Re: [U-Boot] [PATCH] Move L2-cache enable/disable function to soc dependent code
Ok. Jean. Very thanks to review. I have a question about one thing you pointed out.
=== as it's nearly only in asm implement it in assembly olny will be better
- /* ES2 onwards we can disable/enable L2 ourselves */
- if (get_cpu_rev() >= CPU_3XX_ES20) {
__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));__asm__ __volatile__("orr %0, %0, #0x2":"=r"(i));
===
I think you tell me the position is in the assembly code like lowlevel_init.S. Is it right? Can you explain more detailed about this part, plz? :)
If my thinking is alright, I'll re-update this patch soon.
Best Regards, Riverful
----- 원본 메시지 ----- 보낸 사람: Jean-Christophe PLAGNIOL-VILLARD plagnioj@jcrosoft.com 보낸 날짜: 2009년 5월 30일 토요일 오전 6:46 받는 사람: Kim, Heung Jun riverful@gmail.com 참조: u-boot@lists.denx.de; Dirk Behme dirk.behme@googlemail.com; riverful.kim@samsung.com; inki.dae@samsung.com; mk7.kang@samsung.com; kyungmin.park@samsung.com; bhmin@samsung.com; jh106.choi@samsung.com 제목: Re: [U-Boot] [PATCH] Move L2-cache enable/disable function to soc dependent code
On 20:27 Fri 29 May , Kim, Heung Jun wrote:
The L2 cache enable/disable function in the cpu/arm_cortexa8/cpu.c moved to cpu/arm_cortexa8/omap3/cache.c.
please mention omap3 in the title too
Signed-off-by: HeungJun, Kim riverful.kim@samsung.com
- (C) Copyright 2002
- Gary Jennejohn, DENX Software Engineering, gj@denx.de
- See file CREDITS for list of people who contributed to this
- project.
- 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
- */
+/*
- L2 cache specific code
- */
+#include <common.h> +#include <command.h> +#include <asm/arch/sys_proto.h>
+void l2_cache_enable() +{
- unsigned long i;
- volatile unsigned int j;
as it's nearly only in asm implement it in assembly olny will be better
- /* ES2 onwards we can disable/enable L2 ourselves */
- if (get_cpu_rev() >= CPU_3XX_ES20) {
__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));__asm__ __volatile__("orr %0, %0, #0x2":"=r"(i));
<snip>
diff --git a/include/asm-arm/arch-omap3/sys_proto.h b/include/asm-arm/arch-omap3/sys_proto.h index 7361d08..4f43aef 100644 --- a/include/asm-arm/arch-omap3/sys_proto.h +++ b/include/asm-arm/arch-omap3/sys_proto.h @@ -63,5 +63,7 @@ void make_cs1_contiguous(void); void omap_nand_switch_ecc(int); void power_init_r(void); void dieid_num_r(void); +void l2_cache_disable(); +void l2_cache_enable();
please move these two funtcions in include/asm-arm/cache.h
please rebase it against the u-boot-arm/next
Best Regards, J.
participants (1)
-
HeungJun, Kim