From: Ali Saidi <Ali.Saidi@ARM.com>
Date: Fri, 2 Mar 2012 14:18:19 +0000 (-0600)
Subject: ARM: FIx a bug preventing multiple cores booting a VExpress_EMM machine.
X-Git-Tag: stable_2012_06_28~200
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b129d7ce00a2cb6f0bbdcee90f0202cda8449117;p=gem5.git

ARM: FIx a bug preventing multiple cores booting a VExpress_EMM machine.

New kernel code verifies that multi-processor extensions are available
before booting secondary CPUs.
---

diff --git a/src/arch/arm/isa.cc b/src/arch/arm/isa.cc
index 9d76ca60e..b8a0fe282 100644
--- a/src/arch/arm/isa.cc
+++ b/src/arch/arm/isa.cc
@@ -189,7 +189,9 @@ ISA::readMiscReg(int misc_reg, ThreadContext *tc)
 
     switch (misc_reg) {
       case MISCREG_MPIDR:
-        return tc->cpuId();
+
+        return 0x80000000 | // multiprocessor extensions available
+               tc->cpuId();
         break;
       case MISCREG_ID_MMFR0:
         return 0x03; // VMSAv7 support