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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2010-05-24 15:05:19 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2010-05-24 15:05:19 +0000 |
| commit | d17733ccd8ebc56809aec8dd6bb681ff6f23b673 (patch) | |
| tree | 3f74c53181b626b226660c8f6c8d6b241132532f /c/src/lib/libbsp/sparc/leon3/console/debugputs.c | |
| parent | Regenerate. (diff) | |
| download | rtems-d17733ccd8ebc56809aec8dd6bb681ff6f23b673.tar.bz2 | |
2010-05-24 Joel Sherrill <joel.sherrill@oarcorp.com>
* Makefile.am, amba/amba.c, console/console.c, console/debugputs.c,
startup/bspstart.c: Rework initialization order so AMBA bus is
scanned earlier. This lets us look for UARTs earlier and support
printk as early as bsp_start() returning.
Diffstat (limited to 'c/src/lib/libbsp/sparc/leon3/console/debugputs.c')
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/console/debugputs.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/console/debugputs.c b/c/src/lib/libbsp/sparc/leon3/console/debugputs.c index b6276930d3..2cd0d136e1 100644 --- a/c/src/lib/libbsp/sparc/leon3/console/debugputs.c +++ b/c/src/lib/libbsp/sparc/leon3/console/debugputs.c @@ -27,6 +27,38 @@ */ extern int uarts; +static int isinit = 0; + +/* + * Scan for UARTS in configuration + */ +int scan_uarts(void) +{ + int i; + amba_apb_device apbuarts[LEON3_APBUARTS]; + + if (isinit == 0) { + i = 0; + uarts = 0; + + uarts = amba_find_apbslvs( + &amba_conf, VENDOR_GAISLER, GAISLER_APBUART, apbuarts, LEON3_APBUARTS); + for(i=0; i<uarts; i++) { + LEON3_Console_Uart[i] = (volatile LEON3_UART_Regs_Map *)apbuarts[i].start; + } + + /* initialize uart 0 if present for printk */ + if ( uarts ) { + LEON3_Console_Uart[0]->ctrl |= + LEON_REG_UART_CTRL_RE | LEON_REG_UART_CTRL_TE; + LEON3_Console_Uart[0]->status = 0; + } + isinit = 1; + } + + return uarts; +} + /* * console_outbyte_polled * |