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ARM: 7793/1: debug: use generic option for ep93xx PL10x debug port 

The generic option DEBUG_LL_UART_PL01X is now used to select the UART
type for the kernel low-level debugging on the ep93xx platform. This
enables two config options to provide the physical and virtual base
address of the debug UART.

Use the generic options instead of providing platform specific options
to select the debug UART.

UART1 is selected with:  DEBUG_UART_PHYS = 0x808c0000
                         DEBUG_UART_VIRT = 0xfedc0000

UART2 is selected with:  DEBUG_UART_PHYS = 0x808d0000
                         DEBUG_UART_VIRT = 0xfedd0000

UART3 is selected with:  DEBUG_UART_PHYS = 0x808e0000
                         DEBUG_UART_VIRT = 0xfede0000

The selected UART must already be initialized by the bootloader. If it
isn't setup nothing will appear (which might be desired).

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ryan Mallon <rmallon@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Hartley Sweeten 2013-07-26 18:28:27 +01:00 committed by Russell King
parent 0dc0e475c5
commit d2c215aac5
2 changed files with 2 additions and 26 deletions
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14
arch/arm/mach-ep93xx/Kconfig
View File

@ -194,20 +194,6 @@ config MACH_VISION_EP9307
Say 'Y' here if you want your kernel to support the
Vision Engraving Systems EP9307 SoM.
choice
prompt "Select a UART for early kernel messages"
config EP93XX_EARLY_UART1
bool "UART1"
config EP93XX_EARLY_UART2
bool "UART2"
config EP93XX_EARLY_UART3
bool "UART3"
endchoice
endmenu
endif

14
arch/arm/mach-ep93xx/include/mach/uncompress.h
View File

@ -31,18 +31,8 @@ static void __raw_writel(unsigned int value, unsigned int ptr)
*((volatile unsigned int *)ptr) = value;
}
#if defined(CONFIG_EP93XX_EARLY_UART1)
#define UART_BASE EP93XX_UART1_PHYS_BASE
#elif defined(CONFIG_EP93XX_EARLY_UART2)
#define UART_BASE EP93XX_UART2_PHYS_BASE
#elif defined(CONFIG_EP93XX_EARLY_UART3)
#define UART_BASE EP93XX_UART3_PHYS_BASE
#else
#define UART_BASE EP93XX_UART1_PHYS_BASE
#endif
#define PHYS_UART_DATA (UART_BASE + 0x00)
#define PHYS_UART_FLAG (UART_BASE + 0x18)
#define PHYS_UART_DATA (CONFIG_DEBUG_UART_PHYS + 0x00)
#define PHYS_UART_FLAG (CONFIG_DEBUG_UART_PHYS + 0x18)
#define UART_FLAG_TXFF 0x20
static inline void putc(int c)