ppc4xx: Add basic support for AMCC PPC460EX/460GT rev B chips

This patch is based on a diff created by Phong Vo from AMCC.

Signed-off-by: Phong Vo <pvo@amcc.com>
Signed-off-by: Stefan Roese <sr@denx.de>

cpu/ppc4xx/cpu.c

@@ -285,6 +285,9 @@ int checkcpu (void)
 	uint pvr = get_pvr();
 	ulong clock = gd->cpu_clk;
 	char buf[32];
+#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
+	u32 reg;
+#endif
 
 #if !defined(CONFIG_IOP480)
 	char addstr[64] = "";
@@ -526,6 +529,7 @@ int checkcpu (void)
 		strcpy(addstr, "No RAID 6 support");
 		break;
 
+#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
 	case PVR_460EX_RA:
 		puts("EX Rev. A");
 		strcpy(addstr, "No Security/Kasumi support");
@@ -536,6 +540,15 @@ int checkcpu (void)
 		strcpy(addstr, "Security/Kasumi support");
 		break;
 
+	case PVR_460EX_RB:
+		puts("EX Rev. B");
+		mfsdr(SDR0_ECID3, reg);
+		if (reg & 0x00100000)
+			strcpy(addstr, "No Security/Kasumi support");
+		else
+			strcpy(addstr, "Security/Kasumi support");
+		break;
+
 	case PVR_460GT_RA:
 		puts("GT Rev. A");
 		strcpy(addstr, "No Security/Kasumi support");
@@ -546,6 +559,16 @@ int checkcpu (void)
 		strcpy(addstr, "Security/Kasumi support");
 		break;
 
+	case PVR_460GT_RB:
+		puts("GT Rev. B");
+		mfsdr(SDR0_ECID3, reg);
+		if (reg & 0x00100000)
+			strcpy(addstr, "No Security/Kasumi support");
+		else
+			strcpy(addstr, "Security/Kasumi support");
+		break;
+#endif
+
 	case PVR_460SX_RA:
 		puts("SX Rev. A");
 		strcpy(addstr, "Security support");

include/asm-ppc/processor.h

@@ -883,8 +883,10 @@
 #define PVR_440SPe_RB	0x53521891 /* 440SPe rev B without RAID 6 support	*/
 #define PVR_460EX_SE_RA	0x130218A2 /* 460EX rev A with Security Engine	  */
 #define PVR_460EX_RA	0x130218A3 /* 460EX rev A without Security Engine */
+#define PVR_460EX_RB	0x130218A4 /* 460EX rev B with and without Sec Eng*/
 #define PVR_460GT_SE_RA	0x130218A0 /* 460GT rev A with Security Engine	  */
 #define PVR_460GT_RA	0x130218A1 /* 460GT rev A without Security Engine */
+#define PVR_460GT_RB	0x130218A5 /* 460GT rev B with and without Sec Eng*/
 #define PVR_460SX_RA    0x13541800 /* 460SX rev A                   */
 #define PVR_460SX_RA_V1 0x13541801 /* 460SX rev A Variant 1 Security disabled */
 #define PVR_460GX_RA    0x13541802 /* 460GX rev A                   */

include/ppc440.h

@@ -1156,6 +1156,11 @@
 #define SDR0_PFC1_SIS_SCP_SEL	0x00000000	/* SCP Selected */
 #define SDR0_PFC1_SIS_IIC1_SEL	0x00020000	/* IIC1 Selected */
 
+#define SDR0_ECID0		0x0080
+#define SDR0_ECID1		0x0081
+#define SDR0_ECID2		0x0082
+#define SDR0_ECID3		0x0083
+
 /* Ethernet PLL Configuration Register (SDR0_ETH_PLL) */
 #define SDR0_ETH_PLL		0x4102
 #define SDR0_ETH_PLL_PLLLOCK	 0x80000000	/*Ethernet PLL lock indication*/