diff options
author | Hiago De Franco <hiago.franco@toradex.com> | 2023-10-16 16:16:37 -0300 |
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committer | Max Krummenacher <max.krummenacher@toradex.com> | 2023-11-29 17:06:09 +0100 |
commit | d3f053a9cb3b5e23922dfb8767ae043483ef33a0 (patch) | |
tree | b87b3718ef441c126fbe27e4cfb00c579a4ef8d1 /recipes-bsp/u-boot/u-boot-toradex/0001-arm-mach-imx-Makefile-Extend-u-boot-nand.imx-padding.patch | |
parent | 85d0917d23aceba64bbda5022d80de9bca08938d (diff) |
u-boot-toradex: Backport mainline patches for nand padding
This commit backports two patches submitted to the U-Boot mainline, both of
which relocate the 'nand_padding' function to the Makefile of 'mach-imx.'
The first patch introduces the 'u-boot-nand.imx' target to the Makefile,
producing a binary file with 1024 leading zeros. The second patch adds a 'dd'
command to the Makefile, appending 10k zeros to the end of the binary.
These changes will eliminate the need of the 'nand_padding' function.
Signed-off-by: Hiago De Franco <hiago.franco@toradex.com>
(cherry picked from commit 678579d8783e2d24666ca1b6af58544f67579aa0)
Diffstat (limited to 'recipes-bsp/u-boot/u-boot-toradex/0001-arm-mach-imx-Makefile-Extend-u-boot-nand.imx-padding.patch')
-rw-r--r-- | recipes-bsp/u-boot/u-boot-toradex/0001-arm-mach-imx-Makefile-Extend-u-boot-nand.imx-padding.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/recipes-bsp/u-boot/u-boot-toradex/0001-arm-mach-imx-Makefile-Extend-u-boot-nand.imx-padding.patch b/recipes-bsp/u-boot/u-boot-toradex/0001-arm-mach-imx-Makefile-Extend-u-boot-nand.imx-padding.patch new file mode 100644 index 0000000..95878a2 --- /dev/null +++ b/recipes-bsp/u-boot/u-boot-toradex/0001-arm-mach-imx-Makefile-Extend-u-boot-nand.imx-padding.patch @@ -0,0 +1,43 @@ +From 7dede4033bd0391d240914b3e54ec49a984d39b2 Mon Sep 17 00:00:00 2001 +From: Hiago De Franco <hiago.franco@toradex.com> +Date: Tue, 3 Oct 2023 18:26:54 -0300 +Subject: [PATCH] arm: mach-imx: Makefile: Extend u-boot-nand.imx padding + +Extend the padding process of u-boot-nand.imx target by adding 10k bytes +of zeros to the end of the binary using the 'dd' command. + +The existing padding method did not generate a functional binary, +as discussed in more detail in this thread [1]. Instead, we adopt the +end-padding calculation method documented in 'board/doc/colibri_imx7.rst' +as a reference, which is relevant for iMX7 with NAND storage. + +Adding 10k bytes of zeros provides an approximate value that makes the +proper padding for these NAND devices. + +[1] https://lore.kernel.org/all/CAC4tdFUqffQzRQFv5AGe_xtbFy1agr2SEpn_FzEdexhwjdryyw@mail.gmail.com/ + +Upstream-Status: Backport [7dede4033bd0391d240914b3e54ec49a984d39b2] +Signed-off-by: Hiago De Franco <hiago.franco@toradex.com> +Reviewed-by: Fabio Estevam <festevam@gmail.com> +--- + arch/arm/mach-imx/Makefile | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile +index aebfa6517b..6904cf3880 100644 +--- a/arch/arm/mach-imx/Makefile ++++ b/arch/arm/mach-imx/Makefile +@@ -142,7 +142,9 @@ u-boot.imx: u-boot.bin u-boot.cfgout $(PLUGIN).bin FORCE + $(call if_changed,mkimage) + + quiet_cmd_u-boot-nand_imx = GEN $@ +-cmd_u-boot-nand_imx = (dd bs=1024 count=1 if=/dev/zero 2>/dev/null) | cat - $< > $@ ++cmd_u-boot-nand_imx = (dd bs=1024 count=1 if=/dev/zero 2>/dev/null) | cat - $< > $@.zero-padded ; \ ++ (dd bs=10k count=1 if=/dev/zero 2>/dev/null) | cat $@.zero-padded - > $@ ; \ ++ rm -f $@.zero-padded + + u-boot-nand.imx: u-boot.imx FORCE + $(call if_changed,u-boot-nand_imx) +-- +2.42.0 + |