From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 20 Apr 2021 10:06:38 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lYlP4-0008FH-OY for lore@lore.pengutronix.de; Tue, 20 Apr 2021 10:06:38 +0200 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lYlP3-0004HA-Jw for lore@pengutronix.de; Tue, 20 Apr 2021 10:06:38 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=fojllDRw+EGCns7pKCt81A48vgeieL/TJOZirdbW5yk=; b=HAIPB9SFyfmggnRAtRFTDXKRSi P2j1x5T6PNwkaZ1fNehibTEwe/ttHT+fnN4xhn/KhZgzxgWzH6xPBPi6HXwrGq2bII5pdUW9YOHjl H0aegW/2EViP0KRinas/AcmBJQt+hu5MawtbYwNaUZif+QZ7XgROgX/+F1pQ3GE/RRIQczQwBDz2i fZB82ykYlODWPb/1x2QnILcK65kLWxMHoznMG2mJChxp6WX/b4hl3V0GQ/sRK82zOZTcfxkeF8Ex4 WU2pVPbNJ9xCC9UHLSe22TFBJ9q5ledArI33lLfvD5M/fC8IQX1H8UZlrI5O7kgHgVNedADJZV5nN kKpUspxQ==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lYlNx-00BWxD-KO; Tue, 20 Apr 2021 08:05:29 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lYlNi-00BWuL-9o for barebox@desiato.infradead.org; Tue, 20 Apr 2021 08:05:15 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:In-Reply-To:References; bh=P9rd0x6yYm2nzDi8rpVS8o/DKeEuAk4xCmVOWaVuQH4=; b=GMHsEWXTouRlWWT8ZUb1fz4gyA dTyszFjqt0UtLh/VGT8+SZMZWdEUdzkJ7EU4rjXpXfh7kkYMAsZ9FGBbwjvOTAOS8nc/5cVXGu2FI zXNPPDV+9cn3VSbJ20CXRL1yPVkiMOJx6fuNTjdjSrD0dTkBX2NdY8kBhZ9VFDJ/H/1T0XAncvYPE HXdKfC0FmGxE2cST/xyWIzK3qfLV6vc9Dnkv/shRUKaLImuNaPh4ng/b16O63yiAiYfebfTo8C2FQ 0xYKhxmfnlDuAREFmLfPnU+SJiYTQrxTZ1Xxe6jXPD0rahbDIDMaJ01oePZGP1cPmfcL71LzynoxA t1IEVfFQ==; Received: from magratgarlick.emantor.de ([2a01:4f8:c17:c88::2]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lYlNe-00BtzG-Ct for barebox@lists.infradead.org; Tue, 20 Apr 2021 08:05:13 +0000 Received: by magratgarlick.emantor.de (Postfix, from userid 114) id 1D619116A05; Tue, 20 Apr 2021 09:57:19 +0200 (CEST) Received: from localhost (unknown [IPv6:2001:9e8:79:8c02:c0d3:dbff:fefe:ff70]) by magratgarlick.emantor.de (Postfix) with ESMTPSA id 78C851164FD; Tue, 20 Apr 2021 09:57:15 +0200 (CEST) From: Rouven Czerwinski To: barebox@lists.infradead.org Cc: Rouven Czerwinski Date: Tue, 20 Apr 2021 09:56:54 +0200 Message-Id: <20210420075700.246124-1-r.czerwinski@pengutronix.de> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210420_010510_768310_0B8F2497 X-CRM114-Status: GOOD ( 12.14 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2001:8b0:10b:1:d65d:64ff:fe57:4e05 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.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-2.6 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 1/8] of: reserve: add xn flag mem entries X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) If the OF_RESERVE_ENTRY_FLAG_XN flag is passed while creating the entry, a subsequent commit will use this information in the mmu to map the area as non-executable. Signed-off-by: Rouven Czerwinski --- arch/arm/cpu/sm.c | 2 +- arch/arm/cpu/start.c | 2 +- arch/arm/mach-layerscape/ppa.c | 2 +- common/bootm.c | 3 ++- drivers/of/fdt.c | 6 +++++- drivers/video/fb.c | 3 ++- drivers/video/simplefb-fixup.c | 2 +- fs/pstore/ram.c | 3 ++- include/of.h | 7 +++++-- 9 files changed, 20 insertions(+), 10 deletions(-) diff --git a/arch/arm/cpu/sm.c b/arch/arm/cpu/sm.c index f5a1edbd4f..ebd5f76e14 100644 --- a/arch/arm/cpu/sm.c +++ b/arch/arm/cpu/sm.c @@ -203,7 +203,7 @@ static int of_secure_monitor_fixup(struct device_node *root, void *unused) res_start = (unsigned long)_stext; res_end = (unsigned long)__bss_stop; - of_add_reserve_entry(res_start, res_end); + of_add_reserve_entry(res_start, res_end, 0); pr_debug("Reserved memory range from 0x%08lx to 0x%08lx\n", res_start, res_end); diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c index c61db66865..10ac070fe3 100644 --- a/arch/arm/cpu/start.c +++ b/arch/arm/cpu/start.c @@ -227,7 +227,7 @@ __noreturn __no_sanitize_address void barebox_non_pbl_start(unsigned long membas mem_malloc_init((void *)malloc_start, (void *)malloc_end - 1); if (IS_ENABLED(CONFIG_BOOTM_OPTEE)) - of_add_reserve_entry(endmem - OPTEE_SIZE, endmem - 1); + of_add_reserve_entry(endmem - OPTEE_SIZE, endmem - 1, OF_RESERVE_ENTRY_FLAG_XN); pr_debug("starting barebox...\n"); diff --git a/arch/arm/mach-layerscape/ppa.c b/arch/arm/mach-layerscape/ppa.c index d962fba751..6e61766e54 100644 --- a/arch/arm/mach-layerscape/ppa.c +++ b/arch/arm/mach-layerscape/ppa.c @@ -130,7 +130,7 @@ int ls1046a_ppa_init(resource_size_t ppa_start, resource_size_t ppa_size) if (ret) return ret; - of_add_reserve_entry(ppa_start, ppa_end); + of_add_reserve_entry(ppa_start, ppa_end, 0); return 0; } diff --git a/common/bootm.c b/common/bootm.c index 092116beb9..5c2ad1ad3a 100644 --- a/common/bootm.c +++ b/common/bootm.c @@ -410,7 +410,8 @@ void *bootm_get_devicetree(struct image_data *data) if (data->initrd_res) { of_add_initrd(data->of_root_node, data->initrd_res->start, data->initrd_res->end); - of_add_reserve_entry(data->initrd_res->start, data->initrd_res->end); + of_add_reserve_entry(data->initrd_res->start, + data->initrd_res->end, 0); } oftree = of_get_fixed_tree(data->of_root_node); diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index d98913e54a..6aade13fa0 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -537,7 +537,8 @@ out_free: static struct of_reserve_map of_reserve_map; -int of_add_reserve_entry(resource_size_t start, resource_size_t end) +int of_add_reserve_entry(resource_size_t start, resource_size_t end, + int flags) { int e = of_reserve_map.num_entries; @@ -548,6 +549,9 @@ int of_add_reserve_entry(resource_size_t start, resource_size_t end) of_reserve_map.end[e] = end; of_reserve_map.num_entries++; + if (flags & OF_RESERVE_ENTRY_FLAG_XN) + of_reserve_map.xn |= BIT(e); + return 0; } diff --git a/drivers/video/fb.c b/drivers/video/fb.c index 113c1419a1..8aa4a77ef3 100644 --- a/drivers/video/fb.c +++ b/drivers/video/fb.c @@ -202,7 +202,8 @@ static int fb_of_reserve_fixup(struct device_node *root, void *context) return 0; of_add_reserve_entry((unsigned long)info->screen_base, - (unsigned long)info->screen_base + info->screen_size); + (unsigned long)info->screen_base + info->screen_size, + 0); return 0; } diff --git a/drivers/video/simplefb-fixup.c b/drivers/video/simplefb-fixup.c index a2c59de364..af7554d10f 100644 --- a/drivers/video/simplefb-fixup.c +++ b/drivers/video/simplefb-fixup.c @@ -131,7 +131,7 @@ static int simplefb_create_node(struct device_node *root, return ret; of_add_reserve_entry((u32)fbi->screen_base, - (u32)fbi->screen_base + fbi->screen_size); + (u32)fbi->screen_base + fbi->screen_size, 0); return of_property_write_string(node, "status", "okay"); } diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index 958f46b0ea..e404187c83 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -639,7 +639,8 @@ static int ramoops_probe(struct device_d *dev) ramoops_ecc); globalvar_add_simple("linux.bootargs.ramoops", kernelargs); } else { - of_add_reserve_entry(cxt->phys_addr, cxt->phys_addr + mem_size); + of_add_reserve_entry(cxt->phys_addr, cxt->phys_addr + mem_size, + 0); of_register_fixup(ramoops_of_fixup, pdata); } diff --git a/include/of.h b/include/of.h index 645f429bde..7c8640a1d6 100644 --- a/include/of.h +++ b/include/of.h @@ -54,10 +54,13 @@ struct of_reserve_map { uint64_t start[OF_MAX_RESERVE_MAP]; uint64_t end[OF_MAX_RESERVE_MAP]; int num_entries; + u32 xn; }; -int of_add_reserve_entry(resource_size_t start, resource_size_t end); -struct of_reserve_map *of_get_reserve_map(void); +#define OF_RESERVE_ENTRY_FLAG_XN BIT(0) + +int of_add_reserve_entry(resource_size_t start, resource_size_t end, + int flags); void of_clean_reserve_map(void); void fdt_add_reserve_map(void *fdt); -- 2.31.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox