diff options
| author | Noam Camus <noamc@ezchip.com> | 2015-05-25 05:54:28 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-31 23:55:12 +0200 |
| commit | 6e63be3fee141cc6d122f648b524a66160dbe6aa (patch) | |
| tree | d3210a5bd98d24de80fff5f44b7a9b071e2682ff /drivers/tty | |
| parent | serial: sirf: use hrtimer for data rx (diff) | |
| download | linux-6e63be3fee141cc6d122f648b524a66160dbe6aa.tar.xz linux-6e63be3fee141cc6d122f648b524a66160dbe6aa.zip | |
serial: earlycon: Add support for big-endian MMIO accesses
Support command line parameters of the form:
earlycon=<name>,io|mmio|mmio32|mmio32be,<addr>,<options>
This commit seem to be needed even after commit:
serial: 8250: Add support for big-endian MMIO accesses
c627f2ceb692e8a9358b64ac2d139314e7bb0d17
Signed-off-by: Noam Camus <noamc@ezchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/earlycon.c | 9 | ||||
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 7 |
2 files changed, 11 insertions, 5 deletions
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c index 6dc471e30e79..f09636083426 100644 --- a/drivers/tty/serial/earlycon.c +++ b/drivers/tty/serial/earlycon.c @@ -72,6 +72,7 @@ static int __init parse_options(struct earlycon_device *device, char *options) switch (port->iotype) { case UPIO_MEM32: + case UPIO_MEM32BE: port->regshift = 2; /* fall-through */ case UPIO_MEM: port->mapbase = addr; @@ -90,9 +91,11 @@ static int __init parse_options(struct earlycon_device *device, char *options) strlcpy(device->options, options, length); } - if (port->iotype == UPIO_MEM || port->iotype == UPIO_MEM32) + if (port->iotype == UPIO_MEM || port->iotype == UPIO_MEM32 || + port->iotype == UPIO_MEM32BE) pr_info("Early serial console at MMIO%s 0x%llx (options '%s')\n", - (port->iotype == UPIO_MEM32) ? "32" : "", + (port->iotype == UPIO_MEM) ? "" : + (port->iotype == UPIO_MEM32) ? "32" : "32be", (unsigned long long)port->mapbase, device->options); else @@ -133,7 +136,7 @@ static int __init register_earlycon(char *buf, const struct earlycon_id *match) * * Registers the earlycon console matching the earlycon specified * in the param string @buf. Acceptable param strings are of the form - * <name>,io|mmio|mmio32,<addr>,<options> + * <name>,io|mmio|mmio32|mmio32be,<addr>,<options> * <name>,0x<addr>,<options> * <name>,<options> * <name> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index eec067d8eedb..860e59fd6ef4 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1814,8 +1814,8 @@ uart_get_console(struct uart_port *ports, int nr, struct console *co) * @options: ptr for <options> field; NULL if not present (out) * * Decodes earlycon kernel command line parameters of the form - * earlycon=<name>,io|mmio|mmio32,<addr>,<options> - * console=<name>,io|mmio|mmio32,<addr>,<options> + * earlycon=<name>,io|mmio|mmio32|mmio32be,<addr>,<options> + * console=<name>,io|mmio|mmio32|mmio32be,<addr>,<options> * * The optional form * earlycon=<name>,0x<addr>,<options> @@ -1833,6 +1833,9 @@ int uart_parse_earlycon(char *p, unsigned char *iotype, unsigned long *addr, } else if (strncmp(p, "mmio32,", 7) == 0) { *iotype = UPIO_MEM32; p += 7; + } else if (strncmp(p, "mmio32be,", 9) == 0) { + *iotype = UPIO_MEM32BE; + p += 9; } else if (strncmp(p, "io,", 3) == 0) { *iotype = UPIO_PORT; p += 3; |