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authorStephen Warren <swarren@wwwdotorg.org>2015-02-16 12:16:14 -0700
committerTom Rini <trini@ti.com>2015-02-21 08:27:48 -0500
commitdb75356f14646a4bca7b712f2128435e97f55c17 (patch)
treed1a0f66497e2ad50fe336665f561ad5778bb028f /arch
parenta033171b2ece1f3575ab7277e7b862e7f611b3f6 (diff)
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bcm2836 SoC support (used in Raspberry Pi 2 model B)
The bcm2835 and bcm2836 are essentially identical, except: - The CPU is an ARM1176 v.s. a quad-core Cortex-A7. - The physical address of many IO controllers has moved. Rather than introducing a whole new bcm2836 value for $(SOC) or $(ARCH), update the existing bcm2835 code to handle the minor differences, and plumb it into the ARMv7 CPU architecture. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv7/Makefile1
-rw-r--r--arch/arm/cpu/armv7/bcm2835/Makefile13
-rw-r--r--arch/arm/include/asm/arch-bcm2835/gpio.h5
-rw-r--r--arch/arm/include/asm/arch-bcm2835/mbox.h6
-rw-r--r--arch/arm/include/asm/arch-bcm2835/sdhci.h6
-rw-r--r--arch/arm/include/asm/arch-bcm2835/timer.h6
-rw-r--r--arch/arm/include/asm/arch-bcm2835/wdog.h6
7 files changed, 39 insertions, 4 deletions
diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile
index 1a76982..b228ed6 100644
--- a/arch/arm/cpu/armv7/Makefile
+++ b/arch/arm/cpu/armv7/Makefile
@@ -39,6 +39,7 @@ endif
obj-$(if $(filter am33xx,$(SOC)),y) += am33xx/
obj-$(if $(filter armada-xp,$(SOC)),y) += armada-xp/
+obj-$(CONFIG_BCM2835) += bcm2835/
obj-$(if $(filter bcm281xx,$(SOC)),y) += bcm281xx/
obj-$(if $(filter bcmcygnus,$(SOC)),y) += bcmcygnus/
obj-$(if $(filter bcmnsp,$(SOC)),y) += bcmnsp/
diff --git a/arch/arm/cpu/armv7/bcm2835/Makefile b/arch/arm/cpu/armv7/bcm2835/Makefile
new file mode 100644
index 0000000..ed1ee47
--- /dev/null
+++ b/arch/arm/cpu/armv7/bcm2835/Makefile
@@ -0,0 +1,13 @@
+#
+# (C) Copyright 2012 Stephen Warren
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+src_dir := ../../arm1176/bcm2835/
+
+obj-y :=
+obj-y += $(src_dir)/init.o
+obj-y += $(src_dir)/reset.o
+obj-y += $(src_dir)/timer.o
+obj-y += $(src_dir)/mbox.o
diff --git a/arch/arm/include/asm/arch-bcm2835/gpio.h b/arch/arm/include/asm/arch-bcm2835/gpio.h
index db42896..c8ef8f5 100644
--- a/arch/arm/include/asm/arch-bcm2835/gpio.h
+++ b/arch/arm/include/asm/arch-bcm2835/gpio.h
@@ -1,6 +1,7 @@
/*
* Copyright (C) 2012 Vikram Narayananan
* <vikram186@gmail.com>
+ * (C) Copyright 2012,2015 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0+
*/
@@ -8,7 +9,11 @@
#ifndef _BCM2835_GPIO_H_
#define _BCM2835_GPIO_H_
+#ifdef CONFIG_BCM2836
+#define BCM2835_GPIO_BASE 0x3f200000
+#else
#define BCM2835_GPIO_BASE 0x20200000
+#endif
#define BCM2835_GPIO_COUNT 54
#define BCM2835_GPIO_FSEL_MASK 0x7
diff --git a/arch/arm/include/asm/arch-bcm2835/mbox.h b/arch/arm/include/asm/arch-bcm2835/mbox.h
index 88d2ec1..c4bbaca 100644
--- a/arch/arm/include/asm/arch-bcm2835/mbox.h
+++ b/arch/arm/include/asm/arch-bcm2835/mbox.h
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2012 Stephen Warren
+ * (C) Copyright 2012,2015 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0+
*/
@@ -38,7 +38,11 @@
/* Raw mailbox HW */
+#ifdef CONFIG_BCM2836
+#define BCM2835_MBOX_PHYSADDR 0x3f00b880
+#else
#define BCM2835_MBOX_PHYSADDR 0x2000b880
+#endif
struct bcm2835_mbox_regs {
u32 read;
diff --git a/arch/arm/include/asm/arch-bcm2835/sdhci.h b/arch/arm/include/asm/arch-bcm2835/sdhci.h
index da4d5cd..2a21ccb 100644
--- a/arch/arm/include/asm/arch-bcm2835/sdhci.h
+++ b/arch/arm/include/asm/arch-bcm2835/sdhci.h
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2012 Stephen Warren
+ * (C) Copyright 2012,2015 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0
*/
@@ -7,7 +7,11 @@
#ifndef _BCM2835_SDHCI_H_
#define _BCM2835_SDHCI_H_
+#ifdef CONFIG_BCM2836
+#define BCM2835_SDHCI_BASE 0x3f300000
+#else
#define BCM2835_SDHCI_BASE 0x20300000
+#endif
int bcm2835_sdhci_init(u32 regbase, u32 emmc_freq);
diff --git a/arch/arm/include/asm/arch-bcm2835/timer.h b/arch/arm/include/asm/arch-bcm2835/timer.h
index 2d7cfe5..fc7aec7 100644
--- a/arch/arm/include/asm/arch-bcm2835/timer.h
+++ b/arch/arm/include/asm/arch-bcm2835/timer.h
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2012 Stephen Warren
+ * (C) Copyright 2012,2015 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0
*/
@@ -7,7 +7,11 @@
#ifndef _BCM2835_TIMER_H
#define _BCM2835_TIMER_H
+#ifdef CONFIG_BCM2836
+#define BCM2835_TIMER_PHYSADDR 0x3f003000
+#else
#define BCM2835_TIMER_PHYSADDR 0x20003000
+#endif
struct bcm2835_timer_regs {
u32 cs;
diff --git a/arch/arm/include/asm/arch-bcm2835/wdog.h b/arch/arm/include/asm/arch-bcm2835/wdog.h
index f369ab5..beb6a08 100644
--- a/arch/arm/include/asm/arch-bcm2835/wdog.h
+++ b/arch/arm/include/asm/arch-bcm2835/wdog.h
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2012 Stephen Warren
+ * (C) Copyright 2012,2015 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0
*/
@@ -7,7 +7,11 @@
#ifndef _BCM2835_TIMER_H
#define _BCM2835_TIMER_H
+#ifdef CONFIG_BCM2836
+#define BCM2835_WDOG_PHYSADDR 0x3f100000
+#else
#define BCM2835_WDOG_PHYSADDR 0x20100000
+#endif
struct bcm2835_wdog_regs {
u32 unknown0[7];