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authorAntony Pavlov <antonynpavlov@gmail.com>2014-12-27 02:56:24 +0300
committerSascha Hauer <s.hauer@pengutronix.de>2015-01-05 12:33:53 +0100
commitbe7bbf30dc6e51e09422ba71154e6f64add2f9bb (patch)
tree0122517d284b8c1353898effe8a8618fea9c4541 /arch/arm
parentc79d68bd169113600ed0b3edc3b78700995a73f5 (diff)
downloadbarebox-be7bbf30dc6e51e09422ba71154e6f64add2f9bb.tar.gz
barebox-be7bbf30dc6e51e09422ba71154e6f64add2f9bb.tar.xz
ARM: introduce debug_ll_pl011.h
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/include/asm/debug_ll_pl011.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/include/asm/debug_ll_pl011.h b/arch/arm/include/asm/debug_ll_pl011.h
new file mode 100644
index 0000000000..db015a373b
--- /dev/null
+++ b/arch/arm/include/asm/debug_ll_pl011.h
@@ -0,0 +1,25 @@
+#ifndef __INCLUDE_ARM_ASM_DEBUG_LL_PL011_H__
+#define __INCLUDE_ARM_ASM_DEBUG_LL_PL011_H__
+
+#ifndef DEBUG_LL_UART_ADDR
+#error DEBUG_LL_UART_ADDR is undefined!
+#endif
+
+#include <io.h>
+#include <linux/amba/serial.h>
+
+static inline void PUTC_LL(char c)
+{
+ /* Wait until there is space in the FIFO */
+ while (readl(DEBUG_LL_UART_ADDR + UART01x_FR) & UART01x_FR_TXFF)
+ ;
+
+ /* Send the character */
+ writel(c, DEBUG_LL_UART_ADDR + UART01x_DR);
+
+ /* Wait to make sure it hits the line, in case we die too soon. */
+ while (readl(DEBUG_LL_UART_ADDR + UART01x_FR) & UART01x_FR_TXFF)
+ ;
+}
+
+#endif /* __INCLUDE_ARM_ASM_DEBUG_LL_PL011_H__ */