Hi all,

Duplication message again in hope to find solution.

Regards,

Bohdan Hunko

Cypress Semiconductor Ukraine

Engineer

CSUKR CSS ICW SW FW

Mobile: +38099 50 19 714
Bohdan.Hunko@infineon.com

From: Bohdan.Hunko--- via TF-M <tf-m@lists.trustedfirmware.org>
Sent: 26 May 2023 19:26
To: tf-m@lists.trustedfirmware.org
Cc: Mazurak Roman (CSUKR CSS ICW SW FW 3) <Roman.Mazurak@infineon.com>; Kytsun Hennadiy (CSUKR CSS ICW SW FW 3) <Hennadiy.Kytsun@infineon.com>; Brand Chris (CSCA CSS ICW SW PSW 1) <Chris.Brand@infineon.com>
Subject: [TF-M] Using bitwise or (|) / and (&) in Clang scatter file

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For our platform we use some ,across which should set/clear bit 28 of an address (see code below). We do this for convenience reasons.

#define IFX_S_ADDRESS_ALIAS(x) ((x) | 0x10000000)

#define IFX_NS_ADDRESS_ALIAS(x) ((x) & ~0x10000000)

Those macros are used in declaration of S_CODE_START macro. When expended in linker script (tfm_isolation_l3.o), the declaration of LR_CODE section looks as follows:

LR_CODE (0x24000000 | 0x10000000) (0x4B000) {

This code results in following error:

tfm_isolation_l3.o", line 46 (column 21): Error: L6292E: Ignoring unknown attribute '|' specified for region LR_CODE.

I tried experimenting with this and found out that when | is changed to or (see following code) then linker works fine:

LR_CODE (0x24000000 or 0x10000000) (0x4B000) {

Same problem is present when using bitwise and (&). But when using bitwise NOT (~0x…) everything works fine.