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-rw-r--r--arch/arm/include/debug/vexpress.S87
1 files changed, 87 insertions, 0 deletions
diff --git a/arch/arm/include/debug/vexpress.S b/arch/arm/include/debug/vexpress.S
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+/* arch/arm/mach-realview/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ * Copyright (C) 1994-1999 Russell King
+ * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define DEBUG_LL_PHYS_BASE 0x10000000
+#define DEBUG_LL_UART_OFFSET 0x00009000
+
+#define DEBUG_LL_PHYS_BASE_RS1 0x1c000000
+#define DEBUG_LL_UART_OFFSET_RS1 0x00090000
+
+#define DEBUG_LL_VIRT_BASE 0xf8000000
+
+#if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT)
+
+ .macro addruart,rp,rv,tmp
+ .arch armv7-a
+
+ @ Make an educated guess regarding the memory map:
+ @ - the original A9 core tile (based on ARM Cortex-A9 r0p1)
+ @ should use UART at 0x10009000
+ @ - all other (RS1 complaint) tiles use UART mapped
+ @ at 0x1c090000
+ mrc p15, 0, \rp, c0, c0, 0
+ movw \rv, #0xc091
+ movt \rv, #0x410f
+ cmp \rp, \rv
+
+ @ Original memory map
+ moveq \rp, #DEBUG_LL_UART_OFFSET
+ orreq \rv, \rp, #DEBUG_LL_VIRT_BASE
+ orreq \rp, \rp, #DEBUG_LL_PHYS_BASE
+
+ @ RS1 memory map
+ movne \rp, #DEBUG_LL_UART_OFFSET_RS1
+ orrne \rv, \rp, #DEBUG_LL_VIRT_BASE
+ orrne \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1
+
+ .endm
+
+#include <asm/hardware/debug-pl01x.S>
+
+#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_CA9)
+
+ .macro addruart,rp,rv,tmp
+ mov \rp, #DEBUG_LL_UART_OFFSET
+ orr \rv, \rp, #DEBUG_LL_VIRT_BASE
+ orr \rp, \rp, #DEBUG_LL_PHYS_BASE
+ .endm
+
+#include <asm/hardware/debug-pl01x.S>
+
+#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_RS1)
+
+ .macro addruart,rp,rv,tmp
+ mov \rp, #DEBUG_LL_UART_OFFSET_RS1
+ orr \rv, \rp, #DEBUG_LL_VIRT_BASE
+ orr \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1
+ .endm
+
+#include <asm/hardware/debug-pl01x.S>
+
+#else /* CONFIG_DEBUG_LL_UART_NONE */
+
+ .macro addruart, rp, rv, tmp
+ /* Safe dummy values */
+ mov \rp, #0
+ mov \rv, #DEBUG_LL_VIRT_BASE
+ .endm
+
+ .macro senduart,rd,rx
+ .endm
+
+ .macro waituart,rd,rx
+ .endm
+
+ .macro busyuart,rd,rx
+ .endm
+
+#endif