ARC: [TB10x] Add support for TB10x platform

Infrastructure required to make the Linux kernel compile and boot on the
Abilis Systems TB10x series of SOCs based on ARC700 CPUs:
  - Kmake related files (Kconfig, Makefile, tb10x_defconfig)
  - TB10x platform initialisation

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/arch/arc/include/asm/serial.h b/arch/arc/include/asm/serial.h
index 4dff5a1e4128..602b0970a764 100644
--- a/arch/arc/include/asm/serial.h
+++ b/arch/arc/include/asm/serial.h
@@ -22,4 +22,14 @@
 
 #define BASE_BAUD       (arc_get_core_freq() / 16)
 
+/*
+ * This is definitely going to break early 8250 consoles on multi-platform
+ * images but hey, it won't add any code complexity for a debug feature of
+ * one broken driver.
+ */
+#ifdef CONFIG_ARC_PLAT_TB10X
+#undef BASE_BAUD
+#define BASE_BAUD       (arc_get_core_freq() / 16 / 3)
+#endif
+
 #endif /* _ASM_ARC_SERIAL_H */