From patchwork Mon Jul 15 09:36:27 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ying.zhang@freescale.com X-Patchwork-Id: 258986 X-Patchwork-Delegate: afleming@freescale.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 94A262C00D7 for ; Mon, 15 Jul 2013 20:31:34 +1000 (EST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 2480D4A052; Mon, 15 Jul 2013 12:31:25 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at theia.denx.de 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 cOEQ7Jo1pVsA; Mon, 15 Jul 2013 12:31:24 +0200 (CEST) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 02DE14A053; Mon, 15 Jul 2013 12:30:57 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id D7EF54A020 for ; Mon, 15 Jul 2013 12:30:50 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at theia.denx.de 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 O3mrt-8MRGr2 for ; Mon, 15 Jul 2013 12:30:46 +0200 (CEST) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 BL_NJABL=ERR(-1.5) (only DNSBL check requested) Received: from tx2outboundpool.messaging.microsoft.com (tx2ehsobe004.messaging.microsoft.com [65.55.88.14]) by theia.denx.de (Postfix) with ESMTPS id 1B82E4A028 for ; Mon, 15 Jul 2013 12:30:31 +0200 (CEST) Received: from mail143-tx2-R.bigfish.com (10.9.14.231) by TX2EHSOBE007.bigfish.com (10.9.40.27) with Microsoft SMTP Server id 14.1.225.22; Mon, 15 Jul 2013 10:30:30 +0000 Received: from mail143-tx2 (localhost [127.0.0.1]) by mail143-tx2-R.bigfish.com (Postfix) with ESMTP id D289F20082; Mon, 15 Jul 2013 10:30:29 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzc8kzz1f42h1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6hzz8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h1354h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1d0ch1d2eh1d3fh1dfeh1dffh1e23h1155h) Received: from mail143-tx2 (localhost.localdomain [127.0.0.1]) by mail143-tx2 (MessageSwitch) id 1373884228707906_17332; Mon, 15 Jul 2013 10:30:28 +0000 (UTC) Received: from TX2EHSMHS008.bigfish.com (unknown [10.9.14.231]) by mail143-tx2.bigfish.com (Postfix) with ESMTP id A7D7736005C; Mon, 15 Jul 2013 10:30:28 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by TX2EHSMHS008.bigfish.com (10.9.99.108) with Microsoft SMTP Server (TLS) id 14.1.225.23; Mon, 15 Jul 2013 10:30:28 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-005.039d.mgd.msft.net (10.84.1.17) with Microsoft SMTP Server (TLS) id 14.3.136.1; Mon, 15 Jul 2013 10:32:44 +0000 Received: from localhost.localdomain (tank.ap.freescale.net [10.193.20.104]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r6FAUHFN025311; Mon, 15 Jul 2013 03:30:26 -0700 From: To: Date: Mon, 15 Jul 2013 17:36:27 +0800 Message-ID: <1373880990-2904-4-git-send-email-ying.zhang@freescale.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1373880990-2904-1-git-send-email-ying.zhang@freescale.com> References: <1373880990-2904-1-git-send-email-ying.zhang@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com Cc: scottwood@freescale.com, afleming@gmail.com, X.Xie@freescale.com, Ying Zhang Subject: [U-Boot] [PATCH 4/7 v8] powerpc : spi flash : Support to start from eSPI with SPL X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.11 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de From: Ying Zhang This patch introduces SPL to enable a loader stub that being loaded by the code from the internal on-chip ROM. It loads the final uboot image into DDR, then jump to it to begin execution. The SPL's size is sizeable, the maximum size must not exceed the size of L2 SRAM. It initializes the DDR through SPD code, and copys final uboot image to DDR. So there are two stage uboot images: * spl_boot, 96KB size. The env variables are copied to L2 SRAM, so that ddr spd code can get the interleaving mode setting in env. It loads final uboot image from offset 96KB. * final uboot image, size is variable depends on the functions enabled. Signed-off-by: Ying Zhang --- Change from v7: - No change. Change from v6: - No change. Change from v5: - Split from "powerpc/p1022ds: boot from spi flash with SPL" - this patch add the capability starting from eSPI with SPL. Change from v4: - No change. Change from v3: - No change. Change from v2: - No change. Change from v1: - Split from "boot from SD card/SPI flash with SPL". drivers/mtd/spi/Makefile | 1 + drivers/mtd/spi/fsl_espi_spl.c | 78 ++++++++++++++++++++++++++++++++++++++++ drivers/mtd/spi/spi_flash.c | 2 + 3 files changed, 81 insertions(+), 0 deletions(-) create mode 100644 drivers/mtd/spi/fsl_espi_spl.c diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile index ecbb210..39e4e1d 100644 --- a/drivers/mtd/spi/Makefile +++ b/drivers/mtd/spi/Makefile @@ -27,6 +27,7 @@ LIB := $(obj)libspi_flash.o ifdef CONFIG_SPL_BUILD COBJS-$(CONFIG_SPL_SPI_LOAD) += spi_spl_load.o +COBJS-$(CONFIG_SPL_SPI_BOOT) += fsl_espi_spl.o endif COBJS-$(CONFIG_SPI_FLASH) += spi_flash.o diff --git a/drivers/mtd/spi/fsl_espi_spl.c b/drivers/mtd/spi/fsl_espi_spl.c new file mode 100644 index 0000000..443c2e1 --- /dev/null +++ b/drivers/mtd/spi/fsl_espi_spl.c @@ -0,0 +1,78 @@ +/* + * Copyright 2013 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#include +#include +#include + +#define ESPI_BOOT_IMAGE_SIZE 0x48 +#define ESPI_BOOT_IMAGE_ADDR 0x50 +#define CONFIG_CFG_DATA_SECTOR 0 + +/* + * The main entry for SPI booting. It's necessary that SDRAM is already + * configured and available since this code loads the main U-Boot image + * from SPI into SDRAM and starts it from there. + */ +void spi_boot(void) +{ + void (*uboot)(void) __noreturn; + u32 offset, code_len; + unsigned char *buf = NULL; + struct spi_flash *flash; + + flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, + CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); + if (flash == NULL) { + puts("\nspi_flash_probe failed"); + hang(); + } + + /* + * Load U-Boot image from SPI flash into RAM + */ + buf = malloc(flash->page_size); + if (buf == NULL) { + puts("\nmalloc failed"); + hang(); + } + memset(buf, 0, flash->page_size); + + spi_flash_read(flash, CONFIG_CFG_DATA_SECTOR, \ + flash->page_size, (void *)buf); + offset = *(u32 *)(buf + ESPI_BOOT_IMAGE_ADDR); + /* Skip spl code */ + offset += CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS; + /* Get the code size from offset 0x48 */ + code_len = *(u32 *)(buf + ESPI_BOOT_IMAGE_SIZE); + /* Skip spl code */ + code_len = code_len - CONFIG_SPL_MAX_SIZE; + /* copy code to DDR */ + spi_flash_read(flash, offset, code_len, \ + (void *)CONFIG_SYS_SPI_FLASH_U_BOOT_DST); + /* + * Jump to U-Boot image + */ + flush_cache(CONFIG_SYS_SPI_FLASH_U_BOOT_DST, \ + code_len); + uboot = (void *) CONFIG_SYS_SPI_FLASH_U_BOOT_START; + (*uboot)(); +} diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 6a6fe37..e474f5c 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -554,12 +554,14 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, goto err_manufacturer_probe; } #endif +#ifndef CONFIG_SPL_BUILD printf("SF: Detected %s with page size ", flash->name); print_size(flash->sector_size, ", total "); print_size(flash->size, ""); if (flash->memory_map) printf(", mapped at %p", flash->memory_map); puts("\n"); +#endif #ifndef CONFIG_SPI_FLASH_BAR if (flash->size > SPI_FLASH_16MB_BOUN) { puts("SF: Warning - Only lower 16MiB accessible,");