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serial: serial_pl01x: Implement .getinfo() for PL01

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When ACPI is enabled on arm it will use the getinfo function to fill
the SPCR ACPI table.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Moritz Fischer <moritzf@google.com>
This commit is contained in:
Maximilian Brune 2024-10-23 15:19:48 +02:00 • committed by Tom Rini
parent d016abb47f
commit ea37e5064e
3 changed files with 31 additions and 2 deletions
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8
boot/bootflow.c
View file

@ -936,11 +936,15 @@ int bootflow_cmdline_auto(struct bootflow *bflow, const char *arg)
return ret;
*buf = '\0';
if (!strcmp("earlycon", arg)) {
if (!strcmp("earlycon", arg) && info.type == SERIAL_CHIP_16550_COMPATIBLE) {
snprintf(buf, sizeof(buf),
"uart8250,mmio32,%#lx,%dn8", info.addr,
info.baudrate);
} else if (!strcmp("console", arg)) {
} else if (!strcmp("earlycon", arg) && info.type == SERIAL_CHIP_PL01X) {
snprintf(buf, sizeof(buf),
"pl011,mmio32,%#lx,%dn8", info.addr,
info.baudrate);
} else if (!strcmp("console", arg) && info.type == SERIAL_CHIP_16550_COMPATIBLE) {
snprintf(buf, sizeof(buf),
"ttyS0,%dn8", info.baudrate);
}

24
drivers/serial/serial_pl01x.c
View file

@ -19,6 +19,7 @@
#include <watchdog.h>
#include <asm/io.h>
#include <serial.h>
#include <spl.h>
#include <dm/device_compat.h>
#include <dm/platform_data/serial_pl01x.h>
#include <linux/compiler.h>
@ -272,6 +273,28 @@ __weak struct serial_device *default_serial_console(void)
return &pl01x_serial_drv;
}
#else
static int pl01x_serial_getinfo(struct udevice *dev,
struct serial_device_info *info)
{
struct pl01x_serial_plat *plat = dev_get_plat(dev);
/* save code size */
if (!not_xpl())
return -ENOSYS;
info->type = SERIAL_CHIP_PL01X;
info->addr_space = SERIAL_ADDRESS_SPACE_MEMORY;
info->addr = plat->base;
info->size = 0x1000;
info->reg_width = 4;
info->reg_shift = 2;
info->reg_offset = 0;
info->clock = plat->clock;
return 0;
}
int pl01x_serial_setbrg(struct udevice *dev, int baudrate)
{
struct pl01x_serial_plat *plat = dev_get_plat(dev);
@ -341,6 +364,7 @@ static const struct dm_serial_ops pl01x_serial_ops = {
.pending = pl01x_serial_pending,
.getc = pl01x_serial_getc,
.setbrg = pl01x_serial_setbrg,
.getinfo = pl01x_serial_getinfo,
};
#if CONFIG_IS_ENABLED(OF_REAL)

1
include/serial.h
View file

@ -124,6 +124,7 @@ enum serial_stop {
enum serial_chip_type {
SERIAL_CHIP_UNKNOWN = -1,
SERIAL_CHIP_16550_COMPATIBLE,
SERIAL_CHIP_PL01X,
};
enum adr_space_type {