From d830414e6944549343365d23d9783704833e6a5a Mon Sep 17 00:00:00 2001 From: Pavel Pisa Date: Mon, 7 Dec 2015 16:59:35 +0100 Subject: bsp/tms570: include complete peripheral initialization to SCI driver. Signed-off-by: Pavel Pisa --- c/src/lib/libbsp/arm/tms570/console/tms570-sci.c | 38 ++++++++++++++++++++++-- 1 file changed, 36 insertions(+), 2 deletions(-) (limited to 'c/src/lib/libbsp/arm/tms570/console/tms570-sci.c') diff --git a/c/src/lib/libbsp/arm/tms570/console/tms570-sci.c b/c/src/lib/libbsp/arm/tms570/console/tms570-sci.c index fac258d3b2..4464859dc0 100644 --- a/c/src/lib/libbsp/arm/tms570/console/tms570-sci.c +++ b/c/src/lib/libbsp/arm/tms570/console/tms570-sci.c @@ -95,6 +95,40 @@ rtems_device_driver console_initialize( ++minor ) { tms570_sci_context *ctx = &driver_context_table[minor]; + uint32_t rx_pin = 1 << 1; + uint32_t tx_pin = 1 << 2; + + /* Resec SCI peripheral */ + ctx->regs->GCR0 = TMS570_SCI_GCR0_RESET * 0; + ctx->regs->GCR0 = TMS570_SCI_GCR0_RESET * 1; + + /* Clear all interrupt sources */ + ctx->regs->CLEARINT = 0xffffffff; + + /* Map all interrupts to SCI INT0 line */ + ctx->regs->CLEARINTLVL = 0xffffffff; + + ctx->regs->GCR1 = TMS570_SCI_GCR1_TXENA * 0 | + TMS570_SCI_GCR1_RXENA * 0 | + TMS570_SCI_GCR1_CONT * 0 | /* continue operation when debugged */ + TMS570_SCI_GCR1_LOOP_BACK * 0 | + TMS570_SCI_GCR1_POWERDOWN * 0 | + TMS570_SCI_GCR1_SLEEP * 0 | + TMS570_SCI_GCR1_SWnRST * 0 | /* reset state */ + TMS570_SCI_GCR1_CLOCK * 1 | /* internal clock */ + TMS570_SCI_GCR1_TIMING_MODE * 1 | + TMS570_SCI_GCR1_COMM_MODE * 0; + + /* Setup connection of SCI peripheral Rx and Tx pins */ + ctx->regs->PIO0 = rx_pin * 1 | tx_pin * 1; /* Rx and Tx pins are not GPIO */ + ctx->regs->PIO3 = rx_pin * 0 | tx_pin * 0; /* Default output low */ + ctx->regs->PIO1 = rx_pin * 0 | tx_pin * 0; /* Input when not used by SCI */ + ctx->regs->PIO6 = rx_pin * 0 | tx_pin * 0; /* No open drain */ + ctx->regs->PIO7 = rx_pin * 0 | tx_pin * 0; /* Pull-up/down enabled */ + ctx->regs->PIO8 = rx_pin * 1 | tx_pin * 1; /* Select pull-up */ + + /* Bring device out of software reset */ + ctx->regs->GCR1 |= TMS570_SCI_GCR1_SWnRST; /* * Install this device in the file system and Termios. In order @@ -107,7 +141,7 @@ rtems_device_driver console_initialize( major, minor, handler, - NULL, + NULL, &ctx->base ); if ( sc != RTEMS_SUCCESSFUL ) { @@ -473,7 +507,7 @@ static bool tms570_sci_interrupt_first_open( if ( ret == false ) { return false; } - ctx->regs->SETINTLVL = 0; + /* Register Interrupt handler */ sc = rtems_interrupt_handler_install(ctx->irq, ctx->device_name, -- cgit v1.2.3