From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 14 Dec 2022 12:00:34 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1p5PV3-003YP9-EN for lore@lore.pengutronix.de; Wed, 14 Dec 2022 12:00:34 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p5PV1-0006IF-7M for lore@pengutronix.de; Wed, 14 Dec 2022 12:00:33 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ceHkk9F8+ht2ecUJhtbRhUzz6i0oMrBXMC24Kg8grBA=; b=pmOsTb3Ri4H1ObVa//NdsRxmPw J/v09dfNSJuGyGfsx6bbGeLcVMe4VRivxI4pqoWZ6XZz6CYCWJ2Qy2w+TSjQfBo4ygZZwd85uDUkE 96nL8sMjSitYJwMArXnhPYZXNTuXiuYSoCfrV713HJXK0zezcrbFN78nFDEm5m90Xz/pDgCNkXbAw 6IR7FEVvl/iMbswaVsF0gV0Edmz+rYSfDbSlZoIUEqkCttt39mfdqpZWB3tYq9DxvsktMxknwcVBc 0XyHJ2QtgweopTxxENi05ZUqtA61Jaj+m3iWbiqn+tIKmv1537mBQ84bcyz0eed9pI7Pi4yILwE98 nR1DjETQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p5PTi-00FlnP-3D; Wed, 14 Dec 2022 10:59:10 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p5PTA-00FlPj-4f for barebox@lists.infradead.org; Wed, 14 Dec 2022 10:58:41 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p5PT8-0005D3-LD; Wed, 14 Dec 2022 11:58:34 +0100 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1p5PT7-004Rul-6e; Wed, 14 Dec 2022 11:58:33 +0100 Received: from afa by dude04.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1p5PT6-003Xh2-Dt; Wed, 14 Dec 2022 11:58:32 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Wed, 14 Dec 2022 11:58:21 +0100 Message-Id: <20221214105831.844421-2-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221214105831.844421-1-a.fatoum@pengutronix.de> References: <20221214105831.844421-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221214_025836_275848_89891258 X-CRM114-Status: GOOD ( 11.05 ) 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: , 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.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 01/11] ARM: at91: sama5: switch to nonnaked entry functions 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) Functions were kept naked because they modify the stack pointer. We can hoist that up and change the board-provided entry point to be non-naked to be more robust in face of unexpected compiler optimizations. Signed-off-by: Ahmad Fatoum --- .../boards/microchip-ksz9477-evb/lowlevel.c | 6 ++---- arch/arm/boards/sama5d27-giantboard/lowlevel.c | 4 ++-- arch/arm/boards/sama5d27-som1/lowlevel.c | 4 ++-- arch/arm/boards/sama5d3_xplained/lowlevel.c | 6 ++---- arch/arm/mach-at91/include/mach/barebox-arm.h | 18 ++++++++++++++---- 5 files changed, 22 insertions(+), 16 deletions(-) diff --git a/arch/arm/boards/microchip-ksz9477-evb/lowlevel.c b/arch/arm/boards/microchip-ksz9477-evb/lowlevel.c index 93ae4819750c..6290766caa78 100644 --- a/arch/arm/boards/microchip-ksz9477-evb/lowlevel.c +++ b/arch/arm/boards/microchip-ksz9477-evb/lowlevel.c @@ -32,7 +32,7 @@ static void dbgu_init(void) putc_ll('>'); } -SAMA5_ENTRY_FUNCTION(start_sama5d3_xplained_ung8071_xload_mmc, r4) +SAMA5D3_ENTRY_FUNCTION(start_sama5d3_xplained_ung8071_xload_mmc, r4) { sama5d3_lowlevel_init(); @@ -49,12 +49,10 @@ SAMA5_ENTRY_FUNCTION(start_sama5d3_xplained_ung8071_xload_mmc, r4) extern char __dtb_z_at91_microchip_ksz9477_evb_start[]; -SAMA5_ENTRY_FUNCTION(start_sama5d3_xplained_ung8071, r4) +SAMA5D3_ENTRY_FUNCTION(start_sama5d3_xplained_ung8071, r4) { void *fdt; - arm_setup_stack(SAMA5D3_SRAM_BASE + SAMA5D3_SRAM_SIZE); - if (IS_ENABLED(CONFIG_DEBUG_LL)) dbgu_init(); diff --git a/arch/arm/boards/sama5d27-giantboard/lowlevel.c b/arch/arm/boards/sama5d27-giantboard/lowlevel.c index ee8297fa4562..fac39dd066a2 100644 --- a/arch/arm/boards/sama5d27-giantboard/lowlevel.c +++ b/arch/arm/boards/sama5d27-giantboard/lowlevel.c @@ -15,7 +15,7 @@ /* PCK = 492MHz, MCK = 164MHz */ #define MASTER_CLOCK 164000000 -SAMA5_ENTRY_FUNCTION(start_sama5d27_giantboard_xload_mmc, r4) +SAMA5D2_ENTRY_FUNCTION(start_sama5d27_giantboard_xload_mmc, r4) { void __iomem *dbgu_base; @@ -36,7 +36,7 @@ SAMA5_ENTRY_FUNCTION(start_sama5d27_giantboard_xload_mmc, r4) extern char __dtb_z_at91_sama5d27_giantboard_start[]; -SAMA5_ENTRY_FUNCTION(start_sama5d27_giantboard, r4) +SAMA5D2_ENTRY_FUNCTION(start_sama5d27_giantboard, r4) { void *fdt; diff --git a/arch/arm/boards/sama5d27-som1/lowlevel.c b/arch/arm/boards/sama5d27-som1/lowlevel.c index b0937119184b..24c08d9722b3 100644 --- a/arch/arm/boards/sama5d27-som1/lowlevel.c +++ b/arch/arm/boards/sama5d27-som1/lowlevel.c @@ -39,7 +39,7 @@ static void ek_turn_led(unsigned color) } } -SAMA5_ENTRY_FUNCTION(start_sama5d27_som1_ek_xload_mmc, r4) +SAMA5D2_ENTRY_FUNCTION(start_sama5d27_som1_ek_xload_mmc, r4) { void __iomem *dbgu_base; sama5d2_lowlevel_init(); @@ -60,7 +60,7 @@ SAMA5_ENTRY_FUNCTION(start_sama5d27_som1_ek_xload_mmc, r4) extern char __dtb_z_at91_sama5d27_som1_ek_start[]; -SAMA5_ENTRY_FUNCTION(start_sama5d27_som1_ek, r4) +SAMA5D2_ENTRY_FUNCTION(start_sama5d27_som1_ek, r4) { void *fdt; diff --git a/arch/arm/boards/sama5d3_xplained/lowlevel.c b/arch/arm/boards/sama5d3_xplained/lowlevel.c index df561af36d5e..be6b2960d40d 100644 --- a/arch/arm/boards/sama5d3_xplained/lowlevel.c +++ b/arch/arm/boards/sama5d3_xplained/lowlevel.c @@ -33,7 +33,7 @@ static void dbgu_init(void) pbl_set_putc(at91_dbgu_putc, IOMEM(AT91_BASE_DBGU1)); } -SAMA5_ENTRY_FUNCTION(start_sama5d3_xplained_xload_mmc, r4) +SAMA5D3_ENTRY_FUNCTION(start_sama5d3_xplained_xload_mmc, r4) { sama5d3_lowlevel_init(); @@ -50,12 +50,10 @@ SAMA5_ENTRY_FUNCTION(start_sama5d3_xplained_xload_mmc, r4) extern char __dtb_z_at91_sama5d3_xplained_start[]; -SAMA5_ENTRY_FUNCTION(start_sama5d3_xplained, r4) +SAMA5D3_ENTRY_FUNCTION(start_sama5d3_xplained, r4) { void *fdt; - arm_setup_stack(SAMA5D3_SRAM_BASE + SAMA5D3_SRAM_SIZE); - if (IS_ENABLED(CONFIG_DEBUG_LL)) dbgu_init(); diff --git a/arch/arm/mach-at91/include/mach/barebox-arm.h b/arch/arm/mach-at91/include/mach/barebox-arm.h index 4a65c6f8fa55..36c6abadc137 100644 --- a/arch/arm/mach-at91/include/mach/barebox-arm.h +++ b/arch/arm/mach-at91/include/mach/barebox-arm.h @@ -3,19 +3,29 @@ #define AT91_BAREBOX_ARM_H_ #include +#include +#include -#define SAMA5_ENTRY_FUNCTION(name, r4) \ +#define SAMA5_ENTRY_FUNCTION(name, stack_top, r4) \ void name (u32 r0, u32 r1, u32 r2, u32 r3); \ \ static void __##name(u32); \ \ - void NAKED __section(.text_head_entry_##name) name \ + void __naked __section(.text_head_entry_##name) name \ (u32 r0, u32 r1, u32 r2, u32 r3) \ { \ register u32 r4 asm("r4"); \ __barebox_arm_head(); \ + arm_setup_stack(stack_top); \ __##name(r4); \ } \ - static void NAKED noinline __##name \ - (u32 r4) + static void noinline __##name(u32 r4) + +/* BootROM already initialized usable stack top */ +#define SAMA5D2_ENTRY_FUNCTION(name, r4) \ + SAMA5_ENTRY_FUNCTION(name, 0, r4) + +#define SAMA5D3_ENTRY_FUNCTION(name, r4) \ + SAMA5_ENTRY_FUNCTION(name, SAMA5D3_SRAM_BASE + SAMA5D3_SRAM_SIZE, r4) + #endif -- 2.30.2