[Xen-devel] [PATCH 02/12] arm: define some more cp15 registers

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

Complete the set of cache flush and add processor feature registers. Print the
latter on boot for debug.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
 xen/arch/arm/setup.c         |   17 +++++++++++++++++
 xen/include/asm-arm/cpregs.h |   18 ++++++++++++++++++
 2 files changed, 35 insertions(+), 0 deletions(-)

diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
index de7d5f2..ddc2392 100644
--- a/xen/arch/arm/setup.c
+++ b/xen/arch/arm/setup.c
@@ -64,6 +64,20 @@ static void __init init_idle_domain(void)
         /* TODO: setup_idle_pagetable(); */
 }
 
+static void processor_id(void)
+{
+    printk("Processor Features: %08x %08x\n",
+           READ_CP32(ID_PFR0), READ_CP32(ID_PFR0));
+    printk("Debug Features: %08x\n", READ_CP32(ID_DFR0));
+    printk("Auxiliary Features: %08x\n", READ_CP32(ID_AFR0));
+    printk("Memory Model Features: %08x %08x %08x %08x\n",
+           READ_CP32(ID_MMFR0), READ_CP32(ID_MMFR1),
+           READ_CP32(ID_MMFR2), READ_CP32(ID_MMFR3));
+    printk("ISA Features: %08x %08x %08x %08x %08x %08x\n",
+           READ_CP32(ID_ISAR0), READ_CP32(ID_ISAR1), READ_CP32(ID_ISAR2),
+           READ_CP32(ID_ISAR3), READ_CP32(ID_ISAR4), READ_CP32(ID_ISAR5));
+}
+
 static void __init setup_mm(unsigned long dtb_paddr, size_t dtb_size)
 {
     paddr_t ram_start;
@@ -185,7 +199,10 @@ void __init start_xen(unsigned long boot_phys_offset,
      */
     WRITE_CP32(0x80002558, VTCR); isb();
 
+    processor_id();
+
     softirq_init();
+
     tasklet_subsys_init();
 
     init_IRQ();
diff --git a/xen/include/asm-arm/cpregs.h b/xen/include/asm-arm/cpregs.h
index 3a4028d..d61ea88 100644
--- a/xen/include/asm-arm/cpregs.h
+++ b/xen/include/asm-arm/cpregs.h
@@ -93,6 +93,18 @@
 /* CP15 CR0: CPUID and Cache Type Registers */
 #define ID_PFR0         p15,0,c0,c1,0   /* Processor Feature Register 0 */
 #define ID_PFR1         p15,0,c0,c1,1   /* Processor Feature Register 1 */
+#define ID_DFR0         p15,0,c0,c1,2   /* Debug Feature Register 0 */
+#define ID_AFR0         p15,0,c0,c1,3   /* Auxiliary Feature Register 0 */
+#define ID_MMFR0        p15,0,c0,c1,4   /* Memory Model Feature Register 0 */
+#define ID_MMFR1        p15,0,c0,c1,5   /* Memory Model Feature Register 1 */
+#define ID_MMFR2        p15,0,c0,c1,6   /* Memory Model Feature Register 2 */
+#define ID_MMFR3        p15,0,c0,c1,7   /* Memory Model Feature Register 3 */
+#define ID_ISAR0        p15,0,c0,c2,0   /* ISA Feature Register 0 */
+#define ID_ISAR1        p15,0,c0,c2,1   /* ISA Feature Register 1 */
+#define ID_ISAR2        p15,0,c0,c2,2   /* ISA Feature Register 2 */
+#define ID_ISAR3        p15,0,c0,c2,3   /* ISA Feature Register 3 */
+#define ID_ISAR4        p15,0,c0,c2,4   /* ISA Feature Register 4 */
+#define ID_ISAR5        p15,0,c0,c2,5   /* ISA Feature Register 5 */
 #define CCSIDR          p15,1,c0,c0,0   /* Cache Size ID Registers */
 #define CLIDR           p15,1,c0,c0,1   /* Cache Level ID Register */
 #define CSSELR          p15,2,c0,c0,0   /* Cache Size Selection Register */
@@ -134,7 +146,11 @@
 #define ICIALLUIS       p15,0,c7,c1,0   /* Invalidate all instruction caches 
to PoU inner shareable */
 #define BPIALLIS        p15,0,c7,c1,6   /* Invalidate entire branch predictor 
array inner shareable */
 #define ICIALLU         p15,0,c7,c5,0   /* Invalidate all instruction caches 
to PoU */
+#define ICIMVAU         p15,0,c7,c5,1   /* Invalidate instruction caches by 
MVA to PoU */
 #define BPIALL          p15,0,c7,c5,6   /* Invalidate entire branch predictor 
array */
+#define BPIMVA          p15,0,c7,c5,7   /* Invalidate MVA from branch 
predictor array */
+#define DCIMVAC         p15,0,c7,c6,1   /* Invalidate data cache line by MVA 
to PoC */
+#define DCISW           p15,0,c7,c2,1   /* Invalidate data cache line by 
set/way */
 #define ATS1CPR         p15,0,c7,c8,0   /* Address Translation Stage 1. 
Non-Secure Kernel Read */
 #define ATS1CPW         p15,0,c7,c8,1   /* Address Translation Stage 1. 
Non-Secure Kernel Write */
 #define ATS1CUR         p15,0,c7,c8,2   /* Address Translation Stage 1. 
Non-Secure User Read */
@@ -144,6 +160,8 @@
 #define ATS12NSOUR      p15,0,c7,c8,6   /* Address Translation Stage 1+2 
Non-Secure User Read */
 #define ATS12NSOUW      p15,0,c7,c8,7   /* Address Translation Stage 1+2 
Non-Secure User Write */
 #define DCCMVAC         p15,0,c7,c10,1  /* Clean data or unified cache line by 
MVA to PoC */
+#define DCCSW           p15,0,c7,c10,2  /* Clean data cache line by set/way */
+#define DCCMVAU         p15,0,c7,c11,1  /* Clean data cache line by MVA to PoU 
*/
 #define DCCISW          p15,0,c7,c14,2  /* Clean and invalidate data cache 
line by set/way */
 #define ATS1HR          p15,4,c7,c8,0   /* Address Translation Stage 1 Hyp. 
Read */
 #define ATS1HW          p15,4,c7,c8,1   /* Address Translation Stage 1 Hyp. 
Write */
-- 
1.7.2.5


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