diff options
| -rw-r--r-- | arch/arm/cpu/armv7/tegra2/board.c | 51 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-tegra2/board.h | 30 |
2 files changed, 81 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/tegra2/board.c b/arch/arm/cpu/armv7/tegra2/board.c index 803ddc1..ea06570 100644 --- a/arch/arm/cpu/armv7/tegra2/board.c +++ b/arch/arm/cpu/armv7/tegra2/board.c @@ -24,12 +24,22 @@ #include <common.h> #include <asm/io.h> #include "ap20.h" +#include <asm/arch/clock.h> +#include <asm/arch/funcmux.h> #include <asm/arch/sys_proto.h> #include <asm/arch/tegra2.h> #include <asm/arch/pmc.h> DECLARE_GLOBAL_DATA_PTR; +enum { + /* UARTs which we can enable */ + UARTA = 1 << 0, + UARTB = 1 << 1, + UARTD = 1 << 3, + UART_COUNT = 4, +}; + /* * Boot ROM initializes the odmdata in APBDEV_PMC_SCRATCH20_0, * so we are using this value to identify memory size. @@ -90,3 +100,44 @@ int arch_cpu_init(void) return 0; } #endif + +/** + * Set up the specified uarts + * + * @param uarts_ids Mask containing UARTs to init (UARTx) + */ +static void setup_uarts(int uart_ids) +{ + static enum periph_id id_for_uart[] = { + PERIPH_ID_UART1, + PERIPH_ID_UART2, + PERIPH_ID_UART3, + PERIPH_ID_UART4, + }; + size_t i; + + for (i = 0; i < UART_COUNT; i++) { + if (uart_ids & (1 << i)) { + enum periph_id id = id_for_uart[i]; + + funcmux_select(id, 0); + clock_ll_start_uart(id); + } + } +} + +void board_init_uart_f(void) +{ + int uart_ids = 0; /* bit mask of which UART ids to enable */ + +#ifdef CONFIG_TEGRA2_ENABLE_UARTA + uart_ids |= UARTA; +#endif +#ifdef CONFIG_TEGRA2_ENABLE_UARTB + uart_ids |= UARTB; +#endif +#ifdef CONFIG_TEGRA2_ENABLE_UARTD + uart_ids |= UARTD; +#endif + setup_uarts(uart_ids); +} diff --git a/arch/arm/include/asm/arch-tegra2/board.h b/arch/arm/include/asm/arch-tegra2/board.h new file mode 100644 index 0000000..a90d36c --- /dev/null +++ b/arch/arm/include/asm/arch-tegra2/board.h @@ -0,0 +1,30 @@ +/* + * (C) Copyright 2010,2011 + * NVIDIA Corporation <www.nvidia.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _TEGRA_BOARD_H_ +#define _TEGRA_BOARD_H_ + +/* Setup UARTs for the board according to the selected config */ +void board_init_uart_f(void); + +#endif |