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Wed, 30 Apr 2025 23:27:19 +0200 Received: from dude04.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::ac]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uAExa-000Uar-0P; Wed, 30 Apr 2025 23:27:18 +0200 Received: from localhost ([::1] helo=dude04.red.stw.pengutronix.de) by dude04.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1uAExa-008b7w-0F; Wed, 30 Apr 2025 23:27:18 +0200 From: Michael Grzeschik Date: Wed, 30 Apr 2025 23:27:17 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250430-imx9optee-v1-1-3fcb0facfed8@pengutronix.de> X-B4-Tracking: v=1; b=H4sIALSVEmgC/x2NSwqAMAwFryJZW6itCnoVcdFPqgGt0qoI4t0NL ucxj3kgYyLM0BcPJLwo0xYZqrIAN5s4oSDPDEqqRtZaClrvbtsPRKErr3xwnWptAPatyShsMtH N/IjnsvC4Jwx0/4FhfN8Pp5kcrnAAAAA= To: barebox@lists.infradead.org X-Mailer: b4 0.12.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1143; i=m.grzeschik@pengutronix.de; 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The ELE can not reach the memory between (0xE0000000-0xFFFFFFFF). So we limit the usable memory in case OPTEE is used. Signed-off-by: Michael Grzeschik --- arch/arm/mach-imx/esdctl.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/mach-imx/esdctl.c b/arch/arm/mach-imx/esdctl.c index 701ca0ac1f3..79f697d6288 100644 --- a/arch/arm/mach-imx/esdctl.c +++ b/arch/arm/mach-imx/esdctl.c @@ -589,6 +589,15 @@ resource_size_t imx9_ddrc_sdram_size(void) mem += memory_sdram_size(cols, rows, banks, width); } + /* In MX93 the ELE is limited to comunicate with messages + * under 1.5GB address space. This limits the overal memory + * to be 1GB in case OPTEE is used. + */ + if (IS_ENABLED(CONFIG_PBL_OPTEE)) { + if (mem > 0x40000000) + mem = 0x40000000; + } + return mem; } --- base-commit: 873b572763d38ab4100d218d0a3614f79b596077 change-id: 20250430-imx9optee-31d2dfc926bf Best regards, -- Michael Grzeschik