From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nishanth Menon Date: Tue, 3 Mar 2015 10:25:51 -0600 Subject: [U-Boot] [PATCH V3 0/11] ARM: OMAP3-DRA7: CP15 erratum workarounds and improvements In-Reply-To: <20150303084515.642dbf57@i7> References: <1424897719-12666-1-git-send-email-nm@ti.com> <20150226094022.1b8fbe47@i7> <20150226181425.691fb31f@i7> <20150302211608.GC25373@bill-the-cat> <20150303084515.642dbf57@i7> Message-ID: <54F5E08F.2070904@ti.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 03/03/2015 12:45 AM, Siarhei Siamashka wrote: [...] > In one way, this can be verified by just checking that the necessary > bits in the system registers are properly set according to the > recommendations from the errata lists. AFAIK, only writes to these > registers are restricted, so that it has to be done in an OMAP specific > way using the SMC calls. But reading them somewhere early in the > Linux kernel and doing printk should be fine. http://paste.ubuntu.org.cn/2522971 a quick patch on v4.0-rc1 to do the same. Sorry, test farm I have access to, is a bit wonky at the moment. (use omap2plus_defconfig) few of the boards I could cajole logs out are as follows (uses legacy bootloaders, not completely controlled source etc.. and are in a remote location that I cannot update easily): > am335x-evm.txt:[ 0.000000] XXXX o3_dump_arm_regs:CPUID=0x413fc082 ACR=0x00000042 L2AUXCR=0x00000042 > am335x-sk.txt:[ 0.000000] XXXX o3_dump_arm_regs:CPUID=0x413fc082 ACR=0x00000042 L2AUXCR=0x00000042 > am3517-evm.txt:[ 0.000000] XXXX o3_dump_arm_regs:CPUID=0x411fc087 ACR=0x000000e2 L2AUXCR=0x00000042 > am37x-evm.txt:[ 0.000000] XXXX o3_dump_arm_regs:CPUID=0x413fc082 ACR=0x000000e2 L2AUXCR=0x00000042 > am57xx-evm.txt:[ 0.000000] XXXX o5_dump_arm_regs:CPUID=0x412fc0f2 L2CTLR=0x01800083 L2ACLR=0x00000000 L2PFR=0x000009b0 ACTLR=0x00000040 > beagleboard.txt:[ 0.000000] XXXX o3_dump_arm_regs:CPUID=0x413fc082 ACR=0x000000e2 L2AUXCR=0x00000042 > beaglebone-black.txt:[ 0.000000] XXXX o3_dump_arm_regs:CPUID=0x413fc082 ACR=0x00000042 L2AUXCR=0x00000042 > beaglebone.txt:[ 0.000000] XXXX o3_dump_arm_regs:CPUID=0x413fc082 ACR=0x00000042 L2AUXCR=0x00000042 > dra72x-evm.txt:[ 0.000000] XXXX o5_dump_arm_regs:CPUID=0x412fc0f2 L2CTLR=0x00800083 L2ACLR=0x00000000 L2PFR=0x000009b0 ACTLR=0x00000040 > dra7xx-evm.txt:[ 0.000000] XXXX o5_dump_arm_regs:CPUID=0x412fc0f2 L2CTLR=0x01800083 L2ACLR=0x00000000 L2PFR=0x000009b0 ACTLR=0x00000040 > omap5-evm.txt:[ 0.000000] XXXX o5_dump_arm_regs:CPUID=0x412fc0f2 L2CTLR=0x01800083 L2ACLR=0x00000000 L2PFR=0x000009b0 ACTLR=0x00000040 -- Regards, Nishanth Menon