[src/trunk]: src/sys/arch/evbarm/rpi For boards with bluetooth, use AUX UART ...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a50a4602fc3e
branches:  trunk
changeset: 826050:a50a4602fc3e
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Aug 12 11:44:26 2017 +0000

description:
For boards with bluetooth, use AUX UART for console and PLCOM for bt.

diffstat:

 sys/arch/evbarm/rpi/rpi_machdep.c |  81 +++++++++++++++++++++++++++++++++-----
 1 files changed, 70 insertions(+), 11 deletions(-)

diffs (162 lines):

diff -r e6997253719f -r a50a4602fc3e sys/arch/evbarm/rpi/rpi_machdep.c
--- a/sys/arch/evbarm/rpi/rpi_machdep.c Sat Aug 12 11:41:21 2017 +0000
+++ b/sys/arch/evbarm/rpi/rpi_machdep.c Sat Aug 12 11:44:26 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rpi_machdep.c,v 1.78 2017/08/01 00:01:56 jmcneill Exp $        */
+/*     $NetBSD: rpi_machdep.c,v 1.79 2017/08/12 11:44:26 jmcneill Exp $        */
 
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: rpi_machdep.c,v 1.78 2017/08/01 00:01:56 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: rpi_machdep.c,v 1.79 2017/08/12 11:44:26 jmcneill Exp $");
 
 #include "opt_arm_debug.h"
 #include "opt_bcm283x.h"
@@ -47,6 +47,7 @@
 #include "bcmspi.h"
 #include "bsciic.h"
 #include "plcom.h"
+#include "com.h"
 #include "genfb.h"
 #include "ukbd.h"
 
@@ -97,6 +98,10 @@
 #include <evbarm/dev/plcomvar.h>
 #endif
 
+#if NCOM > 0
+#include <dev/ic/comvar.h>
+#endif
+
 #if NGENFB > 0
 #include <dev/videomode/videomode.h>
 #include <dev/videomode/edidvar.h>
@@ -182,6 +187,7 @@
 static struct __aligned(16) {
        struct vcprop_buffer_hdr        vb_hdr;
        struct vcprop_tag_clockrate     vbt_uartclockrate;
+       struct vcprop_tag_clockrate     vbt_coreclockrate;
        struct vcprop_tag_boardrev      vbt_boardrev;
        struct vcprop_tag end;
 } vb_uart = {
@@ -197,6 +203,14 @@
                },
                .id = VCPROP_CLK_UART
        },
+       .vbt_coreclockrate = {
+               .tag = {
+                       .vpt_tag = VCPROPTAG_GET_CLOCKRATE,
+                       .vpt_len = VCPROPTAG_LEN(vb_uart.vbt_coreclockrate),
+                       .vpt_rcode = VCPROPTAG_REQUEST
+               },
+               .id = VCPROP_CLK_CORE
+       },
        .vbt_boardrev = {
                .tag = {
                        .vpt_tag = VCPROPTAG_GET_BOARDREVISION,
@@ -466,9 +480,15 @@
 
        if (vcprop_tag_success_p(&vb_uart.vbt_boardrev.tag)) {
                if (rpi_rev_has_btwifi(vb_uart.vbt_boardrev.rev)) {
+#if NCOM > 0
+                       /* Enable AUX UART on GPIO header */
+                       bcm2835gpio_function_select(14, BCM2835_GPIO_ALT5);
+                       bcm2835gpio_function_select(15, BCM2835_GPIO_ALT5);
+#else
                        /* Enable UART0 (PL011) on GPIO header */
                        bcm2835gpio_function_select(14, BCM2835_GPIO_ALT0);
                        bcm2835gpio_function_select(15, BCM2835_GPIO_ALT0);
+#endif
                }
        }
 
@@ -501,9 +521,15 @@
 #endif
 
        if (rpi_rev_has_btwifi(vb.vbt_boardrev.rev)) {
+#if NCOM > 0
+               /* Enable UART0 (PL011) on BT */
+               bcm2835gpio_function_select(32, BCM2835_GPIO_ALT3);
+               bcm2835gpio_function_select(33, BCM2835_GPIO_ALT3);
+#else
                /* Enable AUX UART on BT */
                bcm2835gpio_function_select(32, BCM2835_GPIO_ALT5);
                bcm2835gpio_function_select(33, BCM2835_GPIO_ALT5);
+#endif
                bcm2835gpio_function_setpull(32, BCM2835_GPIO_GPPUD_PULLOFF);
                bcm2835gpio_function_setpull(33, BCM2835_GPIO_GPPUD_PULLUP);
                bcm2835gpio_function_select(43, BCM2835_GPIO_ALT0);
@@ -814,16 +840,9 @@
        return initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, NULL, 0);
 }
 
-void
-consinit(void)
+static void
+consinit_plcom(void)
 {
-       static int consinit_called = 0;
-
-       if (consinit_called != 0)
-               return;
-
-       consinit_called = 1;
-
 #if (NPLCOM > 0 && defined(PLCONSOLE))
        /*
         * Initialise the diagnostic serial console
@@ -833,10 +852,50 @@
 
        plcomcnattach(&rpi_pi, plcomcnspeed, uart_clk,
            plcomcnmode, PLCOMCNUNIT);
+#endif
+}
 
+static void
+consinit_com(void)
+{
+#if NCOM > 0
+       bus_space_tag_t iot = &bcm2835_a4x_bs_tag;
+       const bus_addr_t addr = BCM2835_AUX_UART_BASE;
+       const int speed = B115200;
+       u_int freq = 0;
+       const u_int flags = TTYDEF_CFLAG;
+
+       if (vcprop_tag_success_p(&vb_uart.vbt_coreclockrate.tag))
+               freq = vb.vbt_coreclockrate.rate * 2;
+
+       comcnattach(iot, addr, speed, freq, COM_TYPE_BCMAUXUART, flags);
 #endif
 }
 
+void
+consinit(void)
+{
+       static int consinit_called = 0;
+       bool use_auxuart = false;
+
+       if (consinit_called != 0)
+               return;
+
+       consinit_called = 1;
+
+#if NCOM > 0
+       if (vcprop_tag_success_p(&vb_uart.vbt_boardrev.tag) &&
+           rpi_rev_has_btwifi(vb_uart.vbt_boardrev.rev)) {
+               use_auxuart = true;
+       }
+#endif
+
+       if (use_auxuart)
+               consinit_com();
+       else
+               consinit_plcom();
+}
+
 #ifdef KGDB
 #if !defined(KGDB_PLCOMUNIT) || !defined(KGDB_DEVRATE) || !defined(KGDB_CONMODE)
 #error Specify KGDB_PLCOMUNIT, KGDB_DEVRATE and KGDB_CONMODE for KGDB.