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Date:      Mon, 1 Aug 2016 16:29:32 +0000 (UTC)
From:      "Landon J. Fuller" <landonf@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r303623 - in head/sys/mips: broadcom conf
Message-ID:  <201608011629.u71GTWOA083183@repo.freebsd.org>
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Author: landonf
Date: Mon Aug  1 16:29:32 2016
New Revision: 303623
URL: https://svnweb.freebsd.org/changeset/base/303623

Log:
  [mips/broadcom] Fetch UART console configuration from CFE.
  
  Relying on the boot loader console configuration allows us to use a
  common set of device hints for all SENTRY5 devices.
  
  Approved by:	adrian (mentor)
  Differential Revision:	https://reviews.freebsd.org/D7376

Modified:
  head/sys/mips/broadcom/uart_cpu_chipc.c
  head/sys/mips/conf/SENTRY5.hints

Modified: head/sys/mips/broadcom/uart_cpu_chipc.c
==============================================================================
--- head/sys/mips/broadcom/uart_cpu_chipc.c	Mon Aug  1 16:29:04 2016	(r303622)
+++ head/sys/mips/broadcom/uart_cpu_chipc.c	Mon Aug  1 16:29:32 2016	(r303623)
@@ -47,6 +47,12 @@ __FBSDID("$FreeBSD$");
 
 #include "bcm_socinfo.h"
 
+#ifdef CFE
+#include <dev/cfe/cfe_api.h>
+#include <dev/cfe/cfe_ioctl.h>
+#include <dev/cfe/cfe_error.h>
+#endif
+
 bus_space_tag_t uart_bus_space_io;
 bus_space_tag_t uart_bus_space_mem;
 
@@ -61,7 +67,7 @@ uart_cpu_eqres(struct uart_bas *b1, stru
 }
 
 static int
-uart_cpu_init(struct uart_devinfo *di, int uart, int baudrate)
+uart_cpu_init(struct uart_devinfo *di, u_int uart, int baudrate)
 {
 	struct bcm_socinfo	*socinfo;
 
@@ -83,6 +89,44 @@ uart_cpu_init(struct uart_devinfo *di, i
 	return (0);
 }
 
+#ifdef CFE
+static int
+uart_getenv_cfe(int devtype, struct uart_devinfo *di)
+{
+	char	device[sizeof("uartXX")];
+	int	baud, fd, len;
+	int	ret;
+	u_int	uart;
+
+	/* CFE only vends console configuration */
+	if (devtype != UART_DEV_CONSOLE)
+		return (ENODEV);
+
+	/* Fetch console device */
+	ret = cfe_getenv("BOOT_CONSOLE", device, sizeof(device));
+	if (ret != CFE_OK)
+		return (ENXIO);
+
+	/* Parse serial console unit. Fails on non-uart devices.  */
+	if (sscanf(device, "uart%u", &uart) != 1)
+		return (ENXIO);
+
+	/* Fetch device handle */
+	fd = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
+	if (fd < 0)
+		return (ENXIO);
+
+	/* Fetch serial configuration */
+	ret = cfe_ioctl(fd, IOCTL_SERIAL_GETSPEED, (unsigned char *)&baud,
+	    sizeof(baud), &len, 0);	
+	if (ret != CFE_OK)
+		baud = CHIPC_UART_BAUDRATE;
+
+	/* Initialize device info */
+	return (uart_cpu_init(di, uart, baud));
+}
+#endif /* CFE */
+
 int
 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
 {
@@ -91,12 +135,18 @@ uart_cpu_getdev(int devtype, struct uart
 	uart_bus_space_io = NULL;
 	uart_bus_space_mem = mips_bus_space_generic;
 
-	/* Check the environment. */
+#ifdef CFE
+	/* Check the CFE environment */
+	if (uart_getenv_cfe(devtype, di) == 0)
+		return (0);
+#endif /* CFE */
+
+	/* Check the kernel environment. */
 	if (uart_getenv(devtype, di, chipc_uart_class) == 0)
 		return (0);
 
 	/* Scan the device hints for the first matching device */
-	for (int i = 0; i < CHIPC_UART_MAX; i++) {
+	for (u_int i = 0; i < CHIPC_UART_MAX; i++) {
 		if (resource_int_value("uart", i, "flags", &ivar))
 			continue;
 

Modified: head/sys/mips/conf/SENTRY5.hints
==============================================================================
--- head/sys/mips/conf/SENTRY5.hints	Mon Aug  1 16:29:04 2016	(r303622)
+++ head/sys/mips/conf/SENTRY5.hints	Mon Aug  1 16:29:32 2016	(r303623)
@@ -2,6 +2,3 @@
 hint.bhnd.0.at="nexus0"
 hint.bhnd.0.maddr="0x18000000" 
 hint.bhnd.0.msize="0x00100000"
-
-# console on uart1
-hint.uart.1.flags="0x10"

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