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Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-davinci/include/mach/uncompress.h19
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/arm/mach-davinci/include/mach/uncompress.h b/arch/arm/mach-davinci/include/mach/uncompress.h
index 8c165def37b..1e27475f9a2 100644
--- a/arch/arm/mach-davinci/include/mach/uncompress.h
+++ b/arch/arm/mach-davinci/include/mach/uncompress.h
@@ -13,11 +13,24 @@
#include <linux/serial_reg.h>
#include <mach/serial.h>
+#include <asm/mach-types.h>
+
+extern unsigned int __machine_arch_type;
+
+static u32 *uart;
+
+static u32 *get_uart_base(void)
+{
+ /* Add logic here for new platforms, using __macine_arch_type */
+ return (u32 *)DAVINCI_UART0_BASE;
+}
+
/* PORT_16C550A, in polled non-fifo mode */
static void putc(char c)
{
- volatile u32 *uart = (volatile void *) DAVINCI_UART0_BASE;
+ if (!uart)
+ uart = get_uart_base();
while (!(uart[UART_LSR] & UART_LSR_THRE))
barrier();
@@ -26,7 +39,9 @@ static void putc(char c)
static inline void flush(void)
{
- volatile u32 *uart = (volatile void *) DAVINCI_UART0_BASE;
+ if (!uart)
+ uart = get_uart_base();
+
while (!(uart[UART_LSR] & UART_LSR_THRE))
barrier();
}