2 * EFI application disk support
4 * Copyright (c) 2016 Alexander Graf
6 * SPDX-License-Identifier: GPL-2.0+
10 #include <efi_loader.h>
15 DECLARE_GLOBAL_DATA_PTR;
17 static const efi_guid_t efi_gop_guid = EFI_GOP_GUID;
20 /* Generic EFI object parent class data */
21 struct efi_object parent;
22 /* EFI Interface callback struct for gop */
24 /* The only mode we support */
25 struct efi_gop_mode_info info;
26 struct efi_gop_mode mode;
29 static efi_status_t EFIAPI gop_query_mode(struct efi_gop *this, u32 mode_number,
30 unsigned long *size_of_info,
31 struct efi_gop_mode_info **info)
33 struct efi_gop_obj *gopobj;
35 EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info);
37 gopobj = container_of(this, struct efi_gop_obj, ops);
38 *size_of_info = sizeof(gopobj->info);
39 *info = &gopobj->info;
41 return EFI_EXIT(EFI_SUCCESS);
44 static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)
46 EFI_ENTRY("%p, %x", this, mode_number);
49 return EFI_EXIT(EFI_INVALID_PARAMETER);
51 return EFI_EXIT(EFI_SUCCESS);
54 static efi_status_t EFIAPI gop_blt(struct efi_gop *this, void *buffer,
55 unsigned long operation, unsigned long sx,
56 unsigned long sy, unsigned long dx,
57 unsigned long dy, unsigned long width,
58 unsigned long height, unsigned long delta)
60 int i, j, line_len16, line_len32;
63 EFI_ENTRY("%p, %p, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx", this,
64 buffer, operation, sx, sy, dx, dy, width, height, delta);
66 if (operation != EFI_BLT_BUFFER_TO_VIDEO)
67 return EFI_EXIT(EFI_INVALID_PARAMETER);
69 fb = (void*)gd->fb_base;
70 line_len16 = panel_info.vl_col * sizeof(u16);
71 line_len32 = panel_info.vl_col * sizeof(u32);
73 /* Copy the contents line by line */
75 switch (panel_info.vl_bpix) {
77 for (i = 0; i < height; i++) {
78 u32 *dest = fb + ((i + dy) * line_len32) +
80 u32 *src = buffer + ((i + sy) * line_len32) +
83 /* Same color format, just memcpy */
84 memcpy(dest, src, width * sizeof(u32));
88 for (i = 0; i < height; i++) {
89 u16 *dest = fb + ((i + dy) * line_len16) +
91 u32 *src = buffer + ((i + sy) * line_len32) +
94 /* Convert from rgb888 to rgb565 */
95 for (j = 0; j < width; j++) {
97 dest[j] = ((((rgb888 >> (16 + 3)) & 0x1f) << 11) |
98 (((rgb888 >> (8 + 2)) & 0x3f) << 5) |
99 (((rgb888 >> (0 + 3)) & 0x1f) << 0));
107 return EFI_EXIT(EFI_SUCCESS);
110 /* This gets called from do_bootefi_exec(). */
111 int efi_gop_register(void)
113 struct efi_gop_obj *gopobj;
116 switch (panel_info.vl_bpix) {
121 /* So far, we only work in 16 or 32 bit mode */
125 gopobj = calloc(1, sizeof(*gopobj));
127 /* Fill in object data */
128 gopobj->parent.protocols[0].guid = &efi_gop_guid;
129 gopobj->parent.protocols[0].open = efi_return_handle;
130 gopobj->parent.handle = &gopobj->ops;
131 gopobj->ops.query_mode = gop_query_mode;
132 gopobj->ops.set_mode = gop_set_mode;
133 gopobj->ops.blt = gop_blt;
134 gopobj->ops.mode = &gopobj->mode;
136 gopobj->mode.max_mode = 1;
137 gopobj->mode.info = &gopobj->info;
138 gopobj->mode.info_size = sizeof(gopobj->info);
139 gopobj->mode.fb_base = gd->fb_base;
140 gopobj->mode.fb_size = lcd_get_size(&line_len);
142 gopobj->info.version = 0;
143 gopobj->info.width = panel_info.vl_col;
144 gopobj->info.height = panel_info.vl_row;
145 gopobj->info.pixel_format = EFI_GOT_RGBA8;
146 gopobj->info.pixels_per_scanline = panel_info.vl_col;
148 /* Hook up to the device list */
149 list_add_tail(&gopobj->parent.link, &efi_obj_list);