justin/jsix_import
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[fb] Create fb driver

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Create a new framebuffer driver. Also hackily passing frame buffer size
in the list of init handles to all processes and mapping the framebuffer
into all processes. Changed bootloader passing frame buffer as a module
to its own struct.
This commit is contained in:
Justin C. Miller
2020-12-27 18:49:38 -08:00
committed by Justin C. Miller
parent e70eb5a926
commit 19cbf1ca67
15 changed files with 170 additions and 71 deletions
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80
src/boot/console.cpp
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@@ -49,9 +49,10 @@ wstrlen(const wchar_t *s)
console::console(uefi::boot_services *bs, uefi::protos::simple_text_output *out) :
m_rows(0),
m_cols(0),
m_out(out)
m_rows {0},
m_cols {0},
m_out {out},
m_fb {0, 0}
{
pick_mode(bs);
@@ -93,7 +94,7 @@ console::pick_mode(uefi::boot_services *bs)
(uefi::graphics_output_mode_info *)gfx_out_proto->mode;
uint32_t res = info->horizontal_resolution * info->vertical_resolution;
int is_fb = info->pixel_format != uefi::pixel_format::blt_only;
int pixmode = static_cast<int>(info->pixel_format);
for (uint32_t i = 0; i < modes; ++i) {
size_t size = 0;
@@ -107,17 +108,27 @@ console::pick_mode(uefi::boot_services *bs)
#endif
const uint32_t new_res = info->horizontal_resolution * info->vertical_resolution;
const int new_is_fb = info->pixel_format != uefi::pixel_format::blt_only;
int new_pixmode = static_cast<int>(info->pixel_format);
if (new_is_fb > is_fb && new_res >= res) {
if (new_pixmode <= pixmode && new_res >= res) {
best = i;
res = new_res;
pixmode = new_pixmode;
}
}
try_or_raise(
gfx_out_proto->set_mode(best),
L"Failed to set graphics mode");
if (pixmode <= static_cast<int>(uefi::pixel_format::bgr8)) {
m_fb.phys_addr = gfx_out_proto->mode->frame_buffer_base;
m_fb.size = gfx_out_proto->mode->frame_buffer_size;
m_fb.vertical = gfx_out_proto->mode->info->vertical_resolution;
m_fb.horizontal = gfx_out_proto->mode->info->horizontal_resolution;
m_fb.scanline = gfx_out_proto->mode->info->pixels_per_scanline;
m_fb.type = static_cast<kernel::args::fb_type>(pixmode);
}
}
size_t
@@ -387,61 +398,4 @@ status_line::finish()
print_status_tag();
}
/*
uefi::status
con_get_framebuffer(
EFI_BOOT_SERVICES *bootsvc,
void **buffer,
size_t *buffer_size,
uint32_t *hres,
uint32_t *vres,
uint32_t *rmask,
uint32_t *gmask,
uint32_t *bmask)
{
uefi::status status;
uefi::protos::graphics_output *gop;
status = bootsvc->LocateProtocol(&guid_gfx_out, NULL, (void **)&gop);
if (status != EFI_NOT_FOUND) {
CHECK_EFI_STATUS_OR_RETURN(status, "LocateProtocol gfx");
*buffer = (void *)gop->Mode->FrameBufferBase;
*buffer_size = gop->Mode->FrameBufferSize;
*hres = gop->Mode->Info->horizontal_resolution;
*vres = gop->Mode->Info->vertical_resolution;
switch (gop->Mode->Info->PixelFormat) {
case PixelRedGreenBlueReserved8BitPerColor:
*rmask = 0x0000ff;
*gmask = 0x00ff00;
*bmask = 0xff0000;
return EFI_SUCCESS;
case PixelBlueGreenRedReserved8BitPerColor:
*bmask = 0x0000ff;
*gmask = 0x00ff00;
*rmask = 0xff0000;
return EFI_SUCCESS;
case PixelBitMask:
*rmask = gop->Mode->Info->PixelInformation.RedMask;
*gmask = gop->Mode->Info->PixelInformation.GreenMask;
*bmask = gop->Mode->Info->PixelInformation.BlueMask;
return EFI_SUCCESS;
default:
// Not a framebuffer, fall through to zeroing out
// values below.
break;
}
}
*buffer = NULL;
*buffer_size = *hres = *vres = 0;
*rmask = *gmask = *bmask = 0;
return EFI_SUCCESS;
}
*/
} // namespace boot