86xx: Add support for 'cpu disable' command

Support disabling of a core via user command 'cpu disable'.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

cpu/mpc86xx/mp.c

@@ -48,8 +48,22 @@ int cpu_status(int nr)
 
 int cpu_disable(int nr)
 {
-	/* dummy function so common/cmd_mp.c will build */
-	return 1;
+	volatile immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR;
+	volatile ccsr_gur_t *gur = &immap->im_gur;
+
+	switch (nr) {
+	case 0:
+		setbits_be32(&gur->devdisr, MPC86xx_DEVDISR_CPU0);
+		break;
+	case 1:
+		setbits_be32(&gur->devdisr, MPC86xx_DEVDISR_CPU1);
+		break;
+	default:
+		printf("Invalid cpu number for disable %d\n", nr);
+		return 1;
+	}
+
+	return 0;
 }
 
 int cpu_release(int nr, int argc, char *argv[])

include/asm-ppc/immap_86xx.h

@@ -1186,17 +1186,8 @@ typedef struct ccsr_rio {
 typedef struct ccsr_gur {
 	uint	porpllsr;	/* 0xe0000 - POR PLL ratio status register */
 	uint	porbmsr;	/* 0xe0004 - POR boot mode status register */
-#define MPC8610_PORBMSR_HA      0x00070000
-#define MPC8610_PORBMSR_HA_SHIFT	16
-#define MPC8641_PORBMSR_HA      0x00060000
-#define MPC8641_PORBMSR_HA_SHIFT	17
 	uint	porimpscr;	/* 0xe0008 - POR I/O impedance status and control register */
 	uint	pordevsr;	/* 0xe000c - POR I/O device status regsiter */
-#define MPC8610_PORDEVSR_IO_SEL		0x00380000
-#define MPC8610_PORDEVSR_IO_SEL_SHIFT		19
-#define MPC8641_PORDEVSR_IO_SEL		0x000F0000
-#define MPC8641_PORDEVSR_IO_SEL_SHIFT		16
-#define MPC86xx_PORDEVSR_CORE1TE	0x00000080 /* ASMP (Core1 addr trans) */
 	uint	pordbgmsr;	/* 0xe0010 - POR debug mode status register */
 	char	res1[12];
 	uint	gpporcr;	/* 0xe0020 - General-purpose POR configuration register */
@@ -1210,11 +1201,6 @@ typedef struct ccsr_gur {
 	uint	pmuxcr;		/* 0xe0060 - Alternate function signal multiplex control */
 	char	res6[12];
 	uint	devdisr;	/* 0xe0070 - Device disable control */
-#define MPC86xx_DEVDISR_PCIEX1	0x80000000
-#define MPC86xx_DEVDISR_PCIEX2	0x40000000
-#define MPC86xx_DEVDISR_PCI1	0x80000000
-#define MPC86xx_DEVDISR_PCIE1	0x40000000
-#define MPC86xx_DEVDISR_PCIE2	0x20000000
 	char	res7[12];
 	uint	powmgtcsr;	/* 0xe0080 - Power management status and control register */
 	char	res8[12];
@@ -1225,7 +1211,6 @@ typedef struct ccsr_gur {
 	uint	svr;		/* 0xe00a4 - System version register */
 	char	res10a[8];
 	uint	rstcr;		/* 0xe00b0 - Reset control register */
-#define MPC86xx_RSTCR_HRST_REQ	0x00000002
 	char	res10b[1868];
 	uint	clkdvdr;	/* 0xe0800 - Clock Divide register */
 	char	res10c[796];
@@ -1250,6 +1235,24 @@ typedef struct ccsr_gur {
 	char	res16[184];
 } ccsr_gur_t;
 
+#define MPC8610_PORBMSR_HA      0x00070000
+#define MPC8610_PORBMSR_HA_SHIFT	16
+#define MPC8641_PORBMSR_HA      0x00060000
+#define MPC8641_PORBMSR_HA_SHIFT	17
+#define MPC8610_PORDEVSR_IO_SEL		0x00380000
+#define MPC8610_PORDEVSR_IO_SEL_SHIFT		19
+#define MPC8641_PORDEVSR_IO_SEL		0x000F0000
+#define MPC8641_PORDEVSR_IO_SEL_SHIFT		16
+#define MPC86xx_PORDEVSR_CORE1TE	0x00000080 /* ASMP (Core1 addr trans) */
+#define MPC86xx_DEVDISR_PCIEX1	0x80000000
+#define MPC86xx_DEVDISR_PCIEX2	0x40000000
+#define MPC86xx_DEVDISR_PCI1	0x80000000
+#define MPC86xx_DEVDISR_PCIE1	0x40000000
+#define MPC86xx_DEVDISR_PCIE2	0x20000000
+#define MPC86xx_DEVDISR_CPU0	0x00008000
+#define MPC86xx_DEVDISR_CPU1	0x00004000
+#define MPC86xx_RSTCR_HRST_REQ	0x00000002
+
 /*
  * Watchdog register block(0xe_4000-0xe_4fff)
  */