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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2012-11-16 16:21:27 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-11-16 16:21:27 +0100 |
| commit | 89a4150331bc07014256714678ce8e9b238fc145 (patch) | |
| tree | 3a0358208775f29f9e319b506ce849c5dbdc1a06 /arch/arm/include/debug | |
| parent | 77b67063bb6bce6d475e910d3b886a606d0d91f7 (diff) | |
| parent | 68b25325a7fd290b5e472bba0df9cbe8c1a81d8f (diff) | |
Merge remote-tracking branch 'arm-soc/imx/multiplatform' into x
Diffstat (limited to 'arch/arm/include/debug')
| -rw-r--r-- | arch/arm/include/debug/imx.S | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/include/debug/imx.S b/arch/arm/include/debug/imx.S new file mode 100644 index 000000000000..0b65d792f664 --- /dev/null +++ b/arch/arm/include/debug/imx.S @@ -0,0 +1,62 @@ +/* arch/arm/mach-imx/include/mach/debug-macro.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + * + * 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. + * + */ +#ifdef CONFIG_DEBUG_IMX1_UART +#define UART_PADDR 0x00206000 +#elif defined (CONFIG_DEBUG_IMX25_UART) +#define UART_PADDR 0x43f90000 +#elif defined (CONFIG_DEBUG_IMX21_IMX27_UART) +#define UART_PADDR 0x1000a000 +#elif defined (CONFIG_DEBUG_IMX31_IMX35_UART) +#define UART_PADDR 0x43f90000 +#elif defined (CONFIG_DEBUG_IMX51_UART) +#define UART_PADDR 0x73fbc000 +#elif defined (CONFIG_DEBUG_IMX50_IMX53_UART) +#define UART_PADDR 0x53fbc000 +#elif defined (CONFIG_DEBUG_IMX6Q_UART2) +#define UART_PADDR 0x021e8000 +#elif defined (CONFIG_DEBUG_IMX6Q_UART4) +#define UART_PADDR 0x021f0000 +#endif + +/* + * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to + * stay sync with that. It's hard to maintain, and should be fixed + * globally for multi-platform build to use a fixed virtual address + * for low-level debug uart port across platforms. + */ +#define IMX_IO_P2V(x) ( \ + (((x) & 0x80000000) >> 7) | \ + (0xf4000000 + \ + (((x) & 0x50000000) >> 6) + \ + (((x) & 0x0b000000) >> 4) + \ + (((x) & 0x000fffff)))) + +#define UART_VADDR IMX_IO_P2V(UART_PADDR) + + .macro addruart, rp, rv, tmp + ldr \rp, =UART_PADDR @ physical + ldr \rv, =UART_VADDR @ virtual + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #0x40] @ TXDATA + .endm + + .macro waituart,rd,rx + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #0x98] @ SR2 + tst \rd, #1 << 3 @ TXDC + beq 1002b @ wait until transmit done + .endm |