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-rw-r--r--0006-efifb-Copy-the-ACPI-BGRT-boot-graphics-to-the-frameb.patch201
1 files changed, 0 insertions, 201 deletions
diff --git a/0006-efifb-Copy-the-ACPI-BGRT-boot-graphics-to-the-frameb.patch b/0006-efifb-Copy-the-ACPI-BGRT-boot-graphics-to-the-frameb.patch
deleted file mode 100644
index 248b34335..000000000
--- a/0006-efifb-Copy-the-ACPI-BGRT-boot-graphics-to-the-frameb.patch
+++ /dev/null
@@ -1,201 +0,0 @@
-From a5f742d7ba70c702bcf67dd1fd8d5dde3f5042fc Mon Sep 17 00:00:00 2001
-From: Hans de Goede <hdegoede@redhat.com>
-Date: Tue, 3 Jul 2018 17:43:10 +0200
-Subject: [PATCH 6/7] efifb: Copy the ACPI BGRT boot graphics to the
- framebuffer
-
-On systems where fbcon is configured for deferred console takeover, the
-intend is for the framebuffer to show the boot graphics (e.g a vendor
-logo) until some message (e.g. an error) is printed or a graphical
-session takes over.
-
-Some firmware relies on the OS to show the boot graphics.
-
-This patch adds support to efifb to show the boot graphics and
-automatically enables this when fbcon is configured for deferred
-console takeover.
-
-Signed-off-by: Hans de Goede <hdegoede@redhat.com>
-Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
----
- drivers/video/fbdev/efifb.c | 140 ++++++++++++++++++++++++++++++++++++
- 1 file changed, 140 insertions(+)
-
-diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
-index c6f78d27947b..67684412ba8a 100644
---- a/drivers/video/fbdev/efifb.c
-+++ b/drivers/video/fbdev/efifb.c
-@@ -9,16 +9,39 @@
-
- #include <linux/kernel.h>
- #include <linux/efi.h>
-+#include <linux/efi-bgrt.h>
- #include <linux/errno.h>
- #include <linux/fb.h>
- #include <linux/pci.h>
- #include <linux/platform_device.h>
-+#include <linux/printk.h>
- #include <linux/screen_info.h>
- #include <video/vga.h>
- #include <asm/efi.h>
- #include <drm/drm_utils.h> /* For drm_get_panel_orientation_quirk */
- #include <drm/drm_connector.h> /* For DRM_MODE_PANEL_ORIENTATION_* */
-
-+struct bmp_file_header {
-+ u16 id;
-+ u32 file_size;
-+ u32 reserved;
-+ u32 bitmap_offset;
-+} __packed;
-+
-+struct bmp_dib_header {
-+ u32 dib_header_size;
-+ s32 width;
-+ s32 height;
-+ u16 planes;
-+ u16 bpp;
-+ u32 compression;
-+ u32 bitmap_size;
-+ u32 horz_resolution;
-+ u32 vert_resolution;
-+ u32 colors_used;
-+ u32 colors_important;
-+} __packed;
-+
- static bool request_mem_succeeded = false;
- static u64 mem_flags = EFI_MEMORY_WC | EFI_MEMORY_UC;
-
-@@ -66,6 +89,121 @@ static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green,
- return 0;
- }
-
-+/*
-+ * If fbcon deffered console takeover is configured, the intent is for the
-+ * framebuffer to show the boot graphics (e.g. vendor logo) until there is some
-+ * (error) message to display. But the boot graphics may have been destroyed by
-+ * e.g. option ROM output, detect this and restore the boot graphics.
-+ */
-+#if defined CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER && \
-+ defined CONFIG_ACPI_BGRT
-+static void efifb_copy_bmp(u8 *src, u32 *dst, int width, struct screen_info *si)
-+{
-+ u8 r, g, b;
-+
-+ while (width--) {
-+ b = *src++;
-+ g = *src++;
-+ r = *src++;
-+ *dst++ = (r << si->red_pos) |
-+ (g << si->green_pos) |
-+ (b << si->blue_pos);
-+ }
-+}
-+
-+static void efifb_show_boot_graphics(struct fb_info *info)
-+{
-+ u32 bmp_width, bmp_height, bmp_pitch, screen_pitch, dst_x, y, src_y;
-+ struct screen_info *si = &screen_info;
-+ struct bmp_file_header *file_header;
-+ struct bmp_dib_header *dib_header;
-+ void *bgrt_image = NULL;
-+ u8 *dst = info->screen_base;
-+
-+ if (!bgrt_tab.image_address) {
-+ pr_info("efifb: No BGRT, not showing boot graphics\n");
-+ return;
-+ }
-+
-+ /* Avoid flashing the logo if we're going to print std probe messages */
-+ if (console_loglevel > CONSOLE_LOGLEVEL_QUIET)
-+ return;
-+
-+ /* bgrt_tab.status is unreliable, so we don't check it */
-+
-+ if (si->lfb_depth != 32) {
-+ pr_info("efifb: not 32 bits, not showing boot graphics\n");
-+ return;
-+ }
-+
-+ bgrt_image = memremap(bgrt_tab.image_address, bgrt_image_size,
-+ MEMREMAP_WB);
-+ if (!bgrt_image) {
-+ pr_warn("efifb: Ignoring BGRT: failed to map image memory\n");
-+ return;
-+ }
-+
-+ if (bgrt_image_size < (sizeof(*file_header) + sizeof(*dib_header)))
-+ goto error;
-+
-+ file_header = bgrt_image;
-+ if (file_header->id != 0x4d42 || file_header->reserved != 0)
-+ goto error;
-+
-+ dib_header = bgrt_image + sizeof(*file_header);
-+ if (dib_header->dib_header_size != 40 || dib_header->width < 0 ||
-+ dib_header->planes != 1 || dib_header->bpp != 24 ||
-+ dib_header->compression != 0)
-+ goto error;
-+
-+ bmp_width = dib_header->width;
-+ bmp_height = abs(dib_header->height);
-+ bmp_pitch = round_up(3 * bmp_width, 4);
-+ screen_pitch = si->lfb_linelength;
-+
-+ if ((file_header->bitmap_offset + bmp_pitch * bmp_height) >
-+ bgrt_image_size)
-+ goto error;
-+
-+ if ((bgrt_tab.image_offset_x + bmp_width) > si->lfb_width ||
-+ (bgrt_tab.image_offset_y + bmp_height) > si->lfb_height)
-+ goto error;
-+
-+ pr_info("efifb: showing boot graphics\n");
-+
-+ for (y = 0; y < si->lfb_height; y++, dst += si->lfb_linelength) {
-+ /* Only background? */
-+ if (y < bgrt_tab.image_offset_y ||
-+ y >= (bgrt_tab.image_offset_y + bmp_height)) {
-+ memset(dst, 0, 4 * si->lfb_width);
-+ continue;
-+ }
-+
-+ src_y = y - bgrt_tab.image_offset_y;
-+ /* Positive header height means upside down row order */
-+ if (dib_header->height > 0)
-+ src_y = (bmp_height - 1) - src_y;
-+
-+ memset(dst, 0, bgrt_tab.image_offset_x * 4);
-+ dst_x = bgrt_tab.image_offset_x;
-+ efifb_copy_bmp(bgrt_image + file_header->bitmap_offset +
-+ src_y * bmp_pitch,
-+ (u32 *)dst + dst_x, bmp_width, si);
-+ dst_x += bmp_width;
-+ memset((u32 *)dst + dst_x, 0, (si->lfb_width - dst_x) * 4);
-+ }
-+
-+ memunmap(bgrt_image);
-+ return;
-+
-+error:
-+ memunmap(bgrt_image);
-+ pr_warn("efifb: Ignoring BGRT: unexpected or invalid BMP data\n");
-+}
-+#else
-+static inline void efifb_show_boot_graphics(struct fb_info *info) {}
-+#endif
-+
- static void efifb_destroy(struct fb_info *info)
- {
- if (info->screen_base) {
-@@ -311,6 +449,8 @@ static int efifb_probe(struct platform_device *dev)
- goto err_release_fb;
- }
-
-+ efifb_show_boot_graphics(info);
-+
- pr_info("efifb: framebuffer at 0x%lx, using %dk, total %dk\n",
- efifb_fix.smem_start, size_remap/1024, size_total/1024);
- pr_info("efifb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
---
-2.18.0
-
generated by cgit (git 2.34.1) at 2024-11-15 20:20:40 +0000