43 lines
1.5 KiB
Diff
43 lines
1.5 KiB
Diff
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From patchwork Wed May 18 00:04:24 2016
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Content-Type: text/plain; charset="utf-8"
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MIME-Version: 1.0
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Content-Transfer-Encoding: 7bit
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Subject: [U-Boot] efi_loader: gop: Don't expose fb address
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From: Alexander Graf <agraf@suse.de>
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X-Patchwork-Id: 623328
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Message-Id: <1463529864-31027-1-git-send-email-agraf@suse.de>
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To: u-boot@lists.denx.de
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Cc: leif.lindholm@linaro.org, Ard Biesheuvel <ard.biesheuvel@linaro.org>
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Date: Wed, 18 May 2016 02:04:24 +0200
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Recently Linux is gaining support for efifb on AArch64 and that support actually
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tries to make use of the frame buffer address we expose to it via gop.
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While this wouldn't be bad in theory, in practice it means a few bad things
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1) We expose 16bit frame buffers as 32bit today
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2) Linux can't deal with overlapping non-PCI regions between efifb and
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a different frame buffer driver
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For now, let's just disable exposure of the frame buffer address. Most OSs that
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get booted will have a native driver for the GPU anyway.
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Signed-off-by: Alexander Graf <agraf@suse.de>
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---
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lib/efi_loader/efi_gop.c | 2 --
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1 file changed, 2 deletions(-)
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diff --git a/lib/efi_loader/efi_gop.c b/lib/efi_loader/efi_gop.c
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index bdd62bc..6c3115c 100644
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--- a/lib/efi_loader/efi_gop.c
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+++ b/lib/efi_loader/efi_gop.c
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@@ -136,8 +136,6 @@ int efi_gop_register(void)
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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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- gopobj->mode.fb_base = gd->fb_base;
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- gopobj->mode.fb_size = lcd_get_size(&line_len);
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gopobj->info.version = 0;
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gopobj->info.width = panel_info.vl_col;
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