diff options
| -rw-r--r-- | arch/arm/mach-ixp4xx/common.c | 8 | ||||
| -rw-r--r-- | include/asm-arm/arch-ixp4xx/debug-macro.S | 1 | ||||
| -rw-r--r-- | include/asm-arm/arch-ixp4xx/ixp4xx-regs.h | 10 |
3 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c index 267ba02..f39e8408 100644 --- a/arch/arm/mach-ixp4xx/common.c +++ b/arch/arm/mach-ixp4xx/common.c @@ -141,7 +141,15 @@ static struct map_desc ixp4xx_io_desc[] __initdata = { .physical = IXP4XX_PCI_CFG_BASE_PHYS, .length = IXP4XX_PCI_CFG_REGION_SIZE, .type = MT_DEVICE + }, +#ifdef CONFIG_DEBUG_LL + { /* Debug UART mapping */ + .virtual = IXP4XX_DEBUG_UART_BASE_VIRT, + .physical = IXP4XX_DEBUG_UART_BASE_PHYS, + .length = IXP4XX_DEBUG_UART_REGION_SIZE, + .type = MT_DEVICE } +#endif }; void __init ixp4xx_map_io(void) diff --git a/include/asm-arm/arch-ixp4xx/debug-macro.S b/include/asm-arm/arch-ixp4xx/debug-macro.S index 4499ae8..45a6c6c 100644 --- a/include/asm-arm/arch-ixp4xx/debug-macro.S +++ b/include/asm-arm/arch-ixp4xx/debug-macro.S @@ -14,6 +14,7 @@ mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? moveq \rx, #0xc8000000 + orrne \rx, \rx, #0x00b00000 movne \rx, #0xff000000 add \rx,\rx,#3 @ Uart regs are at off set of 3 if @ byte writes used - Big Endian. diff --git a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h index 8eeb1db..004696a 100644 --- a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h +++ b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h @@ -69,6 +69,16 @@ #define IXP4XX_PERIPHERAL_BASE_VIRT (0xFFBF2000) #define IXP4XX_PERIPHERAL_REGION_SIZE (0x0000C000) +/* + * Debug UART + * + * This is basically a remap of UART1 into a region that is section + * aligned so that it * can be used with the low-level debug code. + */ +#define IXP4XX_DEBUG_UART_BASE_PHYS (0xC8000000) +#define IXP4XX_DEBUG_UART_BASE_VIRT (0xffb00000) +#define IXP4XX_DEBUG_UART_REGION_SIZE (0x00001000) + #define IXP4XX_EXP_CS0_OFFSET 0x00 #define IXP4XX_EXP_CS1_OFFSET 0x04 #define IXP4XX_EXP_CS2_OFFSET 0x08 |