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| author | Rob Herring <rob.herring@calxeda.com> | 2012-09-06 21:14:46 +0200 |
|---|---|---|
| committer | Rob Herring <rob.herring@calxeda.com> | 2012-09-14 16:22:03 +0200 |
| commit | 59bba2a9854a2de869440ff799d8e3dfd4779543 (patch) | |
| tree | 531ee615f891c9f52a86524b7b38b8a2af70d29c /arch/arm/include/debug/picoxcell.S | |
| parent | ARM: socfpga: move debug macros to include/debug (diff) | |
| download | linux-59bba2a9854a2de869440ff799d8e3dfd4779543.tar.xz linux-59bba2a9854a2de869440ff799d8e3dfd4779543.zip | |
ARM: picoxcell: move debug macros to include/debug
Move picoxcell debug-macro.S over to common debug macro directory.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Jamie Iles <jamie@jamieiles.com>
Diffstat (limited to 'arch/arm/include/debug/picoxcell.S')
| -rw-r--r-- | arch/arm/include/debug/picoxcell.S | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/include/debug/picoxcell.S b/arch/arm/include/debug/picoxcell.S new file mode 100644 index 000000000000..7419deb1b948 --- /dev/null +++ b/arch/arm/include/debug/picoxcell.S @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2011 Picochip Ltd., Jamie Iles + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Derived from arch/arm/mach-davinci/include/mach/debug-macro.S to use 32-bit + * accesses to the 8250. + */ +#include <linux/serial_reg.h> + +#define UART_SHIFT 2 +#define PICOXCELL_UART1_BASE 0x80230000 +#define PHYS_TO_IO(x) (((x) & 0x00ffffff) | 0xfe000000) + + .macro addruart, rp, rv, tmp + ldr \rv, =PHYS_TO_IO(PICOXCELL_UART1_BASE) + ldr \rp, =PICOXCELL_UART1_BASE + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #UART_TX << UART_SHIFT] + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT] + and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE + teq \rd, #UART_LSR_TEMT | UART_LSR_THRE + bne 1002b + .endm + + /* The UART's don't have any flow control IO's wired up. */ + .macro waituart,rd,rx + .endm |