diff options
Diffstat (limited to 'arch/arm/mach-tegra/include/mach/uncompress.h')
| -rw-r--r-- | arch/arm/mach-tegra/include/mach/uncompress.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/arm/mach-tegra/include/mach/uncompress.h b/arch/arm/mach-tegra/include/mach/uncompress.h index 6c087b6974b2..b066ba0ee3c3 100644 --- a/arch/arm/mach-tegra/include/mach/uncompress.h +++ b/arch/arm/mach-tegra/include/mach/uncompress.h @@ -3,7 +3,7 @@ * * Copyright (C) 2010 Google, Inc. * Copyright (C) 2011 Google, Inc. - * Copyright (C) 2011 NVIDIA CORPORATION. All Rights Reserved. + * Copyright (C) 2011-2012 NVIDIA CORPORATION. All Rights Reserved. * * Author: * Colin Cross <ccross@google.com> @@ -30,6 +30,7 @@ #include <linux/serial_reg.h> #include <mach/iomap.h> +#include <mach/irammap.h> #define DEBUG_UART_SHIFT 2 @@ -49,6 +50,17 @@ static inline void flush(void) { } +static inline void save_uart_address(void) +{ + u32 *buf = (u32 *)(TEGRA_IRAM_BASE + TEGRA_IRAM_DEBUG_UART_OFFSET); + + if (uart) { + buf[0] = TEGRA_IRAM_DEBUG_UART_COOKIE; + buf[1] = (u32)uart; + } else + buf[0] = 0; +} + /* * Setup before decompression. This is where we do UART selection for * earlyprintk and init the uart_base register. @@ -125,6 +137,7 @@ static inline void arch_decomp_setup(void) } if (i == ARRAY_SIZE(uarts)) uart = (volatile u8 *)TEGRA_DEBUG_UART_BASE; + save_uart_address(); if (uart == NULL) return; |
