//
// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
//
-// This file may be distributed under the terms of the GNU GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
-#include "bregs.h" // set_code_fail
+#include "bregs.h" // set_code_invalid
#include "biosvar.h" // GET_GLOBAL
#include "pci.h" // pci_find_device
+#include "pci_regs.h" // PCI_VENDOR_ID
#include "pci_ids.h" // PCI_VENDOR_ID_VIA
#include "util.h" // handle_155f
#include "config.h" // CONFIG_*
+#define VH_VIA 1
+#define VH_INTEL 2
+
+int VGAHookHandlerType VAR16VISIBLE;
+
+static void
+handle_155fXX(struct bregs *regs)
+{
+ set_code_unimplemented(regs, RET_EUNSUPPORTED);
+}
+
+
+/****************************************************************
+ * Via hooks
+ ****************************************************************/
+
+int ViaFBsize VAR16VISIBLE, ViaRamSpeed VAR16VISIBLE;
+
static void
-handle_155f01(struct bregs *regs)
+via_155f01(struct bregs *regs)
{
regs->eax = 0x5f;
regs->cl = 2; // panel type = 2 = 1024 * 768
}
static void
-handle_155f02(struct bregs *regs)
+via_155f02(struct bregs *regs)
{
regs->eax = 0x5f;
regs->bx = 2;
dprintf(1, "Warning: VGA TV/CRT output type is hardcoded\n");
}
-static int
-getFBSize()
+static void
+via_155f18(struct bregs *regs)
+{
+ int fbsize = GET_GLOBAL(ViaFBsize), ramspeed = GET_GLOBAL(ViaRamSpeed);
+ if (fbsize < 0 || ramspeed < 0) {
+ set_code_invalid(regs, RET_EUNSUPPORTED);
+ return;
+ }
+ regs->eax = 0x5f;
+ regs->ebx = 0x500 | (ramspeed << 4) | fbsize;
+ regs->ecx = 0x060;
+ set_success(regs);
+}
+
+static void
+via_155f19(struct bregs *regs)
+{
+ set_invalid_silent(regs);
+}
+
+static void
+via_155f(struct bregs *regs)
{
- /* Find K8M890 */
- int bdf = pci_find_device(PCI_VENDOR_ID_VIA, 0x3336);
- if (bdf < 0)
- goto err;
+ switch (regs->al) {
+ case 0x01: via_155f01(regs); break;
+ case 0x02: via_155f02(regs); break;
+ case 0x18: via_155f18(regs); break;
+ case 0x19: via_155f19(regs); break;
+ default: handle_155fXX(regs); break;
+ }
+}
+static int
+getFBSize(struct pci_device *pci)
+{
/* FB config */
- u8 reg = pci_config_readb(bdf, 0xa1);
+ u8 reg = pci_config_readb(pci->bdf, 0xa1);
/* GFX disabled ? */
if (!(reg & 0x80))
- goto err;
+ return -1;
- static u8 mem_power[] VAR16 = {0, 3, 4, 5, 6, 7, 8, 9};
- return GET_GLOBAL(mem_power[(reg >> 4) & 0x7]);
-err:
- dprintf(1, "Warning: VGA memory size is hardcoded\n");
- return 5; // 32M frame buffer
+ static u8 mem_power[] = {0, 3, 4, 5, 6, 7, 8, 9};
+ return mem_power[(reg >> 4) & 0x7];
}
static int
-getRamSpeed()
+getViaRamSpeed(struct pci_device *pci)
{
- int bdf = pci_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MEMCTL);
- if (bdf < 0)
- goto err;
+ return (pci_config_readb(pci->bdf, 0x90) & 0x07) + 3;
+}
+
+static int
+getAMDRamSpeed(void)
+{
+ struct pci_device *pci = pci_find_device(PCI_VENDOR_ID_AMD
+ , PCI_DEVICE_ID_AMD_K8_NB_MEMCTL);
+ if (!pci)
+ return -1;
/* mem clk 0 = DDR2 400 */
- u8 reg = pci_config_readb(bdf, 0x94) & 0x7;
- return reg + 6;
-err:
- dprintf(1, "Warning: VGA memory clock speed is hardcoded\n");
- return 4; // MCLK = DDR266
+ return (pci_config_readb(pci->bdf, 0x94) & 0x7) + 6;
}
/* int 0x15 - 5f18
B: and above: Unknown
EBX[?..8] Total memory size?
EAX = 0x5f for success
-
- K8M890 BIOS wants only this call (Desktop NoTv)
*/
+#define PCI_DEVICE_ID_VIA_K8M890CE_3 0x3336
+#define PCI_DEVICE_ID_VIA_VX855_MEMCTRL 0x3409
+
static void
-handle_155f18(struct bregs *regs)
+via_setup(struct pci_device *pci)
{
- regs->eax = 0x5f;
- u32 ramspeed = getRamSpeed();
- u32 fbsize = getFBSize();
- regs->ebx = 0x500 | (ramspeed << 4) | fbsize;
- regs->ecx = 0x060;
+ VGAHookHandlerType = VH_VIA;
+
+ struct pci_device *d = pci_find_device(PCI_VENDOR_ID_VIA
+ , PCI_DEVICE_ID_VIA_K8M890CE_3);
+ if (d) {
+ ViaFBsize = getFBSize(d);
+ ViaRamSpeed = getAMDRamSpeed();
+ return;
+ }
+ d = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX855_MEMCTRL);
+ if (d) {
+ ViaFBsize = getFBSize(d);
+ ViaRamSpeed = getViaRamSpeed(d);
+ return;
+ }
+
+ dprintf(1, "Warning: VGA memory size and speed is hardcoded\n");
+ ViaFBsize = 5; // 32M frame buffer
+ ViaRamSpeed = 4; // MCLK = DDR266
+}
+
+
+/****************************************************************
+ * Intel VGA hooks
+ ****************************************************************/
+
+u8 IntelDisplayType VAR16VISIBLE, IntelDisplayId VAR16VISIBLE;
+
+static void
+intel_155f35(struct bregs *regs)
+{
+ regs->ax = 0x005f;
+ regs->cl = GET_GLOBAL(IntelDisplayType);
set_success(regs);
}
static void
-handle_155f19(struct bregs *regs)
+intel_155f40(struct bregs *regs)
{
- set_fail_silent(regs);
+ regs->ax = 0x005f;
+ regs->cl = GET_GLOBAL(IntelDisplayId);
+ set_success(regs);
}
static void
-handle_155fXX(struct bregs *regs)
+intel_155f50(struct bregs *regs)
+{
+ /* Mandatory hook on some Dell laptops */
+ regs->ax = 0x005f;
+ set_success(regs);
+}
+
+static void
+intel_155f(struct bregs *regs)
+{
+ switch (regs->al) {
+ case 0x35: intel_155f35(regs); break;
+ case 0x40: intel_155f40(regs); break;
+ case 0x50: intel_155f50(regs); break;
+ default: handle_155fXX(regs); break;
+ }
+}
+
+#define BOOT_DISPLAY_DEFAULT (0)
+#define BOOT_DISPLAY_CRT (1 << 0)
+#define BOOT_DISPLAY_TV (1 << 1)
+#define BOOT_DISPLAY_EFP (1 << 2)
+#define BOOT_DISPLAY_LCD (1 << 3)
+#define BOOT_DISPLAY_CRT2 (1 << 4)
+#define BOOT_DISPLAY_TV2 (1 << 5)
+#define BOOT_DISPLAY_EFP2 (1 << 6)
+#define BOOT_DISPLAY_LCD2 (1 << 7)
+
+static void
+intel_setup(struct pci_device *pci)
{
- set_code_fail(regs, RET_EUNSUPPORTED);
+ VGAHookHandlerType = VH_INTEL;
+
+ IntelDisplayType = BOOT_DISPLAY_DEFAULT;
+ IntelDisplayId = 3;
+}
+
+static void
+roda_setup(struct pci_device *pci)
+{
+ VGAHookHandlerType = VH_INTEL;
+ // IntelDisplayType = BOOT_DISPLAY_DEFAULT;
+ IntelDisplayType = BOOT_DISPLAY_LCD;
+ // IntelDisplayId = inb(0x60f) & 0x0f; // Correct according to Crete
+ IntelDisplayId = 3; // Correct according to empirical studies
+}
+
+static void
+kontron_setup(struct pci_device *pci)
+{
+ VGAHookHandlerType = VH_INTEL;
+ IntelDisplayType = BOOT_DISPLAY_CRT;
+ IntelDisplayId = 3;
}
+static void
+getac_setup(struct pci_device *pci)
+{
+}
+
+
+/****************************************************************
+ * Entry and setup
+ ****************************************************************/
+
+// Main 16bit entry point
void
handle_155f(struct bregs *regs)
{
- if (! CONFIG_VGAHOOKS) {
+ if (!CONFIG_VGAHOOKS) {
handle_155fXX(regs);
return;
}
- switch (regs->al) {
- case 0x01: handle_155f01(regs); break;
- case 0x02: handle_155f02(regs); break;
- case 0x18: handle_155f18(regs); break;
- case 0x19: handle_155f19(regs); break;
- default: handle_155fXX(regs); break;
+ int htype = GET_GLOBAL(VGAHookHandlerType);
+ switch (htype) {
+ case VH_VIA: via_155f(regs); break;
+ case VH_INTEL: intel_155f(regs); break;
+ default: handle_155fXX(regs); break;
}
}
+
+// Setup
+void
+vgahook_setup(struct pci_device *pci)
+{
+ if (!CONFIG_VGAHOOKS)
+ return;
+
+ if (strcmp(CBvendor, "KONTRON") == 0 && strcmp(CBpart, "986LCD-M") == 0)
+ kontron_setup(pci);
+ else if (strcmp(CBvendor, "GETAC") == 0 && strcmp(CBpart, "P470") == 0)
+ getac_setup(pci);
+ else if (strcmp(CBvendor, "RODA") == 0 && strcmp(CBpart, "RK886EX") == 0)
+ roda_setup(pci);
+ else if (pci->vendor == PCI_VENDOR_ID_VIA)
+ via_setup(pci);
+ else if (pci->vendor == PCI_VENDOR_ID_INTEL)
+ intel_setup(pci);
+}
projects / seabios.git / blobdiff