GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/arch/arm/cpu/armv7/kona-common/Makefile

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright 2013 Broadcom Corporation.
+
+obj-y	+= s_init.o
+obj-y	+= hwinit-common.o
+obj-y	+= clk-stubs.o
+obj-${CONFIG_KONA_RESET_S} += reset.o

source/bootloader/u-boot-2020.01/arch/arm/cpu/armv7/kona-common/clk-stubs.c

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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2013 Broadcom Corporation.
+ */
+
+#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;
+}
+
+int __weak clk_usb_otg_enable(void *base)
+{
+	return 0;
+}

source/bootloader/u-boot-2020.01/arch/arm/cpu/armv7/kona-common/hwinit-common.c

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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2013 Broadcom Corporation.
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <linux/sizes.h>
+
+#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
+void enable_caches(void)
+{
+	/* Enable D-cache. I-cache is already enabled in start.S */
+	dcache_enable();
+}
+#endif

source/bootloader/u-boot-2020.01/arch/arm/cpu/armv7/kona-common/reset.S

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+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2013 Broadcom Corporation.
+ */
+
+.globl reset_cpu
+reset_cpu:
+	ldr	r1, =0x35001f00
+	ldr	r2, [r1]
+	ldr	r4, =0x80000000
+	and	r4, r2, r4
+	ldr	r3, =0xA5A500
+	orr	r4, r4, r3
+	orr	r4, r4, #0x1
+
+	str	r4, [r1]
+
+	ldr	r1, =0x35001f04
+	ldr	r2, [r1]
+	ldr	r4, =0x80000000
+	and	r4, r2, r4
+	str	r4, [r1]
+
+_loop_forever:
+	b	_loop_forever

source/bootloader/u-boot-2020.01/arch/arm/cpu/armv7/kona-common/s_init.c

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2014 Broadcom Corporation.
+ */
+
+/*
+ * Early system init. Currently empty.
+ */
+void s_init(void)
+{
+}