[Skiboot] [PATCH 5/6] Abstract HILE and attn enable bit definitions for HID0

[Michael Neuling]

Abstract HILE and attn enable bits definitions for HID0 in case these
locations randomly change in future chip revisions.

Signed-off-by: Michael Neuling <mikey at neuling.org>
---
 core/cpu.c          | 12 +++++++++---
 include/processor.h |  4 ++--
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/core/cpu.c b/core/cpu.c
index 46aea9a..4fda5a2 100644
--- a/core/cpu.c
+++ b/core/cpu.c
@@ -47,6 +47,8 @@ unsigned int cpu_max_pir;
 struct cpu_thread *boot_cpu;
 static struct lock reinit_lock = LOCK_UNLOCKED;
 static bool hile_supported;
+static unsigned long hid0_hile;
+static unsigned long hid0_attn;
 
 unsigned long cpu_secondary_start __force_data = 0;
 
@@ -404,7 +406,7 @@ void init_hid(void)
 	unsigned long hid0;
 
 	hid0 = mfspr(SPR_HID0);
-	hid0 |= SPR_HID0_ENABLE_ATTN;
+	hid0 |= hid0_attn;
 	set_hid0(hid0);
 }
 
@@ -432,10 +434,14 @@ void init_boot_cpu(void)
 	case PVR_TYPE_P8:
 		proc_gen = proc_gen_p8;
 		hile_supported = PVR_VERS_MAJ(mfspr(SPR_PVR)) >= 2;
+		hid0_hile = SPR_HID0_POWER8_HILE;
+		hid0_attn = SPR_HID0_POWER8_ENABLE_ATTN;
 		break;
 	case PVR_TYPE_P8NVL:
 		proc_gen = proc_gen_p8;
 		hile_supported = true;
+		hid0_hile = SPR_HID0_POWER8_HILE;
+		hid0_attn = SPR_HID0_POWER8_ENABLE_ATTN;
 		break;
 	default:
 		proc_gen = proc_gen_unknown;
@@ -691,9 +697,9 @@ static void cpu_change_hile(void *hilep)
 
 	hid0 = mfspr(SPR_HID0);
 	if (hile)
-		hid0 |= SPR_HID0_HILE;
+		hid0 |= hid0_hile;
 	else
-		hid0 &= ~SPR_HID0_HILE;
+		hid0 &= ~hid0_hile;
 	prlog(PR_DEBUG, "CPU: [%08x] HID0 set to 0x%016lx\n",
 	      this_cpu()->pir, hid0);
 	set_hid0(hid0);
diff --git a/include/processor.h b/include/processor.h
index 7fa5377..e05c4bb 100644
--- a/include/processor.h
+++ b/include/processor.h
@@ -161,8 +161,8 @@
 /* Bits in HID0 */
 #define SPR_HID0_POWER8_4LPARMODE	PPC_BIT(2)
 #define SPR_HID0_POWER8_2LPARMODE	PPC_BIT(6)
-#define SPR_HID0_HILE			PPC_BIT(19)
-#define SPR_HID0_ENABLE_ATTN		PPC_BIT(31)
+#define SPR_HID0_POWER8_HILE		PPC_BIT(19)
+#define SPR_HID0_POWER8_ENABLE_ATTN	PPC_BIT(31)
 
 /* PVR bits */
 #define SPR_PVR_TYPE			0xffff0000
-- 
2.7.4