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https://github.com/brain-hackers/u-boot-brain
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![Rob Clark](/assets/img/avatar_default.png)
uclass_first_device() returns 0 if there is no device, but error if there is a device that failed to probe. Signed-off-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
214 lines
4.9 KiB
C
214 lines
4.9 KiB
C
/*
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* EFI application disk support
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*
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* Copyright (c) 2016 Alexander Graf
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <efi_loader.h>
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#include <inttypes.h>
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#include <lcd.h>
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#include <malloc.h>
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#include <video.h>
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DECLARE_GLOBAL_DATA_PTR;
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static const efi_guid_t efi_gop_guid = EFI_GOP_GUID;
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struct efi_gop_obj {
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/* Generic EFI object parent class data */
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struct efi_object parent;
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/* EFI Interface callback struct for gop */
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struct efi_gop ops;
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/* The only mode we support */
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struct efi_gop_mode_info info;
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struct efi_gop_mode mode;
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/* Fields we only have acces to during init */
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u32 bpix;
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void *fb;
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};
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static efi_status_t EFIAPI gop_query_mode(struct efi_gop *this, u32 mode_number,
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unsigned long *size_of_info,
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struct efi_gop_mode_info **info)
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{
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struct efi_gop_obj *gopobj;
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EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info);
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gopobj = container_of(this, struct efi_gop_obj, ops);
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*size_of_info = sizeof(gopobj->info);
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*info = &gopobj->info;
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)
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{
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EFI_ENTRY("%p, %x", this, mode_number);
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if (mode_number != 0)
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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return EFI_EXIT(EFI_SUCCESS);
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}
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static efi_status_t EFIAPI gop_blt(struct efi_gop *this, void *buffer,
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unsigned long operation, unsigned long sx,
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unsigned long sy, unsigned long dx,
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unsigned long dy, unsigned long width,
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unsigned long height, unsigned long delta)
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{
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struct efi_gop_obj *gopobj = container_of(this, struct efi_gop_obj, ops);
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int i, j, line_len16, line_len32;
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void *fb;
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EFI_ENTRY("%p, %p, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx", this,
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buffer, operation, sx, sy, dx, dy, width, height, delta);
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if (operation != EFI_BLT_BUFFER_TO_VIDEO)
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return EFI_EXIT(EFI_INVALID_PARAMETER);
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fb = gopobj->fb;
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line_len16 = gopobj->info.width * sizeof(u16);
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line_len32 = gopobj->info.width * sizeof(u32);
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/* Copy the contents line by line */
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switch (gopobj->bpix) {
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#ifdef CONFIG_DM_VIDEO
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case VIDEO_BPP32:
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#else
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case LCD_COLOR32:
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#endif
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for (i = 0; i < height; i++) {
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u32 *dest = fb + ((i + dy) * line_len32) +
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(dx * sizeof(u32));
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u32 *src = buffer + ((i + sy) * line_len32) +
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(sx * sizeof(u32));
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/* Same color format, just memcpy */
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memcpy(dest, src, width * sizeof(u32));
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}
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break;
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#ifdef CONFIG_DM_VIDEO
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case VIDEO_BPP16:
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#else
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case LCD_COLOR16:
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#endif
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for (i = 0; i < height; i++) {
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u16 *dest = fb + ((i + dy) * line_len16) +
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(dx * sizeof(u16));
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u32 *src = buffer + ((i + sy) * line_len32) +
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(sx * sizeof(u32));
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/* Convert from rgb888 to rgb565 */
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for (j = 0; j < width; j++) {
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u32 rgb888 = src[j];
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dest[j] = ((((rgb888 >> (16 + 3)) & 0x1f) << 11) |
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(((rgb888 >> (8 + 2)) & 0x3f) << 5) |
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(((rgb888 >> (0 + 3)) & 0x1f) << 0));
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}
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}
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break;
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}
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#ifdef CONFIG_DM_VIDEO
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video_sync_all();
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#else
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lcd_sync();
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#endif
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return EFI_EXIT(EFI_SUCCESS);
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}
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/* This gets called from do_bootefi_exec(). */
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int efi_gop_register(void)
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{
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struct efi_gop_obj *gopobj;
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u32 bpix, col, row;
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u64 fb_base, fb_size;
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void *fb;
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#ifdef CONFIG_DM_VIDEO
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struct udevice *vdev;
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/* We only support a single video output device for now */
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if (uclass_first_device(UCLASS_VIDEO, &vdev) || !vdev)
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return -1;
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struct video_priv *priv = dev_get_uclass_priv(vdev);
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bpix = priv->bpix;
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col = video_get_xsize(vdev);
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row = video_get_ysize(vdev);
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fb_base = (uintptr_t)priv->fb;
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fb_size = priv->fb_size;
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fb = priv->fb;
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#else
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int line_len;
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bpix = panel_info.vl_bpix;
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col = panel_info.vl_col;
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row = panel_info.vl_row;
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fb_base = gd->fb_base;
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fb_size = lcd_get_size(&line_len);
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fb = (void*)gd->fb_base;
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#endif
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switch (bpix) {
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#ifdef CONFIG_DM_VIDEO
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case VIDEO_BPP16:
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case VIDEO_BPP32:
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#else
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case LCD_COLOR32:
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case LCD_COLOR16:
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#endif
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break;
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default:
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/* So far, we only work in 16 or 32 bit mode */
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return -1;
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}
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gopobj = calloc(1, sizeof(*gopobj));
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/* Fill in object data */
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gopobj->parent.protocols[0].guid = &efi_gop_guid;
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gopobj->parent.protocols[0].protocol_interface = &gopobj->ops;
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gopobj->parent.handle = &gopobj->ops;
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gopobj->ops.query_mode = gop_query_mode;
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gopobj->ops.set_mode = gop_set_mode;
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gopobj->ops.blt = gop_blt;
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gopobj->ops.mode = &gopobj->mode;
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gopobj->mode.max_mode = 1;
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gopobj->mode.info = &gopobj->info;
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gopobj->mode.info_size = sizeof(gopobj->info);
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#ifdef CONFIG_DM_VIDEO
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if (bpix == VIDEO_BPP32) {
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#else
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if (bpix == LCD_COLOR32) {
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#endif
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/* With 32bit color space we can directly expose the fb */
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gopobj->mode.fb_base = fb_base;
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gopobj->mode.fb_size = fb_size;
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}
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gopobj->info.version = 0;
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gopobj->info.width = col;
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gopobj->info.height = row;
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gopobj->info.pixel_format = EFI_GOT_RGBA8;
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gopobj->info.pixels_per_scanline = col;
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gopobj->bpix = bpix;
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gopobj->fb = fb;
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/* Hook up to the device list */
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list_add_tail(&gopobj->parent.link, &efi_obj_list);
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return 0;
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}
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