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1.1 root 1: // Hooks for via vgabios calls into main bios.
2: //
3: // Copyright (C) 2008 Kevin O'Connor <[email protected]>
4: //
5: // This file may be distributed under the terms of the GNU LGPLv3 license.
6:
7: #include "bregs.h" // set_code_invalid
8: #include "biosvar.h" // GET_GLOBAL
9: #include "pci.h" // pci_find_device
10: #include "pci_regs.h" // PCI_VENDOR_ID
11: #include "pci_ids.h" // PCI_VENDOR_ID_VIA
12: #include "util.h" // handle_155f
13: #include "config.h" // CONFIG_*
14:
1.1.1.5 ! root 15: #define VH_VIA 1
! 16: #define VH_INTEL 2
! 17:
! 18: int VGAHookHandlerType VAR16VISIBLE;
1.1.1.3 root 19:
1.1 root 20: static void
21: handle_155fXX(struct bregs *regs)
22: {
23: set_code_unimplemented(regs, RET_EUNSUPPORTED);
24: }
25:
26:
27: /****************************************************************
28: * Via hooks
29: ****************************************************************/
30:
1.1.1.5 ! root 31: int ViaFBsize VAR16VISIBLE, ViaRamSpeed VAR16VISIBLE;
! 32:
1.1 root 33: static void
34: via_155f01(struct bregs *regs)
35: {
36: regs->eax = 0x5f;
37: regs->cl = 2; // panel type = 2 = 1024 * 768
38: set_success(regs);
39: dprintf(1, "Warning: VGA panel type is hardcoded\n");
40: }
41:
42: static void
43: via_155f02(struct bregs *regs)
44: {
45: regs->eax = 0x5f;
46: regs->bx = 2;
47: regs->cx = 0x401; // PAL + crt only
48: regs->dx = 0; // TV Layout - default
49: set_success(regs);
50: dprintf(1, "Warning: VGA TV/CRT output type is hardcoded\n");
51: }
52:
1.1.1.5 ! root 53: static void
! 54: via_155f18(struct bregs *regs)
! 55: {
! 56: int fbsize = GET_GLOBAL(ViaFBsize), ramspeed = GET_GLOBAL(ViaRamSpeed);
! 57: if (fbsize < 0 || ramspeed < 0) {
! 58: set_code_invalid(regs, RET_EUNSUPPORTED);
! 59: return;
! 60: }
! 61: regs->eax = 0x5f;
! 62: regs->ebx = 0x500 | (ramspeed << 4) | fbsize;
! 63: regs->ecx = 0x060;
! 64: set_success(regs);
! 65: }
! 66:
! 67: static void
! 68: via_155f19(struct bregs *regs)
! 69: {
! 70: set_invalid_silent(regs);
! 71: }
! 72:
! 73: static void
! 74: via_155f(struct bregs *regs)
! 75: {
! 76: switch (regs->al) {
! 77: case 0x01: via_155f01(regs); break;
! 78: case 0x02: via_155f02(regs); break;
! 79: case 0x18: via_155f18(regs); break;
! 80: case 0x19: via_155f19(regs); break;
! 81: default: handle_155fXX(regs); break;
! 82: }
! 83: }
! 84:
1.1 root 85: static int
1.1.1.5 ! root 86: getFBSize(struct pci_device *pci)
1.1 root 87: {
88: /* FB config */
1.1.1.5 ! root 89: u8 reg = pci_config_readb(pci->bdf, 0xa1);
1.1 root 90:
91: /* GFX disabled ? */
92: if (!(reg & 0x80))
93: return -1;
94:
1.1.1.5 ! root 95: static u8 mem_power[] = {0, 3, 4, 5, 6, 7, 8, 9};
! 96: return mem_power[(reg >> 4) & 0x7];
1.1 root 97: }
98:
99: static int
1.1.1.5 ! root 100: getViaRamSpeed(struct pci_device *pci)
1.1 root 101: {
1.1.1.5 ! root 102: return (pci_config_readb(pci->bdf, 0x90) & 0x07) + 3;
1.1 root 103: }
104:
105: static int
1.1.1.2 root 106: getAMDRamSpeed(void)
1.1 root 107: {
1.1.1.5 ! root 108: struct pci_device *pci = pci_find_device(PCI_VENDOR_ID_AMD
! 109: , PCI_DEVICE_ID_AMD_K8_NB_MEMCTL);
! 110: if (!pci)
1.1 root 111: return -1;
112:
113: /* mem clk 0 = DDR2 400 */
1.1.1.5 ! root 114: return (pci_config_readb(pci->bdf, 0x94) & 0x7) + 6;
1.1 root 115: }
116:
117: /* int 0x15 - 5f18
118:
119: ECX = unknown/dont care
120: EBX[3..0] Frame Buffer Size 2^N MiB
121: EBX[7..4] Memory speed:
122: 0: SDR 66Mhz
123: 1: SDR 100Mhz
124: 2: SDR 133Mhz
125: 3: DDR 100Mhz (PC1600 or DDR200)
126: 4: DDR 133Mhz (PC2100 or DDR266)
127: 5: DDR 166Mhz (PC2700 or DDR333)
128: 6: DDR 200Mhz (PC3200 or DDR400)
129: 7: DDR2 133Mhz (DDR2 533)
130: 8: DDR2 166Mhz (DDR2 667)
131: 9: DDR2 200Mhz (DDR2 800)
132: A: DDR2 233Mhz (DDR2 1066)
133: B: and above: Unknown
134: EBX[?..8] Total memory size?
135: EAX = 0x5f for success
136: */
137:
138: #define PCI_DEVICE_ID_VIA_K8M890CE_3 0x3336
139: #define PCI_DEVICE_ID_VIA_VX855_MEMCTRL 0x3409
140:
141: static void
1.1.1.5 ! root 142: via_setup(struct pci_device *pci)
1.1 root 143: {
1.1.1.5 ! root 144: VGAHookHandlerType = VH_VIA;
1.1 root 145:
1.1.1.5 ! root 146: struct pci_device *d = pci_find_device(PCI_VENDOR_ID_VIA
! 147: , PCI_DEVICE_ID_VIA_K8M890CE_3);
! 148: if (d) {
! 149: ViaFBsize = getFBSize(d);
! 150: ViaRamSpeed = getAMDRamSpeed();
! 151: return;
1.1 root 152: }
1.1.1.5 ! root 153: d = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX855_MEMCTRL);
! 154: if (d) {
! 155: ViaFBsize = getFBSize(d);
! 156: ViaRamSpeed = getViaRamSpeed(d);
! 157: return;
1.1 root 158: }
159:
160: dprintf(1, "Warning: VGA memory size and speed is hardcoded\n");
1.1.1.5 ! root 161: ViaFBsize = 5; // 32M frame buffer
! 162: ViaRamSpeed = 4; // MCLK = DDR266
1.1 root 163: }
164:
165:
1.1.1.3 root 166: /****************************************************************
167: * Intel VGA hooks
168: ****************************************************************/
1.1.1.5 ! root 169:
! 170: u8 IntelDisplayType VAR16VISIBLE, IntelDisplayId VAR16VISIBLE;
! 171:
1.1.1.3 root 172: static void
1.1.1.5 ! root 173: intel_155f35(struct bregs *regs)
1.1.1.3 root 174: {
175: regs->ax = 0x005f;
1.1.1.5 ! root 176: regs->cl = GET_GLOBAL(IntelDisplayType);
1.1.1.3 root 177: set_success(regs);
178: }
179:
180: static void
1.1.1.5 ! root 181: intel_155f40(struct bregs *regs)
1.1.1.3 root 182: {
183: regs->ax = 0x005f;
1.1.1.5 ! root 184: regs->cl = GET_GLOBAL(IntelDisplayId);
1.1.1.3 root 185: set_success(regs);
186: }
187:
188: static void
1.1.1.5 ! root 189: intel_155f(struct bregs *regs)
1.1.1.3 root 190: {
191: switch (regs->al) {
1.1.1.5 ! root 192: case 0x35: intel_155f35(regs); break;
! 193: case 0x40: intel_155f40(regs); break;
1.1.1.3 root 194: default: handle_155fXX(regs); break;
195: }
196: }
197:
1.1.1.5 ! root 198: #define BOOT_DISPLAY_DEFAULT (0)
! 199: #define BOOT_DISPLAY_CRT (1 << 0)
! 200: #define BOOT_DISPLAY_TV (1 << 1)
! 201: #define BOOT_DISPLAY_EFP (1 << 2)
! 202: #define BOOT_DISPLAY_LCD (1 << 3)
! 203: #define BOOT_DISPLAY_CRT2 (1 << 4)
! 204: #define BOOT_DISPLAY_TV2 (1 << 5)
! 205: #define BOOT_DISPLAY_EFP2 (1 << 6)
! 206: #define BOOT_DISPLAY_LCD2 (1 << 7)
1.1.1.3 root 207:
208: static void
1.1.1.5 ! root 209: roda_setup(struct pci_device *pci)
1.1.1.3 root 210: {
1.1.1.5 ! root 211: VGAHookHandlerType = VH_INTEL;
! 212: // IntelDisplayType = BOOT_DISPLAY_DEFAULT;
! 213: IntelDisplayType = BOOT_DISPLAY_LCD;
! 214: // IntelDisplayId = inb(0x60f) & 0x0f; // Correct according to Crete
! 215: IntelDisplayId = 3; // Correct according to empirical studies
1.1.1.3 root 216: }
217:
218: static void
1.1.1.5 ! root 219: kontron_setup(struct pci_device *pci)
1.1.1.3 root 220: {
1.1.1.5 ! root 221: VGAHookHandlerType = VH_INTEL;
! 222: IntelDisplayType = BOOT_DISPLAY_CRT;
! 223: IntelDisplayId = 3;
1.1.1.3 root 224: }
225:
226: static void
1.1.1.5 ! root 227: getac_setup(struct pci_device *pci)
1.1.1.3 root 228: {
229: }
1.1 root 230:
1.1.1.5 ! root 231:
1.1 root 232: /****************************************************************
233: * Entry and setup
234: ****************************************************************/
235:
236: // Main 16bit entry point
237: void
238: handle_155f(struct bregs *regs)
239: {
1.1.1.5 ! root 240: if (!CONFIG_VGAHOOKS) {
! 241: handle_155fXX(regs);
! 242: return;
1.1 root 243: }
244:
1.1.1.5 ! root 245: int htype = GET_GLOBAL(VGAHookHandlerType);
! 246: switch (htype) {
! 247: case VH_VIA: via_155f(regs); break;
! 248: case VH_INTEL: intel_155f(regs); break;
! 249: default: handle_155fXX(regs); break;
! 250: }
1.1 root 251: }
252:
253: // Setup
254: void
1.1.1.5 ! root 255: vgahook_setup(struct pci_device *pci)
1.1 root 256: {
1.1.1.5 ! root 257: if (!CONFIG_VGAHOOKS || !CBvendor || !CBpart)
1.1 root 258: return;
1.1.1.3 root 259:
1.1.1.5 ! root 260: if (strcmp(CBvendor, "KONTRON") == 0 && strcmp(CBpart, "986LCD-M") == 0)
! 261: kontron_setup(pci);
! 262: else if (strcmp(CBvendor, "GETAC") == 0 && strcmp(CBpart, "P470") == 0)
! 263: getac_setup(pci);
! 264: else if (strcmp(CBvendor, "RODA") == 0 && strcmp(CBpart, "RK886EX") == 0)
! 265: roda_setup(pci);
! 266: else if (pci->vendor == PCI_VENDOR_ID_VIA)
! 267: via_setup(pci);
1.1 root 268: }
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