From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 8EFE41A003C for ; Thu, 11 Feb 2016 18:37:41 +1100 (AEDT) Received: from e23smtp09.au.ibm.com (e23smtp09.au.ibm.com [202.81.31.142]) (using TLSv1 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 53008140B8C for ; Thu, 11 Feb 2016 18:37:41 +1100 (AEDT) Received: from localhost by e23smtp09.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 11 Feb 2016 17:37:41 +1000 Received: from d23relay06.au.ibm.com (d23relay06.au.ibm.com [9.185.63.219]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id B635A2CE8054 for ; Thu, 11 Feb 2016 18:37:35 +1100 (EST) Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay06.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u1B7bMD243057400 for ; Thu, 11 Feb 2016 18:37:31 +1100 Received: from d23av04.au.ibm.com (localhost [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u1B7b3mu016267 for ; Thu, 11 Feb 2016 18:37:03 +1100 From: Andrew Donnellan To: linuxppc-dev@ozlabs.org, mpe@ellerman.id.au Cc: stewart@linux.vnet.ibm.com, joel@jms.id.au Subject: [PATCH V3 2/2] powerpc/xmon: add command to dump OPAL msglog Date: Thu, 11 Feb 2016 18:36:20 +1100 Message-Id: <1455176180-19670-2-git-send-email-andrew.donnellan@au1.ibm.com> In-Reply-To: <1455176180-19670-1-git-send-email-andrew.donnellan@au1.ibm.com> References: <1455002269-26543-1-git-send-email-andrew.donnellan@au1.ibm.com> <1455176180-19670-1-git-send-email-andrew.donnellan@au1.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Add the 'do' command to dump the OPAL msglog in xmon. Signed-off-by: Andrew Donnellan --- arch/powerpc/xmon/xmon.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 07a8508..48b75ae 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -47,6 +47,11 @@ #include #include +#ifdef CONFIG_PPC_POWERNV +#include +#include +#endif + #ifdef CONFIG_PPC64 #include #include @@ -119,6 +124,11 @@ static void dump(void); static void prdump(unsigned long, long); static int ppc_inst_dump(unsigned long, long, int); static void dump_log_buf(void); + +#ifdef CONFIG_PPC_POWERNV +static void dump_opal_msglog(void); +#endif + static void backtrace(struct pt_regs *); static void excprint(struct pt_regs *); static void prregs(struct pt_regs *); @@ -202,6 +212,10 @@ Commands:\n\ df dump float values\n\ dd dump double values\n\ dl dump the kernel log buffer\n" +#ifdef CONFIG_PPC_POWERNV + "\ + do dump the OPAL message log\n" +#endif #ifdef CONFIG_PPC64 "\ dp[#] dump paca for current cpu, or cpu #\n\ @@ -2253,6 +2267,12 @@ dump(void) last_cmd = "di\n"; } else if (c == 'l') { dump_log_buf(); + } else if (c == 'o') { +#ifdef CONFIG_PPC_POWERNV + dump_opal_msglog(); +#else + printf("Machine is not running OPAL firmware.\n"); +#endif } else if (c == 'r') { scanhex(&ndump); if (ndump == 0) @@ -2395,6 +2415,46 @@ dump_log_buf(void) catch_memory_errors = 0; } +#ifdef CONFIG_PPC_POWERNV +void +dump_opal_msglog(void) +{ + unsigned char buf[128]; + ssize_t res; + loff_t pos = 0; + + if (!firmware_has_feature(FW_FEATURE_OPAL)) { + printf("Machine is not running OPAL firmware.\n"); + return; + } + + if (setjmp(bus_error_jmp) != 0) { + printf("Error dumping OPAL msglog!\n"); + return; + } + + catch_memory_errors = 1; + sync(); + + xmon_start_pagination(); + while ((res = opal_msglog_copy(buf, pos, sizeof(buf) - 1))) { + if (res < 0) { + printf("Error dumping OPAL msglog! Error: %zd\n", res); + break; + } + buf[res] = '\0'; + printf("%s", buf); + pos += res; + } + xmon_end_pagination(); + + sync(); + /* wait a little while to see if we get a machine check */ + __delay(200); + catch_memory_errors = 0; +} +#endif + /* * Memory operations - move, set, print differences */ -- Andrew Donnellan Software Engineer, OzLabs andrew.donnellan@au1.ibm.com Australia Development Lab, Canberra +61 2 6201 8874 (work) IBM Australia Limited