arm64: core support

Relocation code based on a patch by Scott Wood, which is:
Signed-off-by: Scott Wood <scottwood@freescale.com>

Signed-off-by: David Feng <fenghua@phytium.com.cn>

1 files changed, 120 insertions, 0 deletions

diff --git a/arch/arm/lib/interrupts_64.c b/arch/arm/lib/interrupts_64.c
new file mode 100644
index 0000000..b476722
--- /dev/null
+++ b/arch/arm/lib/interrupts_64.c
@@ -0,0 +1,120 @@
+/*
+ * (C) Copyright 2013
+ * David Feng <fenghua@phytium.com.cn>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/compiler.h>
+
+
+int interrupt_init(void)
+{
+	return 0;
+}
+
+void enable_interrupts(void)
+{
+	return;
+}
+
+int disable_interrupts(void)
+{
+	return 0;
+}
+
+void show_regs(struct pt_regs *regs)
+{
+	int i;
+
+	printf("ELR:     %lx\n", regs->elr);
+	printf("LR:      %lx\n", regs->regs[30]);
+	for (i = 0; i < 29; i += 2)
+		printf("x%-2d: %016lx x%-2d: %016lx\n",
+		       i, regs->regs[i], i+1, regs->regs[i+1]);
+	printf("\n");
+}
+
+/*
+ * do_bad_sync handles the impossible case in the Synchronous Abort vector.
+ */
+void do_bad_sync(struct pt_regs *pt_regs, unsigned int esr)
+{
+	printf("Bad mode in \"Synchronous Abort\" handler, esr 0x%08x\n", esr);
+	show_regs(pt_regs);
+	panic("Resetting CPU ...\n");
+}
+
+/*
+ * do_bad_irq handles the impossible case in the Irq vector.
+ */
+void do_bad_irq(struct pt_regs *pt_regs, unsigned int esr)
+{
+	printf("Bad mode in \"Irq\" handler, esr 0x%08x\n", esr);
+	show_regs(pt_regs);
+	panic("Resetting CPU ...\n");
+}
+
+/*
+ * do_bad_fiq handles the impossible case in the Fiq vector.
+ */
+void do_bad_fiq(struct pt_regs *pt_regs, unsigned int esr)
+{
+	printf("Bad mode in \"Fiq\" handler, esr 0x%08x\n", esr);
+	show_regs(pt_regs);
+	panic("Resetting CPU ...\n");
+}
+
+/*
+ * do_bad_error handles the impossible case in the Error vector.
+ */
+void do_bad_error(struct pt_regs *pt_regs, unsigned int esr)
+{
+	printf("Bad mode in \"Error\" handler, esr 0x%08x\n", esr);
+	show_regs(pt_regs);
+	panic("Resetting CPU ...\n");
+}
+
+/*
+ * do_sync handles the Synchronous Abort exception.
+ */
+void do_sync(struct pt_regs *pt_regs, unsigned int esr)
+{
+	printf("\"Synchronous Abort\" handler, esr 0x%08x\n", esr);
+	show_regs(pt_regs);
+	panic("Resetting CPU ...\n");
+}
+
+/*
+ * do_irq handles the Irq exception.
+ */
+void do_irq(struct pt_regs *pt_regs, unsigned int esr)
+{
+	printf("\"Irq\" handler, esr 0x%08x\n", esr);
+	show_regs(pt_regs);
+	panic("Resetting CPU ...\n");
+}
+
+/*
+ * do_fiq handles the Fiq exception.
+ */
+void do_fiq(struct pt_regs *pt_regs, unsigned int esr)
+{
+	printf("\"Fiq\" handler, esr 0x%08x\n", esr);
+	show_regs(pt_regs);
+	panic("Resetting CPU ...\n");
+}
+
+/*
+ * do_error handles the Error exception.
+ * Errors are more likely to be processor specific,
+ * it is defined with weak attribute and can be redefined
+ * in processor specific code.
+ */
+void __weak do_error(struct pt_regs *pt_regs, unsigned int esr)
+{
+	printf("\"Error\" handler, esr 0x%08x\n", esr);
+	show_regs(pt_regs);
+	panic("Resetting CPU ...\n");
+}