Blackfin arch: print out error/warning if you are running on the incorrect CPU type

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 27 insertions, 16 deletions

diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 4267523912bd..74370f3707b9 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -813,17 +813,23 @@ void __init setup_arch(char **cmdline_p)
                 printk(KERN_INFO "Compiled for ADSP-%s Rev none\n", CPU);
         else
                 printk(KERN_INFO "Compiled for ADSP-%s Rev 0.%d\n", CPU, bfin_compiled_revid());
-        if (bfin_revid() != bfin_compiled_revid()) {
-                if (bfin_compiled_revid() == -1)
-                        printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n",
-                               bfin_revid());
-                else if (bfin_compiled_revid() != 0xffff)
-                        printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
-                               bfin_compiled_revid(), bfin_revid());
+
+        if (unlikely(CPUID != bfin_cpuid()))
+                printk(KERN_ERR "ERROR: Not running on ADSP-%s: unknown CPUID 0x%04x Rev 0.%d\n",
+                        CPU, bfin_cpuid(), bfin_revid());
+        else {
+                if (bfin_revid() != bfin_compiled_revid()) {
+                        if (bfin_compiled_revid() == -1)
+                                printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n",
+                                       bfin_revid());
+                        else if (bfin_compiled_revid() != 0xffff)
+                                printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
+                                       bfin_compiled_revid(), bfin_revid());
+                }
+                if (bfin_revid() <= CONFIG_BF_REV_MIN || bfin_revid() > CONFIG_BF_REV_MAX)
+                        printk(KERN_ERR "Warning: Unsupported Chip Revision ADSP-%s Rev 0.%d detected\n",
+                               CPU, bfin_revid());
         }
-        if (bfin_revid() <= CONFIG_BF_REV_MIN || bfin_revid() > CONFIG_BF_REV_MAX)
-                printk(KERN_ERR "Warning: Unsupported Chip Revision ADSP-%s Rev 0.%d detected\n",
-                       CPU, bfin_revid());
 
         printk(KERN_INFO "Blackfin Linux support by http://blackfin.uclinux.org/\n");
 
@@ -997,13 +1003,18 @@ static int show_cpuinfo(struct seq_file *m, void *v)
         }
 
         seq_printf(m, "processor\t: %d\n"
-                "vendor_id\t: %s\n"
-                "cpu family\t: 0x%x\n"
-                "model name\t: ADSP-%s %lu(MHz CCLK) %lu(MHz SCLK) (%s)\n"
-                "stepping\t: %d\n",
+                "vendor_id\t: %s\n",
                 *(unsigned int *)v,
-                vendor,
-                (bfin_read_CHIPID() & CHIPID_FAMILY),
+                vendor);
+
+        if (CPUID == bfin_cpuid())
+                seq_printf(m, "cpu family\t: 0x%04x\n", CPUID);
+        else
+                seq_printf(m, "cpu family\t: Compiled for:0x%04x, running on:0x%04x\n",
+                        CPUID, bfin_cpuid());
+
+        seq_printf(m, "model name\t: ADSP-%s %lu(MHz CCLK) %lu(MHz SCLK) (%s)\n"
+                "stepping\t: %d\n",
                 cpu, cclk/1000000, sclk/1000000,
 #ifdef CONFIG_MPU
                 "mpu on",