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stm32mp: stm32prog: replace alias by serial device sequence number

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The command "stm32prog serial <dev>" can directly use the device sequence
number of serial uclass as this sequence number is egual to alias when it
exist; this assumption simplify the code and avoid access to gd->fdt_blob
and the device tree parsing.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Patrick Delaunay 2021-02-25 13:37:03 +01:00 • committed by Patrice Chotard
parent b9d5e3aa8f
commit f49eb16c17
2 changed files with 10 additions and 30 deletions
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29
arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_serial.c
View file

@ -187,36 +187,19 @@ static int stm32prog_read(struct stm32prog_data *data, u8 phase, u32 offset,
int stm32prog_serial_init(struct stm32prog_data *data, int link_dev) int stm32prog_serial_init(struct stm32prog_data *data, int link_dev)
{ {
struct udevice *dev = NULL; struct udevice *dev = NULL;
int node;
char alias[10];
const char *path;
struct dm_serial_ops *ops; struct dm_serial_ops *ops;
/* no parity, 8 bits, 1 stop */ /* no parity, 8 bits, 1 stop */
u32 serial_config = SERIAL_DEFAULT_CONFIG; u32 serial_config = SERIAL_DEFAULT_CONFIG;
down_serial_dev = NULL; down_serial_dev = NULL;
sprintf(alias, "serial%d", link_dev); if (uclass_get_device_by_seq(UCLASS_SERIAL, link_dev, &dev)) {
path = fdt_get_alias(gd->fdt_blob, alias); log_err("serial %d device not found\n", link_dev);
if (!path) {
log_err("%s alias not found", alias);
return -ENODEV;
}
node = fdt_path_offset(gd->fdt_blob, path);
if (!uclass_get_device_by_of_offset(UCLASS_SERIAL, node,
&dev)) {
down_serial_dev = dev;
} else if (node > 0 &&
!lists_bind_fdt(gd->dm_root, offset_to_ofnode(node),
&dev, false)) {
if (!device_probe(dev))
down_serial_dev = dev;
}
if (!down_serial_dev) {
log_err("%s = %s device not found", alias, path);
return -ENODEV; return -ENODEV;
} }
down_serial_dev = dev;
/* force silent console on uart only when used */ /* force silent console on uart only when used */
if (gd->cur_serial_dev == down_serial_dev) if (gd->cur_serial_dev == down_serial_dev)
gd->flags |= GD_FLG_DISABLE_CONSOLE | GD_FLG_SILENT; gd->flags |= GD_FLG_DISABLE_CONSOLE | GD_FLG_SILENT;
@ -226,11 +209,11 @@ int stm32prog_serial_init(struct stm32prog_data *data, int link_dev)
ops = serial_get_ops(down_serial_dev); ops = serial_get_ops(down_serial_dev);
if (!ops) { if (!ops) {
log_err("%s = %s missing ops", alias, path); log_err("serial %d = %s missing ops\n", link_dev, dev->name);
return -ENODEV; return -ENODEV;
} }
if (!ops->setconfig) { if (!ops->setconfig) {
log_err("%s = %s missing setconfig", alias, path); log_err("serial %d = %s missing setconfig\n", link_dev, dev->name);
return -ENODEV; return -ENODEV;
} }

11
arch/arm/mach-stm32mp/cpu.c
View file

@ -466,7 +466,6 @@ static void setup_boot_mode(void)
unsigned int instance = (boot_mode & TAMP_BOOT_INSTANCE_MASK) - 1; unsigned int instance = (boot_mode & TAMP_BOOT_INSTANCE_MASK) - 1;
u32 forced_mode = (boot_ctx & TAMP_BOOT_FORCED_MASK); u32 forced_mode = (boot_ctx & TAMP_BOOT_FORCED_MASK);
struct udevice *dev; struct udevice *dev;
int alias;
log_debug("%s: boot_ctx=0x%x => boot_mode=%x, instance=%d forced=%x\n", log_debug("%s: boot_ctx=0x%x => boot_mode=%x, instance=%d forced=%x\n",
__func__, boot_ctx, boot_mode, instance, forced_mode); __func__, boot_ctx, boot_mode, instance, forced_mode);
@ -474,20 +473,18 @@ static void setup_boot_mode(void)
case BOOT_SERIAL_UART: case BOOT_SERIAL_UART:
if (instance > ARRAY_SIZE(serial_addr)) if (instance > ARRAY_SIZE(serial_addr))
break; break;
/* serial : search associated alias in devicetree */ /* serial : search associated node in devicetree */
sprintf(cmd, "serial@%x", serial_addr[instance]); sprintf(cmd, "serial@%x", serial_addr[instance]);
if (uclass_get_device_by_name(UCLASS_SERIAL, cmd, &dev) || if (uclass_get_device_by_name(UCLASS_SERIAL, cmd, &dev)) {
fdtdec_get_alias_seq(gd->fdt_blob, "serial",
dev_of_offset(dev), &alias)) {
/* restore console on error */ /* restore console on error */
if (IS_ENABLED(CONFIG_CMD_STM32PROG_SERIAL)) if (IS_ENABLED(CONFIG_CMD_STM32PROG_SERIAL))
gd->flags &= ~(GD_FLG_SILENT | gd->flags &= ~(GD_FLG_SILENT |
GD_FLG_DISABLE_CONSOLE); GD_FLG_DISABLE_CONSOLE);
printf("serial%d = %s not found in device tree!\n", printf("uart%d = %s not found in device tree!\n",
instance, cmd); instance, cmd);
break; break;
} }
sprintf(cmd, "%d", alias); sprintf(cmd, "%d", dev_seq(dev));
env_set("boot_device", "serial"); env_set("boot_device", "serial");
env_set("boot_instance", cmd); env_set("boot_instance", cmd);