tss_setbase(struct descriptor *d, __address base) |
121 | void gdt_tss_setbase(struct descriptor *d, __address base) |
| Line 214... | Line 215... | ||
| 214 | } |
215 | } |
| 215 | 216 | ||
| 216 | void pm_init(void) |
217 | void pm_init(void) |
| 217 | { |
218 | { |
| 218 | struct descriptor *gdt_p = (struct descriptor *) PA2KA(gdtr.base); |
219 | struct descriptor *gdt_p = (struct descriptor *) PA2KA(gdtr.base); |
| 219 | struct tss_descriptor *tss_d; |
220 | struct tss_descriptor *tss_desc; |
| 220 | 221 | ||
| 221 | /* |
222 | /* |
| 222 | * Each CPU has its private GDT and TSS. |
223 | * Each CPU has its private GDT and TSS. |
| 223 | * All CPUs share one IDT. |
224 | * All CPUs share one IDT. |
| 224 | */ |
225 | */ |
| Line 237... | Line 238... | ||
| 237 | panic("could not allocate TSS\n"); |
238 | panic("could not allocate TSS\n"); |
| 238 | } |
239 | } |
| 239 | 240 | ||
| 240 | tss_initialize(tss_p); |
241 | tss_initialize(tss_p); |
| 241 | 242 | ||
| 242 | tss_d = (struct tss_descriptor *) &gdt_p[TSS_DES]; |
243 | tss_desc = (struct tss_descriptor *) (&gdt_p[TSS_DES]); |
| 243 | tss_d[TSS_DES].present = 1; |
244 | tss_desc->present = 1; |
| 244 | tss_d[TSS_DES].type = AR_TSS; |
245 | tss_desc->type = AR_TSS; |
| 245 | tss_d[TSS_DES].dpl = PL_KERNEL; |
246 | tss_desc->dpl = PL_KERNEL; |
| 246 | 247 | ||
| 247 | gdt_tss_setbase(&gdt_p[TSS_DES], (__address) tss_p); |
248 | gdt_tss_setbase(&gdt_p[TSS_DES], (__address) tss_p); |
| 248 | gdt_tss_setlimit(&gdt_p[TSS_DES], sizeof(struct tss) - 1); |
249 | gdt_tss_setlimit(&gdt_p[TSS_DES], sizeof(struct tss) - 1); |
| 249 | 250 | ||
| 250 | /* |
251 | /* |