1 // Hooks for via vgabios calls into main bios.
3 // Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
5 // This file may be distributed under the terms of the GNU LGPLv3 license.
7 #include "biosvar.h" // GET_GLOBAL
8 #include "bregs.h" // set_code_invalid
9 #include "config.h" // CONFIG_*
10 #include "hw/pci.h" // pci_find_device
11 #include "hw/pci_ids.h" // PCI_VENDOR_ID_VIA
12 #include "hw/pci_regs.h" // PCI_VENDOR_ID
13 #include "output.h" // dprintf
14 #include "string.h" // strcmp
15 #include "util.h" // handle_155f, handle_157f
21 int VGAHookHandlerType VARFSEG;
24 handle_155fXX(struct bregs *regs)
26 set_code_unimplemented(regs, RET_EUNSUPPORTED);
30 handle_157fXX(struct bregs *regs)
32 set_code_unimplemented(regs, RET_EUNSUPPORTED);
35 /****************************************************************
37 ****************************************************************/
39 int ViaFBsize VARFSEG, ViaRamSpeed VARFSEG;
42 via_155f01(struct bregs *regs)
45 regs->cl = 2; // panel type = 2 = 1024 * 768
47 dprintf(1, "Warning: VGA panel type is hardcoded\n");
51 via_155f02(struct bregs *regs)
55 regs->cx = 0x401; // PAL + crt only
56 regs->dx = 0; // TV Layout - default
58 dprintf(1, "Warning: VGA TV/CRT output type is hardcoded\n");
62 via_155f18(struct bregs *regs)
64 int fbsize = GET_GLOBAL(ViaFBsize), ramspeed = GET_GLOBAL(ViaRamSpeed);
65 if (fbsize < 0 || ramspeed < 0) {
66 set_code_invalid(regs, RET_EUNSUPPORTED);
70 regs->ebx = 0x500 | (ramspeed << 4) | fbsize;
76 via_155f19(struct bregs *regs)
78 set_invalid_silent(regs);
82 via_155f(struct bregs *regs)
85 case 0x01: via_155f01(regs); break;
86 case 0x02: via_155f02(regs); break;
87 case 0x18: via_155f18(regs); break;
88 case 0x19: via_155f19(regs); break;
89 default: handle_155fXX(regs); break;
94 getFBSize(struct pci_device *pci)
97 u8 reg = pci_config_readb(pci->bdf, 0xa1);
103 static u8 mem_power[] = {0, 3, 4, 5, 6, 7, 8, 9};
104 return mem_power[(reg >> 4) & 0x7];
108 getViaRamSpeed(struct pci_device *pci)
110 return (pci_config_readb(pci->bdf, 0x90) & 0x07) + 3;
116 struct pci_device *pci = pci_find_device(PCI_VENDOR_ID_AMD
117 , PCI_DEVICE_ID_AMD_K8_NB_MEMCTL);
121 /* mem clk 0 = DDR2 400 */
122 return (pci_config_readb(pci->bdf, 0x94) & 0x7) + 6;
127 ECX = unknown/don't care
128 EBX[3..0] Frame Buffer Size 2^N MiB
129 EBX[7..4] Memory speed:
133 3: DDR 100Mhz (PC1600 or DDR200)
134 4: DDR 133Mhz (PC2100 or DDR266)
135 5: DDR 166Mhz (PC2700 or DDR333)
136 6: DDR 200Mhz (PC3200 or DDR400)
137 7: DDR2 133Mhz (DDR2 533)
138 8: DDR2 166Mhz (DDR2 667)
139 9: DDR2 200Mhz (DDR2 800)
140 A: DDR2 233Mhz (DDR2 1066)
141 B: and above: Unknown
142 EBX[?..8] Total memory size?
143 EAX = 0x5f for success
146 #define PCI_DEVICE_ID_VIA_K8M890CE_3 0x3336
147 #define PCI_DEVICE_ID_VIA_VX855_MEMCTRL 0x3409
150 via_setup(struct pci_device *pci)
152 VGAHookHandlerType = VH_VIA;
154 struct pci_device *d = pci_find_device(PCI_VENDOR_ID_VIA
155 , PCI_DEVICE_ID_VIA_K8M890CE_3);
157 ViaFBsize = getFBSize(d);
158 ViaRamSpeed = getAMDRamSpeed();
161 d = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX855_MEMCTRL);
163 ViaFBsize = getFBSize(d);
164 ViaRamSpeed = getViaRamSpeed(d);
168 dprintf(1, "Warning: VGA memory size and speed is hardcoded\n");
169 ViaFBsize = 5; // 32M frame buffer
170 ViaRamSpeed = 4; // MCLK = DDR266
174 /****************************************************************
176 ****************************************************************/
178 u8 IntelDisplayType VARFSEG, IntelDisplayId VARFSEG;
181 intel_155f35(struct bregs *regs)
184 regs->cl = GET_GLOBAL(IntelDisplayType);
189 intel_155f40(struct bregs *regs)
192 regs->cl = GET_GLOBAL(IntelDisplayId);
197 intel_155f50(struct bregs *regs)
199 /* Mandatory hook on some Dell laptops */
205 intel_155f(struct bregs *regs)
208 case 0x35: intel_155f35(regs); break;
209 case 0x40: intel_155f40(regs); break;
210 case 0x50: intel_155f50(regs); break;
211 default: handle_155fXX(regs); break;
215 #define BOOT_DISPLAY_DEFAULT (0)
216 #define BOOT_DISPLAY_CRT (1 << 0)
217 #define BOOT_DISPLAY_TV (1 << 1)
218 #define BOOT_DISPLAY_EFP (1 << 2)
219 #define BOOT_DISPLAY_LCD (1 << 3)
220 #define BOOT_DISPLAY_CRT2 (1 << 4)
221 #define BOOT_DISPLAY_TV2 (1 << 5)
222 #define BOOT_DISPLAY_EFP2 (1 << 6)
223 #define BOOT_DISPLAY_LCD2 (1 << 7)
226 intel_setup(struct pci_device *pci)
228 VGAHookHandlerType = VH_INTEL;
230 IntelDisplayType = BOOT_DISPLAY_DEFAULT;
235 roda_setup(struct pci_device *pci)
237 VGAHookHandlerType = VH_INTEL;
238 // IntelDisplayType = BOOT_DISPLAY_DEFAULT;
239 IntelDisplayType = BOOT_DISPLAY_LCD;
240 // IntelDisplayId = inb(0x60f) & 0x0f; // Correct according to Crete
241 IntelDisplayId = 3; // Correct according to empirical studies
245 kontron_setup(struct pci_device *pci)
247 VGAHookHandlerType = VH_INTEL;
248 IntelDisplayType = BOOT_DISPLAY_CRT;
253 getac_setup(struct pci_device *pci)
257 /****************************************************************
258 * Silicon Motion hooks
259 ****************************************************************/
261 u8 SmiBootDisplay VARFSEG; // 1: LCD, 2: CRT, 3: Both */
264 smi_157f02(struct bregs *regs)
266 /* Boot Display Device Override */
268 regs->bl = GET_GLOBAL(SmiBootDisplay);
273 smi_157f14(struct bregs *regs)
275 /* ReduceOn support default status */
282 smi_157f(struct bregs *regs)
285 case 0x02: smi_157f02(regs); break;
286 case 0x14: smi_157f14(regs); break;
287 default: handle_157fXX(regs); break;
292 winent_mb6047_setup(struct pci_device *pci)
294 VGAHookHandlerType = VH_SMI;
295 SmiBootDisplay = 0x02;
298 /****************************************************************
300 ****************************************************************/
302 // Main 16bit entry point
304 handle_155f(struct bregs *regs)
306 if (!CONFIG_VGAHOOKS) {
311 int htype = GET_GLOBAL(VGAHookHandlerType);
313 case VH_VIA: via_155f(regs); break;
314 case VH_INTEL: intel_155f(regs); break;
315 default: handle_155fXX(regs); break;
319 // Main 16bit entry point
321 handle_157f(struct bregs *regs)
323 if (!CONFIG_VGAHOOKS) {
328 int htype = GET_GLOBAL(VGAHookHandlerType);
330 case VH_SMI: smi_157f(regs); break;
331 default: handle_157fXX(regs); break;
337 vgahook_setup(struct pci_device *pci)
339 if (!CONFIG_VGAHOOKS)
342 if (strcmp(CBvendor, "KONTRON") == 0 && strcmp(CBpart, "986LCD-M") == 0)
344 else if (strcmp(CBvendor, "GETAC") == 0 && strcmp(CBpart, "P470") == 0)
346 else if (strcmp(CBvendor, "RODA") == 0 && strcmp(CBpart, "RK886EX") == 0)
348 else if (strcmp(CBvendor, "Win Enterprise") == 0 && strcmp(CBpart, "MB6047") == 0)
349 winent_mb6047_setup(pci);
350 else if (pci->vendor == PCI_VENDOR_ID_VIA)
352 else if (pci->vendor == PCI_VENDOR_ID_INTEL)