diff options
| author | Daniel Hellstrom <daniel@gaisler.com> | 2012-06-19 14:49:40 +0200 |
|---|---|---|
| committer | Daniel Hellstrom <daniel@gaisler.com> | 2015-04-17 01:10:18 +0200 |
| commit | 18564f5317731ec701dda129f095a3358ffbfbad (patch) | |
| tree | bebf0b9b542f3579805908aada7d426c982ce469 /c/src/lib/libbsp/sparc/shared | |
| parent | GRSPW: New packet based driver for SPW/SPW2/SPW2_DMA (diff) | |
| download | rtems-18564f5317731ec701dda129f095a3358ffbfbad.tar.bz2 | |
APBUART: fix GRMON -u support for older UARTs
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/uart/apbuart_cons.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/uart/apbuart_cons.c b/c/src/lib/libbsp/sparc/shared/uart/apbuart_cons.c index 2785286406..64d1b15045 100644 --- a/c/src/lib/libbsp/sparc/shared/uart/apbuart_cons.c +++ b/c/src/lib/libbsp/sparc/shared/uart/apbuart_cons.c @@ -197,18 +197,30 @@ int apbuart_init1(struct drvmgr_dev *dev) /* Clear HW regs, leave baudrate register as it is */ priv->regs->status = 0; - /* leave debug bit, and Transmitter/receiver if this is the debug UART */ + /* leave debug bit, and Transmitter/receiver if this is the debug UART. + * With old APBUARTs debug is enabled by setting LB and FL, since LB is + * not reset we can not trust is, however since FL is reset we guess + * that we are debugging old UART if both FL and LB is already set. + */ #ifdef LEON3 if (priv->regs == dbg_uart) { db = priv->regs->ctrl & (LEON_REG_UART_CTRL_DB | LEON_REG_UART_CTRL_RE | LEON_REG_UART_CTRL_TE | LEON_REG_UART_CTRL_FL | + LEON_REG_UART_CTRL_LB | LEON_REG_UART_CTRL_PE | LEON_REG_UART_CTRL_PS); } else #endif - db = priv->regs->ctrl & LEON_REG_UART_CTRL_DB; + { + if (priv->regs->ctrl & (LEON_REG_UART_CTRL_FL | + LEON_REG_UART_CTRL_LB)) + db = priv->regs->ctrl & (LEON_REG_UART_CTRL_FL | + LEON_REG_UART_CTRL_LB); + else + db = priv->regs->ctrl & LEON_REG_UART_CTRL_DB; + } priv->regs->ctrl = db; |