From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>
Date: Fri, 20 Nov 2020 14:24:25 +0100
Subject: [patch v3 4/9] ockchip: video: vop: Reserve efi fb memory
References: <20201120132421.500365403@rtp-net.org>
Message-ID: <20201120132823.799855386@rtp-net.org>
List-Id: <u-boot.lists.denx.de>
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To: u-boot@lists.denx.de

When booting with EFI and graphics, the memory used for framebuffer
has to be reserved, otherwise it may leads to kernel memory
overwrite.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Index: u-boot/drivers/video/rockchip/rk_vop.c
===================================================================
--- u-boot.orig/drivers/video/rockchip/rk_vop.c
+++ u-boot/drivers/video/rockchip/rk_vop.c
@@ -20,6 +20,8 @@
 #include <asm/arch-rockchip/vop_rk3288.h>
 #include <dm/device-internal.h>
 #include <dm/uclass-internal.h>
+#include <efi.h>
+#include <efi_loader.h>
 #include <linux/bitops.h>
 #include <linux/err.h>
 #include <power/regulator.h>
@@ -394,6 +396,13 @@ int rk_vop_probe(struct udevice *dev)
 	if (!(gd->flags & GD_FLG_RELOC))
 		return 0;
 
+	plat->base = gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size - plat->size;
+
+#if defined(CONFIG_EFI_LOADER)
+	debug("Adding to EFI map %d @ %lx\n", plat->size, plat->base);
+	efi_add_memory_map(plat->base, plat->size, EFI_RESERVED_MEMORY_TYPE);
+#endif
+
 	priv->regs = (struct rk3288_vop *)dev_read_addr(dev);
 
 	/*