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59 lines
2.1 KiB
Diff
59 lines
2.1 KiB
Diff
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From b13487a97b51a619b4e681a6091a1da9d6733058 Mon Sep 17 00:00:00 2001
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From: Jason Liu <jason.hui.liu@nxp.com>
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Date: Fri, 10 Jan 2020 11:38:05 +0800
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Subject: [PATCH] LF-789-1 Revert "scripts: Makefile: Enable creation of
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_symbols_ DT node for overlays"
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This reverts commit 432071b7a106060fa4e451e10249cef021af0b7c.
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commit: 432071b7a106 scripts: Makefile: Enable creation of _symbols_ DT node for overlays
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changes the common Makefile and force creation of __symbols__ node on all platforms.
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This is not good and not acceptible under some cases due to this change will increase
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the final DTB size a lot and bring big impact for others who does not need creation
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of _symbols_ DT node for overlays.For example, on i.MX OP-TEE, the maxsize of DT is 1MB,
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this patch will break some of the i.MX6/i.MX7 boards to boot with OP-TEE enabled.
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BTW, community has the similar patch but rejected. The following post discuss about this:
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https://lore.kernel.org/patchwork/patch/821645/
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For specifc plaform/board which need the creation of _symbols_ DT node for overlays, user can
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define DTC_FLAGS_target either trough dtc build command line(#1) or with board specific Makefile(#2)
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For example:#1
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make DTC_FLAGS_fsl-ls1028a-qds=-@ freescale/fsl-ls1028a-qds.dtb
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For example:#2
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In arch/arm64/boot/dts/freescale/Makefile,
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@@ -1,4 +1,7 @@
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# SPDX-License-Identifier: GPL-2.0
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+# required for overlay support
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+#DTC_FLAGS_fsl-ls1028a-qds := -@
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+
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Signed-off-by: Jason Liu <jason.hui.liu@nxp.com>
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Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
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Reviewed-by: Alex Marginean <alexandru.marginean@nxp.com>
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Tested-by: Alex Marginean <alexandru.marginean@nxp.com>
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[fix commit message]
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Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
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---
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scripts/Makefile.lib | 3 ---
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1 file changed, 3 deletions(-)
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--- a/scripts/Makefile.lib
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+++ b/scripts/Makefile.lib
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@@ -255,9 +255,6 @@ endif
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DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
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-# Enable creation of _symbols_ node for DT overlays
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-DTC_FLAGS += -@
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-
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# Generate an assembly file to wrap the output of the device tree compiler
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quiet_cmd_dt_S_dtb= DTB $@
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cmd_dt_S_dtb= \
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