From patchwork Fri Jun 12 10:53:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 483493 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by ozlabs.org (Postfix) with ESMTP id 4ADD31401DA for ; Fri, 12 Jun 2015 20:54:47 +1000 (AEST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 9BDE64B69A; Fri, 12 Jun 2015 12:54:30 +0200 (CEST) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id d3Zke7Z_I-TN; Fri, 12 Jun 2015 12:54:30 +0200 (CEST) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 39D884B689; Fri, 12 Jun 2015 12:54:23 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id DAC414B65D for ; Fri, 12 Jun 2015 12:54:15 +0200 (CEST) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rGZHtMcaij2P for ; Fri, 12 Jun 2015 12:54:15 +0200 (CEST) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from gagarine.paulk.fr (gagarine.paulk.fr [109.190.93.129]) by theia.denx.de (Postfix) with ESMTPS id 7F7654B681 for ; Fri, 12 Jun 2015 12:54:09 +0200 (CEST) Received: by gagarine.paulk.fr (Postfix, from userid 65534) id E909C1FE51; Fri, 12 Jun 2015 12:54:08 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on gagarine.paulk.fr X-Spam-Level: * X-Spam-Status: No, score=1.3 required=5.0 tests=RDNS_NONE autolearn=no autolearn_force=no version=3.4.0 Received: from localhost.localdomain (unknown [192.168.1.22]) by gagarine.paulk.fr (Postfix) with ESMTP id A21C21FE5F; Fri, 12 Jun 2015 12:53:26 +0200 (CEST) From: Paul Kocialkowski To: u-boot@lists.denx.de Date: Fri, 12 Jun 2015 12:53:00 +0200 Message-Id: <1434106381-1397-8-git-send-email-contact@paulk.fr> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1434106381-1397-1-git-send-email-contact@paulk.fr> References: <1434106381-1397-1-git-send-email-contact@paulk.fr> Cc: Marek Vasut , Tom Rini , =?UTF-8?q?Pali=20Roh=C3=A1r?= Subject: [U-Boot] [PATCH v3 7/8] omap4: Definitions for SYS_BOOT-based fallback boot device selection X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.15 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" This introduces code to read the value of the SYS_BOOT pins on the OMAP4, as well as the memory-preferred scheme for the interpretation of each value. Signed-off-by: Paul Kocialkowski --- arch/arm/cpu/armv7/omap4/Makefile | 1 + arch/arm/cpu/armv7/omap4/boot.c | 60 ++++++++++++++++++++++++++++++++++++ arch/arm/cpu/armv7/omap4/prcm-regs.c | 1 + 3 files changed, 62 insertions(+) create mode 100644 arch/arm/cpu/armv7/omap4/boot.c diff --git a/arch/arm/cpu/armv7/omap4/Makefile b/arch/arm/cpu/armv7/omap4/Makefile index 76a032a..564f1f6 100644 --- a/arch/arm/cpu/armv7/omap4/Makefile +++ b/arch/arm/cpu/armv7/omap4/Makefile @@ -5,6 +5,7 @@ # SPDX-License-Identifier: GPL-2.0+ # +obj-y += boot.o obj-y += sdram_elpida.o obj-y += hwinit.o obj-y += emif.o diff --git a/arch/arm/cpu/armv7/omap4/boot.c b/arch/arm/cpu/armv7/omap4/boot.c new file mode 100644 index 0000000..4b5aa77 --- /dev/null +++ b/arch/arm/cpu/armv7/omap4/boot.c @@ -0,0 +1,60 @@ +/* + * OMAP4 boot + * + * Copyright (C) 2015 Paul Kocialkowski + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +static u32 boot_devices[] = { + BOOT_DEVICE_MMC2, + BOOT_DEVICE_XIP, + BOOT_DEVICE_XIPWAIT, + BOOT_DEVICE_NAND, + BOOT_DEVICE_XIPWAIT, + BOOT_DEVICE_MMC1, + BOOT_DEVICE_ONENAND, + BOOT_DEVICE_ONENAND, + BOOT_DEVICE_MMC2, + BOOT_DEVICE_ONENAND, + BOOT_DEVICE_XIPWAIT, + BOOT_DEVICE_NAND, + BOOT_DEVICE_NAND, + BOOT_DEVICE_MMC1, + BOOT_DEVICE_ONENAND, + BOOT_DEVICE_MMC2, + BOOT_DEVICE_XIP, + BOOT_DEVICE_XIPWAIT, + BOOT_DEVICE_NAND, + BOOT_DEVICE_MMC1, + BOOT_DEVICE_MMC1, + BOOT_DEVICE_ONENAND, + BOOT_DEVICE_MMC2, + BOOT_DEVICE_XIP, + BOOT_DEVICE_MMC2_2, + BOOT_DEVICE_NAND, + BOOT_DEVICE_MMC2_2, + BOOT_DEVICE_MMC1, + BOOT_DEVICE_MMC2_2, + BOOT_DEVICE_MMC2_2, + BOOT_DEVICE_NONE, + BOOT_DEVICE_XIPWAIT, +}; + +u32 omap_sys_boot_device(void) +{ + u32 sys_boot; + + /* Grab the first 5 bits of the status register for SYS_BOOT. */ + sys_boot = readl((u32 *) (*ctrl)->control_status) & ((1 << 5) - 1); + + if (sys_boot >= (sizeof(boot_devices) / sizeof(u32))) + return BOOT_DEVICE_NONE; + + return boot_devices[sys_boot]; +} diff --git a/arch/arm/cpu/armv7/omap4/prcm-regs.c b/arch/arm/cpu/armv7/omap4/prcm-regs.c index 1ed146b..8698ec7 100644 --- a/arch/arm/cpu/armv7/omap4/prcm-regs.c +++ b/arch/arm/cpu/armv7/omap4/prcm-regs.c @@ -279,6 +279,7 @@ struct prcm_regs const omap4_prcm = { }; struct omap_sys_ctrl_regs const omap4_ctrl = { + .control_status = 0x4A0022C4, .control_id_code = 0x4A002204, .control_std_fuse_opp_bgap = 0x4a002260, .control_status = 0x4a0022c4,