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| author | Tom Rini <trini@konsulko.com> | 2015-03-01 21:07:53 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-03-01 21:07:53 -0500 |
| commit | 1da7ce4155d0839d9d56525379493bb0f80b5330 (patch) | |
| tree | a29a93170e68b30d1a5b73a8210ddb92b5aaa3c7 /arch/arm/mach-uniphier/include/mach/debug-uart.S | |
| parent | fc834100950ab630f442aece500d8c9ccfa2b992 (diff) | |
| parent | 105a9e705efaeeac63e795e2a184b0a18db0ac5a (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot-uniphier
Diffstat (limited to 'arch/arm/mach-uniphier/include/mach/debug-uart.S')
| -rw-r--r-- | arch/arm/mach-uniphier/include/mach/debug-uart.S | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/include/mach/debug-uart.S b/arch/arm/mach-uniphier/include/mach/debug-uart.S new file mode 100644 index 0000000000..af55feed04 --- /dev/null +++ b/arch/arm/mach-uniphier/include/mach/debug-uart.S @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2014 Panasonic Corporation + * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <linux/serial_reg.h> + +#if !defined(CONFIG_DEBUG_SEMIHOSTING) +#include CONFIG_DEBUG_LL_INCLUDE +#endif + +#define BAUDRATE 115200 +#define DIV_ROUND(x, d) (((x) + ((d) / 2)) / (d)) +#define DIVISOR DIV_ROUND(UART_CLK, 16 * BAUDRATE) + + .macro init_debug_uart, ra, rb, rc + addruart \ra, \rb, \rc + mov \rb, #UART_LCR_WLEN8 + strb \rb, [\ra, #0x11] + ldr \rb, =DIVISOR + str \rb, [\ra, #0x24] + .endm |