From db75356f14646a4bca7b712f2128435e97f55c17 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 16 Feb 2015 12:16:14 -0700 Subject: [PATCH] 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 $(ARCH), update the existing bcm2835 code to handle the minor differences, and plumb it into the ARMv7 CPU architecture. Signed-off-by: Stephen Warren --- arch/arm/cpu/armv7/Makefile | 1 + arch/arm/cpu/armv7/bcm2835/Makefile | 13 +++++++++++++ arch/arm/include/asm/arch-bcm2835/gpio.h | 5 +++++ arch/arm/include/asm/arch-bcm2835/mbox.h | 6 +++++- arch/arm/include/asm/arch-bcm2835/sdhci.h | 6 +++++- arch/arm/include/asm/arch-bcm2835/timer.h | 6 +++++- arch/arm/include/asm/arch-bcm2835/wdog.h | 6 +++++- 7 files changed, 39 insertions(+), 4 deletions(-) create mode 100644 arch/arm/cpu/armv7/bcm2835/Makefile diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile index 1a76982d6e..b228ed6a2e 100644 --- a/arch/arm/cpu/armv7/Makefile +++ b/arch/arm/cpu/armv7/Makefile @@ -39,6 +39,7 @@ endif obj-$(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 0000000000..ed1ee4753d --- /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 db42896201..c8ef8f528a 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 * + * (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 88d2ec11a7..c4bbacaf3c 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 da4d5cd5a8..2a21ccbf66 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 2d7cfe5c56..fc7aec7b7c 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 f369ab589c..beb6a08206 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]; -- 2.39.5