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![Heinrich Schuchardt](/assets/img/avatar_default.png)
Add some more files to the UEFI API documentation. Correct some Sphinx comments. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
531 lines
13 KiB
C
531 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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#include <common.h>
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#include <dm.h>
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#include <efi_loader.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_GRAPHICS_OUTPUT_PROTOCOL_GUID;
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/**
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* struct efi_gop_obj - graphical output protocol object
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*
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* @header: EFI object header
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* @ops: graphical output protocol interface
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* @info: graphical output mode information
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* @mode: graphical output mode
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* @bpix: bits per pixel
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* @fb: frame buffer
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*/
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struct efi_gop_obj {
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struct efi_object header;
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struct efi_gop ops;
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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 access 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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efi_uintn_t *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_status_t ret = EFI_SUCCESS;
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EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info);
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if (!this || !size_of_info || !info || mode_number) {
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ret = EFI_INVALID_PARAMETER;
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goto out;
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}
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gopobj = container_of(this, struct efi_gop_obj, ops);
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ret = efi_allocate_pool(EFI_BOOT_SERVICES_DATA, sizeof(gopobj->info),
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(void **)info);
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if (ret != EFI_SUCCESS)
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goto out;
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*size_of_info = sizeof(gopobj->info);
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memcpy(*info, &gopobj->info, sizeof(gopobj->info));
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out:
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return EFI_EXIT(ret);
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}
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static __always_inline struct efi_gop_pixel efi_vid16_to_blt_col(u16 vid)
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{
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struct efi_gop_pixel blt = {
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.reserved = 0,
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};
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blt.blue = (vid & 0x1f) << 3;
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vid >>= 5;
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blt.green = (vid & 0x3f) << 2;
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vid >>= 6;
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blt.red = (vid & 0x1f) << 3;
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return blt;
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}
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static __always_inline u16 efi_blt_col_to_vid16(struct efi_gop_pixel *blt)
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{
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return (u16)(blt->red >> 3) << 11 |
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(u16)(blt->green >> 2) << 5 |
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(u16)(blt->blue >> 3);
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}
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static __always_inline efi_status_t gop_blt_int(struct efi_gop *this,
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struct efi_gop_pixel *bufferp,
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u32 operation, efi_uintn_t sx,
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efi_uintn_t sy, efi_uintn_t dx,
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efi_uintn_t dy,
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efi_uintn_t width,
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efi_uintn_t height,
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efi_uintn_t delta,
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efi_uintn_t vid_bpp)
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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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efi_uintn_t i, j, linelen, slineoff = 0, dlineoff, swidth, dwidth;
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u32 *fb32 = gopobj->fb;
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u16 *fb16 = gopobj->fb;
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struct efi_gop_pixel *buffer = __builtin_assume_aligned(bufferp, 4);
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if (delta) {
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/* Check for 4 byte alignment */
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if (delta & 3)
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return EFI_INVALID_PARAMETER;
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linelen = delta >> 2;
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} else {
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linelen = width;
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}
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/* Check source rectangle */
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switch (operation) {
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case EFI_BLT_VIDEO_FILL:
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break;
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case EFI_BLT_BUFFER_TO_VIDEO:
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if (sx + width > linelen)
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return EFI_INVALID_PARAMETER;
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break;
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case EFI_BLT_VIDEO_TO_BLT_BUFFER:
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case EFI_BLT_VIDEO_TO_VIDEO:
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if (sx + width > gopobj->info.width ||
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sy + height > gopobj->info.height)
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return EFI_INVALID_PARAMETER;
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break;
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default:
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return EFI_INVALID_PARAMETER;
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}
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/* Check destination rectangle */
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switch (operation) {
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case EFI_BLT_VIDEO_FILL:
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case EFI_BLT_BUFFER_TO_VIDEO:
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case EFI_BLT_VIDEO_TO_VIDEO:
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if (dx + width > gopobj->info.width ||
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dy + height > gopobj->info.height)
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return EFI_INVALID_PARAMETER;
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break;
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case EFI_BLT_VIDEO_TO_BLT_BUFFER:
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if (dx + width > linelen)
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return EFI_INVALID_PARAMETER;
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break;
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}
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/* Calculate line width */
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switch (operation) {
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case EFI_BLT_BUFFER_TO_VIDEO:
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swidth = linelen;
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break;
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case EFI_BLT_VIDEO_TO_BLT_BUFFER:
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case EFI_BLT_VIDEO_TO_VIDEO:
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swidth = gopobj->info.width;
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if (!vid_bpp)
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return EFI_UNSUPPORTED;
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break;
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case EFI_BLT_VIDEO_FILL:
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swidth = 0;
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break;
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}
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switch (operation) {
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case EFI_BLT_BUFFER_TO_VIDEO:
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case EFI_BLT_VIDEO_FILL:
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case EFI_BLT_VIDEO_TO_VIDEO:
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dwidth = gopobj->info.width;
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if (!vid_bpp)
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return EFI_UNSUPPORTED;
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break;
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case EFI_BLT_VIDEO_TO_BLT_BUFFER:
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dwidth = linelen;
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break;
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}
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slineoff = swidth * sy;
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dlineoff = dwidth * dy;
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for (i = 0; i < height; i++) {
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for (j = 0; j < width; j++) {
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struct efi_gop_pixel pix;
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/* Read source pixel */
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switch (operation) {
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case EFI_BLT_VIDEO_FILL:
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pix = *buffer;
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break;
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case EFI_BLT_BUFFER_TO_VIDEO:
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pix = buffer[slineoff + j + sx];
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break;
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case EFI_BLT_VIDEO_TO_BLT_BUFFER:
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case EFI_BLT_VIDEO_TO_VIDEO:
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if (vid_bpp == 32)
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pix = *(struct efi_gop_pixel *)&fb32[
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slineoff + j + sx];
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else
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pix = efi_vid16_to_blt_col(fb16[
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slineoff + j + sx]);
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break;
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}
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/* Write destination pixel */
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switch (operation) {
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case EFI_BLT_VIDEO_TO_BLT_BUFFER:
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buffer[dlineoff + j + dx] = pix;
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break;
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case EFI_BLT_BUFFER_TO_VIDEO:
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case EFI_BLT_VIDEO_FILL:
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case EFI_BLT_VIDEO_TO_VIDEO:
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if (vid_bpp == 32)
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fb32[dlineoff + j + dx] = *(u32 *)&pix;
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else
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fb16[dlineoff + j + dx] =
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efi_blt_col_to_vid16(&pix);
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break;
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}
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}
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slineoff += swidth;
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dlineoff += dwidth;
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}
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return EFI_SUCCESS;
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}
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static efi_uintn_t gop_get_bpp(struct efi_gop *this)
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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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efi_uintn_t vid_bpp = 0;
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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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vid_bpp = 32;
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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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vid_bpp = 16;
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break;
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}
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return vid_bpp;
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}
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/*
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* GCC can't optimize our BLT function well, but we need to make sure that
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* our 2-dimensional loop gets executed very quickly, otherwise the system
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* will feel slow.
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*
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* By manually putting all obvious branch targets into functions which call
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* our generic BLT function with constants, the compiler can successfully
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* optimize for speed.
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*/
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static efi_status_t gop_blt_video_fill(struct efi_gop *this,
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struct efi_gop_pixel *buffer,
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u32 foo, efi_uintn_t sx,
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efi_uintn_t sy, efi_uintn_t dx,
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efi_uintn_t dy, efi_uintn_t width,
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efi_uintn_t height, efi_uintn_t delta,
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efi_uintn_t vid_bpp)
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{
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return gop_blt_int(this, buffer, EFI_BLT_VIDEO_FILL, sx, sy, dx,
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dy, width, height, delta, vid_bpp);
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}
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static efi_status_t gop_blt_buf_to_vid16(struct efi_gop *this,
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struct efi_gop_pixel *buffer,
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u32 foo, efi_uintn_t sx,
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efi_uintn_t sy, efi_uintn_t dx,
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efi_uintn_t dy, efi_uintn_t width,
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efi_uintn_t height, efi_uintn_t delta)
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{
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return gop_blt_int(this, buffer, EFI_BLT_BUFFER_TO_VIDEO, sx, sy, dx,
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dy, width, height, delta, 16);
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}
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static efi_status_t gop_blt_buf_to_vid32(struct efi_gop *this,
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struct efi_gop_pixel *buffer,
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u32 foo, efi_uintn_t sx,
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efi_uintn_t sy, efi_uintn_t dx,
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efi_uintn_t dy, efi_uintn_t width,
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efi_uintn_t height, efi_uintn_t delta)
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{
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return gop_blt_int(this, buffer, EFI_BLT_BUFFER_TO_VIDEO, sx, sy, dx,
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dy, width, height, delta, 32);
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}
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static efi_status_t gop_blt_vid_to_vid(struct efi_gop *this,
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struct efi_gop_pixel *buffer,
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u32 foo, efi_uintn_t sx,
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efi_uintn_t sy, efi_uintn_t dx,
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efi_uintn_t dy, efi_uintn_t width,
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efi_uintn_t height, efi_uintn_t delta,
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efi_uintn_t vid_bpp)
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{
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return gop_blt_int(this, buffer, EFI_BLT_VIDEO_TO_VIDEO, sx, sy, dx,
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dy, width, height, delta, vid_bpp);
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}
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static efi_status_t gop_blt_vid_to_buf(struct efi_gop *this,
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struct efi_gop_pixel *buffer,
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u32 foo, efi_uintn_t sx,
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efi_uintn_t sy, efi_uintn_t dx,
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efi_uintn_t dy, efi_uintn_t width,
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efi_uintn_t height, efi_uintn_t delta,
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efi_uintn_t vid_bpp)
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{
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return gop_blt_int(this, buffer, EFI_BLT_VIDEO_TO_BLT_BUFFER, sx, sy,
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dx, dy, width, height, delta, vid_bpp);
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}
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/**
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* gop_set_mode() - set graphical output mode
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*
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* This function implements the SetMode() service.
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*
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* See the Unified Extensible Firmware Interface (UEFI) specification for
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* details.
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*
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* @this: the graphical output protocol
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* @mode_number: the mode to be set
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* Return: status code
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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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struct efi_gop_obj *gopobj;
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struct efi_gop_pixel buffer = {0, 0, 0, 0};
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efi_uintn_t vid_bpp;
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efi_status_t ret = EFI_SUCCESS;
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EFI_ENTRY("%p, %x", this, mode_number);
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if (!this) {
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ret = EFI_INVALID_PARAMETER;
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goto out;
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}
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if (mode_number) {
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ret = EFI_UNSUPPORTED;
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goto out;
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}
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gopobj = container_of(this, struct efi_gop_obj, ops);
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vid_bpp = gop_get_bpp(this);
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ret = gop_blt_video_fill(this, &buffer, EFI_BLT_VIDEO_FILL, 0, 0, 0, 0,
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gopobj->info.width, gopobj->info.height, 0,
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vid_bpp);
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out:
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return EFI_EXIT(ret);
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}
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/*
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* Copy rectangle.
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*
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* This function implements the Blt service of the EFI_GRAPHICS_OUTPUT_PROTOCOL.
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* See the Unified Extensible Firmware Interface (UEFI) specification for
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* details.
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*
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* @this: EFI_GRAPHICS_OUTPUT_PROTOCOL
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* @buffer: pixel buffer
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* @sx: source x-coordinate
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* @sy: source y-coordinate
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* @dx: destination x-coordinate
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* @dy: destination y-coordinate
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* @width: width of rectangle
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* @height: height of rectangle
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* @delta: length in bytes of a line in the pixel buffer (optional)
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* @return: status code
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*/
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efi_status_t EFIAPI gop_blt(struct efi_gop *this, struct efi_gop_pixel *buffer,
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u32 operation, efi_uintn_t sx,
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efi_uintn_t sy, efi_uintn_t dx,
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efi_uintn_t dy, efi_uintn_t width,
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efi_uintn_t height, efi_uintn_t delta)
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{
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efi_status_t ret = EFI_INVALID_PARAMETER;
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efi_uintn_t vid_bpp;
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EFI_ENTRY("%p, %p, %u, %zu, %zu, %zu, %zu, %zu, %zu, %zu", this,
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buffer, operation, sx, sy, dx, dy, width, height, delta);
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vid_bpp = gop_get_bpp(this);
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/* Allow for compiler optimization */
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switch (operation) {
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case EFI_BLT_VIDEO_FILL:
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ret = gop_blt_video_fill(this, buffer, operation, sx, sy, dx,
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dy, width, height, delta, vid_bpp);
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break;
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case EFI_BLT_BUFFER_TO_VIDEO:
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/* This needs to be super-fast, so duplicate for 16/32bpp */
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if (vid_bpp == 32)
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ret = gop_blt_buf_to_vid32(this, buffer, operation, sx,
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sy, dx, dy, width, height,
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delta);
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else
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ret = gop_blt_buf_to_vid16(this, buffer, operation, sx,
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sy, dx, dy, width, height,
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delta);
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break;
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case EFI_BLT_VIDEO_TO_VIDEO:
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ret = gop_blt_vid_to_vid(this, buffer, operation, sx, sy, dx,
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dy, width, height, delta, vid_bpp);
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break;
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case EFI_BLT_VIDEO_TO_BLT_BUFFER:
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ret = gop_blt_vid_to_buf(this, buffer, operation, sx, sy, dx,
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dy, width, height, delta, vid_bpp);
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break;
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default:
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ret = EFI_INVALID_PARAMETER;
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}
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if (ret != EFI_SUCCESS)
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return EFI_EXIT(ret);
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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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/*
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* Install graphical output protocol.
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*
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* If no supported video device exists this is not considered as an
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* error.
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*/
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efi_status_t 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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efi_status_t ret;
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#ifdef CONFIG_DM_VIDEO
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struct udevice *vdev;
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struct video_priv *priv;
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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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debug("WARNING: No video device\n");
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return EFI_SUCCESS;
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}
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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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debug("WARNING: Unsupported video mode\n");
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return EFI_SUCCESS;
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}
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|
|
gopobj = calloc(1, sizeof(*gopobj));
|
|
if (!gopobj) {
|
|
printf("ERROR: Out of memory\n");
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
/* Hook up to the device list */
|
|
efi_add_handle(&gopobj->header);
|
|
|
|
/* Fill in object data */
|
|
ret = efi_add_protocol(&gopobj->header, &efi_gop_guid,
|
|
&gopobj->ops);
|
|
if (ret != EFI_SUCCESS) {
|
|
printf("ERROR: Failure adding GOP protocol\n");
|
|
return ret;
|
|
}
|
|
gopobj->ops.query_mode = gop_query_mode;
|
|
gopobj->ops.set_mode = gop_set_mode;
|
|
gopobj->ops.blt = gop_blt;
|
|
gopobj->ops.mode = &gopobj->mode;
|
|
|
|
gopobj->mode.max_mode = 1;
|
|
gopobj->mode.info = &gopobj->info;
|
|
gopobj->mode.info_size = sizeof(gopobj->info);
|
|
|
|
gopobj->mode.fb_base = fb_base;
|
|
gopobj->mode.fb_size = fb_size;
|
|
|
|
gopobj->info.version = 0;
|
|
gopobj->info.width = col;
|
|
gopobj->info.height = row;
|
|
#ifdef CONFIG_DM_VIDEO
|
|
if (bpix == VIDEO_BPP32)
|
|
#else
|
|
if (bpix == LCD_COLOR32)
|
|
#endif
|
|
{
|
|
gopobj->info.pixel_format = EFI_GOT_BGRA8;
|
|
} else {
|
|
gopobj->info.pixel_format = EFI_GOT_BITMASK;
|
|
gopobj->info.pixel_bitmask[0] = 0xf800; /* red */
|
|
gopobj->info.pixel_bitmask[1] = 0x07e0; /* green */
|
|
gopobj->info.pixel_bitmask[2] = 0x001f; /* blue */
|
|
}
|
|
gopobj->info.pixels_per_scanline = col;
|
|
gopobj->bpix = bpix;
|
|
gopobj->fb = fb;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|