[src/trunk]: src/sys/dev/fdt Make consinit actually work

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

details:   https://anonhg.NetBSD.org/src/rev/8e8824c64665
branches:  trunk
changeset: 936038:8e8824c64665
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Thu Jul 16 16:38:40 2020 +0000

description:
Make consinit actually work

diffstat:

 sys/dev/fdt/ns8250_uart.c |  19 +++++++++++++++----
 1 files changed, 15 insertions(+), 4 deletions(-)

diffs (49 lines):

diff -r 124f3943487d -r 8e8824c64665 sys/dev/fdt/ns8250_uart.c
--- a/sys/dev/fdt/ns8250_uart.c Thu Jul 16 15:02:08 2020 +0000
+++ b/sys/dev/fdt/ns8250_uart.c Thu Jul 16 16:38:40 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ns8250_uart.c,v 1.1 2020/07/16 11:42:53 jmcneill Exp $ */
+/* $NetBSD: ns8250_uart.c,v 1.2 2020/07/16 16:38:40 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2017-2020 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -28,7 +28,7 @@
 
 #include <sys/cdefs.h>
 
-__KERNEL_RCSID(1, "$NetBSD: ns8250_uart.c,v 1.1 2020/07/16 11:42:53 jmcneill Exp $");
+__KERNEL_RCSID(1, "$NetBSD: ns8250_uart.c,v 1.2 2020/07/16 16:38:40 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -187,9 +187,12 @@
 ns8250_uart_console_consinit(struct fdt_attach_args *faa, u_int uart_freq)
 {
        const int phandle = faa->faa_phandle;
-       bus_space_tag_t bst = faa->faa_a4x_bst;
+       bus_space_tag_t bst = faa->faa_bst;
+       bus_space_handle_t dummy_bsh;
+       struct com_regs regs;
        bus_addr_t addr;
        tcflag_t flags;
+       u_int reg_shift;
        int speed;
 
        const struct ns8250_config *config =
@@ -201,7 +204,15 @@
                speed = 115200; /* default */
        flags = fdtbus_get_stdout_flags();
 
-       if (comcnattach(bst, addr, speed, uart_freq, config->type, flags))
+       if (of_getprop_uint32(phandle, "reg-shift", &reg_shift)) {
+               /* missing or bad reg-shift property, assume 0 */
+               reg_shift = 0;
+       }
+
+       memset(&dummy_bsh, 0, sizeof(dummy_bsh));
+       com_init_regs_stride(&regs, bst, dummy_bsh, addr, reg_shift);
+
+       if (comcnattach1(&regs, speed, uart_freq, config->type, flags))
                panic("Cannot initialize ns8250 console");
 }