diff options
Diffstat (limited to 'arch/arm/cpu/armv7/tegra2/board.c')
| -rw-r--r-- | arch/arm/cpu/armv7/tegra2/board.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/tegra2/board.c b/arch/arm/cpu/armv7/tegra2/board.c index 59dce8f8d..ea06570bf 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. @@ -80,6 +90,54 @@ int arch_cpu_init(void) { /* Fire up the Cortex A9 */ tegra2_start(); + + /* We didn't do this init in start.S, so do it now */ + cpu_init_cp15(); + + /* Initialize essential common plls */ + clock_early_init(); + 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); +} |