[U-Boot] [PATCH 1/6] arch: kona: Initial commit of kona-common architecture code
Darwin Rambo
drambo at broadcom.com
Mon Jan 27 19:53:25 CET 2014
The Kona architecture is present on a number of Broadcom mobile SoCs
including the bcm281xx family of chips.
Signed-off-by: Darwin Rambo <drambo at broadcom.com>
Reviewed-by: Steve Rae <srae at broadcom.com>
Reviewed-by: Tim Kryger <tkryger at 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
--
1.7.9.5
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