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-rw-r--r--lib/efi_loader/efi_gop.c160
1 files changed, 126 insertions, 34 deletions
diff --git a/lib/efi_loader/efi_gop.c b/lib/efi_loader/efi_gop.c
index b0c3d59..26d6f02 100644
--- a/lib/efi_loader/efi_gop.c
+++ b/lib/efi_loader/efi_gop.c
@@ -77,42 +77,24 @@ static __always_inline u16 efi_blt_col_to_vid16(struct efi_gop_pixel *blt)
(u16)(blt->blue >> 3);
}
-/*
- * Copy rectangle.
- *
- * This function implements the Blt service of the EFI_GRAPHICS_OUTPUT_PROTOCOL.
- * See the Unified Extensible Firmware Interface (UEFI) specification for
- * details.
- *
- * @this: EFI_GRAPHICS_OUTPUT_PROTOCOL
- * @buffer: pixel buffer
- * @sx: source x-coordinate
- * @sy: source y-coordinate
- * @dx: destination x-coordinate
- * @dy: destination y-coordinate
- * @width: width of rectangle
- * @height: height of rectangle
- * @delta: length in bytes of a line in the pixel buffer (optional)
- * @return: status code
- */
-efi_status_t EFIAPI gop_blt(struct efi_gop *this, struct efi_gop_pixel *buffer,
- u32 operation, efi_uintn_t sx,
- efi_uintn_t sy, efi_uintn_t dx,
- efi_uintn_t dy, efi_uintn_t width,
- efi_uintn_t height, efi_uintn_t delta)
+static __always_inline efi_status_t gop_blt_int(struct efi_gop *this,
+ struct efi_gop_pixel *buffer,
+ u32 operation, efi_uintn_t sx,
+ efi_uintn_t sy, efi_uintn_t dx,
+ efi_uintn_t dy,
+ efi_uintn_t width,
+ efi_uintn_t height,
+ efi_uintn_t delta)
{
struct efi_gop_obj *gopobj = container_of(this, struct efi_gop_obj, ops);
efi_uintn_t i, j, linelen;
u32 *fb32 = gopobj->fb;
u16 *fb16 = gopobj->fb;
- EFI_ENTRY("%p, %p, %u, %zu, %zu, %zu, %zu, %zu, %zu, %zu", this,
- buffer, operation, sx, sy, dx, dy, width, height, delta);
-
if (delta) {
/* Check for 4 byte alignment */
if (delta & 3)
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
linelen = delta >> 2;
} else {
linelen = width;
@@ -124,16 +106,16 @@ efi_status_t EFIAPI gop_blt(struct efi_gop *this, struct efi_gop_pixel *buffer,
break;
case EFI_BLT_BUFFER_TO_VIDEO:
if (sx + width > linelen)
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
break;
case EFI_BLT_VIDEO_TO_BLT_BUFFER:
case EFI_BLT_VIDEO_TO_VIDEO:
if (sx + width > gopobj->info.width ||
sy + height > gopobj->info.height)
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
break;
default:
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
}
/* Check destination rectangle */
@@ -143,11 +125,11 @@ efi_status_t EFIAPI gop_blt(struct efi_gop *this, struct efi_gop_pixel *buffer,
case EFI_BLT_VIDEO_TO_VIDEO:
if (dx + width > gopobj->info.width ||
dy + height > gopobj->info.height)
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
break;
case EFI_BLT_VIDEO_TO_BLT_BUFFER:
if (dx + width > linelen)
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
break;
}
@@ -185,7 +167,7 @@ efi_status_t EFIAPI gop_blt(struct efi_gop *this, struct efi_gop_pixel *buffer,
(i + sy) + j + sx]);
break;
default:
- return EFI_EXIT(EFI_UNSUPPORTED);
+ return EFI_UNSUPPORTED;
}
break;
}
@@ -217,13 +199,123 @@ efi_status_t EFIAPI gop_blt(struct efi_gop *this, struct efi_gop_pixel *buffer,
efi_blt_col_to_vid16(&pix);
break;
default:
- return EFI_EXIT(EFI_UNSUPPORTED);
+ return EFI_UNSUPPORTED;
}
break;
}
}
}
+ return EFI_SUCCESS;
+}
+
+/*
+ * Gcc can't optimize our BLT function well, but we need to make sure that
+ * our 2-dimensional loop gets executed very quickly, otherwise the system
+ * will feel slow.
+ *
+ * By manually putting all obvious branch targets into functions which call
+ * our generic blt function with constants, the compiler can successfully
+ * optimize for speed.
+ */
+static efi_status_t gop_blt_video_fill(struct efi_gop *this,
+ struct efi_gop_pixel *buffer,
+ u32 foo, efi_uintn_t sx,
+ efi_uintn_t sy, efi_uintn_t dx,
+ efi_uintn_t dy, efi_uintn_t width,
+ efi_uintn_t height, efi_uintn_t delta)
+{
+ return gop_blt_int(this, buffer, EFI_BLT_VIDEO_FILL, sx, sy, dx,
+ dy, width, height, delta);
+}
+
+static efi_status_t gop_blt_buf_to_vid(struct efi_gop *this,
+ struct efi_gop_pixel *buffer,
+ u32 foo, efi_uintn_t sx,
+ efi_uintn_t sy, efi_uintn_t dx,
+ efi_uintn_t dy, efi_uintn_t width,
+ efi_uintn_t height, efi_uintn_t delta)
+{
+ return gop_blt_int(this, buffer, EFI_BLT_BUFFER_TO_VIDEO, sx, sy, dx,
+ dy, width, height, delta);
+}
+
+static efi_status_t gop_blt_vid_to_vid(struct efi_gop *this,
+ struct efi_gop_pixel *buffer,
+ u32 foo, efi_uintn_t sx,
+ efi_uintn_t sy, efi_uintn_t dx,
+ efi_uintn_t dy, efi_uintn_t width,
+ efi_uintn_t height, efi_uintn_t delta)
+{
+ return gop_blt_int(this, buffer, EFI_BLT_VIDEO_TO_VIDEO, sx, sy, dx,
+ dy, width, height, delta);
+}
+
+static efi_status_t gop_blt_vid_to_buf(struct efi_gop *this,
+ struct efi_gop_pixel *buffer,
+ u32 foo, efi_uintn_t sx,
+ efi_uintn_t sy, efi_uintn_t dx,
+ efi_uintn_t dy, efi_uintn_t width,
+ efi_uintn_t height, efi_uintn_t delta)
+{
+ return gop_blt_int(this, buffer, EFI_BLT_VIDEO_TO_BLT_BUFFER, sx, sy,
+ dx, dy, width, height, delta);
+}
+
+/*
+ * Copy rectangle.
+ *
+ * This function implements the Blt service of the EFI_GRAPHICS_OUTPUT_PROTOCOL.
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @this: EFI_GRAPHICS_OUTPUT_PROTOCOL
+ * @buffer: pixel buffer
+ * @sx: source x-coordinate
+ * @sy: source y-coordinate
+ * @dx: destination x-coordinate
+ * @dy: destination y-coordinate
+ * @width: width of rectangle
+ * @height: height of rectangle
+ * @delta: length in bytes of a line in the pixel buffer (optional)
+ * @return: status code
+ */
+efi_status_t EFIAPI gop_blt(struct efi_gop *this, struct efi_gop_pixel *buffer,
+ u32 operation, efi_uintn_t sx,
+ efi_uintn_t sy, efi_uintn_t dx,
+ efi_uintn_t dy, efi_uintn_t width,
+ efi_uintn_t height, efi_uintn_t delta)
+{
+ efi_status_t ret = EFI_INVALID_PARAMETER;
+
+ EFI_ENTRY("%p, %p, %u, %zu, %zu, %zu, %zu, %zu, %zu, %zu", this,
+ buffer, operation, sx, sy, dx, dy, width, height, delta);
+
+ /* Allow for compiler optimization */
+ switch (operation) {
+ case EFI_BLT_VIDEO_FILL:
+ ret = gop_blt_video_fill(this, buffer, operation, sx, sy, dx,
+ dy, width, height, delta);
+ break;
+ case EFI_BLT_BUFFER_TO_VIDEO:
+ ret = gop_blt_buf_to_vid(this, buffer, operation, sx, sy, dx,
+ dy, width, height, delta);
+ break;
+ case EFI_BLT_VIDEO_TO_VIDEO:
+ ret = gop_blt_vid_to_vid(this, buffer, operation, sx, sy, dx,
+ dy, width, height, delta);
+ break;
+ case EFI_BLT_VIDEO_TO_BLT_BUFFER:
+ ret = gop_blt_vid_to_buf(this, buffer, operation, sx, sy, dx,
+ dy, width, height, delta);
+ break;
+ default:
+ ret = EFI_UNSUPPORTED;
+ }
+
+ if (ret != EFI_SUCCESS)
+ return EFI_EXIT(ret);
+
#ifdef CONFIG_DM_VIDEO
video_sync_all();
#else
generated by cgit v1.1 at 2024-11-13 14:15:34 +0000