lib/efi_loader/efi_gop.c

   1 /*
   2  *  EFI application disk support
   3  *
   4  *  Copyright (c) 2016 Alexander Graf
   5  *
   6  *  SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <dm.h>
  11 #include <efi_loader.h>
  12 #include <inttypes.h>
  13 #include <lcd.h>
  14 #include <malloc.h>
  15 #include <video.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 static const efi_guid_t efi_gop_guid = EFI_GOP_GUID;
  20
  21 struct efi_gop_obj {
  22         /* Generic EFI object parent class data */
  23         struct efi_object parent;
  24         /* EFI Interface callback struct for gop */
  25         struct efi_gop ops;
  26         /* The only mode we support */
  27         struct efi_gop_mode_info info;
  28         struct efi_gop_mode mode;
  29         /* Fields we only have acces to during init */
  30         u32 bpix;
  31 };
  32
  33 static efi_status_t EFIAPI gop_query_mode(struct efi_gop *this, u32 mode_number,
  34                                           unsigned long *size_of_info,
  35                                           struct efi_gop_mode_info **info)
  36 {
  37         struct efi_gop_obj *gopobj;
  38
  39         EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info);
  40
  41         gopobj = container_of(this, struct efi_gop_obj, ops);
  42         *size_of_info = sizeof(gopobj->info);
  43         *info = &gopobj->info;
  44
  45         return EFI_EXIT(EFI_SUCCESS);
  46 }
  47
  48 static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)
  49 {
  50         EFI_ENTRY("%p, %x", this, mode_number);
  51
  52         if (mode_number != 0)
  53                 return EFI_EXIT(EFI_INVALID_PARAMETER);
  54
  55         return EFI_EXIT(EFI_SUCCESS);
  56 }
  57
  58 static efi_status_t EFIAPI gop_blt(struct efi_gop *this, void *buffer,
  59                                    unsigned long operation, unsigned long sx,
  60                                    unsigned long sy, unsigned long dx,
  61                                    unsigned long dy, unsigned long width,
  62                                    unsigned long height, unsigned long delta)
  63 {
  64         struct efi_gop_obj *gopobj = container_of(this, struct efi_gop_obj, ops);
  65         int i, j, line_len16, line_len32;
  66         void *fb;
  67
  68         EFI_ENTRY("%p, %p, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx", this,
  69                   buffer, operation, sx, sy, dx, dy, width, height, delta);
  70
  71         if (operation != EFI_BLT_BUFFER_TO_VIDEO)
  72                 return EFI_EXIT(EFI_INVALID_PARAMETER);
  73
  74         fb = (void*)gd->fb_base;
  75         line_len16 = gopobj->info.width * sizeof(u16);
  76         line_len32 = gopobj->info.width * sizeof(u32);
  77
  78         /* Copy the contents line by line */
  79
  80         switch (gopobj->bpix) {
  81 #ifdef CONFIG_DM_VIDEO
  82         case VIDEO_BPP32:
  83 #else
  84         case LCD_COLOR32:
  85 #endif
  86                 for (i = 0; i < height; i++) {
  87                         u32 *dest = fb + ((i + dy)  * line_len32) +
  88                                          (dx * sizeof(u32));
  89                         u32 *src = buffer + ((i + sy)  * line_len32) +
  90                                          (sx * sizeof(u32));
  91
  92                         /* Same color format, just memcpy */
  93                         memcpy(dest, src, width * sizeof(u32));
  94                 }
  95                 break;
  96 #ifdef CONFIG_DM_VIDEO
  97         case VIDEO_BPP16:
  98 #else
  99         case LCD_COLOR16:
 100 #endif
 101                 for (i = 0; i < height; i++) {
 102                         u16 *dest = fb + ((i + dy)  * line_len16) +
 103                                          (dx * sizeof(u16));
 104                         u32 *src = buffer + ((i + sy)  * line_len32) +
 105                                          (sx * sizeof(u32));
 106
 107                         /* Convert from rgb888 to rgb565 */
 108                         for (j = 0; j < width; j++) {
 109                                 u32 rgb888 = src[j];
 110                                 dest[j] = ((((rgb888 >> (16 + 3)) & 0x1f) << 11) |
 111                                            (((rgb888 >> (8 + 2)) & 0x3f) << 5) |
 112                                            (((rgb888 >> (0 + 3)) & 0x1f) << 0));
 113                         }
 114                 }
 115                 break;
 116         }
 117
 118 #ifdef CONFIG_DM_VIDEO
 119         video_sync_all();
 120 #else
 121         lcd_sync();
 122 #endif
 123
 124         return EFI_EXIT(EFI_SUCCESS);
 125 }
 126
 127 /* This gets called from do_bootefi_exec(). */
 128 int efi_gop_register(void)
 129 {
 130         struct efi_gop_obj *gopobj;
 131         u32 bpix, col, row;
 132
 133 #ifdef CONFIG_DM_VIDEO
 134         struct udevice *vdev;
 135
 136         /* We only support a single video output device for now */
 137         if (uclass_first_device(UCLASS_VIDEO, &vdev))
 138                 return -1;
 139
 140         struct video_priv *priv = dev_get_uclass_priv(vdev);
 141         bpix = priv->bpix;
 142         col = video_get_xsize(vdev);
 143         row = video_get_ysize(vdev);
 144 #else
 145
 146         bpix = panel_info.vl_bpix;
 147         col = panel_info.vl_col;
 148         row = panel_info.vl_row;
 149 #endif
 150
 151         switch (bpix) {
 152 #ifdef CONFIG_DM_VIDEO
 153         case VIDEO_BPP16:
 154         case VIDEO_BPP32:
 155 #else
 156         case LCD_COLOR32:
 157         case LCD_COLOR16:
 158 #endif
 159                 break;
 160         default:
 161                 /* So far, we only work in 16 or 32 bit mode */
 162                 return -1;
 163         }
 164
 165         gopobj = calloc(1, sizeof(*gopobj));
 166
 167         /* Fill in object data */
 168         gopobj->parent.protocols[0].guid = &efi_gop_guid;
 169         gopobj->parent.protocols[0].open = efi_return_handle;
 170         gopobj->parent.handle = &gopobj->ops;
 171         gopobj->ops.query_mode = gop_query_mode;
 172         gopobj->ops.set_mode = gop_set_mode;
 173         gopobj->ops.blt = gop_blt;
 174         gopobj->ops.mode = &gopobj->mode;
 175
 176         gopobj->mode.max_mode = 1;
 177         gopobj->mode.info = &gopobj->info;
 178         gopobj->mode.info_size = sizeof(gopobj->info);
 179
 180         gopobj->info.version = 0;
 181         gopobj->info.width = col;
 182         gopobj->info.height = row;
 183         gopobj->info.pixel_format = EFI_GOT_RGBA8;
 184         gopobj->info.pixels_per_scanline = col;
 185
 186         gopobj->bpix = bpix;
 187
 188         /* Hook up to the device list */
 189         list_add_tail(&gopobj->parent.link, &efi_obj_list);
 190
 191         return 0;
 192 }