[sam] moving ATMEL boards to dedicated place

hardware/atmel/sam/variants/sam3s_ek/debug_scripts/gcc/sam3s_ek_flash.gdb

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+#*******************************************************
+#
+#  Connect to J-Link and debug application in flash.
+#
+
+# define 'reset' command
+define reset
+
+# Connect to the J-Link gdb server
+target remote localhost:2331
+# Reset the chip to get to a known state
+monitor reset
+
+# Select flash device
+monitor flash device = AT91SAM3S4C
+# Enable flash download and flash breakpoints
+monitor flash download = 1
+# Load the program
+load
+
+# Reset peripheral  (RSTC_CR)
+set *0x400e1400 = 0xA5000004
+
+# Initializing PC and stack pointer
+mon reg sp=(0x400000)
+set *0x400004 = *0x400004 & 0xFFFFFFFE
+mon reg pc=(0x400004)
+info reg
+
+# end of 'reset' command
+end
+

hardware/atmel/sam/variants/sam3s_ek/debug_scripts/gcc/sam3s_ek_sram.gdb

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+#*************************************************
+#
+#  Connect to J-Link and debug application in sram on SAM3S
+#
+# Note:
+#     First, users should modify Step1 and Step2 according to their project,
+#     then do Step3.
+
+# Step1: Connect to the J-Link gdb server
+define reset
+target remote localhost:2331
+monitor reset
+
+# Step2: Load file(eg. getting-started project)
+load
+
+# Step3: Reset peripheral  (RSTC_CR)
+set *0x400e1400 = 0xA5000004
+
+# Step4: Initializing PC and stack pointer
+# Modify pc value to even before writing pc register
+mon reg sp=(0x20000000)
+set *0x20000004 = *0x20000004 & 0xFFFFFFFE
+mon reg pc=(0x20000004)
+info reg
+
+end