From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756560AbZFEIVu (ORCPT ); Fri, 5 Jun 2009 04:21:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755830AbZFEIG5 (ORCPT ); Fri, 5 Jun 2009 04:06:57 -0400 Received: from smtp.gentoo.org ([140.211.166.183]:37586 "EHLO smtp.gentoo.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755707AbZFEIGJ (ORCPT ); Fri, 5 Jun 2009 04:06:09 -0400 From: Mike Frysinger To: linux-kernel@vger.kernel.org Cc: uclinux-dist-devel@blackfin.uclinux.org Subject: [PATCH 47/62] Blackfin: override default uClinux MTD addr/size Date: Fri, 5 Jun 2009 04:04:56 -0400 Message-Id: <1244189111-19639-48-git-send-email-vapier@gentoo.org> X-Mailer: git-send-email 1.6.3.1 In-Reply-To: <1244189111-19639-1-git-send-email-vapier@gentoo.org> References: <1244189111-19639-1-git-send-email-vapier@gentoo.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Due to a processor anomaly (05000263 to be exact), most Blackfin parts cannot keep the embedded filesystem image directly after the kernel in RAM. Instead, the filesystem needs to be relocated to the end of memory. As such, we need to tweak the map addr/size during boot for Blackfin systems. Signed-off-by: Mike Frysinger --- arch/blackfin/kernel/setup.c | 11 +++++++---- 1 files changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index 59d9e3f..ed8452f 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -18,9 +18,12 @@ #include #include +#ifdef CONFIG_MTD_UCLINUX +#include #include #include #include +#endif #include #include @@ -45,6 +48,7 @@ EXPORT_SYMBOL(_ramend); EXPORT_SYMBOL(reserved_mem_dcache_on); #ifdef CONFIG_MTD_UCLINUX +extern struct map_info uclinux_ram_map; unsigned long memory_mtd_end, memory_mtd_start, mtd_size; unsigned long _ebss; EXPORT_SYMBOL(memory_mtd_end); @@ -535,10 +539,9 @@ static __init void memory_setup(void) } /* Relocate MTD image to the top of memory after the uncached memory area */ - dma_memcpy((char *)memory_end, _end, mtd_size); - - memory_mtd_start = memory_end; - _ebss = memory_mtd_start; /* define _ebss for compatible */ + uclinux_ram_map.phys = memory_mtd_start = memory_end; + uclinux_ram_map.size = mtd_size; + dma_memcpy((void *)uclinux_ram_map.phys, _end, uclinux_ram_map.size); #endif /* CONFIG_MTD_UCLINUX */ #if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263) -- 1.6.3.1