The Kona architecture is present on a number of Broadcom mobile SoCs including the bcm281xx family of chips.
Signed-off-by: Darwin Rambo drambo@broadcom.com Reviewed-by: Steve Rae srae@broadcom.com Reviewed-by: Tim Kryger tkryger@linaro.org --- arch/arm/cpu/armv7/Makefile | 1 + arch/arm/cpu/armv7/kona-common/Makefile | 10 ++++++++ arch/arm/cpu/armv7/kona-common/clk-stubs.c | 22 +++++++++++++++++ arch/arm/cpu/armv7/kona-common/hwinit-common.c | 18 ++++++++++++++ arch/arm/cpu/armv7/kona-common/lowlevel_init.S | 15 ++++++++++++ arch/arm/cpu/armv7/kona-common/proc.c | 20 +++++++++++++++ arch/arm/include/asm/kona-common/clk.h | 31 ++++++++++++++++++++++++ arch/arm/include/asm/kona-common/misc.h | 20 +++++++++++++++ 8 files changed, 137 insertions(+) create mode 100644 arch/arm/cpu/armv7/kona-common/Makefile create mode 100644 arch/arm/cpu/armv7/kona-common/clk-stubs.c create mode 100644 arch/arm/cpu/armv7/kona-common/hwinit-common.c create mode 100644 arch/arm/cpu/armv7/kona-common/lowlevel_init.S create mode 100644 arch/arm/cpu/armv7/kona-common/proc.c create mode 100644 arch/arm/include/asm/kona-common/clk.h create mode 100644 arch/arm/include/asm/kona-common/misc.h
diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile index 0467d00..119ebb3 100644 --- a/arch/arm/cpu/armv7/Makefile +++ b/arch/arm/cpu/armv7/Makefile @@ -23,6 +23,7 @@ obj-y += nonsec_virt.o obj-y += virt-v7.o endif
+obj-$(CONFIG_KONA) += kona-common/ obj-$(CONFIG_OMAP_COMMON) += omap-common/ obj-$(CONFIG_TEGRA) += tegra-common/
diff --git a/arch/arm/cpu/armv7/kona-common/Makefile b/arch/arm/cpu/armv7/kona-common/Makefile new file mode 100644 index 0000000..9a7c167 --- /dev/null +++ b/arch/arm/cpu/armv7/kona-common/Makefile @@ -0,0 +1,10 @@ +# +# Copyright 2013 Broadcom Corporation. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y += clk-stubs.o +obj-y += hwinit-common.o +obj-y += proc.o +obj-y += lowlevel_init.o diff --git a/arch/arm/cpu/armv7/kona-common/clk-stubs.c b/arch/arm/cpu/armv7/kona-common/clk-stubs.c new file mode 100644 index 0000000..dd3ce34 --- /dev/null +++ b/arch/arm/cpu/armv7/kona-common/clk-stubs.c @@ -0,0 +1,22 @@ +/***************************************************************************** +* +* Copyright 2013 Broadcom Corporation. All rights reserved. +* +* SPDX-License-Identifier: GPL-2.0+ +* +*****************************************************************************/ + +#include <common.h> + +/* + * These weak functions are available to kona architectures that don't + * require clock enables from the driver code. + */ +int __weak clk_sdio_enable(void *base, u32 rate, u32 *actual_ratep) +{ + return 0; +} +int __weak clk_bsc_enable(void *base, u32 rate, u32 *actual_ratep) +{ + return 0; +} diff --git a/arch/arm/cpu/armv7/kona-common/hwinit-common.c b/arch/arm/cpu/armv7/kona-common/hwinit-common.c new file mode 100644 index 0000000..5d6b131 --- /dev/null +++ b/arch/arm/cpu/armv7/kona-common/hwinit-common.c @@ -0,0 +1,18 @@ +/***************************************************************************** +* +* Copyright 2013 Broadcom Corporation. All rights reserved. +* +* SPDX-License-Identifier: GPL-2.0+ +* +*****************************************************************************/ + +#include <common.h> +#include <asm/sizes.h> + +#ifndef CONFIG_SYS_DCACHE_OFF +void enable_caches(void) +{ + /* Enable D-cache. I-cache is already enabled in start.S */ + dcache_enable(); +} +#endif diff --git a/arch/arm/cpu/armv7/kona-common/lowlevel_init.S b/arch/arm/cpu/armv7/kona-common/lowlevel_init.S new file mode 100644 index 0000000..a03afcc --- /dev/null +++ b/arch/arm/cpu/armv7/kona-common/lowlevel_init.S @@ -0,0 +1,15 @@ +/***************************************************************************** +* +* Copyright 2013 Broadcom Corporation. All rights reserved. +* +* SPDX-License-Identifier: GPL-2.0+ +* +*****************************************************************************/ + +//#include <asm-offsets.h> +//#include <config.h> +//#include <linux/linkage.h> + +.globl lowlevel_init +lowlevel_init: + mov pc, lr diff --git a/arch/arm/cpu/armv7/kona-common/proc.c b/arch/arm/cpu/armv7/kona-common/proc.c new file mode 100644 index 0000000..92fb39b --- /dev/null +++ b/arch/arm/cpu/armv7/kona-common/proc.c @@ -0,0 +1,20 @@ +/***************************************************************************** +* +* Copyright 2013 Broadcom Corporation. All rights reserved. +* +* SPDX-License-Identifier: GPL-2.0+ +* +*****************************************************************************/ + +#include <common.h> +#include <asm/io.h> +#include <asm/kona-common/misc.h> +#include <asm/armv7.h> + +void do_proc_wfe(int forever) +{ + do { + asm volatile ("wfe @ wait for event\n"); + /*printf("wake up from wfe\n"); */ + } while (forever); +} diff --git a/arch/arm/include/asm/kona-common/clk.h b/arch/arm/include/asm/kona-common/clk.h new file mode 100644 index 0000000..c26c6a4 --- /dev/null +++ b/arch/arm/include/asm/kona-common/clk.h @@ -0,0 +1,31 @@ +/***************************************************************************** +* +* Copyright 2013 Broadcom Corporation. All rights reserved. +* +* SPDX-License-Identifier: GPL-2.0+ +* +*****************************************************************************/ + +/* This API file is loosely based on u-boot/drivers/video/ipu.h and linux */ + +#ifndef __KONA_COMMON_CLK_H +#define __KONA_COMMON_CLK_H + +#include <linux/types.h> + +struct clk; + +/* Only implement required functions for your specific architecture */ +int clk_init(void); +struct clk *clk_get(const char *id); +int clk_enable(struct clk *clk); +void clk_disable(struct clk *clk); +unsigned long clk_get_rate(struct clk *clk); +long clk_round_rate(struct clk *clk, unsigned long rate); +int clk_set_rate(struct clk *clk, unsigned long rate); +int clk_set_parent(struct clk *clk, struct clk *parent); +struct clk *clk_get_parent(struct clk *clk); +int clk_sdio_enable(void *base, u32 rate, u32 *actual_ratep); +int clk_bsc_enable(void *base); + +#endif diff --git a/arch/arm/include/asm/kona-common/misc.h b/arch/arm/include/asm/kona-common/misc.h new file mode 100644 index 0000000..8506bbc --- /dev/null +++ b/arch/arm/include/asm/kona-common/misc.h @@ -0,0 +1,20 @@ +/***************************************************************************** +* +* Copyright 2013 Broadcom Corporation. All rights reserved. +* +* SPDX-License-Identifier: GPL-2.0+ +* +*****************************************************************************/ + +#ifndef __KONA_COMMON_MISC_H +#define __KONA_COMMON_MISC_H + +#include <mmc.h> + +void hw_watchdog_disable(void); +int kona_sdhci_init(int dev_index, u32 min_clk, u32 quirks); +int kona_i2c_init(unsigned int dev_idx, unsigned long base_addr); + +void proc_on_wfi(void); + +#endif