From patchwork Fri May 4 10:28:04 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vasant Hegde X-Patchwork-Id: 908660 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40cpGz3b26z9s1d for ; Fri, 4 May 2018 20:32:11 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 40cpGz2FJ0zDqkX for ; Fri, 4 May 2018 20:32:11 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com X-Original-To: skiboot@lists.ozlabs.org Delivered-To: skiboot@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=linux.vnet.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=hegdevasant@linux.vnet.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 40cpCZ4HyJzDrLj for ; Fri, 4 May 2018 20:29:14 +1000 (AEST) Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w44ATAqb062595 for ; Fri, 4 May 2018 06:29:11 -0400 Received: from e06smtp13.uk.ibm.com (e06smtp13.uk.ibm.com [195.75.94.109]) by mx0b-001b2d01.pphosted.com with ESMTP id 2hrh314k0x-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 04 May 2018 06:29:11 -0400 Received: from localhost by e06smtp13.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Fri, 4 May 2018 11:28:38 +0100 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w44ASbAf52428858; Fri, 4 May 2018 10:28:37 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4EA4011C05E; Fri, 4 May 2018 11:20:10 +0100 (BST) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B7FA311C050; Fri, 4 May 2018 11:20:08 +0100 (BST) Received: from hegdevasant.in.ibm.com (unknown [9.199.177.123]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 4 May 2018 11:20:08 +0100 (BST) From: Vasant Hegde To: skiboot@lists.ozlabs.org Date: Fri, 4 May 2018 15:58:04 +0530 X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180504102817.11059-1-hegdevasant@linux.vnet.ibm.com> References: <20180504102817.11059-1-hegdevasant@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18050410-0012-0000-0000-000005D1ECF3 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18050410-0013-0000-0000-0000194F1984 Message-Id: <20180504102817.11059-5-hegdevasant@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-05-04_03:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1805040097 Subject: [Skiboot] [PATCH v2 04/17] hdata: Setup memory for MDDT table X-BeenThere: skiboot@lists.ozlabs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Mailing list for skiboot development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: stewart@linux.vnet.ibm.com MIME-Version: 1.0 Errors-To: skiboot-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Skiboot" Each entry in MDST and MDDT takes 16 bytes. With 1K we can have upto 64 entries. This is sufficient to support memory preserving IPL. Presently OPAL reserves 2K memory for MDST table. Lets split this into two region of 1K for MDST and MDDT table. Signed-off-by: Vasant Hegde --- include/mem-map.h | 8 ++++++-- skiboot.lds.S | 5 +++++ 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/include/mem-map.h b/include/mem-map.h index 3e30d9b76..98f781cc5 100644 --- a/include/mem-map.h +++ b/include/mem-map.h @@ -49,12 +49,16 @@ */ #define PROCIN_OFF (SPIRA_OFF + 0x800) -/* Initial MDST table like PROCIN, we need fixed addresses, +/* Initial MDST and MDDT tables like PROCIN, we need fixed addresses, * we leave a 2k gap for PROCIN */ #define MDST_TABLE_OFF (SPIRA_OFF + 0x1000) +#define MDST_TABLE_SIZE 0x400 -/* Like MDST, we need fixed address for CPU control header. +#define MDDT_TABLE_OFF (SPIRA_OFF + 0x1400) +#define MDDT_TABLE_SIZE 0x400 + +/* Like MDST and MDDT, we need fixed address for CPU control header. * We leave a 2k gap for MDST. CPU_CTL table is of size ~4k */ #define CPU_CTL_OFF (SPIRA_OFF + 0x1800) diff --git a/skiboot.lds.S b/skiboot.lds.S index a6e71077c..bc134fd41 100644 --- a/skiboot.lds.S +++ b/skiboot.lds.S @@ -46,6 +46,11 @@ SECTIONS KEEP(*(.mdst.data)) } + . = MDDT_TABLE_OFF; + .mddt : { + KEEP(*(.mddt.data)) + } + . = CPU_CTL_OFF; .cpuctrl : { KEEP(*(.cpuctrl.data))