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Groups > linux.kernel > #1311056
| From | Peter Hurley <peter@hurleysoftware.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v5 04/11] of: earlycon: Add options string handling |
| Date | 2016-01-16 22:50 +0100 |
| Message-ID | <qRGTo-1Ej-13@gated-at.bofh.it> (permalink) |
| References | <qQd74-5xe-7@gated-at.bofh.it> <qRGJI-1Au-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Pass-through any options string in the 'stdout-path' property to the
earlycon "driver" setup.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/of/fdt.c | 11 ++++++-----
drivers/tty/serial/earlycon.c | 9 +++++++--
include/linux/serial_core.h | 3 ++-
3 files changed, 15 insertions(+), 8 deletions(-)
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index ec14595..cfd3b35 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -800,7 +800,7 @@ static inline void early_init_dt_check_for_initrd(unsigned long node)
static int __init early_init_dt_scan_chosen_serial(void)
{
int offset;
- const char *p;
+ const char *p, *q, *options = NULL;
int l;
const struct earlycon_id *match;
const void *fdt = initial_boot_params;
@@ -817,11 +817,12 @@ static int __init early_init_dt_scan_chosen_serial(void)
if (!p || !l)
return -ENOENT;
- /* Remove console options if present */
- l = strchrnul(p, ':') - p;
+ q = strchrnul(p, ':');
+ if (*q != '\0')
+ options = q + 1;
/* Get the node specified by stdout-path */
- offset = fdt_path_offset_namelen(fdt, p, l);
+ offset = fdt_path_offset_namelen(fdt, p, q - p);
if (offset < 0)
return -ENODEV;
@@ -838,7 +839,7 @@ static int __init early_init_dt_scan_chosen_serial(void)
if (addr == OF_BAD_ADDR)
return -ENXIO;
- of_setup_earlycon(addr, match);
+ of_setup_earlycon(addr, match, options);
return 0;
}
return -ENODEV;
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index f4b5490..d50ed78 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -216,7 +216,8 @@ static int __init param_setup_earlycon(char *buf)
early_param("earlycon", param_setup_earlycon);
int __init of_setup_earlycon(unsigned long addr,
- const struct earlycon_id *match)
+ const struct earlycon_id *match,
+ const char *options)
{
int err;
struct uart_port *port = &early_console_dev.port;
@@ -227,8 +228,12 @@ int __init of_setup_earlycon(unsigned long addr,
port->uartclk = BASE_BAUD * 16;
port->membase = earlycon_map(addr, SZ_4K);
+ if (options) {
+ strlcpy(early_console_dev.options, options,
+ sizeof(early_console_dev.options));
+ }
earlycon_init(&early_console_dev, match->name);
- err = match->setup(&early_console_dev, NULL);
+ err = match->setup(&early_console_dev, options);
if (err < 0)
return err;
if (!early_console_dev.con->write)
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 63fdb55..62a4df0 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -359,7 +359,8 @@ extern const struct earlycon_id __earlycon_table_end[];
#define EARLYCON_DECLARE(_name, fn) OF_EARLYCON_DECLARE(_name, "", fn)
extern int setup_earlycon(char *buf);
-extern int of_setup_earlycon(unsigned long addr, const struct earlycon_id *match);
+extern int of_setup_earlycon(unsigned long addr, const struct earlycon_id *match,
+ const char *options);
struct uart_port *uart_get_console(struct uart_port *ports, int nr,
struct console *c);
--
2.7.0
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[PATCH v5 00/11] Earlycon cleanup Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:40 +0100
[PATCH v5 11/11] serial: 8250_omap: Add omap8250 earlycon Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:40 +0100
[PATCH v5 06/11] of: earlycon: Move address translation to of_setup_earlycon() Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:40 +0100
Re: [PATCH v5 06/11] of: earlycon: Move address translation to of_setup_earlycon() kbuild test robot <lkp@intel.com> - 2016-01-16 23:10 +0100
[PATCH v5 07/11] serial: earlycon: Common log banner for command line and DT Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:40 +0100
[PATCH v5 01/11] earlycon: Use common framework for earlycon declarations Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:50 +0100
[PATCH v5 05/11] of: earlycon: Initialize port fields from DT properties Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:50 +0100
Re: [PATCH v5 05/11] of: earlycon: Initialize port fields from DT properties kbuild test robot <lkp@intel.com> - 2016-01-16 23:00 +0100
[PATCH v5 02/11] serial: earlycon: Fixup earlycon console name and index Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:50 +0100
[PATCH v5 03/11] of: earlycon: Fixup earlycon console name and index Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:50 +0100
[PATCH v5 04/11] of: earlycon: Add options string handling Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:50 +0100
[PATCH v5 09/11] serial: 8250_early: Use port->regshift Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:50 +0100
[PATCH v5 08/11] serial: earlycon: Show the earlycon "driver" in banner Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:50 +0100
[PATCH v5 10/11] of: earlycon: Log more helpful message if stdout-path node not found Peter Hurley <peter@hurleysoftware.com> - 2016-01-16 22:50 +0100
[PATCH v6 11/12] of: earlycon: Log more helpful message if stdout-path node not found Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 05/12] of: earlycon: Add options string handling Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 04/12] of: earlycon: Fixup earlycon console name and index Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 09/12] serial: earlycon: Show the earlycon "driver" in banner Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 00/12] Earlycon cleanup Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 02/12] earlycon: Use common framework for earlycon declarations Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 10/12] serial: 8250_early: Use port->regshift Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 07/12] of: earlycon: Move address translation to of_setup_earlycon() Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 01/12] of: earlycon: of_setup_earlycon() requires CONFIG_OF_EARLY_FLATTREE Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 03/12] serial: earlycon: Fixup earlycon console name and index Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 08/12] serial: earlycon: Common log banner for command line and DT Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 06/12] of: earlycon: Initialize port fields from DT properties Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
[PATCH v6 12/12] serial: 8250_omap: Add omap8250 earlycon Peter Hurley <peter@hurleysoftware.com> - 2016-01-17 00:30 +0100
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