From 4dbdb7681e243431530df0725627192a0c4aefda Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@kernel.crashing.org>
Date: Tue, 10 Jun 2008 16:53:46 -0500
Subject: [PATCH] 85xx: expose cpu identification

The current cpu identification code is used just to return the name
of the processor at boot.  There are some other locations that the name
is useful (device tree setup).  Expose the functionality to other bits
of code.

Also, drop the 'E' suffix and add it on by looking at the SVR version
when we print this out.  This is mainly to allow the most flexible use
of the name.  The device tree code tends to not care about the 'E' suffix.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 cpu/mpc85xx/cpu.c           | 76 +++++++++++++++++++------------------
 include/asm-ppc/processor.h | 11 ++++++
 2 files changed, 51 insertions(+), 36 deletions(-)

diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c
index 58d23f4cce..d585e87995 100644
--- a/cpu/mpc85xx/cpu.c
+++ b/cpu/mpc85xx/cpu.c
@@ -32,38 +32,41 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-struct cpu_type {
-	char name[15];
-	u32 soc_ver;
+struct cpu_type cpu_type_list [] = {
+	CPU_TYPE_ENTRY(8533, 8533),
+	CPU_TYPE_ENTRY(8533, 8533_E),
+	CPU_TYPE_ENTRY(8540, 8540),
+	CPU_TYPE_ENTRY(8541, 8541),
+	CPU_TYPE_ENTRY(8541, 8541_E),
+	CPU_TYPE_ENTRY(8543, 8543),
+	CPU_TYPE_ENTRY(8543, 8543_E),
+	CPU_TYPE_ENTRY(8544, 8544),
+	CPU_TYPE_ENTRY(8544, 8544_E),
+	CPU_TYPE_ENTRY(8545, 8545),
+	CPU_TYPE_ENTRY(8545, 8545_E),
+	CPU_TYPE_ENTRY(8547, 8547_E),
+	CPU_TYPE_ENTRY(8548, 8548),
+	CPU_TYPE_ENTRY(8548, 8548_E),
+	CPU_TYPE_ENTRY(8555, 8555),
+	CPU_TYPE_ENTRY(8555, 8555_E),
+	CPU_TYPE_ENTRY(8560, 8560),
+	CPU_TYPE_ENTRY(8567, 8567),
+	CPU_TYPE_ENTRY(8567, 8567_E),
+	CPU_TYPE_ENTRY(8568, 8568),
+	CPU_TYPE_ENTRY(8568, 8568_E),
+	CPU_TYPE_ENTRY(8572, 8572),
+	CPU_TYPE_ENTRY(8572, 8572_E),
 };
 
-#define CPU_TYPE_ENTRY(x) {#x, SVR_##x}
+struct cpu_type *identify_cpu(uint ver)
+{
+	int i;
+	for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++)
+		if (cpu_type_list[i].soc_ver == ver)
+			return &cpu_type_list[i];
 
-struct cpu_type cpu_type_list [] = {
-	CPU_TYPE_ENTRY(8533),
-	CPU_TYPE_ENTRY(8533_E),
-	CPU_TYPE_ENTRY(8540),
-	CPU_TYPE_ENTRY(8541),
-	CPU_TYPE_ENTRY(8541_E),
-	CPU_TYPE_ENTRY(8543),
-	CPU_TYPE_ENTRY(8543_E),
-	CPU_TYPE_ENTRY(8544),
-	CPU_TYPE_ENTRY(8544_E),
-	CPU_TYPE_ENTRY(8545),
-	CPU_TYPE_ENTRY(8545_E),
-	CPU_TYPE_ENTRY(8547_E),
-	CPU_TYPE_ENTRY(8548),
-	CPU_TYPE_ENTRY(8548_E),
-	CPU_TYPE_ENTRY(8555),
-	CPU_TYPE_ENTRY(8555_E),
-	CPU_TYPE_ENTRY(8560),
-	CPU_TYPE_ENTRY(8567),
-	CPU_TYPE_ENTRY(8567_E),
-	CPU_TYPE_ENTRY(8568),
-	CPU_TYPE_ENTRY(8568_E),
-	CPU_TYPE_ENTRY(8572),
-	CPU_TYPE_ENTRY(8572_E),
-};
+	return NULL;
+}
 
 int checkcpu (void)
 {
@@ -74,7 +77,7 @@ int checkcpu (void)
 	uint fam;
 	uint ver;
 	uint major, minor;
-	int i;
+	struct cpu_type *cpu;
 #ifdef CONFIG_DDR_CLK_FREQ
 	volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
 	u32 ddr_ratio = ((gur->porpllsr) & 0x00003e00) >> 9;
@@ -89,14 +92,15 @@ int checkcpu (void)
 
 	puts("CPU:   ");
 
-	for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++)
-		if (cpu_type_list[i].soc_ver == ver) {
-			puts(cpu_type_list[i].name);
-			break;
-		}
+	cpu = identify_cpu(ver);
+	if (cpu) {
+		puts(cpu->name);
 
-	if (i == ARRAY_SIZE(cpu_type_list))
+		if (svr & 0x80000)
+			puts("E");
+	} else {
 		puts("Unknown");
+	}
 
 	printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);
 
diff --git a/include/asm-ppc/processor.h b/include/asm-ppc/processor.h
index 8bdfb9ddf3..61a0d053e2 100644
--- a/include/asm-ppc/processor.h
+++ b/include/asm-ppc/processor.h
@@ -960,6 +960,17 @@ n:
 #define SR15	15
 
 #ifndef __ASSEMBLY__
+
+struct cpu_type {
+	char name[15];
+	u32 soc_ver;
+};
+
+struct cpu_type *identify_cpu(uint ver);
+
+#define CPU_TYPE_ENTRY(n, v) \
+	{ .name = #n, .soc_ver = SVR_##v, }
+
 #ifndef CONFIG_MACH_SPECIFIC
 extern int _machine;
 extern int have_of;
-- 
2.30.2