[ARM] 3234/1: Update cpu_architecture() to deal with the new ID format
Patch from Catalin Marinas
Since ARM1176, the CPU ID format has changed and it will also be used for
future ARM architectures.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 2cab741a..c45d10d 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -205,7 +205,7 @@
"5TE",
"5TEJ",
"6TEJ",
- "?(10)",
+ "7",
"?(11)",
"?(12)",
"?(13)",
@@ -258,14 +258,17 @@
{
int cpu_arch;
- if ((processor_id & 0x0000f000) == 0) {
+ if ((processor_id & 0x0008f000) == 0) {
cpu_arch = CPU_ARCH_UNKNOWN;
- } else if ((processor_id & 0x0000f000) == 0x00007000) {
+ } else if ((processor_id & 0x0008f000) == 0x00007000) {
cpu_arch = (processor_id & (1 << 23)) ? CPU_ARCH_ARMv4T : CPU_ARCH_ARMv3;
- } else {
+ } else if ((processor_id & 0x00080000) == 0x00000000) {
cpu_arch = (processor_id >> 16) & 7;
if (cpu_arch)
cpu_arch += CPU_ARCH_ARMv3;
+ } else {
+ /* the revised CPUID */
+ cpu_arch = ((processor_id >> 12) & 0xf) - 0xb + CPU_ARCH_ARMv6;
}
return cpu_arch;
@@ -863,11 +866,11 @@
seq_printf(m, "\nCPU implementer\t: 0x%02x\n", processor_id >> 24);
seq_printf(m, "CPU architecture: %s\n", proc_arch[cpu_architecture()]);
- if ((processor_id & 0x0000f000) == 0x00000000) {
+ if ((processor_id & 0x0008f000) == 0x00000000) {
/* pre-ARM7 */
seq_printf(m, "CPU part\t\t: %07x\n", processor_id >> 4);
} else {
- if ((processor_id & 0x0000f000) == 0x00007000) {
+ if ((processor_id & 0x0008f000) == 0x00007000) {
/* ARM7 */
seq_printf(m, "CPU variant\t: 0x%02x\n",
(processor_id >> 16) & 127);