diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2012-09-16 20:50:45 +0800 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2012-10-15 10:05:42 +0800 |
| commit | 6dde5ac5220b3b9c28f82f291b64eca3e5ebe80d (patch) | |
| tree | cdd1a0b89e2532a71c7270cb4c062b2f1e8ccead /arch/arm/include/debug/imx.S | |
| parent | e69dc9a91eeb0387e08d8e1d0e576c88b28902fc (diff) | |
ARM: imx: move debug macros to include/debug
Move imx debug-macro.S over to common debug macro directory. It
removes the inclusion to hardware.h by hard-coding the physical
address of uart port and copying IMX_IO_P2V from hardware.h.
Since we will need a common solution, which might use a fixed virtual
address for uart port across platforms, we make a copy of IMX_IO_P2V
here as a temporary solution to enable low-level debug for imx
multi-platform build.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/include/debug/imx.S')
| -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 |