From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH] ARM: i.MX8M: limit PBL size to 0x3f000
Date: Fri, 20 Oct 2023 14:17:10 +0200 [thread overview]
Message-ID: <20231020121710.658511-1-a.fatoum@pengutronix.de> (raw)
On i.MX8M(Q/M/N/P), barebox PBL is loaded 0x1000 bytes into ITCM
at address 0x7e00_1000. ITCM is 128K followed by 128K of DTCM.
Therefore, in total, barebox PBL may not exceed 0x3f000. Now that we
have a common macro for defining boards, let's add a
MAX_PBL_MEMORY_SIZE_$(entrypoint) into it, so check that we don't
exceed this size at runtime.
Boards that trip over this, should consider using get_builtin_firmware_ext
to offload binaries into barebox proper.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
images/Makefile.imx | 1 +
1 file changed, 1 insertion(+)
diff --git a/images/Makefile.imx b/images/Makefile.imx
index 50f0a64b3091..ca09853c4b6e 100644
--- a/images/Makefile.imx
+++ b/images/Makefile.imx
@@ -26,6 +26,7 @@ $(eval
ifeq ($($(strip $(1))), y)
pblb-y += $(strip $(2))
CFG_$(strip $(2)).pblb.imximg = $(board)/$(strip $(3)).imxcfg
+ MAX_PBL_MEMORY_SIZE_$(strip $(2)) = 0x3f000
FILE_barebox-$(strip $(4)).img = $(strip $(2)).pblb.pimximg
FILE_barebox-$(strip $(4))-s.img = $(strip $(2)).pblb.psimximg
image-y += barebox-$(strip $(4)).img
--
2.39.2
next reply other threads:[~2023-10-20 12:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-20 12:17 Ahmad Fatoum [this message]
2023-10-20 13:03 ` Marco Felsch
2023-10-20 13:08 ` Ahmad Fatoum
2023-10-20 13:19 ` Marco Felsch
2023-10-23 9:47 ` Sascha Hauer
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