* BIOS in u-boot.
****************************************************************************/
#include <common.h>
-#include "biosemui.h"
+#include <bios_emul.h>
+#include <errno.h>
#include <malloc.h>
+#include <vbe.h>
+#include "biosemui.h"
/* Length of the BIOS image */
#define MAX_BIOSLEN (128 * 1024L)
static u32 saveBaseAddress18;
static u32 saveBaseAddress20;
+static void atibios_set_vesa_mode(RMREGS *regs, int vesa_mode,
+ struct vbe_mode_info *mode_info)
+{
+ debug("VBE: Setting VESA mode %#04x\n", vesa_mode);
+ /* request linear framebuffer mode */
+ vesa_mode |= (1 << 14);
+ /* request clearing of framebuffer */
+ vesa_mode &= ~(1 << 15);
+ regs->e.eax = VESA_SET_MODE;
+ regs->e.ebx = vesa_mode;
+ BE_int86(0x10, regs, regs);
+
+ int offset = 0x2000;
+ void *buffer = (void *)(M.mem_base + offset);
+
+ u16 buffer_seg = (((unsigned long)offset) >> 4) & 0xff00;
+ u16 buffer_adr = ((unsigned long)offset) & 0xffff;
+ regs->e.eax = VESA_GET_MODE_INFO;
+ regs->e.ebx = 0;
+ regs->e.ecx = vesa_mode;
+ regs->e.edx = 0;
+ regs->e.esi = buffer_seg;
+ regs->e.edi = buffer_adr;
+ BE_int86(0x10, regs, regs);
+ memcpy(mode_info->mode_info_block, buffer,
+ sizeof(struct vbe_mode_info));
+ mode_info->valid = true;
+
+ vesa_mode |= (1 << 14);
+ /* request clearing of framebuffer */
+ vesa_mode &= ~(1 << 15);
+ regs->e.eax = VESA_SET_MODE;
+ regs->e.ebx = vesa_mode;
+ BE_int86(0x10, regs, regs);
+}
+
/****************************************************************************
PARAMETERS:
pcidev - PCI device info for the video card on the bus to boot
-VGAInfo - BIOS emulator VGA info structure
+vga_info - BIOS emulator VGA info structure
REMARKS:
This function executes the BIOS POST code on the controller. We assume that
at this stage the controller has its I/O and memory space enabled and
that all other controllers are in a disabled state.
****************************************************************************/
-static void PCI_doBIOSPOST(pci_dev_t pcidev, BE_VGAInfo * VGAInfo)
+static void PCI_doBIOSPOST(pci_dev_t pcidev, BE_VGAInfo *vga_info,
+ int vesa_mode, struct vbe_mode_info *mode_info)
{
RMREGS regs;
RMSREGS sregs;
((int)PCI_DEV(pcidev) << 3) | (int)PCI_FUNC(pcidev);
/*Setup the X86 emulator for the VGA BIOS*/
- BE_setVGA(VGAInfo);
+ BE_setVGA(vga_info);
/*Execute the BIOS POST code*/
BE_callRealMode(0xC000, 0x0003, ®s, &sregs);
/*Cleanup and exit*/
- BE_getVGA(VGAInfo);
+ BE_getVGA(vga_info);
+
+ if (vesa_mode != -1)
+ atibios_set_vesa_mode(®s, vesa_mode, mode_info);
}
/****************************************************************************
Loads and POST's the display controllers BIOS, directly from the BIOS
image we can extract over the PCI bus.
****************************************************************************/
-static int PCI_postController(pci_dev_t pcidev, BE_VGAInfo * VGAInfo)
+static int PCI_postController(pci_dev_t pcidev, uchar *bios_rom, int bios_len,
+ BE_VGAInfo *vga_info, int vesa_mode,
+ struct vbe_mode_info *mode_info)
{
- u32 BIOSImageLen;
- uchar *mappedBIOS;
- uchar *copyOfBIOS;
-
- /*Allocate memory to store copy of BIOS from display controller*/
- if ((mappedBIOS = PCI_mapBIOSImage(pcidev)) == NULL) {
- printf("videoboot: Video ROM failed to map!\n");
- return false;
- }
+ u32 bios_image_len;
+ uchar *mapped_bios;
+ uchar *copy_of_bios;
+
+ if (bios_rom) {
+ copy_of_bios = bios_rom;
+ bios_image_len = bios_len;
+ } else {
+ /*
+ * Allocate memory to store copy of BIOS from display
+ * controller
+ */
+ mapped_bios = PCI_mapBIOSImage(pcidev);
+ if (mapped_bios == NULL) {
+ printf("videoboot: Video ROM failed to map!\n");
+ return false;
+ }
- BIOSImageLen = mappedBIOS[2] * 512;
+ bios_image_len = mapped_bios[2] * 512;
- if ((copyOfBIOS = malloc(BIOSImageLen)) == NULL) {
- printf("videoboot: Out of memory!\n");
- return false;
+ copy_of_bios = malloc(bios_image_len);
+ if (copy_of_bios == NULL) {
+ printf("videoboot: Out of memory!\n");
+ return false;
+ }
+ memcpy(copy_of_bios, mapped_bios, bios_image_len);
+ PCI_unmapBIOSImage(pcidev, mapped_bios);
}
- memcpy(copyOfBIOS, mappedBIOS, BIOSImageLen);
- PCI_unmapBIOSImage(pcidev, mappedBIOS);
-
- /*Save information in VGAInfo structure*/
- VGAInfo->function = PCI_FUNC(pcidev);
- VGAInfo->device = PCI_DEV(pcidev);
- VGAInfo->bus = PCI_BUS(pcidev);
- VGAInfo->pcidev = pcidev;
- VGAInfo->BIOSImage = copyOfBIOS;
- VGAInfo->BIOSImageLen = BIOSImageLen;
+ /*Save information in vga_info structure*/
+ vga_info->function = PCI_FUNC(pcidev);
+ vga_info->device = PCI_DEV(pcidev);
+ vga_info->bus = PCI_BUS(pcidev);
+ vga_info->pcidev = pcidev;
+ vga_info->BIOSImage = copy_of_bios;
+ vga_info->BIOSImageLen = bios_image_len;
/*Now execute the BIOS POST for the device*/
- if (copyOfBIOS[0] != 0x55 || copyOfBIOS[1] != 0xAA) {
+ if (copy_of_bios[0] != 0x55 || copy_of_bios[1] != 0xAA) {
printf("videoboot: Video ROM image is invalid!\n");
return false;
}
- PCI_doBIOSPOST(pcidev, VGAInfo);
+ PCI_doBIOSPOST(pcidev, vga_info, vesa_mode, mode_info);
/*Reset the size of the BIOS image to the final size*/
- VGAInfo->BIOSImageLen = copyOfBIOS[2] * 512;
+ vga_info->BIOSImageLen = copy_of_bios[2] * 512;
return true;
}
-/****************************************************************************
-PARAMETERS:
-pcidev - PCI device info for the video card on the bus to boot
-pVGAInfo - Place to return VGA info structure is requested
-cleanUp - true to clean up on exit, false to leave emulator active
-
-REMARKS:
-Boots the PCI/AGP video card on the bus using the Video ROM BIOS image
-and the X86 BIOS emulator module.
-****************************************************************************/
-int BootVideoCardBIOS(pci_dev_t pcidev, BE_VGAInfo ** pVGAInfo, int cleanUp)
+int biosemu_setup(pci_dev_t pcidev, BE_VGAInfo **vga_infop)
{
BE_VGAInfo *VGAInfo;
/*Initialise the x86 BIOS emulator*/
if ((VGAInfo = malloc(sizeof(*VGAInfo))) == NULL) {
printf("videoboot: Out of memory!\n");
- return false;
+ return -ENOMEM;
}
memset(VGAInfo, 0, sizeof(*VGAInfo));
BE_init(0, 65536, VGAInfo, 0);
+ *vga_infop = VGAInfo;
- /*Post all the display controller BIOS'es*/
- if (!PCI_postController(pcidev, VGAInfo))
- return false;
+ return 0;
+}
- /*Cleanup and exit the emulator if requested. If the BIOS emulator
- is needed after booting the card, we will not call BE_exit and
- leave it enabled for further use (ie: VESA driver etc).
+void biosemu_set_interrupt_handler(int intnum, int (*int_func)(void))
+{
+ X86EMU_setupIntrFunc(intnum, (X86EMU_intrFuncs)int_func);
+}
+
+int biosemu_run(pci_dev_t pcidev, uchar *bios_rom, int bios_len,
+ BE_VGAInfo *vga_info, int clean_up, int vesa_mode,
+ struct vbe_mode_info *mode_info)
+{
+ /*Post all the display controller BIOS'es*/
+ if (!PCI_postController(pcidev, bios_rom, bios_len, vga_info,
+ vesa_mode, mode_info))
+ return -EINVAL;
+
+ /*
+ * Cleanup and exit the emulator if requested. If the BIOS emulator
+ * is needed after booting the card, we will not call BE_exit and
+ * leave it enabled for further use (ie: VESA driver etc).
*/
- if (cleanUp) {
+ if (clean_up) {
BE_exit();
- if (VGAInfo->BIOSImage)
- free(VGAInfo->BIOSImage);
- free(VGAInfo);
- VGAInfo = NULL;
+ if (vga_info->BIOSImage)
+ free(vga_info->BIOSImage);
+ free(vga_info);
+ vga_info = NULL;
}
- /*Return VGA info pointer if the caller requested it*/
+
+ return 0;
+}
+
+/****************************************************************************
+PARAMETERS:
+pcidev - PCI device info for the video card on the bus to boot
+pVGAInfo - Place to return VGA info structure is requested
+cleanUp - true to clean up on exit, false to leave emulator active
+
+REMARKS:
+Boots the PCI/AGP video card on the bus using the Video ROM BIOS image
+and the X86 BIOS emulator module.
+****************************************************************************/
+int BootVideoCardBIOS(pci_dev_t pcidev, BE_VGAInfo **pVGAInfo, int clean_up)
+{
+ BE_VGAInfo *VGAInfo;
+ int ret;
+
+ ret = biosemu_setup(pcidev, &VGAInfo);
+ if (ret)
+ return false;
+ ret = biosemu_run(pcidev, NULL, 0, VGAInfo, clean_up, -1, NULL);
+ if (ret)
+ return false;
+
+ /* Return VGA info pointer if the caller requested it*/
if (pVGAInfo)
*pVGAInfo = VGAInfo;
+
return true;
}
projects / u-boot / blobdiff