From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 14 Jan 2026 13:36:03 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vg06V-001EZ2-1a for lore@lore.pengutronix.de; Wed, 14 Jan 2026 13:36:03 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vg06T-0005ZS-0r for lore@pengutronix.de; Wed, 14 Jan 2026 13:36:02 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:To:In-Reply-To: References:Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version: Subject:Date:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=S72lHo0vDsRwj5tJkkGCWkKMDher46VcS3gsj6me55Y=; b=DeD0yDoh+lgzXmxCm9XZiJDSto DDzmMcoTOqRNR/yk+4s4cChjRPLqqBQvIdDjV2Nd+3BhSwnueEuePbbRnc7GExFeHfme/0bdHa8UJ G7GlTyi6QfWOfSiCK3W0fHZEGZQHWJQOVMQr9YrZY8uagQCd3spMzp0fvI7NYehlQG9yYYLmOoKvZ Vr0PtXxUo2+2d7zLI2VVbtYcJrWfn7WlSKTQJeSY38bGNSagu4NQ8h234TaJWsB9KL8llqdIRIwUh yVfX5Ca6ewAismpWKS/K591EdMtmQ8vNQlMR6y6vSVFPPmH/GuTFTB+VwyLpK62GPVSJMyWGyvBMx a8GEIm1A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vg05u-00000009C3N-10ff; Wed, 14 Jan 2026 12:35:26 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vg05m-00000009BvX-3kD9 for barebox@lists.infradead.org; Wed, 14 Jan 2026 12:35:23 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vg05l-00051I-Fl; Wed, 14 Jan 2026 13:35:17 +0100 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) 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 1vg05l-000afW-36; Wed, 14 Jan 2026 13:35:17 +0100 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1vfzlc-00000000TKs-18LF; Wed, 14 Jan 2026 13:14:28 +0100 From: Sascha Hauer Date: Wed, 14 Jan 2026 13:14:40 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260114-pbl-load-elf-v4-15-0afa78d95a7e@pengutronix.de> References: <20260114-pbl-load-elf-v4-0-0afa78d95a7e@pengutronix.de> In-Reply-To: <20260114-pbl-load-elf-v4-0-0afa78d95a7e@pengutronix.de> To: BAREBOX X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1768392868; l=4659; i=s.hauer@pengutronix.de; s=20230412; h=from:subject:message-id; bh=Z2HWa7EVVn66PpINn0L30Q4US+vhgCG5kKsEVqFIPew=; b=lXYbhRp8TF9Qaew09k5pINcduUBWWNJfC3vwRQbxmAIh5LgRk97wD5D77RplPHZ1vuzT3XCut KY4ZAQqOGKyClOJ7kSQJQpRFTxjXRtkxJNN8gGOTv9wnk83zFkM1Ktn X-Developer-Key: i=s.hauer@pengutronix.de; a=ed25519; pk=4kuc9ocmECiBJKWxYgqyhtZOHj5AWi7+d0n/UjhkwTg= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260114_043520_166995_7F345484 X-CRM114-Status: UNSURE ( 9.82 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Claude Sonnet 4.5" Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.9 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v4 15/22] ARM: linker script: create separate PT_LOAD segments for text, rodata, and data X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) Fix the linker scripts to generate three distinct PT_LOAD segments with correct permissions instead of combining .rodata with .data. Before this fix, the linker auto-generated only two PT_LOAD segments: 1. Text segment (PF_R|PF_X) 2. Data segment (PF_R|PF_W) - containing .rodata, .data, .bss, etc. With explicit PHDRS directives, we now generate three segments: 1. text segment (PF_R|PF_X): .text and related code sections 2. rodata segment (PF_R): .rodata and unwind tables 3. data segment (PF_R|PF_W): .data, .bss, and related sections With this we can setup the MMU properly from outside the ELF binary. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 Signed-off-by: Sascha Hauer --- arch/arm/lib32/barebox.lds.S | 35 +++++++++++++++++++++++------------ arch/arm/lib64/barebox.lds.S | 31 ++++++++++++++++++++----------- 2 files changed, 43 insertions(+), 23 deletions(-) diff --git a/arch/arm/lib32/barebox.lds.S b/arch/arm/lib32/barebox.lds.S index c704dd6d70f3ab157ceb67dfb14760e03f2a5d62..c09899361599dfc8d50b38e35b68c08f48ea9913 100644 --- a/arch/arm/lib32/barebox.lds.S +++ b/arch/arm/lib32/barebox.lds.S @@ -7,14 +7,23 @@ OUTPUT_FORMAT(BAREBOX_OUTPUT_FORMAT) OUTPUT_ARCH(BAREBOX_OUTPUT_ARCH) ENTRY(start) + +PHDRS +{ + text PT_LOAD FLAGS(5); /* PF_R | PF_X */ + rodata PT_LOAD FLAGS(4); /* PF_R */ + dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ + data PT_LOAD FLAGS(6); /* PF_R | PF_W */ +} + SECTIONS { . = 0x0; - .image_start : { *(.__image_start) } + .image_start : { *(.__image_start) } :text . = ALIGN(4); - ._text : { *(._text) } + ._text : { *(._text) } :text .text : { _stext = .; @@ -27,7 +36,7 @@ SECTIONS KEEP(*(.text_exceptions*)) __exceptions_stop = .; *(.text*) - } + } :text BAREBOX_BARE_INIT_SIZE . = ALIGN(4096); @@ -35,7 +44,7 @@ SECTIONS .rodata : { *(.rodata*) RO_DATA_SECTION - } + } :rodata #ifdef CONFIG_ARM_UNWIND /* @@ -46,20 +55,22 @@ SECTIONS __start_unwind_idx = .; *(.ARM.exidx*) __stop_unwind_idx = .; - } + } :rodata .ARM.unwind_tab : { __start_unwind_tab = .; *(.ARM.extab*) __stop_unwind_tab = .; - } + } :rodata #endif + .dynamic : { *(.dynamic) } :rodata :dynamic + . = ALIGN(4096); + __end_rodata = .; _etext = .; _sdata = .; - . = ALIGN(4); - .data : { *(.data*) } + .data : { *(.data*) } :data . = .; @@ -69,12 +80,12 @@ SECTIONS BAREBOX_EFI_RUNTIME - .image_end : { *(.__image_end) } + .image_end : { *(.__image_end) } :data . = ALIGN(4); - .__bss_start : { *(.__bss_start) } - .bss : { *(.bss*) } - .__bss_stop : { *(.__bss_stop) } + .__bss_start : { *(.__bss_start) } :data + .bss : { *(.bss*) } :data + .__bss_stop : { *(.__bss_stop) } :data #ifdef CONFIG_ARM_SECURE_MONITOR . = ALIGN(16); diff --git a/arch/arm/lib64/barebox.lds.S b/arch/arm/lib64/barebox.lds.S index 5ee5fbc3741e1f7644c00f9b37c0903c27704a3e..1ce2c67df03068e5328a41b394aa1bcbbe63c027 100644 --- a/arch/arm/lib64/barebox.lds.S +++ b/arch/arm/lib64/barebox.lds.S @@ -6,14 +6,23 @@ OUTPUT_FORMAT(BAREBOX_OUTPUT_FORMAT) OUTPUT_ARCH(BAREBOX_OUTPUT_ARCH) ENTRY(start) + +PHDRS +{ + text PT_LOAD FLAGS(5); /* PF_R | PF_X */ + rodata PT_LOAD FLAGS(4); /* PF_R */ + dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ + data PT_LOAD FLAGS(6); /* PF_R | PF_W */ +} + SECTIONS { . = 0x0; - .image_start : { *(.__image_start) } + .image_start : { *(.__image_start) } :text . = ALIGN(4); - ._text : { *(._text) } + ._text : { *(._text) } :text .text : { _stext = .; @@ -22,7 +31,7 @@ SECTIONS *(.text_bare_init*) __bare_init_end = .; *(.text*) - } + } :text BAREBOX_BARE_INIT_SIZE . = ALIGN(4096); @@ -30,7 +39,9 @@ SECTIONS .rodata : { *(.rodata*) RO_DATA_SECTION - } + } :rodata + + .dynamic : { *(.dynamic) } :rodata :dynamic . = ALIGN(4096); @@ -38,20 +49,18 @@ SECTIONS _etext = .; _sdata = .; - .data : { *(.data*) } - - BAREBOX_RELOCATION_TABLE + .data : { *(.data*) } :data _edata = .; BAREBOX_EFI_RUNTIME - .image_end : { *(.__image_end) } + .image_end : { *(.__image_end) } :data . = ALIGN(4); - .__bss_start : { *(.__bss_start) } - .bss : { *(.bss*) } - .__bss_stop : { *(.__bss_stop) } + .__bss_start : { *(.__bss_start) } :data + .bss : { *(.bss*) } :data + .__bss_stop : { *(.__bss_stop) } :data _end = .; _barebox_image_size = __bss_start; } -- 2.47.3