board: add blackfin gdb simulator support

With this config you can bootup a Linux kernel
in GDB simulator and test Blackfin kernel and
userland.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

board/gdb/bfin-bf512/linux-4.6.config

@@ -0,0 +1,87 @@
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SYSVIPC=y
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_RD_GZIP is not set
+# CONFIG_RD_BZIP2 is not set
+# CONFIG_RD_LZMA is not set
+# CONFIG_RD_XZ is not set
+# CONFIG_RD_LZO is not set
+# CONFIG_RD_LZ4 is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+# CONFIG_UID16 is not set
+# CONFIG_SGETMASK_SYSCALL is not set
+# CONFIG_SYSFS_SYSCALL is not set
+# CONFIG_KALLSYMS is not set
+# CONFIG_BUG is not set
+# CONFIG_BASE_FULL is not set
+# CONFIG_ADVISE_SYSCALLS is not set
+# CONFIG_MEMBARRIER is not set
+CONFIG_EMBEDDED=y
+# CONFIG_VM_EVENT_COUNTERS is not set
+# CONFIG_SLUB_DEBUG is not set
+# CONFIG_COMPAT_BRK is not set
+CONFIG_MODULES=y
+# CONFIG_BLOCK is not set
+CONFIG_BF512=y
+# CONFIG_SET_GENERIC_CLOCKEVENTS is not set
+# CONFIG_I_ENTRY_L1 is not set
+# CONFIG_EXCPT_IRQ_SYSC_L1 is not set
+# CONFIG_DO_IRQ_L1 is not set
+# CONFIG_CORE_TIMER_IRQ_L1 is not set
+# CONFIG_IDLE_L1 is not set
+# CONFIG_SCHEDULE_L1 is not set
+# CONFIG_ARITHMETIC_OPS_L1 is not set
+# CONFIG_ACCESS_OK_L1 is not set
+# CONFIG_MEMSET_L1 is not set
+# CONFIG_MEMCPY_L1 is not set
+# CONFIG_STRCMP_L1 is not set
+# CONFIG_STRNCMP_L1 is not set
+# CONFIG_STRCPY_L1 is not set
+# CONFIG_STRNCPY_L1 is not set
+# CONFIG_SYS_BFIN_SPINLOCK_L1 is not set
+# CONFIG_CACHELINE_ALIGNED_L1 is not set
+# CONFIG_DCACHE_FLUSH_L1 is not set
+# CONFIG_APP_STACK_L1 is not set
+# CONFIG_BFIN_INS_LOWOVERHEAD is not set
+# CONFIG_BFIN_ICACHE is not set
+# CONFIG_BFIN_DCACHE is not set
+# CONFIG_C_AMCKEN is not set
+CONFIG_BINFMT_ELF_FDPIC=y
+CONFIG_BINFMT_FLAT=y
+# CONFIG_COREDUMP is not set
+# CONFIG_SUSPEND is not set
+# CONFIG_UEVENT_HELPER is not set
+# CONFIG_STANDALONE is not set
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+# CONFIG_FW_LOADER is not set
+# CONFIG_ALLOW_DEV_COREDUMP is not set
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_LEGACY_PTYS is not set
+CONFIG_SERIAL_BFIN=y
+CONFIG_SERIAL_BFIN_CONSOLE=y
+CONFIG_SERIAL_BFIN_UART0=y
+CONFIG_SERIAL_BFIN_UART1=y
+# CONFIG_BFIN_OTP is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_HWMON is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MANDATORY_FILE_LOCKING is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NLS=y
+CONFIG_NLS_DEFAULT="utf-8"
+CONFIG_PRINTK_TIME=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+# CONFIG_ENABLE_MUST_CHECK is not set
+# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_FTRACE is not set
+# CONFIG_DEBUG_VERBOSE is not set
+# CONFIG_DEBUG_HUNT_FOR_ZERO is not set
+# CONFIG_DEBUG_BFIN_HWTRACE_ON is not set
+CONFIG_EARLY_PRINTK=y
+# CONFIG_ACCESS_CHECK is not set
+# CONFIG_CRC32 is not set

board/gdb/bfin-bf512/readme.txt

@@ -0,0 +1,11 @@
+Run the simulation with GDB for FDPIC:
+
+ ./output/host/usr/bin/bfin-buildroot-linux-uclibc-run --env operating --model bf512 output/images/vmlinux
+
+Run the simulation with GDB for FLAT:
+
+ ./output/host/usr/bin/bfin-buildroot-uclinux-uclibc-run --env operating --model bf512 output/images/vmlinux
+
+The login prompt will appear in the terminal that started GDB.
+
+Tested with GDB 7.9

board/gdb/post-build.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+# no simulated network devices at the moment
+rm -f ${TARGET_DIR}/etc/init.d/S40network
+rm -rf ${TARGET_DIR}/etc/network/