MIPS: BCM63XX: add basic BCM6362 support

Add basic support for detecting and booting the BCM6362.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5009/
Acked-by: John Crispin <blogic@openwrt.org>

7 files changed, 112 insertions, 4 deletions

diff --git a/arch/mips/bcm63xx/Kconfig b/arch/mips/bcm63xx/Kconfig
index d03e8799d1cf..5639662fd503 100644
--- a/arch/mips/bcm63xx/Kconfig
+++ b/arch/mips/bcm63xx/Kconfig
@@ -25,6 +25,10 @@ config BCM63XX_CPU_6358
 	bool "support 6358 CPU"
 	select HW_HAS_PCI
 
+config BCM63XX_CPU_6362
+	bool "support 6362 CPU"
+	select HW_HAS_PCI
+
 config BCM63XX_CPU_6368
 	bool "support 6368 CPU"
 	select HW_HAS_PCI
diff --git a/arch/mips/bcm63xx/boards/board_bcm963xx.c b/arch/mips/bcm63xx/boards/board_bcm963xx.c
index 9aa7d44898ed..a9505c4867e8 100644
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -726,11 +726,11 @@ void __init board_prom_init(void)
 	u32 val;
 
 	/* read base address of boot chip select (0)
-	 * 6328 does not have MPI but boots from a fixed address
+	 * 6328/6362 do not have MPI but boot from a fixed address
 	 */
-	if (BCMCPU_IS_6328())
+	if (BCMCPU_IS_6328() || BCMCPU_IS_6362()) {
 		val = 0x18000000;
-	else {
+	} else {
 		val = bcm_mpi_readl(MPI_CSBASE_REG(0));
 		val &= MPI_CSBASE_BASE_MASK;
 	}
diff --git a/arch/mips/bcm63xx/cpu.c b/arch/mips/bcm63xx/cpu.c
index fef168d85884..79fe32df5e96 100644
--- a/arch/mips/bcm63xx/cpu.c
+++ b/arch/mips/bcm63xx/cpu.c
@@ -71,6 +71,15 @@ static const int bcm6358_irqs[] = {
 
 };
 
+static const unsigned long bcm6362_regs_base[] = {
+	__GEN_CPU_REGS_TABLE(6362)
+};
+
+static const int bcm6362_irqs[] = {
+	__GEN_CPU_IRQ_TABLE(6362)
+
+};
+
 static const unsigned long bcm6368_regs_base[] = {
 	__GEN_CPU_REGS_TABLE(6368)
 };
@@ -169,6 +178,42 @@ static unsigned int detect_cpu_clock(void)
 		return (16 * 1000000 * n1 * n2) / m1;
 	}
 
+	case BCM6362_CPU_ID:
+	{
+		unsigned int tmp, mips_pll_fcvo;
+
+		tmp = bcm_misc_readl(MISC_STRAPBUS_6362_REG);
+		mips_pll_fcvo = (tmp & STRAPBUS_6362_FCVO_MASK)
+				>> STRAPBUS_6362_FCVO_SHIFT;
+		switch (mips_pll_fcvo) {
+		case 0x03:
+		case 0x0b:
+		case 0x13:
+		case 0x1b:
+			return 240000000;
+		case 0x04:
+		case 0x0c:
+		case 0x14:
+		case 0x1c:
+			return 160000000;
+		case 0x05:
+		case 0x0e:
+		case 0x16:
+		case 0x1e:
+		case 0x1f:
+			return 400000000;
+		case 0x06:
+			return 440000000;
+		case 0x07:
+		case 0x17:
+			return 384000000;
+		case 0x15:
+		case 0x1d:
+			return 200000000;
+		default:
+			return 320000000;
+		}
+	}
 	case BCM6368_CPU_ID:
 	{
 		unsigned int tmp, p1, p2, ndiv, m1;
@@ -205,7 +250,7 @@ static unsigned int detect_memory_size(void)
 	unsigned int cols = 0, rows = 0, is_32bits = 0, banks = 0;
 	u32 val;
 
-	if (BCMCPU_IS_6328())
+	if (BCMCPU_IS_6328() || BCMCPU_IS_6362())
 		return bcm_ddr_readl(DDR_CSEND_REG) << 24;
 
 	if (BCMCPU_IS_6345()) {
@@ -297,6 +342,10 @@ void __init bcm63xx_cpu_init(void)
 		bcm63xx_regs_base = bcm6358_regs_base;
 		bcm63xx_irqs = bcm6358_irqs;
 		break;
+	case BCM6362_CPU_ID:
+		bcm63xx_regs_base = bcm6362_regs_base;
+		bcm63xx_irqs = bcm6362_irqs;
+		break;
 	case BCM6368_CPU_ID:
 		bcm63xx_regs_base = bcm6368_regs_base;
 		bcm63xx_irqs = bcm6368_irqs;
diff --git a/arch/mips/bcm63xx/irq.c b/arch/mips/bcm63xx/irq.c
index da24c2bd9b7c..c0ab3887f42e 100644
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -82,6 +82,17 @@ static void __internal_irq_unmask_64(unsigned int irq) __maybe_unused;
 #define ext_irq_cfg_reg1	PERF_EXTIRQ_CFG_REG_6358
 #define ext_irq_cfg_reg2	0
 #endif
+#ifdef CONFIG_BCM63XX_CPU_6362
+#define irq_stat_reg		PERF_IRQSTAT_6362_REG
+#define irq_mask_reg		PERF_IRQMASK_6362_REG
+#define irq_bits		64
+#define is_ext_irq_cascaded	1
+#define ext_irq_start		(BCM_6362_EXT_IRQ0 - IRQ_INTERNAL_BASE)
+#define ext_irq_end		(BCM_6362_EXT_IRQ3 - IRQ_INTERNAL_BASE)
+#define ext_irq_count		4
+#define ext_irq_cfg_reg1	PERF_EXTIRQ_CFG_REG_6362
+#define ext_irq_cfg_reg2	0
+#endif
 #ifdef CONFIG_BCM63XX_CPU_6368
 #define irq_stat_reg		PERF_IRQSTAT_6368_REG
 #define irq_mask_reg		PERF_IRQMASK_6368_REG
@@ -170,6 +181,16 @@ static void bcm63xx_init_irq(void)
 		ext_irq_end = BCM_6358_EXT_IRQ3 - IRQ_INTERNAL_BASE;
 		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6358;
 		break;
+	case BCM6362_CPU_ID:
+		irq_stat_addr += PERF_IRQSTAT_6362_REG;
+		irq_mask_addr += PERF_IRQMASK_6362_REG;
+		irq_bits = 64;
+		ext_irq_count = 4;
+		is_ext_irq_cascaded = 1;
+		ext_irq_start = BCM_6362_EXT_IRQ0 - IRQ_INTERNAL_BASE;
+		ext_irq_end = BCM_6362_EXT_IRQ3 - IRQ_INTERNAL_BASE;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6362;
+		break;
 	case BCM6368_CPU_ID:
 		irq_stat_addr += PERF_IRQSTAT_6368_REG;
 		irq_mask_addr += PERF_IRQMASK_6368_REG;
@@ -458,6 +479,7 @@ static int bcm63xx_external_irq_set_type(struct irq_data *d,
 	case BCM6338_CPU_ID:
 	case BCM6345_CPU_ID:
 	case BCM6358_CPU_ID:
+	case BCM6362_CPU_ID:
 	case BCM6368_CPU_ID:
 		if (levelsense)
 			reg |= EXTIRQ_CFG_LEVELSENSE(irq);
diff --git a/arch/mips/bcm63xx/prom.c b/arch/mips/bcm63xx/prom.c
index 10eaff458071..fd698087fbfd 100644
--- a/arch/mips/bcm63xx/prom.c
+++ b/arch/mips/bcm63xx/prom.c
@@ -36,6 +36,8 @@ void __init prom_init(void)
 		mask = CKCTL_6348_ALL_SAFE_EN;
 	else if (BCMCPU_IS_6358())
 		mask = CKCTL_6358_ALL_SAFE_EN;
+	else if (BCMCPU_IS_6362())
+		mask = CKCTL_6362_ALL_SAFE_EN;
 	else if (BCMCPU_IS_6368())
 		mask = CKCTL_6368_ALL_SAFE_EN;
 	else
diff --git a/arch/mips/bcm63xx/reset.c b/arch/mips/bcm63xx/reset.c
index 68a31bb90cbf..317931c6cf58 100644
--- a/arch/mips/bcm63xx/reset.c
+++ b/arch/mips/bcm63xx/reset.c
@@ -85,6 +85,20 @@
 #define BCM6358_RESET_PCIE	0
 #define BCM6358_RESET_PCIE_EXT	0
 
+#define BCM6362_RESET_SPI	SOFTRESET_6362_SPI_MASK
+#define BCM6362_RESET_ENET	0
+#define BCM6362_RESET_USBH	SOFTRESET_6362_USBH_MASK
+#define BCM6362_RESET_USBD	SOFTRESET_6362_USBS_MASK
+#define BCM6362_RESET_DSL	0
+#define BCM6362_RESET_SAR	SOFTRESET_6362_SAR_MASK
+#define BCM6362_RESET_EPHY	SOFTRESET_6362_EPHY_MASK
+#define BCM6362_RESET_ENETSW	SOFTRESET_6362_ENETSW_MASK
+#define BCM6362_RESET_PCM	SOFTRESET_6362_PCM_MASK
+#define BCM6362_RESET_MPI	0
+#define BCM6362_RESET_PCIE      (SOFTRESET_6362_PCIE_MASK | \
+				 SOFTRESET_6362_PCIE_CORE_MASK)
+#define BCM6362_RESET_PCIE_EXT	SOFTRESET_6362_PCIE_EXT_MASK
+
 #define BCM6368_RESET_SPI	SOFTRESET_6368_SPI_MASK
 #define BCM6368_RESET_ENET	0
 #define BCM6368_RESET_USBH	SOFTRESET_6368_USBH_MASK
@@ -119,6 +133,10 @@ static const u32 bcm6358_reset_bits[] = {
 	__GEN_RESET_BITS_TABLE(6358)
 };
 
+static const u32 bcm6362_reset_bits[] = {
+	__GEN_RESET_BITS_TABLE(6362)
+};
+
 static const u32 bcm6368_reset_bits[] = {
 	__GEN_RESET_BITS_TABLE(6368)
 };
@@ -140,6 +158,9 @@ static int __init bcm63xx_reset_bits_init(void)
 	} else if (BCMCPU_IS_6358()) {
 		reset_reg = PERF_SOFTRESET_6358_REG;
 		bcm63xx_reset_bits = bcm6358_reset_bits;
+	} else if (BCMCPU_IS_6362()) {
+		reset_reg = PERF_SOFTRESET_6362_REG;
+		bcm63xx_reset_bits = bcm6362_reset_bits;
 	} else if (BCMCPU_IS_6368()) {
 		reset_reg = PERF_SOFTRESET_6368_REG;
 		bcm63xx_reset_bits = bcm6368_reset_bits;
@@ -182,6 +203,13 @@ static const u32 bcm63xx_reset_bits[] = {
 #define reset_reg PERF_SOFTRESET_6358_REG
 #endif
 
+#ifdef CONFIG_BCM63XX_CPU_6362
+static const u32 bcm63xx_reset_bits[] = {
+	__GEN_RESET_BITS_TABLE(6362)
+};
+#define reset_reg PERF_SOFTRESET_6362_REG
+#endif
+
 #ifdef CONFIG_BCM63XX_CPU_6368
 static const u32 bcm63xx_reset_bits[] = {
 	__GEN_RESET_BITS_TABLE(6368)
diff --git a/arch/mips/bcm63xx/setup.c b/arch/mips/bcm63xx/setup.c
index 911fd7df49e5..24a24445db64 100644
--- a/arch/mips/bcm63xx/setup.c
+++ b/arch/mips/bcm63xx/setup.c
@@ -83,6 +83,9 @@ void bcm63xx_machine_reboot(void)
 	case BCM6358_CPU_ID:
 		perf_regs[0] = PERF_EXTIRQ_CFG_REG_6358;
 		break;
+	case BCM6362_CPU_ID:
+		perf_regs[0] = PERF_EXTIRQ_CFG_REG_6362;
+		break;
 	}
 
 	for (i = 0; i < 2; i++) {