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         void *fb;
  32 };
  33
  34 static efi_status_t EFIAPI gop_query_mode(struct efi_gop *this, u32 mode_number,
  35                                           unsigned long *size_of_info,
  36                                           struct efi_gop_mode_info **info)
  37 {
  38         struct efi_gop_obj *gopobj;
  39
  40         EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info);
  41
  42         gopobj = container_of(this, struct efi_gop_obj, ops);
  43         *size_of_info = sizeof(gopobj->info);
  44         *info = &gopobj->info;
  45
  46         return EFI_EXIT(EFI_SUCCESS);
  47 }
  48
  49 static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)
  50 {
  51         EFI_ENTRY("%p, %x", this, mode_number);
  52
  53         if (mode_number != 0)
  54                 return EFI_EXIT(EFI_INVALID_PARAMETER);
  55
  56         return EFI_EXIT(EFI_SUCCESS);
  57 }
  58
  59 static efi_status_t EFIAPI gop_blt(struct efi_gop *this, void *buffer,
  60                                    unsigned long operation, unsigned long sx,
  61                                    unsigned long sy, unsigned long dx,
  62                                    unsigned long dy, unsigned long width,
  63                                    unsigned long height, unsigned long delta)
  64 {
  65         struct efi_gop_obj *gopobj = container_of(this, struct efi_gop_obj, ops);
  66         int i, j, line_len16, line_len32;
  67         void *fb;
  68
  69         EFI_ENTRY("%p, %p, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx", this,
  70                   buffer, operation, sx, sy, dx, dy, width, height, delta);
  71
  72         if (operation != EFI_BLT_BUFFER_TO_VIDEO)
  73                 return EFI_EXIT(EFI_INVALID_PARAMETER);
  74
  75         fb = gopobj->fb;
  76         line_len16 = gopobj->info.width * sizeof(u16);
  77         line_len32 = gopobj->info.width * sizeof(u32);
  78
  79         /* Copy the contents line by line */
  80
  81         switch (gopobj->bpix) {
  82 #ifdef CONFIG_DM_VIDEO
  83         case VIDEO_BPP32:
  84 #else
  85         case LCD_COLOR32:
  86 #endif
  87                 for (i = 0; i < height; i++) {
  88                         u32 *dest = fb + ((i + dy)  * line_len32) +
  89                                          (dx * sizeof(u32));
  90                         u32 *src = buffer + ((i + sy)  * line_len32) +
  91                                          (sx * sizeof(u32));
  92
  93                         /* Same color format, just memcpy */
  94                         memcpy(dest, src, width * sizeof(u32));
  95                 }
  96                 break;
  97 #ifdef CONFIG_DM_VIDEO
  98         case VIDEO_BPP16:
  99 #else
 100         case LCD_COLOR16:
 101 #endif
 102                 for (i = 0; i < height; i++) {
 103                         u16 *dest = fb + ((i + dy)  * line_len16) +
 104                                          (dx * sizeof(u16));
 105                         u32 *src = buffer + ((i + sy)  * line_len32) +
 106                                          (sx * sizeof(u32));
 107
 108                         /* Convert from rgb888 to rgb565 */
 109                         for (j = 0; j < width; j++) {
 110                                 u32 rgb888 = src[j];
 111                                 dest[j] = ((((rgb888 >> (16 + 3)) & 0x1f) << 11) |
 112                                            (((rgb888 >> (8 + 2)) & 0x3f) << 5) |
 113                                            (((rgb888 >> (0 + 3)) & 0x1f) << 0));
 114                         }
 115                 }
 116                 break;
 117         }
 118
 119 #ifdef CONFIG_DM_VIDEO
 120         video_sync_all();
 121 #else
 122         lcd_sync();
 123 #endif
 124
 125         return EFI_EXIT(EFI_SUCCESS);
 126 }
 127
 128 /* This gets called from do_bootefi_exec(). */
 129 int efi_gop_register(void)
 130 {
 131         struct efi_gop_obj *gopobj;
 132         u32 bpix, col, row;
 133         u64 fb_base, fb_size;
 134         void *fb;
 135
 136 #ifdef CONFIG_DM_VIDEO
 137         struct udevice *vdev;
 138
 139         /* We only support a single video output device for now */
 140         if (uclass_first_device(UCLASS_VIDEO, &vdev))
 141                 return -1;
 142
 143         struct video_priv *priv = dev_get_uclass_priv(vdev);
 144         bpix = priv->bpix;
 145         col = video_get_xsize(vdev);
 146         row = video_get_ysize(vdev);
 147         fb_base = (uintptr_t)priv->fb;
 148         fb_size = priv->fb_size;
 149         fb = priv->fb;
 150 #else
 151         int line_len;
 152
 153         bpix = panel_info.vl_bpix;
 154         col = panel_info.vl_col;
 155         row = panel_info.vl_row;
 156         fb_base = gd->fb_base;
 157         fb_size = lcd_get_size(&line_len);
 158         fb = (void*)gd->fb_base;
 159 #endif
 160
 161         switch (bpix) {
 162 #ifdef CONFIG_DM_VIDEO
 163         case VIDEO_BPP16:
 164         case VIDEO_BPP32:
 165 #else
 166         case LCD_COLOR32:
 167         case LCD_COLOR16:
 168 #endif
 169                 break;
 170         default:
 171                 /* So far, we only work in 16 or 32 bit mode */
 172                 return -1;
 173         }
 174
 175         gopobj = calloc(1, sizeof(*gopobj));
 176
 177         /* Fill in object data */
 178         gopobj->parent.protocols[0].guid = &efi_gop_guid;
 179         gopobj->parent.protocols[0].protocol_interface = &gopobj->ops;
 180         gopobj->parent.handle = &gopobj->ops;
 181         gopobj->ops.query_mode = gop_query_mode;
 182         gopobj->ops.set_mode = gop_set_mode;
 183         gopobj->ops.blt = gop_blt;
 184         gopobj->ops.mode = &gopobj->mode;
 185
 186         gopobj->mode.max_mode = 1;
 187         gopobj->mode.info = &gopobj->info;
 188         gopobj->mode.info_size = sizeof(gopobj->info);
 189
 190 #ifdef CONFIG_DM_VIDEO
 191         if (bpix == VIDEO_BPP32) {
 192 #else
 193         if (bpix == LCD_COLOR32) {
 194 #endif
 195                 /* With 32bit color space we can directly expose the fb */
 196                 gopobj->mode.fb_base = fb_base;
 197                 gopobj->mode.fb_size = fb_size;
 198         }
 199
 200         gopobj->info.version = 0;
 201         gopobj->info.width = col;
 202         gopobj->info.height = row;
 203         gopobj->info.pixel_format = EFI_GOT_RGBA8;
 204         gopobj->info.pixels_per_scanline = col;
 205
 206         gopobj->bpix = bpix;
 207         gopobj->fb = fb;
 208
 209         /* Hook up to the device list */
 210         list_add_tail(&gopobj->parent.link, &efi_obj_list);
 211
 212         return 0;
 213 }