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 ---
.../cmd_stm32prog/stm32prog_serial.c | 29 ++++--------------- arch/arm/mach-stm32mp/cpu.c | 11 +++---- 2 files changed, 10 insertions(+), 30 deletions(-)
diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_serial.c b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_serial.c index 373ca20886..a51e5e3ec8 100644 --- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_serial.c +++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_serial.c @@ -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) { struct udevice *dev = NULL; - int node; - char alias[10]; - const char *path; struct dm_serial_ops *ops; /* no parity, 8 bits, 1 stop */ u32 serial_config = SERIAL_DEFAULT_CONFIG;
down_serial_dev = NULL;
- sprintf(alias, "serial%d", link_dev); - path = fdt_get_alias(gd->fdt_blob, alias); - 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); + if (uclass_get_device_by_seq(UCLASS_SERIAL, link_dev, &dev)) { + log_err("serial %d device not found\n", link_dev); return -ENODEV; }
+ down_serial_dev = dev; + /* force silent console on uart only when used */ if (gd->cur_serial_dev == down_serial_dev) 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);
if (!ops) { - log_err("%s = %s missing ops", alias, path); + log_err("serial %d = %s missing ops\n", link_dev, dev->name); return -ENODEV; } 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; }
diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c index 527b6290de..9a76b5633b 100644 --- a/arch/arm/mach-stm32mp/cpu.c +++ b/arch/arm/mach-stm32mp/cpu.c @@ -466,7 +466,6 @@ static void setup_boot_mode(void) unsigned int instance = (boot_mode & TAMP_BOOT_INSTANCE_MASK) - 1; u32 forced_mode = (boot_ctx & TAMP_BOOT_FORCED_MASK); struct udevice *dev; - int alias;
log_debug("%s: boot_ctx=0x%x => boot_mode=%x, instance=%d forced=%x\n", __func__, boot_ctx, boot_mode, instance, forced_mode); @@ -474,20 +473,18 @@ static void setup_boot_mode(void) case BOOT_SERIAL_UART: if (instance > ARRAY_SIZE(serial_addr)) break; - /* serial : search associated alias in devicetree */ + /* serial : search associated node in devicetree */ sprintf(cmd, "serial@%x", serial_addr[instance]); - if (uclass_get_device_by_name(UCLASS_SERIAL, cmd, &dev) || - fdtdec_get_alias_seq(gd->fdt_blob, "serial", - dev_of_offset(dev), &alias)) { + if (uclass_get_device_by_name(UCLASS_SERIAL, cmd, &dev)) { /* restore console on error */ if (IS_ENABLED(CONFIG_CMD_STM32PROG_SERIAL)) gd->flags &= ~(GD_FLG_SILENT | 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); break; } - sprintf(cmd, "%d", alias); + sprintf(cmd, "%d", dev_seq(dev)); env_set("boot_device", "serial"); env_set("boot_instance", cmd);